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micropython: add micropython component

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KY-zhang-X
2022-09-29 12:10:37 +08:00
parent 1514f1cb9b
commit dd76146324
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50
components/language/micropython/shared/runtime/gchelper.h Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_LIB_UTILS_GCHELPER_H
#define MICROPY_INCLUDED_LIB_UTILS_GCHELPER_H
#include <stdint.h>
#if MICROPY_GCREGS_SETJMP
#include <setjmp.h>
typedef jmp_buf gc_helper_regs_t;
#else
#if defined(__x86_64__)
typedef uintptr_t gc_helper_regs_t[6];
#elif defined(__i386__)
typedef uintptr_t gc_helper_regs_t[4];
#elif defined(__thumb2__) || defined(__thumb__) || defined(__arm__)
typedef uintptr_t gc_helper_regs_t[10];
#elif defined(__aarch64__)
typedef uintptr_t gc_helper_regs_t[11]; // x19-x29
#endif
#endif
void gc_helper_collect_regs_and_stack(void);
#endif // MICROPY_INCLUDED_LIB_UTILS_GCHELPER_H

183
components/language/micropython/shared/runtime/gchelper_generic.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include "py/mpstate.h"
#include "py/gc.h"
#include "shared/runtime/gchelper.h"
#if MICROPY_ENABLE_GC
// Even if we have specific support for an architecture, it is
// possible to force use of setjmp-based implementation.
#if !MICROPY_GCREGS_SETJMP
// We capture here callee-save registers, i.e. ones which may contain
// interesting values held there by our callers. It doesn't make sense
// to capture caller-saved registers, because they, well, put on the
// stack already by the caller.
#if defined(__x86_64__)
STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
register long rbx asm ("rbx");
register long rbp asm ("rbp");
register long r12 asm ("r12");
register long r13 asm ("r13");
register long r14 asm ("r14");
register long r15 asm ("r15");
#ifdef __clang__
// TODO:
// This is dirty workaround for Clang. It tries to get around
// uncompliant (wrt to GCC) behavior of handling register variables.
// Application of this patch here is random, and done only to unbreak
// MacOS build. Better, cross-arch ways to deal with Clang issues should
// be found.
asm ("" : "=r" (rbx));
asm ("" : "=r" (rbp));
asm ("" : "=r" (r12));
asm ("" : "=r" (r13));
asm ("" : "=r" (r14));
asm ("" : "=r" (r15));
#endif
arr[0] = rbx;
arr[1] = rbp;
arr[2] = r12;
arr[3] = r13;
arr[4] = r14;
arr[5] = r15;
}
#elif defined(__i386__)
STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
register long ebx asm ("ebx");
register long esi asm ("esi");
register long edi asm ("edi");
register long ebp asm ("ebp");
#ifdef __clang__
// TODO:
// This is dirty workaround for Clang. It tries to get around
// uncompliant (wrt to GCC) behavior of handling register variables.
// Application of this patch here is random, and done only to unbreak
// MacOS build. Better, cross-arch ways to deal with Clang issues should
// be found.
asm ("" : "=r" (ebx));
asm ("" : "=r" (esi));
asm ("" : "=r" (edi));
asm ("" : "=r" (ebp));
#endif
arr[0] = ebx;
arr[1] = esi;
arr[2] = edi;
arr[3] = ebp;
}
#elif defined(__thumb2__) || defined(__thumb__) || defined(__arm__)
// Fallback implementation, prefer gchelper_m0.s or gchelper_m3.s
STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
register long r4 asm ("r4");
register long r5 asm ("r5");
register long r6 asm ("r6");
register long r7 asm ("r7");
register long r8 asm ("r8");
register long r9 asm ("r9");
register long r10 asm ("r10");
register long r11 asm ("r11");
register long r12 asm ("r12");
register long r13 asm ("r13");
arr[0] = r4;
arr[1] = r5;
arr[2] = r6;
arr[3] = r7;
arr[4] = r8;
arr[5] = r9;
arr[6] = r10;
arr[7] = r11;
arr[8] = r12;
arr[9] = r13;
}
#elif defined(__aarch64__)
STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
const register long x19 asm ("x19");
const register long x20 asm ("x20");
const register long x21 asm ("x21");
const register long x22 asm ("x22");
const register long x23 asm ("x23");
const register long x24 asm ("x24");
const register long x25 asm ("x25");
const register long x26 asm ("x26");
const register long x27 asm ("x27");
const register long x28 asm ("x28");
const register long x29 asm ("x29");
arr[0] = x19;
arr[1] = x20;
arr[2] = x21;
arr[3] = x22;
arr[4] = x23;
arr[5] = x24;
arr[6] = x25;
arr[7] = x26;
arr[8] = x27;
arr[9] = x28;
arr[10] = x29;
}
#else
#error "Architecture not supported for gc_helper_get_regs. Set MICROPY_GCREGS_SETJMP to use the fallback implementation."
#endif
#else // !MICROPY_GCREGS_SETJMP
// Even if we have specific support for an architecture, it is
// possible to force use of setjmp-based implementation.
STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
setjmp(arr);
}
#endif // MICROPY_GCREGS_SETJMP
// Explicitly mark this as noinline to make sure the regs variable
// is effectively at the top of the stack: otherwise, in builds where
// LTO is enabled and a lot of inlining takes place we risk a stack
// layout where regs is lower on the stack than pointers which have
// just been allocated but not yet marked, and get incorrectly sweeped.
MP_NOINLINE void gc_helper_collect_regs_and_stack(void) {
gc_helper_regs_t regs;
gc_helper_get_regs(regs);
// GC stack (and regs because we captured them)
void **regs_ptr = (void **)(void *)&regs;
gc_collect_root(regs_ptr, ((uintptr_t)MP_STATE_THREAD(stack_top) - (uintptr_t)&regs) / sizeof(uintptr_t));
}
#endif // MICROPY_ENABLE_GC

