diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/TencentOS_tiny.uvoptx b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/TencentOS_tiny.uvoptx
new file mode 100644
index 00000000..dab01e56
--- /dev/null
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/TencentOS_tiny.uvoptx
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diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/TencentOS_tiny.uvprojx b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/TencentOS_tiny.uvprojx
new file mode 100644
index 00000000..a55f1906
--- /dev/null
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/TencentOS_tiny.uvprojx
@@ -0,0 +1,875 @@
+
+
+
+ 2.1
+
+ ### uVision Project, (C) Keil Software
+
+
+
+ TencentOS_tiny
+ 0x4
+ ARM-ADS
+ 5060061::V5.06 update 1 (build 61)::ARMCC
+
+
+ STM32L431RCTx
+ STMicroelectronics
+ Keil.STM32L4xx_DFP.2.2.0
+ http://www.keil.com/pack
+ IRAM(0x20000000-0x2000FFFF) IROM(0x8000000-0x803FFFF) CLOCK(8000000) FPU2 CPUTYPE("Cortex-M4")
+
+
+
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+ USE_HAL_DRIVER,STM32L431xx,NDEBUG
+
+ ..\..\BSP\Inc;..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Inc;..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Legacy;..\..\..\..\platform\vendor_bsp\st\CMSIS\Device\ST\STM32L4xx\Include;..\..\..\..\platform\vendor_bsp\st\CMSIS\Include;..\..\..\..\kernel\core\include;..\..\TOS-CONFIG;..\..\..\..\platform\arch\arm\cortex-m4\keil;..\..\..\..\kernel\pm\include;..\..\..\..\osal\cmsis_os;..\..\..\..\arch\arm\arm-v7m\common\include;..\..\..\..\arch\arm\arm-v7m\cortex-m4\armcc;..\..\BSP\Hardware\DHT11;..\..\BSP\Hardware\OLED;..\..\BSP\Hardware\BH1750;..\..\..\..\components\connectivity\Modbus\3rdparty\freemodbus-v1.6\modbus\ascii;..\..\..\..\components\connectivity\Modbus\3rdparty\freemodbus-v1.6\modbus\functions;..\..\..\..\components\connectivity\Modbus\3rdparty\freemodbus-v1.6\modbus\include;..\..\..\..\components\connectivity\Modbus\3rdparty\freemodbus-v1.6\modbus\rtu;..\..\..\..\components\connectivity\Modbus\3rdparty\freemodbus-v1.6\modbus\tcp;..\..\BSP\Hardware\Modbus_Port
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+
+
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+
+
+
+
+ Application/User
+
+
+ gpio.c
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+
+
+ main.c
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+ 1
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+
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+
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+
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+
+
+
+
+ Drivers/CMSIS
+
+
+ system_stm32l4xx.c
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+
+
+
+
+ Hardware
+
+
+ DHT11_BUS.c
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+
+
+ oled.c
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+
+
+
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+
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+
+
+ mbcrc.c
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+
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+
+
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+ modbus_port
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+
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+ porttimer.c
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+
+
+
+
+ ::CMSIS
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+
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+
+
+
+
+
+
+
+
+
+
+
diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/startup_stm32l431xx.s b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/startup_stm32l431xx.s
new file mode 100644
index 00000000..6a5c15a5
--- /dev/null
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/modbus_te_qcloud_demo/startup_stm32l431xx.s
@@ -0,0 +1,404 @@
+;********************** COPYRIGHT(c) 2017 STMicroelectronics ******************
+;* File Name : startup_stm32l431xx.s
+;* Author : MCD Application Team
+;* Description : STM32L431xx Ultra Low Power devices vector table for MDK-ARM toolchain.
+;* This module performs:
+;* - Set the initial SP
+;* - Set the initial PC == Reset_Handler
+;* - Set the vector table entries with the exceptions ISR address
+;* - Branches to __main in the C library (which eventually
+;* calls main()).
+;* After Reset the Cortex-M4 processor is in Thread mode,
+;* priority is Privileged, and the Stack is set to Main.
