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hello I write blow code with STcubemx and arm keil. I want to send a string data from MCU TO GSM module for calls. but nothing happend, when programing the chip. my question is , when send serial data with printf command , which port that command is sent (I use STM32F103C8T6 that has 3 usart)
how can I reslove this problem?
char phoneNO[]="093XXXXXX"; int main(void) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_USART2_UART_Init(); printf("AT"); HAL_Delay(1000); printf("ATD"); printf(phoneNO); HAL_Delay(8000); printf("ATH"); while (1) { }
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yeah, I learned how to retarget uart to printf. how can I, send carriage return and line feed for that code?
printf("ATD%s\n", phoneNO); // OR \r\n
hellooo friends
my problem is solved, very thanks
for other people that have my problem, I send all code that works good on chip. (IMPORTANT OF main.c code only) softwares: cubemx 4.18, cubef1 1.4, keil uvision 5.24
#include "main.h" #include "stm32f1xx_hal.h" UART_HandleTypeDef huart2; void SystemClock_Config(void); void Error_Handler(void); static void MX_GPIO_Init(void); static void MX_USART2_UART_Init(void); #ifdef __GNUC__ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif int main(void) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_USART2_UART_Init(); printf("AT\r"); HAL_Delay(4000); printf("AT+CMGF=1\r"); printf("AT+CMGS=09372274293\r"); printf("hellooo\x1A"); while (1) { } } PUTCHAR_PROTOTYPE /**RETARGET PRINTF TO UART2***/ { HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, 0xFFFF); return ch; }