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components/language/micropython/shared/runtime/gchelper_m0.s Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
.syntax unified
.cpu cortex-m0
.thumb
.section .text
.align 2
.global gc_helper_get_regs_and_sp
.type gc_helper_get_regs_and_sp, %function
@ uint gc_helper_get_regs_and_sp(r0=uint regs[10])
gc_helper_get_regs_and_sp:
@ store registers into given array
str r4, [r0, #0]
str r5, [r0, #4]
str r6, [r0, #8]
str r7, [r0, #12]
mov r1, r8
str r1, [r0, #16]
mov r1, r9
str r1, [r0, #20]
mov r1, r10
str r1, [r0, #24]
mov r1, r11
str r1, [r0, #28]
mov r1, r12
str r1, [r0, #32]
mov r1, r13
str r1, [r0, #36]
@ return the sp
mov r0, sp
bx lr
.size gc_helper_get_regs_and_sp, .-gc_helper_get_regs_and_sp

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components/language/micropython/shared/runtime/gchelper_m3.s Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
.syntax unified
.cpu cortex-m3
.thumb
.section .text
.align 2
.global gc_helper_get_regs_and_sp
.type gc_helper_get_regs_and_sp, %function
@ uint gc_helper_get_regs_and_sp(r0=uint regs[10])
gc_helper_get_regs_and_sp:
@ store registers into given array
str r4, [r0], #4
str r5, [r0], #4
str r6, [r0], #4
str r7, [r0], #4
str r8, [r0], #4
str r9, [r0], #4
str r10, [r0], #4
str r11, [r0], #4
str r12, [r0], #4
str r13, [r0], #4
@ return the sp
mov r0, sp
bx lr
.size gc_helper_get_regs_and_sp, .-gc_helper_get_regs_and_sp

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components/language/micropython/shared/runtime/gchelper_native.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include "py/mpstate.h"
#include "py/gc.h"
#include "shared/runtime/gchelper.h"
#if MICROPY_ENABLE_GC
// provided by gchelper_*.s
uintptr_t gc_helper_get_regs_and_sp(uintptr_t *regs);
MP_NOINLINE void gc_helper_collect_regs_and_stack(void) {
// get the registers and the sp
gc_helper_regs_t regs;
uintptr_t sp = gc_helper_get_regs_and_sp(regs);
// trace the stack, including the registers (since they live on the stack in this function)
gc_collect_root((void **)sp, ((uint32_t)MP_STATE_THREAD(stack_top) - sp) / sizeof(uint32_t));
}
#endif

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components/language/micropython/shared/runtime/interrupt_char.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2016 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/obj.h"
#include "py/mpstate.h"
#if MICROPY_KBD_EXCEPTION
int mp_interrupt_char = -1;
void mp_hal_set_interrupt_char(int c) {
mp_interrupt_char = c;
}
#endif

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components/language/micropython/shared/runtime/interrupt_char.h Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2016 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_LIB_UTILS_INTERRUPT_CHAR_H
#define MICROPY_INCLUDED_LIB_UTILS_INTERRUPT_CHAR_H
extern int mp_interrupt_char;
void mp_hal_set_interrupt_char(int c);
#endif // MICROPY_INCLUDED_LIB_UTILS_INTERRUPT_CHAR_H

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components/language/micropython/shared/runtime/mpirq.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Daniel Campora
* 2018 Tobias Badertscher
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include "py/runtime.h"
#include "py/gc.h"
#include "shared/runtime/mpirq.h"
#if MICROPY_ENABLE_SCHEDULER
/******************************************************************************
DECLARE PUBLIC DATA
******************************************************************************/
const mp_arg_t mp_irq_init_args[] = {
{ MP_QSTR_handler, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} },
{ MP_QSTR_trigger, MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_hard, MP_ARG_BOOL, {.u_bool = false} },
};
/******************************************************************************
DECLARE PRIVATE DATA
******************************************************************************/
/******************************************************************************
DEFINE PUBLIC FUNCTIONS
******************************************************************************/
mp_irq_obj_t *mp_irq_new(const mp_irq_methods_t *methods, mp_obj_t parent) {
mp_irq_obj_t *self = m_new0(mp_irq_obj_t, 1);
mp_irq_init(self, methods, parent);
return self;
}
void mp_irq_init(mp_irq_obj_t *self, const mp_irq_methods_t *methods, mp_obj_t parent) {
self->base.type = &mp_irq_type;
self->methods = (mp_irq_methods_t *)methods;
self->parent = parent;
self->handler = mp_const_none;
self->ishard = false;
}
void mp_irq_handler(mp_irq_obj_t *self) {
if (self->handler != mp_const_none) {
if (self->ishard) {
// When executing code within a handler we must lock the scheduler to
// prevent any scheduled callbacks from running, and lock the GC to
// prevent any memory allocations.
mp_sched_lock();
gc_lock();
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_call_function_1(self->handler, self->parent);
nlr_pop();
} else {
// Uncaught exception; disable the callback so that it doesn't run again
self->methods->trigger(self->parent, 0);
self->handler = mp_const_none;
printf("Uncaught exception in IRQ callback handler\n");
mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
}
gc_unlock();
mp_sched_unlock();
} else {
// Schedule call to user function
mp_sched_schedule(self->handler, self->parent);
}
}
}
/******************************************************************************/
// MicroPython bindings
STATIC mp_obj_t mp_irq_flags(mp_obj_t self_in) {
mp_irq_obj_t *self = MP_OBJ_TO_PTR(self_in);
return mp_obj_new_int(self->methods->info(self->parent, MP_IRQ_INFO_FLAGS));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_irq_flags_obj, mp_irq_flags);
STATIC mp_obj_t mp_irq_trigger(size_t n_args, const mp_obj_t *args) {
mp_irq_obj_t *self = MP_OBJ_TO_PTR(args[0]);
mp_obj_t ret_obj = mp_obj_new_int(self->methods->info(self->parent, MP_IRQ_INFO_TRIGGERS));
if (n_args == 2) {
// Set trigger
self->methods->trigger(self->parent, mp_obj_get_int(args[1]));
}
return ret_obj;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_irq_trigger_obj, 1, 2, mp_irq_trigger);
STATIC mp_obj_t mp_irq_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 0, false);
mp_irq_handler(MP_OBJ_TO_PTR(self_in));
return mp_const_none;
}
STATIC const mp_rom_map_elem_t mp_irq_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_flags), MP_ROM_PTR(&mp_irq_flags_obj) },
{ MP_ROM_QSTR(MP_QSTR_trigger), MP_ROM_PTR(&mp_irq_trigger_obj) },
};
STATIC MP_DEFINE_CONST_DICT(mp_irq_locals_dict, mp_irq_locals_dict_table);
const mp_obj_type_t mp_irq_type = {
{ &mp_type_type },
.name = MP_QSTR_irq,
.call = mp_irq_call,
.locals_dict = (mp_obj_dict_t *)&mp_irq_locals_dict,
};
#endif // MICROPY_ENABLE_SCHEDULER

