Posted on May 05, 2015 at 09:24Hello 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,
#uart-+-discovery-board
