USART STM32

[Nidhi Rao]

I am able to receive only 0x0D in receive buffer, but I can see different data in Receive string.

Please can someone help me..

unsigned char i = 0, k = 0;

//HAL_GPIO_WritePin(GPIOC, GPIO_PIN_2, GPIO_PIN_SET); //Switch ON GSM LDO

__HAL_UART_ENABLE_IT(&huart1, UART_IT_TC);

__HAL_UART_ENABLE_IT(&huart1, UART_IT_RXNE);

HAL_Delay(500);

while(1)

{

HAL_UART_Receive_IT(&huart1, RxBuff, GSMLength[i][0]);

HAL_UART_Transmit_IT(&huart1, GSMInit[i], GSMLength[i][0]);

HAL_Delay(200);

}

[Tesla DeLorean]

Should look to use TXE, and use the CALLBACKs to manage interrupt interactions, not arbitrary delays.

Manage RxBuff by it's own length, you should turn off the echo on the modem, and deal with the data returned which may have no relationship to the amount of data sent.