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components/language/micropython/shared/runtime/mpirq.h Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Daniel Campora
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_LIB_UTILS_MPIRQ_H
#define MICROPY_INCLUDED_LIB_UTILS_MPIRQ_H
#include "py/runtime.h"
/******************************************************************************
DEFINE CONSTANTS
******************************************************************************/
enum {
MP_IRQ_ARG_INIT_handler = 0,
MP_IRQ_ARG_INIT_trigger,
MP_IRQ_ARG_INIT_hard,
MP_IRQ_ARG_INIT_NUM_ARGS,
};
/******************************************************************************
DEFINE TYPES
******************************************************************************/
typedef mp_uint_t (*mp_irq_trigger_fun_t)(mp_obj_t self, mp_uint_t trigger);
typedef mp_uint_t (*mp_irq_info_fun_t)(mp_obj_t self, mp_uint_t info_type);
enum {
MP_IRQ_INFO_FLAGS,
MP_IRQ_INFO_TRIGGERS,
};
typedef struct _mp_irq_methods_t {
mp_irq_trigger_fun_t trigger;
mp_irq_info_fun_t info;
} mp_irq_methods_t;
typedef struct _mp_irq_obj_t {
mp_obj_base_t base;
mp_irq_methods_t *methods;
mp_obj_t parent;
mp_obj_t handler;
bool ishard;
} mp_irq_obj_t;
/******************************************************************************
DECLARE EXPORTED DATA
******************************************************************************/
extern const mp_arg_t mp_irq_init_args[];
extern const mp_obj_type_t mp_irq_type;
/******************************************************************************
DECLARE PUBLIC FUNCTIONS
******************************************************************************/
mp_irq_obj_t *mp_irq_new(const mp_irq_methods_t *methods, mp_obj_t parent);
void mp_irq_init(mp_irq_obj_t *self, const mp_irq_methods_t *methods, mp_obj_t parent);
void mp_irq_handler(mp_irq_obj_t *self);
#endif // MICROPY_INCLUDED_LIB_UTILS_MPIRQ_H

