roboforum.ru

#include "ch.h"
#include "hal.h"
#include "iodef.h"

#define BAUDRATE 9600
#define USART2_REMAP (0x1<<3)

SerialConfig SD2_Config = {
   .sc_speed = BAUDRATE,
   .sc_cr2 = USART_CR2_STOP1_BITS,
};

USART_InitTypeDef USART_InitStructure = {
   .USART_BaudRate = BAUDRATE,
   .USART_WordLength = USART_WordLength_8b,
   .USART_StopBits = USART_StopBits_1,
   .USART_Parity = USART_Parity_No,
   .USART_HardwareFlowControl = USART_HardwareFlowControl_None,
   .USART_Mode = USART_Mode_Rx | USART_Mode_Tx
};

int main(int argc, char **argv) {
   (void)argc;
   (void)argv;

   AFIO->MAPR |= USART2_REMAP;

   SET_PAD_MODE(USART2_RX, PAL_MODE_INPUT);
   SET_PAD_MODE(USART2_TX, PAL_MODE_STM32_ALTERNATE_PUSHPULL);

   /*
   * Activates the serial driver 2
   */
   sdStart(&SD2, &SD2_Config); // Buggy! Real HW init from stm32lib
   USART_Init(USART2, &USART_InitStructure);
   USART_Cmd(USART2, ENABLE);

   /*
   * Create threads.
   */

   // Main Thread loop
   while (TRUE) {
      sdPut(&SD2, '.');
      chThdSleepMilliseconds(200);
   }

   return 0;
}