micropython: add micropython component

components/language/micropython/drivers/bus/spi.h

@@ -0,0 +1,55 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2018 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.
+ */
+#ifndef MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
+#define MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
+
+#include "py/mphal.h"
+
+enum {
+    MP_SPI_IOCTL_INIT,
+    MP_SPI_IOCTL_DEINIT,
+};
+
+typedef struct _mp_spi_proto_t {
+    int (*ioctl)(void *self, uint32_t cmd);
+    void (*transfer)(void *self, size_t len, const uint8_t *src, uint8_t *dest);
+} mp_spi_proto_t;
+
+typedef struct _mp_soft_spi_obj_t {
+    uint32_t delay_half; // microsecond delay for half SCK period
+    uint8_t polarity;
+    uint8_t phase;
+    mp_hal_pin_obj_t sck;
+    mp_hal_pin_obj_t mosi;
+    mp_hal_pin_obj_t miso;
+} mp_soft_spi_obj_t;
+
+extern const mp_spi_proto_t mp_soft_spi_proto;
+
+int mp_soft_spi_ioctl(void *self, uint32_t cmd);
+void mp_soft_spi_transfer(void *self, size_t len, const uint8_t *src, uint8_t *dest);
+
+#endif // MICROPY_INCLUDED_DRIVERS_BUS_SPI_H