726
components/language/micropython/shared/runtime/pyexec.c Normal file
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@@ -0,0 +1,726 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include "py/compile.h"
#include "py/runtime.h"
#include "py/repl.h"
#include "py/gc.h"
#include "py/frozenmod.h"
#include "py/mphal.h"
#if MICROPY_HW_ENABLE_USB
#include "irq.h"
#include "usb.h"
#endif
#include "shared/readline/readline.h"
#include "shared/runtime/pyexec.h"
#include "genhdr/mpversion.h"
pyexec_mode_kind_t pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
int pyexec_system_exit = 0;
#if MICROPY_REPL_INFO
STATIC bool repl_display_debugging_info = 0;
#endif
#define EXEC_FLAG_PRINT_EOF (1 << 0)
#define EXEC_FLAG_ALLOW_DEBUGGING (1 << 1)
#define EXEC_FLAG_IS_REPL (1 << 2)
#define EXEC_FLAG_SOURCE_IS_RAW_CODE (1 << 3)
#define EXEC_FLAG_SOURCE_IS_VSTR (1 << 4)
#define EXEC_FLAG_SOURCE_IS_FILENAME (1 << 5)
#define EXEC_FLAG_SOURCE_IS_READER (1 << 6)
// parses, compiles and executes the code in the lexer
// frees the lexer before returning
// EXEC_FLAG_PRINT_EOF prints 2 EOF chars: 1 after normal output, 1 after exception output
// EXEC_FLAG_ALLOW_DEBUGGING allows debugging info to be printed after executing the code
// EXEC_FLAG_IS_REPL is used for REPL inputs (flag passed on to mp_compile)
STATIC int parse_compile_execute(const void *source, mp_parse_input_kind_t input_kind, mp_uint_t exec_flags) {
int ret = 0;
#if MICROPY_REPL_INFO
uint32_t start = 0;
#endif
#ifdef MICROPY_BOARD_BEFORE_PYTHON_EXEC
MICROPY_BOARD_BEFORE_PYTHON_EXEC(input_kind, exec_flags);
#endif
// by default a SystemExit exception returns 0
pyexec_system_exit = 0;
nlr_buf_t nlr;
nlr.ret_val = NULL;
if (nlr_push(&nlr) == 0) {
mp_obj_t module_fun;
#if MICROPY_MODULE_FROZEN_MPY
if (exec_flags & EXEC_FLAG_SOURCE_IS_RAW_CODE) {
// source is a raw_code object, create the function
const mp_frozen_module_t *frozen = source;
mp_module_context_t *ctx = m_new_obj(mp_module_context_t);
ctx->module.globals = mp_globals_get();
ctx->constants = frozen->constants;
module_fun = mp_make_function_from_raw_code(frozen->rc, ctx, NULL);
} else
#endif
{
#if MICROPY_ENABLE_COMPILER
mp_lexer_t *lex;
if (exec_flags & EXEC_FLAG_SOURCE_IS_VSTR) {
const vstr_t *vstr = source;
lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr->buf, vstr->len, 0);
} else if (exec_flags & EXEC_FLAG_SOURCE_IS_READER) {
lex = mp_lexer_new(MP_QSTR__lt_stdin_gt_, *(mp_reader_t *)source);
} else if (exec_flags & EXEC_FLAG_SOURCE_IS_FILENAME) {
lex = mp_lexer_new_from_file(source);
} else {
lex = (mp_lexer_t *)source;
}
// source is a lexer, parse and compile the script
qstr source_name = lex->source_name;
mp_parse_tree_t parse_tree = mp_parse(lex, input_kind);
module_fun = mp_compile(&parse_tree, source_name, exec_flags & EXEC_FLAG_IS_REPL);
#else
mp_raise_msg(&mp_type_RuntimeError, MP_ERROR_TEXT("script compilation not supported"));
#endif
}
// execute code
mp_hal_set_interrupt_char(CHAR_CTRL_C); // allow ctrl-C to interrupt us
#if MICROPY_REPL_INFO
start = mp_hal_ticks_ms();
#endif
mp_call_function_0(module_fun);
mp_hal_set_interrupt_char(-1); // disable interrupt
mp_handle_pending(true); // handle any pending exceptions (and any callbacks)
nlr_pop();
ret = 1;
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
mp_hal_stdout_tx_strn("\x04", 1);
}
} else {
// uncaught exception
mp_hal_set_interrupt_char(-1); // disable interrupt
mp_handle_pending(false); // clear any pending exceptions (and run any callbacks)
if (exec_flags & EXEC_FLAG_SOURCE_IS_READER) {
const mp_reader_t *reader = source;
reader->close(reader->data);
}
// print EOF after normal output
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
mp_hal_stdout_tx_strn("\x04", 1);
}
// check for SystemExit
if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(((mp_obj_base_t *)nlr.ret_val)->type), MP_OBJ_FROM_PTR(&mp_type_SystemExit))) {
// at the moment, the value of SystemExit is unused
ret = pyexec_system_exit;
} else {
mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
ret = 0;
}
}
#if MICROPY_REPL_INFO
// display debugging info if wanted
if ((exec_flags & EXEC_FLAG_ALLOW_DEBUGGING) && repl_display_debugging_info) {
mp_uint_t ticks = mp_hal_ticks_ms() - start; // TODO implement a function that does this properly
printf("took " UINT_FMT " ms\n", ticks);
// qstr info
{
size_t n_pool, n_qstr, n_str_data_bytes, n_total_bytes;
qstr_pool_info(&n_pool, &n_qstr, &n_str_data_bytes, &n_total_bytes);
printf("qstr:\n n_pool=%u\n n_qstr=%u\n "
"n_str_data_bytes=%u\n n_total_bytes=%u\n",
(unsigned)n_pool, (unsigned)n_qstr, (unsigned)n_str_data_bytes, (unsigned)n_total_bytes);
}
#if MICROPY_ENABLE_GC
// run collection and print GC info
gc_collect();
gc_dump_info();
#endif
}
#endif
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
mp_hal_stdout_tx_strn("\x04", 1);
}
#ifdef MICROPY_BOARD_AFTER_PYTHON_EXEC
MICROPY_BOARD_AFTER_PYTHON_EXEC(input_kind, exec_flags, nlr.ret_val, &ret);
#endif
return ret;
}
#if MICROPY_ENABLE_COMPILER
// This can be configured by a port (and even configured to a function to be
// computed dynamically) to indicate the maximum number of bytes that can be
// held in the stdin buffer.
#ifndef MICROPY_REPL_STDIN_BUFFER_MAX
#define MICROPY_REPL_STDIN_BUFFER_MAX (256)
#endif
typedef struct _mp_reader_stdin_t {
bool eof;
uint16_t window_max;
uint16_t window_remain;
} mp_reader_stdin_t;
STATIC mp_uint_t mp_reader_stdin_readbyte(void *data) {
mp_reader_stdin_t *reader = (mp_reader_stdin_t *)data;
if (reader->eof) {
return MP_READER_EOF;
}
int c = mp_hal_stdin_rx_chr();
if (c == CHAR_CTRL_C || c == CHAR_CTRL_D) {
reader->eof = true;
mp_hal_stdout_tx_strn("\x04", 1); // indicate end to host
if (c == CHAR_CTRL_C) {
#if MICROPY_KBD_EXCEPTION
MP_STATE_VM(mp_kbd_exception).traceback_data = NULL;
nlr_raise(MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)));
#else
mp_raise_type(&mp_type_KeyboardInterrupt);
#endif
} else {
return MP_READER_EOF;
}
}
if (--reader->window_remain == 0) {
mp_hal_stdout_tx_strn("\x01", 1); // indicate window available to host
reader->window_remain = reader->window_max;
}
return c;
}
STATIC void mp_reader_stdin_close(void *data) {
mp_reader_stdin_t *reader = (mp_reader_stdin_t *)data;
if (!reader->eof) {
reader->eof = true;
mp_hal_stdout_tx_strn("\x04", 1); // indicate end to host
for (;;) {
int c = mp_hal_stdin_rx_chr();
if (c == CHAR_CTRL_C || c == CHAR_CTRL_D) {
break;
}
}
}
}
STATIC void mp_reader_new_stdin(mp_reader_t *reader, mp_reader_stdin_t *reader_stdin, uint16_t buf_max) {
// Make flow-control window half the buffer size, and indicate to the host that 2x windows are
// free (sending the window size implicitly indicates that a window is free, and then the 0x01
// indicates that another window is free).
size_t window = buf_max / 2;
char reply[3] = { window & 0xff, window >> 8, 0x01 };
mp_hal_stdout_tx_strn(reply, sizeof(reply));
reader_stdin->eof = false;
reader_stdin->window_max = window;
reader_stdin->window_remain = window;
reader->data = reader_stdin;
reader->readbyte = mp_reader_stdin_readbyte;
reader->close = mp_reader_stdin_close;
}
STATIC int do_reader_stdin(int c) {
if (c != 'A') {
// Unsupported command.
mp_hal_stdout_tx_strn("R\x00", 2);
return 0;
}
// Indicate reception of command.
mp_hal_stdout_tx_strn("R\x01", 2);
mp_reader_t reader;
mp_reader_stdin_t reader_stdin;
mp_reader_new_stdin(&reader, &reader_stdin, MICROPY_REPL_STDIN_BUFFER_MAX);
int exec_flags = EXEC_FLAG_PRINT_EOF | EXEC_FLAG_SOURCE_IS_READER;
return parse_compile_execute(&reader, MP_PARSE_FILE_INPUT, exec_flags);
}
#if MICROPY_REPL_EVENT_DRIVEN
typedef struct _repl_t {
// This structure originally also held current REPL line,
// but it was moved to MP_STATE_VM(repl_line) as containing
// root pointer. Still keep structure in case more state
// will be added later.
// vstr_t line;
bool cont_line;
bool paste_mode;
} repl_t;
repl_t repl;
STATIC int pyexec_raw_repl_process_char(int c);
STATIC int pyexec_friendly_repl_process_char(int c);
void pyexec_event_repl_init(void) {
MP_STATE_VM(repl_line) = vstr_new(32);
repl.cont_line = false;
repl.paste_mode = false;
// no prompt before printing friendly REPL banner or entering raw REPL
readline_init(MP_STATE_VM(repl_line), "");
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
pyexec_raw_repl_process_char(CHAR_CTRL_A);
} else {
pyexec_friendly_repl_process_char(CHAR_CTRL_B);
}
}
STATIC int pyexec_raw_repl_process_char(int c) {
if (c == CHAR_CTRL_A) {
// reset raw REPL
if (vstr_len(MP_STATE_VM(repl_line)) == 2 && vstr_str(MP_STATE_VM(repl_line))[0] == CHAR_CTRL_E) {
int ret = do_reader_stdin(vstr_str(MP_STATE_VM(repl_line))[1]);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
goto reset;
}
mp_hal_stdout_tx_str("raw REPL; CTRL-B to exit\r\n");
goto reset;
} else if (c == CHAR_CTRL_B) {
// change to friendly REPL
pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
vstr_reset(MP_STATE_VM(repl_line));
repl.cont_line = false;
repl.paste_mode = false;
pyexec_friendly_repl_process_char(CHAR_CTRL_B);
return 0;
} else if (c == CHAR_CTRL_C) {
// clear line
vstr_reset(MP_STATE_VM(repl_line));
return 0;