+;* <<< Use Configuration Wizard in Context Menu >>>
+;*******************************************************************************
+;*
+;* Redistribution and use in source and binary forms, with or without modification,
+;* are permitted provided that the following conditions are met:
+;* 1. Redistributions of source code must retain the above copyright notice,
+;* this list of conditions and the following disclaimer.
+;* 2. Redistributions in binary form must reproduce the above copyright notice,
+;* this list of conditions and the following disclaimer in the documentation
+;* and/or other materials provided with the distribution.
+;* 3. Neither the name of STMicroelectronics nor the names of its contributors
+;* may be used to endorse or promote products derived from this software
+;* without specific prior written permission.
+;*
+;* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+;* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+;* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+;* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+;* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+;* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+;* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+;* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+;* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+;*
+;*******************************************************************************
+;
+; Amount of memory (in bytes) allocated for Stack
+; Tailor this value to your application needs
+; Stack Configuration
+; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
+;
+
+Stack_Size EQU 0x100
+
+ AREA STACK, NOINIT, READWRITE, ALIGN=3
+Stack_Mem SPACE Stack_Size
+__initial_sp
+
+
+; Heap Configuration
+; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
+;
+
+Heap_Size EQU 0x100
+
+ AREA HEAP, NOINIT, READWRITE, ALIGN=3
+__heap_base
+Heap_Mem SPACE Heap_Size
+__heap_limit
+
+ PRESERVE8
+ THUMB
+
+
+; Vector Table Mapped to Address 0 at Reset
+ AREA RESET, DATA, READONLY
+ EXPORT __Vectors
+ EXPORT __Vectors_End
+ EXPORT __Vectors_Size
+
+__Vectors DCD __initial_sp ; Top of Stack
+ DCD Reset_Handler ; Reset Handler
+ DCD NMI_Handler ; NMI Handler
+ DCD HardFault_Handler ; Hard Fault Handler
+ DCD MemManage_Handler ; MPU Fault Handler
+ DCD BusFault_Handler ; Bus Fault Handler
+ DCD UsageFault_Handler ; Usage Fault Handler
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD SVC_Handler ; SVCall Handler
+ DCD DebugMon_Handler ; Debug Monitor Handler
+ DCD 0 ; Reserved
+ DCD PendSV_Handler ; PendSV Handler
+ DCD SysTick_Handler ; SysTick Handler
+
+ ; External Interrupts
+ DCD WWDG_IRQHandler ; Window WatchDog
+ DCD PVD_PVM_IRQHandler ; PVD/PVM1/PVM2/PVM3/PVM4 through EXTI Line detection
+ DCD TAMP_STAMP_IRQHandler ; Tamper and TimeStamps through the EXTI line
+ DCD RTC_WKUP_IRQHandler ; RTC Wakeup through the EXTI line
+ DCD FLASH_IRQHandler ; FLASH
+ DCD RCC_IRQHandler ; RCC
+ DCD EXTI0_IRQHandler ; EXTI Line0
+ DCD EXTI1_IRQHandler ; EXTI Line1
+ DCD EXTI2_IRQHandler ; EXTI Line2
+ DCD EXTI3_IRQHandler ; EXTI Line3
+ DCD EXTI4_IRQHandler ; EXTI Line4
+ DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1
+ DCD DMA1_Channel2_IRQHandler ; DMA1 Channel 2
+ DCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3
+ DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4
+ DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5
+ DCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6
+ DCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7
+ DCD ADC1_IRQHandler ; ADC1
+ DCD CAN1_TX_IRQHandler ; CAN1 TX
+ DCD CAN1_RX0_IRQHandler ; CAN1 RX0
+ DCD CAN1_RX1_IRQHandler ; CAN1 RX1
+ DCD CAN1_SCE_IRQHandler ; CAN1 SCE
+ DCD EXTI9_5_IRQHandler ; External Line[9:5]s
+ DCD TIM1_BRK_TIM15_IRQHandler ; TIM1 Break and TIM15
+ DCD TIM1_UP_TIM16_IRQHandler ; TIM1 Update and TIM16
+ DCD TIM1_TRG_COM_IRQHandler ; TIM1 Trigger and Commutation
+ DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
+ DCD TIM2_IRQHandler ; TIM2
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD I2C1_EV_IRQHandler ; I2C1 Event
+ DCD I2C1_ER_IRQHandler ; I2C1 Error
+ DCD I2C2_EV_IRQHandler ; I2C2 Event
+ DCD I2C2_ER_IRQHandler ; I2C2 Error
+ DCD SPI1_IRQHandler ; SPI1
+ DCD SPI2_IRQHandler ; SPI2
+ DCD USART1_IRQHandler ; USART1
+ DCD USART2_IRQHandler ; USART2
+ DCD USART3_IRQHandler ; USART3
+ DCD EXTI15_10_IRQHandler ; External Line[15:10]
+ DCD RTC_Alarm_IRQHandler ; RTC Alarm (A and B) through EXTI Line
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD SDMMC1_IRQHandler ; SDMMC1
+ DCD 0 ; Reserved
+ DCD SPI3_IRQHandler ; SPI3
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD TIM6_DAC_IRQHandler ; TIM6 and DAC1&2 underrun errors
+ DCD TIM7_IRQHandler ; TIM7
+ DCD DMA2_Channel1_IRQHandler ; DMA2 Channel 1
+ DCD DMA2_Channel2_IRQHandler ; DMA2 Channel 2
+ DCD DMA2_Channel3_IRQHandler ; DMA2 Channel 3
+ DCD DMA2_Channel4_IRQHandler ; DMA2 Channel 4
+ DCD DMA2_Channel5_IRQHandler ; DMA2 Channel 5
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD COMP_IRQHandler ; COMP Interrupt
+ DCD LPTIM1_IRQHandler ; LP TIM1 interrupt
+ DCD LPTIM2_IRQHandler ; LP TIM2 interrupt
+ DCD 0 ; Reserved
+ DCD DMA2_Channel6_IRQHandler ; DMA2 Channel 6
+ DCD DMA2_Channel7_IRQHandler ; DMA2 Channel 7
+ DCD LPUART1_IRQHandler ; LP UART1 interrupt
+ DCD QUADSPI_IRQHandler ; Quad SPI global interrupt
+ DCD I2C3_EV_IRQHandler ; I2C3 event
+ DCD I2C3_ER_IRQHandler ; I2C3 error
+ DCD SAI1_IRQHandler ; Serial Audio Interface 1 global interrupt
+ DCD 0 ; Reserved
+ DCD SWPMI1_IRQHandler ; Serial Wire Interface 1 global interrupt
+ DCD TSC_IRQHandler ; Touch Sense Controller global interrupt
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD RNG_IRQHandler ; RNG global interrupt
+ DCD FPU_IRQHandler ; FPU
+ DCD CRS_IRQHandler ; CRS interrupt
+
+__Vectors_End
+
+__Vectors_Size EQU __Vectors_End - __Vectors
+
+ AREA |.text|, CODE, READONLY
+
+; Reset handler
+Reset_Handler PROC
+ EXPORT Reset_Handler [WEAK]
+ IMPORT SystemInit
+ IMPORT __main
+
+ LDR R0, =SystemInit
+ BLX R0
+ LDR R0, =__main
+ BX R0
+ ENDP
+
+; Dummy Exception Handlers (infinite loops which can be modified)
+
+NMI_Handler PROC
+ EXPORT NMI_Handler [WEAK]
+ B .
+ ENDP
+HardFault_Handler\
+ PROC
+ EXPORT HardFault_Handler [WEAK]
+ B .
+ ENDP
+MemManage_Handler\
+ PROC
+ EXPORT MemManage_Handler [WEAK]
+ B .
+ ENDP
+BusFault_Handler\
+ PROC
+ EXPORT BusFault_Handler [WEAK]
+ B .
+ ENDP
+UsageFault_Handler\
+ PROC
+ EXPORT UsageFault_Handler [WEAK]
+ B .
+ ENDP
+SVC_Handler PROC
+ EXPORT SVC_Handler [WEAK]
+ B .
+ ENDP
+DebugMon_Handler\
+ PROC
+ EXPORT DebugMon_Handler [WEAK]
+ B .
+ ENDP
+PendSV_Handler PROC
+ EXPORT PendSV_Handler [WEAK]
+ B .
+ ENDP
+SysTick_Handler PROC
+ EXPORT SysTick_Handler [WEAK]
+ B .
