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USART + Polling

Question asked by Pachchigar.Pinkesh on May 5, 2015
Latest reply on May 5, 2015 by Pachchigar.Pinkesh
Hello all,

I am novice to STM family.

Here is the code which I have written for USART but not working .


void UsartInit(void)
{
        USART_InitTypeDef USART_InitStructure;
        GPIO_InitTypeDef GPIO_InitStructure;        

        RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    
        GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_2 | GPIO_Pin_3;
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
        GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;                
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;        
        GPIO_Init(GPIOA, &GPIO_InitStructure);

        GPIO_PinAFConfig(GPIOA, GPIO_Pin_2, GPIO_AF_USART2);
        GPIO_PinAFConfig(GPIOA, GPIO_Pin_3, GPIO_AF_USART2);

        USART_InitStructure.USART_BaudRate = 115200;
        USART_InitStructure.USART_WordLength=USART_WordLength_8b;
        USART_InitStructure.USART_StopBits = USART_StopBits_1;
        USART_InitStructure.USART_Parity= USART_Parity_No;
        USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
        USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
        USART_Init(USART2, &USART_InitStructure);        

        USART_Cmd(USART2, ENABLE);
}


int main(void)
{
    char ch='A';
    UsartInit();

    while(1)    
    {
     while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) != SET);
            
     USART_SendData(USART2, ch);
    
     Delay(0x3FFFFF);
    }
}


I have no idea what I am missing here ...

I need help to rectify the error.

I have simply connected PA2 to the receiver of MAX232.

Still I am not getting data on minicom,


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