} else if (c == CHAR_CTRL_D) {
// input finished
} else {
// let through any other raw 8-bit value
vstr_add_byte(MP_STATE_VM(repl_line), c);
return 0;
}
// indicate reception of command
mp_hal_stdout_tx_str("OK");
if (MP_STATE_VM(repl_line)->len == 0) {
// exit for a soft reset
mp_hal_stdout_tx_str("\r\n");
vstr_clear(MP_STATE_VM(repl_line));
return PYEXEC_FORCED_EXIT;
}
int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_FILE_INPUT, EXEC_FLAG_PRINT_EOF | EXEC_FLAG_SOURCE_IS_VSTR);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
reset:
vstr_reset(MP_STATE_VM(repl_line));
mp_hal_stdout_tx_str(">");
return 0;
}
STATIC int pyexec_friendly_repl_process_char(int c) {
if (repl.paste_mode) {
if (c == CHAR_CTRL_C) {
// cancel everything
mp_hal_stdout_tx_str("\r\n");
goto input_restart;
} else if (c == CHAR_CTRL_D) {
// end of input
mp_hal_stdout_tx_str("\r\n");
int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_FILE_INPUT, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
goto input_restart;
} else {
// add char to buffer and echo
vstr_add_byte(MP_STATE_VM(repl_line), c);
if (c == '\r') {
mp_hal_stdout_tx_str("\r\n=== ");
} else {
char buf[1] = {c};
mp_hal_stdout_tx_strn(buf, 1);
}
return 0;
}
}
int ret = readline_process_char(c);
if (!repl.cont_line) {
if (ret == CHAR_CTRL_A) {
// change to raw REPL
pyexec_mode_kind = PYEXEC_MODE_RAW_REPL;
mp_hal_stdout_tx_str("\r\n");
pyexec_raw_repl_process_char(CHAR_CTRL_A);
return 0;
} else if (ret == CHAR_CTRL_B) {
// reset friendly REPL
mp_hal_stdout_tx_str("\r\n");
mp_hal_stdout_tx_str(MICROPY_BANNER_NAME_AND_VERSION);
mp_hal_stdout_tx_str("; " MICROPY_BANNER_MACHINE);
mp_hal_stdout_tx_str("\r\n");
#if MICROPY_PY_BUILTINS_HELP
mp_hal_stdout_tx_str("Type \"help()\" for more information.\r\n");
#endif
goto input_restart;
} else if (ret == CHAR_CTRL_C) {
// break
mp_hal_stdout_tx_str("\r\n");
goto input_restart;
} else if (ret == CHAR_CTRL_D) {
// exit for a soft reset
mp_hal_stdout_tx_str("\r\n");
vstr_clear(MP_STATE_VM(repl_line));
return PYEXEC_FORCED_EXIT;
} else if (ret == CHAR_CTRL_E) {
// paste mode
mp_hal_stdout_tx_str("\r\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\r\n=== ");
vstr_reset(MP_STATE_VM(repl_line));
repl.paste_mode = true;
return 0;
}
if (ret < 0) {
return 0;
}
if (!mp_repl_continue_with_input(vstr_null_terminated_str(MP_STATE_VM(repl_line)))) {
goto exec;
}
vstr_add_byte(MP_STATE_VM(repl_line), '\n');
repl.cont_line = true;
readline_note_newline(mp_repl_get_ps2());
return 0;
} else {
if (ret == CHAR_CTRL_C) {
// cancel everything
mp_hal_stdout_tx_str("\r\n");
repl.cont_line = false;
goto input_restart;
} else if (ret == CHAR_CTRL_D) {
// stop entering compound statement
goto exec;
}
if (ret < 0) {
return 0;
}
if (mp_repl_continue_with_input(vstr_null_terminated_str(MP_STATE_VM(repl_line)))) {
vstr_add_byte(MP_STATE_VM(repl_line), '\n');
readline_note_newline(mp_repl_get_ps2());
return 0;
}
exec:;
int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_SINGLE_INPUT, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
input_restart:
vstr_reset(MP_STATE_VM(repl_line));
repl.cont_line = false;
repl.paste_mode = false;
readline_init(MP_STATE_VM(repl_line), mp_repl_get_ps1());
return 0;
}
}
uint8_t pyexec_repl_active;
int pyexec_event_repl_process_char(int c) {
pyexec_repl_active = 1;
int res;
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
res = pyexec_raw_repl_process_char(c);
} else {
res = pyexec_friendly_repl_process_char(c);
}
pyexec_repl_active = 0;
return res;
}
#else // MICROPY_REPL_EVENT_DRIVEN
int pyexec_raw_repl(void) {
vstr_t line;
vstr_init(&line, 32);
raw_repl_reset:
mp_hal_stdout_tx_str("raw REPL; CTRL-B to exit\r\n");
for (;;) {
vstr_reset(&line);
mp_hal_stdout_tx_str(">");
for (;;) {
int c = mp_hal_stdin_rx_chr();
if (c == CHAR_CTRL_A) {
// reset raw REPL
if (vstr_len(&line) == 2 && vstr_str(&line)[0] == CHAR_CTRL_E) {
int ret = do_reader_stdin(vstr_str(&line)[1]);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
vstr_reset(&line);
mp_hal_stdout_tx_str(">");
continue;
}
goto raw_repl_reset;
} else if (c == CHAR_CTRL_B) {
// change to friendly REPL
mp_hal_stdout_tx_str("\r\n");
vstr_clear(&line);
pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
return 0;
} else if (c == CHAR_CTRL_C) {
// clear line
vstr_reset(&line);
} else if (c == CHAR_CTRL_D) {
// input finished
break;
} else {
// let through any other raw 8-bit value
vstr_add_byte(&line, c);
}
}
// indicate reception of command
mp_hal_stdout_tx_str("OK");
if (line.len == 0) {
// exit for a soft reset
mp_hal_stdout_tx_str("\r\n");
vstr_clear(&line);
return PYEXEC_FORCED_EXIT;
}
int ret = parse_compile_execute(&line, MP_PARSE_FILE_INPUT, EXEC_FLAG_PRINT_EOF | EXEC_FLAG_SOURCE_IS_VSTR);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
}
}
int pyexec_friendly_repl(void) {
vstr_t line;
vstr_init(&line, 32);
friendly_repl_reset:
mp_hal_stdout_tx_str(MICROPY_BANNER_NAME_AND_VERSION);
mp_hal_stdout_tx_str("; " MICROPY_BANNER_MACHINE);
mp_hal_stdout_tx_str("\r\n");
#if MICROPY_PY_BUILTINS_HELP
mp_hal_stdout_tx_str("Type \"help()\" for more information.\r\n");
#endif
// to test ctrl-C
/*
{
uint32_t x[4] = {0x424242, 0xdeaddead, 0x242424, 0xdeadbeef};
for (;;) {
nlr_buf_t nlr;
printf("pyexec_repl: %p\n", x);
mp_hal_set_interrupt_char(CHAR_CTRL_C);
if (nlr_push(&nlr) == 0) {
for (;;) {
}
} else {
printf("break\n");
}
}
}
*/
for (;;) {
input_restart:
#if MICROPY_HW_ENABLE_USB
if (usb_vcp_is_enabled()) {
// If the user gets to here and interrupts are disabled then
// they'll never see the prompt, traceback etc. The USB REPL needs
// interrupts to be enabled or no transfers occur. So we try to
// do the user a favor and reenable interrupts.
if (query_irq() == IRQ_STATE_DISABLED) {
enable_irq(IRQ_STATE_ENABLED);
mp_hal_stdout_tx_str("MPY: enabling IRQs\r\n");
}
}
#endif
// If the GC is locked at this point there is no way out except a reset,
// so force the GC to be unlocked to help the user debug what went wrong.
if (MP_STATE_THREAD(gc_lock_depth) != 0) {
MP_STATE_THREAD(gc_lock_depth) = 0;
}
vstr_reset(&line);
int ret = readline(&line, mp_repl_get_ps1());
mp_parse_input_kind_t parse_input_kind = MP_PARSE_SINGLE_INPUT;
if (ret == CHAR_CTRL_A) {
// change to raw REPL
mp_hal_stdout_tx_str("\r\n");
vstr_clear(&line);
pyexec_mode_kind = PYEXEC_MODE_RAW_REPL;
return 0;
} else if (ret == CHAR_CTRL_B) {
// reset friendly REPL
mp_hal_stdout_tx_str("\r\n");
goto friendly_repl_reset;
} else if (ret == CHAR_CTRL_C) {
// break
mp_hal_stdout_tx_str("\r\n");
continue;
} else if (ret == CHAR_CTRL_D) {
// exit for a soft reset
mp_hal_stdout_tx_str("\r\n");
vstr_clear(&line);
return PYEXEC_FORCED_EXIT;
} else if (ret == CHAR_CTRL_E) {
// paste mode
mp_hal_stdout_tx_str("\r\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\r\n=== ");
vstr_reset(&line);
for (;;) {
char c = mp_hal_stdin_rx_chr();
if (c == CHAR_CTRL_C) {
// cancel everything
mp_hal_stdout_tx_str("\r\n");
goto input_restart;
} else if (c == CHAR_CTRL_D) {
// end of input
mp_hal_stdout_tx_str("\r\n");
break;
} else {
// add char to buffer and echo
vstr_add_byte(&line, c);
if (c == '\r') {
mp_hal_stdout_tx_str("\r\n=== ");
} else {
mp_hal_stdout_tx_strn(&c, 1);
}
}
}
parse_input_kind = MP_PARSE_FILE_INPUT;
} else if (vstr_len(&line) == 0) {
continue;
} else {
// got a line with non-zero length, see if it needs continuing
while (mp_repl_continue_with_input(vstr_null_terminated_str(&line))) {
vstr_add_byte(&line, '\n');
ret = readline(&line, mp_repl_get_ps2());
if (ret == CHAR_CTRL_C) {
// cancel everything
mp_hal_stdout_tx_str("\r\n");
goto input_restart;
} else if (ret == CHAR_CTRL_D) {
// stop entering compound statement
break;
}
}
}
ret = parse_compile_execute(&line, parse_input_kind, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
}
}
#endif // MICROPY_REPL_EVENT_DRIVEN
#endif // MICROPY_ENABLE_COMPILER
int pyexec_file(const char *filename) {
return parse_compile_execute(filename, MP_PARSE_FILE_INPUT, EXEC_FLAG_SOURCE_IS_FILENAME);
}
int pyexec_file_if_exists(const char *filename) {
#if MICROPY_MODULE_FROZEN
if (mp_find_frozen_module(filename, NULL, NULL) == MP_IMPORT_STAT_FILE) {
return pyexec_frozen_module(filename);
}
#endif
if (mp_import_stat(filename) != MP_IMPORT_STAT_FILE) {
return 1; // success (no file is the same as an empty file executing without fail)
}
return pyexec_file(filename);
}
#if MICROPY_MODULE_FROZEN
int pyexec_frozen_module(const char *name) {
void *frozen_data;
int frozen_type;
mp_find_frozen_module(name, &frozen_type, &frozen_data);
switch (frozen_type) {
#if MICROPY_MODULE_FROZEN_STR
case MP_FROZEN_STR:
return parse_compile_execute(frozen_data, MP_PARSE_FILE_INPUT, 0);
#endif
#if MICROPY_MODULE_FROZEN_MPY
case MP_FROZEN_MPY:
return parse_compile_execute(frozen_data, MP_PARSE_FILE_INPUT, EXEC_FLAG_SOURCE_IS_RAW_CODE);
#endif
default:
printf("could not find module '%s'\n", name);
return false;
}
}
#endif
#if MICROPY_REPL_INFO
mp_obj_t pyb_set_repl_info(mp_obj_t o_value) {
repl_display_debugging_info = mp_obj_get_int(o_value);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(pyb_set_repl_info_obj, pyb_set_repl_info);
#endif