+ ENDP
+
+Default_Handler PROC
+
+ EXPORT WWDG_IRQHandler [WEAK]
+ EXPORT PVD_PVM_IRQHandler [WEAK]
+ EXPORT TAMP_STAMP_IRQHandler [WEAK]
+ EXPORT RTC_WKUP_IRQHandler [WEAK]
+ EXPORT FLASH_IRQHandler [WEAK]
+ EXPORT RCC_IRQHandler [WEAK]
+ EXPORT EXTI0_IRQHandler [WEAK]
+ EXPORT EXTI1_IRQHandler [WEAK]
+ EXPORT EXTI2_IRQHandler [WEAK]
+ EXPORT EXTI3_IRQHandler [WEAK]
+ EXPORT EXTI4_IRQHandler [WEAK]
+ EXPORT DMA1_Channel1_IRQHandler [WEAK]
+ EXPORT DMA1_Channel2_IRQHandler [WEAK]
+ EXPORT DMA1_Channel3_IRQHandler [WEAK]
+ EXPORT DMA1_Channel4_IRQHandler [WEAK]
+ EXPORT DMA1_Channel5_IRQHandler [WEAK]
+ EXPORT DMA1_Channel6_IRQHandler [WEAK]
+ EXPORT DMA1_Channel7_IRQHandler [WEAK]
+ EXPORT ADC1_IRQHandler [WEAK]
+ EXPORT CAN1_TX_IRQHandler [WEAK]
+ EXPORT CAN1_RX0_IRQHandler [WEAK]
+ EXPORT CAN1_RX1_IRQHandler [WEAK]
+ EXPORT CAN1_SCE_IRQHandler [WEAK]
+ EXPORT EXTI9_5_IRQHandler [WEAK]
+ EXPORT TIM1_BRK_TIM15_IRQHandler [WEAK]
+ EXPORT TIM1_UP_TIM16_IRQHandler [WEAK]
+ EXPORT TIM1_TRG_COM_IRQHandler [WEAK]
+ EXPORT TIM1_CC_IRQHandler [WEAK]
+ EXPORT TIM2_IRQHandler [WEAK]
+ EXPORT I2C1_EV_IRQHandler [WEAK]
+ EXPORT I2C1_ER_IRQHandler [WEAK]
+ EXPORT I2C2_EV_IRQHandler [WEAK]
+ EXPORT I2C2_ER_IRQHandler [WEAK]
+ EXPORT SPI1_IRQHandler [WEAK]
+ EXPORT SPI2_IRQHandler [WEAK]
+ EXPORT USART1_IRQHandler [WEAK]
+ EXPORT USART2_IRQHandler [WEAK]
+ EXPORT USART3_IRQHandler [WEAK]
+ EXPORT EXTI15_10_IRQHandler [WEAK]
+ EXPORT RTC_Alarm_IRQHandler [WEAK]
+ EXPORT SDMMC1_IRQHandler [WEAK]
+ EXPORT SPI3_IRQHandler [WEAK]
+ EXPORT TIM6_DAC_IRQHandler [WEAK]
+ EXPORT TIM7_IRQHandler [WEAK]
+ EXPORT DMA2_Channel1_IRQHandler [WEAK]
+ EXPORT DMA2_Channel2_IRQHandler [WEAK]
+ EXPORT DMA2_Channel3_IRQHandler [WEAK]
+ EXPORT DMA2_Channel4_IRQHandler [WEAK]
+ EXPORT DMA2_Channel5_IRQHandler [WEAK]
+ EXPORT COMP_IRQHandler [WEAK]
+ EXPORT LPTIM1_IRQHandler [WEAK]
+ EXPORT LPTIM2_IRQHandler [WEAK]
+ EXPORT DMA2_Channel6_IRQHandler [WEAK]
+ EXPORT DMA2_Channel7_IRQHandler [WEAK]
+ EXPORT LPUART1_IRQHandler [WEAK]
+ EXPORT QUADSPI_IRQHandler [WEAK]
+ EXPORT I2C3_EV_IRQHandler [WEAK]
+ EXPORT I2C3_ER_IRQHandler [WEAK]
+ EXPORT SAI1_IRQHandler [WEAK]
+ EXPORT SWPMI1_IRQHandler [WEAK]
+ EXPORT TSC_IRQHandler [WEAK]
+ EXPORT RNG_IRQHandler [WEAK]
+ EXPORT FPU_IRQHandler [WEAK]
+ EXPORT CRS_IRQHandler [WEAK]
+
+WWDG_IRQHandler
+PVD_PVM_IRQHandler
+TAMP_STAMP_IRQHandler
+RTC_WKUP_IRQHandler
+FLASH_IRQHandler
+RCC_IRQHandler
+EXTI0_IRQHandler
+EXTI1_IRQHandler
+EXTI2_IRQHandler
+EXTI3_IRQHandler
+EXTI4_IRQHandler
+DMA1_Channel1_IRQHandler
+DMA1_Channel2_IRQHandler
+DMA1_Channel3_IRQHandler
+DMA1_Channel4_IRQHandler
+DMA1_Channel5_IRQHandler
+DMA1_Channel6_IRQHandler
+DMA1_Channel7_IRQHandler
+ADC1_IRQHandler
+CAN1_TX_IRQHandler
+CAN1_RX0_IRQHandler
+CAN1_RX1_IRQHandler
+CAN1_SCE_IRQHandler
+EXTI9_5_IRQHandler
+TIM1_BRK_TIM15_IRQHandler
