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@ -22,8 +22,10 @@
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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#include "printf.h"
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#include <stm32f4xx_it.h>
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#include <usart2_it.h>
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#include <usart6_it.h>
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#include "usart1_it.h"
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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@ -69,8 +71,22 @@ static void MX_USART1_UART_Init(void);
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/***************************************************************************//**
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* @brief Character send interface for printf function
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*//****************************************************************************/
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void uart_putc(void *p, char c) {
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Usart6_PutByte(c);
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void printf_putc(void *p, char c) {
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Usart1_PutByte(c);
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}
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/***************************************************************************//**
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* @brief Check if specified time interval has elapsed
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* @param tref Pointer to time reference variable
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* @param tcycle Time interval in milliseconds
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*//****************************************************************************/
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static inline uint32_t TickChk(uint32_t *tref, int_fast16_t tcycle) {
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int32_t tdif = SysTickCnt - *tref;
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if (tdif >= tcycle) {
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*tref += tcycle;
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return 1;
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}
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return 0;
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}
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/* USER CODE END 0 */
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@ -111,23 +127,76 @@ int main(void) {
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Usart2_Init();
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Usart6_Init();
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init_printf(NULL, &uart_putc);// connect printf to UART
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printf("Hello world. This is a Nucleo UART and printf sample with IRQ and ring buffer.\n");
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Usart1_Init();
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init_printf(NULL, &printf_putc);
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printf("Nucleo UART with IRQ and ring buffer\n");
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while (1) {
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static uint32_t Tick10msRef = 0;
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/* per-second and total byte counters */
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static uint32_t bytes_2to6 = 0;
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static uint32_t bytes_6to2 = 0;
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static uint32_t total_2to6 = 0;
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static uint32_t total_6to2 = 0;
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if (TickChk(&Tick10msRef, 10)) {
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}
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static uint32_t Tick1secRef = 0;
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if (TickChk(&Tick1secRef, 1000)) {
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LED2_Toggle();
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/* print per-second data rates and cumulative totals */
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printf("OUT:%5u IN:%5u B/s (Total:%u/%u)\n", (unsigned) bytes_2to6, (unsigned) bytes_6to2, (unsigned) total_2to6, (unsigned) total_6to2);
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/* reset per-second counters */
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bytes_2to6 = 0;
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bytes_6to2 = 0;
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}
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int c;
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c = Usart1_GetByte();
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if (c != -1) { // new incoming data
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/*
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switch (c) {
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case '1':
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printf("Send 800 bytes to UART1\n");
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for (int i = 0; i < 800; i++) {
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Usart1_PutByte((i % 10) + '0');
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}
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break;
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case '2':
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printf("Send 800 bytes to UART2\n");
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for (int i = 0; i < 800; i++) {
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Usart2_PutByte((i % 20) + 'A');
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}
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break;
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case '6':
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printf("Send 800 bytes to UART6\n");
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for (int i = 0; i < 800; i++) {
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Usart6_PutByte((i % 20) + 'a');
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}
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break;
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default: // echo back
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Usart1_PutByte(c);
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break;
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}
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*/
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}
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c = Usart2_GetByte();
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if (c != -1) {// new incoming data
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Usart6_PutByte(c);// UART2rx --> UART6tx
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if (c != -1) { // new incoming data
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Usart6_PutByte(c); // UART2rx --> UART6tx
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bytes_2to6++;
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total_2to6++;
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}
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c = Usart6_GetByte();
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if (c != -1) {// new incoming data
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Usart2_PutByte(c);// UART6rx --> UART2tx
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if (c != -1) { // new incoming data
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Usart2_PutByte(c); // UART6rx --> UART2tx
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bytes_6to2++;
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total_6to2++;
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}
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/* USER CODE END WHILE */
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@ -153,14 +222,13 @@ void SystemClock_Config(void) {
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/** Initializes the RCC Oscillators according to the specified parameters
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* in the RCC_OscInitTypeDef structure.
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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RCC_OscInitStruct.PLL.PLLM = 16;
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RCC_OscInitStruct.PLL.PLLN = 336;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 8;
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RCC_OscInitStruct.PLL.PLLN = 256;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV8;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
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Error_Handler();
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@ -172,10 +240,10 @@ void SystemClock_Config(void) {
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| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) {
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
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Error_Handler();
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}
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}
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gnssuser