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_LIB_UTILS_PYEXEC_H
#define MICROPY_INCLUDED_LIB_UTILS_PYEXEC_H
#include "py/obj.h"
typedef enum {
PYEXEC_MODE_FRIENDLY_REPL,
PYEXEC_MODE_RAW_REPL,
} pyexec_mode_kind_t;
extern pyexec_mode_kind_t pyexec_mode_kind;
// Set this to the value (eg PYEXEC_FORCED_EXIT) that will be propagated through
// the pyexec functions if a SystemExit exception is raised by the running code.
// It will reset to 0 at the start of each execution (eg each REPL entry).
extern int pyexec_system_exit;
#define PYEXEC_FORCED_EXIT (0x100)
int pyexec_raw_repl(void);
int pyexec_friendly_repl(void);
int pyexec_file(const char *filename);
int pyexec_file_if_exists(const char *filename);
int pyexec_frozen_module(const char *name);
void pyexec_event_repl_init(void);
int pyexec_event_repl_process_char(int c);
extern uint8_t pyexec_repl_active;
#if MICROPY_REPL_INFO
mp_obj_t pyb_set_repl_info(mp_obj_t o_value);
MP_DECLARE_CONST_FUN_OBJ_1(pyb_set_repl_info_obj);
#endif
#endif // MICROPY_INCLUDED_LIB_UTILS_PYEXEC_H