+TIM1_UP_TIM16_IRQHandler
+TIM1_TRG_COM_IRQHandler
+TIM1_CC_IRQHandler
+TIM2_IRQHandler
+I2C1_EV_IRQHandler
+I2C1_ER_IRQHandler
+I2C2_EV_IRQHandler
+I2C2_ER_IRQHandler
+SPI1_IRQHandler
+SPI2_IRQHandler
+USART1_IRQHandler
+USART2_IRQHandler
+USART3_IRQHandler
+EXTI15_10_IRQHandler
+RTC_Alarm_IRQHandler
+SDMMC1_IRQHandler
+SPI3_IRQHandler
+TIM6_DAC_IRQHandler
+TIM7_IRQHandler
+DMA2_Channel1_IRQHandler
+DMA2_Channel2_IRQHandler
+DMA2_Channel3_IRQHandler
+DMA2_Channel4_IRQHandler
+DMA2_Channel5_IRQHandler
+COMP_IRQHandler
+LPTIM1_IRQHandler
+LPTIM2_IRQHandler
+DMA2_Channel6_IRQHandler
+DMA2_Channel7_IRQHandler
+LPUART1_IRQHandler
+QUADSPI_IRQHandler
+I2C3_EV_IRQHandler
+I2C3_ER_IRQHandler
+SAI1_IRQHandler
+SWPMI1_IRQHandler
+TSC_IRQHandler
+RNG_IRQHandler
+FPU_IRQHandler
+CRS_IRQHandler
+
+ B .
+
+ ENDP
+
+ ALIGN
+
+;*******************************************************************************
+; User Stack and Heap initialization
+;*******************************************************************************
+ IF :DEF:__MICROLIB
+
+ EXPORT __initial_sp
+ EXPORT __heap_base
+ EXPORT __heap_limit
+
+ ELSE
+
+ IMPORT __use_two_region_memory
+ EXPORT __user_initial_stackheap
+
+__user_initial_stackheap
+
+ LDR R0, = Heap_Mem
+ LDR R1, =(Stack_Mem + Stack_Size)
+ LDR R2, = (Heap_Mem + Heap_Size)
+ LDR R3, = Stack_Mem
+ BX LR
+
+ ALIGN
+
+ ENDIF
+
+ END
+
+;************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE*****
diff --git a/examples/modbus_te_qcloud_demo/modbus.c b/examples/modbus_te_qcloud_demo/modbus.c
new file mode 100644
index 00000000..ab341f57
--- /dev/null
+++ b/examples/modbus_te_qcloud_demo/modbus.c
@@ -0,0 +1,220 @@
+#include "cmsis_os.h"
+#include "mb.h"
+#include "tim.h"
+#include "stdlib.h"
+
+/* ----------------------- Defines ------------------------------------------*/
+#define REG_INPUT_START 0x0001U
+#define REG_INPUT_NREGS 4
+
+#define REG_HOLDING_START ( 1 )
+#define REG_HOLDING_NREGS ( 32 )
+/* ----------------------- Static variables ---------------------------------*/
+static uint16_t usRegInputStart = REG_INPUT_START;
+static uint16_t usRegInputBuf[REG_INPUT_NREGS] = {0x05,0x06,0x07,0x08};
+
+static USHORT usRegHoldingStart = REG_HOLDING_START;
+static USHORT usRegHoldingBuf[REG_HOLDING_NREGS] = {0x00};
+
+#define TASK1_STK_SIZE 512
+void task1(void *arg);
+osThreadDef(task1, osPriorityNormal, 1, TASK1_STK_SIZE);
+
+
+#define MB_REG_ADDR_PM2D5 0x00 // int 0-250
+#define MB_REG_ADDR_SMOKE 0x01 // int 0-4096
+#define MB_REG_ADDR_HUMI 0x03 // float 0-100
+#define MB_REG_ADDR_REPORT_PERIOD 0x05 // int 0-4000
+#define MB_REG_ADDR_SWITCH 0x07 // bool 0/1
+#define MB_REG_ADDR_LIGHT 0x08 // float 0-4000
+#define MB_REG_ADDR_CO2VALUE 0x0a // int 0-10000
+#define MB_REG_ADDR_TVOC 0x0c // int 0-10000
+#define MB_REG_ADDR_TEMP 0x0e // float 0-100
+
+uint16_t val_pm2d5 = 200;
