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();
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