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Ayke van Laethem
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "semihosting.h"
// Resources:
// http://embed.rs/articles/2016/semi-hosting-rust/
// https://wiki.dlang.org/Minimal_semihosted_ARM_Cortex-M_%22Hello_World%22
// https://github.com/arduino/OpenOCD/blob/master/src/target/arm_semihosting.c
#define SYS_OPEN 0x01
#define SYS_WRITEC 0x03
#define SYS_WRITE 0x05
#define SYS_READC 0x07
// Constants:
#define OPEN_MODE_READ (0) // mode "r"
#define OPEN_MODE_WRITE (4) // mode "w"
#ifndef __thumb__
#error Semihosting is only implemented for ARM microcontrollers.
#endif
static int mp_semihosting_stdout;
static uint32_t mp_semihosting_call(uint32_t num, const void *arg) {
// A semihosting call works as follows, similar to a SVCall:
// * the call is invoked by a special breakpoint: 0xAB
// * the command is placed in r0
// * a pointer to the arguments is placed in r1
// * the return value is placed in r0
// Note that because it uses the breakpoint instruction, applications
// will hang if they're not connected to a debugger. And they'll be
// stuck in a breakpoint if semihosting is not specifically enabled in
// the debugger.
// Also note that semihosting is extremely slow (sometimes >100ms per
// call).
register uint32_t num_reg __asm__ ("r0") = num;
register const void *args_reg __asm__ ("r1") = arg;
__asm__ __volatile__ (
"bkpt 0xAB\n" // invoke semihosting call
: "+r" (num_reg) // call number and result
: "r" (args_reg) // arguments
: "memory"); // make sure args aren't optimized away
return num_reg; // r0, which became the result
}
static int mp_semihosting_open_console(uint32_t mode) {
struct {
char *name;
uint32_t mode;
uint32_t name_len;
} args = {
.name = ":tt", // magic path to console
.mode = mode, // e.g. "r", "w" (see OPEN_MODE_* constants)
.name_len = 3, // strlen(":tt")
};
return mp_semihosting_call(SYS_OPEN, &args);
}
void mp_semihosting_init() {
mp_semihosting_stdout = mp_semihosting_open_console(OPEN_MODE_WRITE);
}
int mp_semihosting_rx_char() {
return mp_semihosting_call(SYS_READC, NULL);
}
static void mp_semihosting_tx_char(char c) {
mp_semihosting_call(SYS_WRITEC, &c);
}
uint32_t mp_semihosting_tx_strn(const char *str, size_t len) {
if (len == 0) {
return 0; // nothing to do
}
if (len == 1) {
mp_semihosting_tx_char(*str); // maybe faster?
return 0;
}
struct {
uint32_t fd;
const char *str;
uint32_t len;
} args = {
.fd = mp_semihosting_stdout,
.str = str,
.len = len,
};
return mp_semihosting_call(SYS_WRITE, &args);
}
uint32_t mp_semihosting_tx_strn_cooked(const char *str, size_t len) {
// Write chunks of data until (excluding) the first '\n' character,
// insert a '\r' character, and then continue with the next chunk
// (starting with '\n').
// Doing byte-by-byte writes would be easier to implement but is far
// too slow.
size_t start = 0;
for (size_t i = 0; i < len; i++) {
if (str[i] == '\n') {
mp_semihosting_tx_strn(str + start, i - start);
mp_semihosting_tx_char('\r');
start = i;
}
}
return mp_semihosting_tx_strn(str + start, len - start);
}