+uint16_t val_smoke = 1000;
+uint16_t val_humi = 66;
+uint16_t val_report_period = 5;
+uint16_t val_switch = 0;
+uint16_t val_light = 888;
+uint16_t val_co2_value = 2666;
+uint16_t val_tvoc = 1555;
+uint16_t val_temp = 25;
+
+void randomValues() {
+ val_pm2d5 = 200 + rand()%20;
+ val_smoke = 1000 + rand()%50;
+ val_humi = 66 + rand()%10;
+ val_light = 888 + rand()%50;
+ val_co2_value = 2666 + rand()%100;
+ val_tvoc = 1555 + rand()%50;
+ val_temp = 25 + rand()%5;
+#if 0
+ printf("random pm2d5: %d\r\n", val_pm2d5);
+ printf("random val_smoke: %d\r\n", val_smoke);
+ printf("random val_humi: %d\r\n", val_humi);
+ printf("random val_light: %d\r\n", val_light);
+ printf("random val_co2_value: %d\r\n", val_co2_value);
+ printf("random val_tvoc: %d\r\n", val_tvoc);
+ printf("random val_temp: %d\r\n", val_temp);
+#endif
+}
+
+
+void initRegHoldingBuf() {
+ usRegHoldingBuf[MB_REG_ADDR_PM2D5] = val_pm2d5;
+ usRegHoldingBuf[MB_REG_ADDR_SMOKE] = val_smoke >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_SMOKE + 1] = val_smoke & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_HUMI] = val_humi >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_HUMI + 1] = val_humi & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_REPORT_PERIOD] = val_report_period >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_REPORT_PERIOD + 1] = val_report_period & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_SWITCH] = val_switch;
+ usRegHoldingBuf[MB_REG_ADDR_LIGHT] = val_light >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_LIGHT + 1] = val_light & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_CO2VALUE] = val_co2_value >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_CO2VALUE + 1] = val_co2_value & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_TVOC] = val_tvoc >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_TVOC + 1] = val_tvoc & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_TEMP] = val_temp;
+}
+
+
+void updateRegHoldingBuf() {
+ randomValues();
+
+ usRegHoldingBuf[MB_REG_ADDR_PM2D5] = val_pm2d5;
+ usRegHoldingBuf[MB_REG_ADDR_SMOKE] = val_smoke >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_SMOKE + 1] = val_smoke & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_HUMI] = val_humi >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_HUMI + 1] = val_humi & 0x00ff;
+ //usRegHoldingBuf[MB_REG_ADDR_REPORT_PERIOD] = val_report_period >> 8;
+ //usRegHoldingBuf[MB_REG_ADDR_REPORT_PERIOD + 1] = val_report_period & 0x00ff;
+ //usRegHoldingBuf[MB_REG_ADDR_SWITCH] = val_switch;
+ usRegHoldingBuf[MB_REG_ADDR_LIGHT] = val_light >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_LIGHT + 1] = val_light & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_CO2VALUE] = val_co2_value >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_CO2VALUE + 1] = val_co2_value & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_TVOC] = val_tvoc >> 8;