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Ayke van Laethem
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_LIB_UTILS_SEMIHOSTING_H
#define MICROPY_INCLUDED_LIB_UTILS_SEMIHOSTING_H
/*
To use semi-hosting for a replacement UART:
- Add lib/semihosting/semihosting.c to the Makefile sources.
- Call mp_semihosting_init() in main(), around the time UART is initialized.
- Replace mp_hal_stdin_rx_chr and similar in mphalport.c with the semihosting equivalent.
- Include lib/semihosting/semihosting.h in the relevant files.
Then make sure the debugger is attached and enables semihosting. In OpenOCD this is
done with ARM semihosting enable followed by reset. The terminal will need further
configuration to work with MicroPython (bash: stty raw -echo).
*/
#include <stddef.h>
#include <stdint.h>
void mp_semihosting_init();
int mp_semihosting_rx_char();
uint32_t mp_semihosting_tx_strn(const char *str, size_t len);
uint32_t mp_semihosting_tx_strn_cooked(const char *str, size_t len);
#endif // MICROPY_INCLUDED_LIB_UTILS_SEMIHOSTING_H

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "py/mphal.h"
/*
* Extra stdout functions
* These can be either optimized for a particular port, or reference
* implementation below can be used.
*/
// Send "cooked" string of given length, where every occurrence of
// LF character is replaced with CR LF ("\n" is converted to "\r\n").
// This is an optimised version to reduce the number of calls made
// to mp_hal_stdout_tx_strn.
void mp_hal_stdout_tx_strn_cooked(const char *str, size_t len) {
const char *last = str;
while (len--) {
if (*str == '\n') {
if (str > last) {
mp_hal_stdout_tx_strn(last, str - last);
}
mp_hal_stdout_tx_strn("\r\n", 2);
++str;
last = str;
} else {
++str;
}
}
if (str > last) {
mp_hal_stdout_tx_strn(last, str - last);
}
}
// Send zero-terminated string
void mp_hal_stdout_tx_str(const char *str) {
mp_hal_stdout_tx_strn(str, strlen(str));
}

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include "py/obj.h"
#include "py/stream.h"
#include "py/mperrno.h"
#include "py/mphal.h"
// TODO make stdin, stdout and stderr writable objects so they can
// be changed by Python code. This requires some changes, as these
// objects are in a read-only module (py/modsys.c).
/******************************************************************************/
// MicroPython bindings
#define STDIO_FD_IN (0)
#define STDIO_FD_OUT (1)
#define STDIO_FD_ERR (2)
typedef struct _sys_stdio_obj_t {
mp_obj_base_t base;
int fd;
} sys_stdio_obj_t;
#if MICROPY_PY_SYS_STDIO_BUFFER
STATIC const sys_stdio_obj_t stdio_buffer_obj;
#endif
void stdio_obj_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
sys_stdio_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_printf(print, "<io.FileIO %d>", self->fd);
}
STATIC mp_uint_t stdio_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
sys_stdio_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (self->fd == STDIO_FD_IN) {
for (uint i = 0; i < size; i++) {
int c = mp_hal_stdin_rx_chr();
if (c == '\r') {
c = '\n';
}
((byte *)buf)[i] = c;
}
return size;
} else {
*errcode = MP_EPERM;
return MP_STREAM_ERROR;
}
}
STATIC mp_uint_t stdio_write(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
sys_stdio_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (self->fd == STDIO_FD_OUT || self->fd == STDIO_FD_ERR) {
mp_hal_stdout_tx_strn_cooked(buf, size);
return size;
} else {
*errcode = MP_EPERM;
return MP_STREAM_ERROR;
}
}
STATIC mp_uint_t stdio_ioctl(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, int *errcode) {
(void)self_in;
if (request == MP_STREAM_POLL) {
return mp_hal_stdio_poll(arg);
} else {
*errcode = MP_EINVAL;
return MP_STREAM_ERROR;
}
}
STATIC mp_obj_t stdio_obj___exit__(size_t n_args, const mp_obj_t *args) {
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(stdio_obj___exit___obj, 4, 4, stdio_obj___exit__);
// TODO gc hook to close the file if not already closed
STATIC const mp_rom_map_elem_t stdio_locals_dict_table[] = {
#if MICROPY_PY_SYS_STDIO_BUFFER
{ MP_ROM_QSTR(MP_QSTR_buffer), MP_ROM_PTR(&stdio_buffer_obj) },
#endif
{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
{ MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj)},
{ MP_ROM_QSTR(MP_QSTR_readlines), MP_ROM_PTR(&mp_stream_unbuffered_readlines_obj)},
{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
{ MP_ROM_QSTR(MP_QSTR_close), MP_ROM_PTR(&mp_identity_obj) },
{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&mp_identity_obj) },
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&mp_identity_obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&stdio_obj___exit___obj) },
};
STATIC MP_DEFINE_CONST_DICT(stdio_locals_dict, stdio_locals_dict_table);
STATIC const mp_stream_p_t stdio_obj_stream_p = {
.read = stdio_read,
.write = stdio_write,
.ioctl = stdio_ioctl,
.is_text = true,
};
STATIC const mp_obj_type_t stdio_obj_type = {
{ &mp_type_type },
.name = MP_QSTR_FileIO,
// TODO .make_new?
.print = stdio_obj_print,
.getiter = mp_identity_getiter,
.iternext = mp_stream_unbuffered_iter,
.protocol = &stdio_obj_stream_p,
.locals_dict = (mp_obj_dict_t *)&stdio_locals_dict,
};
const sys_stdio_obj_t mp_sys_stdin_obj = {{&stdio_obj_type}, .fd = STDIO_FD_IN};
const sys_stdio_obj_t mp_sys_stdout_obj = {{&stdio_obj_type}, .fd = STDIO_FD_OUT};
const sys_stdio_obj_t mp_sys_stderr_obj = {{&stdio_obj_type}, .fd = STDIO_FD_ERR};
#if MICROPY_PY_SYS_STDIO_BUFFER
STATIC mp_uint_t stdio_buffer_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
for (uint i = 0; i < size; i++) {
((byte *)buf)[i] = mp_hal_stdin_rx_chr();
}
return size;
}
STATIC mp_uint_t stdio_buffer_write(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
mp_hal_stdout_tx_strn(buf, size);
return size;
}
STATIC const mp_stream_p_t stdio_buffer_obj_stream_p = {
.read = stdio_buffer_read,
.write = stdio_buffer_write,
.ioctl = stdio_ioctl,
.is_text = false,
};
STATIC const mp_obj_type_t stdio_buffer_obj_type = {
{ &mp_type_type },
.name = MP_QSTR_FileIO,
.print = stdio_obj_print,
.getiter = mp_identity_getiter,
.iternext = mp_stream_unbuffered_iter,
.protocol = &stdio_buffer_obj_stream_p,
.locals_dict = (mp_obj_dict_t *)&stdio_locals_dict,
};
STATIC const sys_stdio_obj_t stdio_buffer_obj = {{&stdio_buffer_obj_type}, .fd = 0}; // fd unused
#endif