+ usRegHoldingBuf[MB_REG_ADDR_TVOC + 1] = val_tvoc & 0x00ff;
+ usRegHoldingBuf[MB_REG_ADDR_TEMP] = val_temp;
+}
+
+void WriteRegHoldingCallback(int iRegIndex) {
+ if (iRegIndex == MB_REG_ADDR_SWITCH) {
+ uint16_t switch_val = usRegHoldingBuf[MB_REG_ADDR_SWITCH];
+ printf("write switch value %d\r\n", switch_val);
+ GPIO_PinState state = GPIO_PIN_SET;
+ if (switch_val == 0) {
+ state = GPIO_PIN_RESET;
+ }
+ HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, state);
+ }
+}
+
+void task1(void *arg)
+{
+ __HAL_TIM_CLEAR_FLAG(&htim6,TIM_FLAG_UPDATE);
+ eMBInit(MB_RTU, 0x01, 1, 9600, MB_PAR_ODD);
+ eMBEnable();
+
+ initRegHoldingBuf();
+ while (1) {
+ eMBPoll();
+ // printf("FreeModbus eMBPoll function running\r\n");
+ osDelay(200);
+ updateRegHoldingBuf();
+ }
+}
+
+void application_entry(void *arg)
+{
+ osThreadCreate(osThread(task1), NULL); // Create task1
+}
+
+eMBErrorCode
+eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs )
+{
+ eMBErrorCode eStatus = MB_ENOERR;
+ int iRegIndex;
+
+ if( ( usAddress >= REG_INPUT_START )
+ && ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
+ {
+ iRegIndex = ( int )( usAddress - usRegInputStart );
+ while( usNRegs > 0 )
+ {
+ *pucRegBuffer++ =
+ ( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
+ *pucRegBuffer++ =
+ ( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
+ iRegIndex++;
+ usNRegs--;
+ }
+ }
+ else
+ {
+ eStatus = MB_ENOREG;
+ }
+
+ return eStatus;
+}
+
+eMBErrorCode
+eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode )
+{
+ eMBErrorCode eStatus = MB_ENOERR;
+ int iRegIndex;
+
+ if( ( usAddress >= REG_HOLDING_START ) && ( usAddress + usNRegs <= REG_HOLDING_START + REG_HOLDING_NREGS ) )
+ {
+ iRegIndex = ( int )( usAddress - usRegHoldingStart );
+ switch ( eMode )
+ {
+ case MB_REG_READ:
+ while( usNRegs > 0 )
+ {
+ *pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] >> 8 );
+ *pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] & 0xFF );
+ iRegIndex++;
+ usNRegs--;
+ }
+ break;
+
+ case MB_REG_WRITE:
+ printf("holding write usAddress[%d] usNRegs[%d] eMode[%d]\r\n", usAddress, usNRegs, eMode);
+ while( usNRegs > 0 )
+ {
+ usRegHoldingBuf[iRegIndex] = *pucRegBuffer++ << 8;
+ usRegHoldingBuf[iRegIndex] |= *pucRegBuffer++;
+ WriteRegHoldingCallback(iRegIndex);
+ iRegIndex++;
+ usNRegs--;
+ }
+ }
+ }
+ else
+ {
+ eStatus = MB_ENOREG;
+ }
+ return eStatus;
+}
+
+eMBErrorCode
+eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils, eMBRegisterMode eMode )
+{
+ ( void )pucRegBuffer;
+ ( void )usAddress;
+ ( void )usNCoils;
+ ( void )eMode;
+ return MB_ENOREG;
+}
+
+eMBErrorCode
+eMBRegDiscreteCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNDiscrete )
+{
+ ( void )pucRegBuffer;
+ ( void )usAddress;
+ ( void )usNDiscrete;
+ return MB_ENOREG;
+}