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| void USART2_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA ,ENABLE);
RCC_APB1PeriphClockCmd( RCC_APB1Periph_USART2,ENABLE);
/*
* USART1_TX -> PA2 , USART1_RX -> PA3
*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 38400;
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_ITConfig(USART2, USART_IT_RXNE, ENABLE);
USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
USART_ClearFlag(USART2,USART_FLAG_TC);
USART_Cmd(USART2, ENABLE);
}
void SendSerialData(unsigned char *CommandData, unsigned int CommandLength )
{
unsigned int loopCounter = 0;
for (loopCounter=0; loopCounter<CommandLength; loopCounter++)
{
USART_SendData(USART2, CommandData[loopCounter]);
// wait untill data transmission complition
while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET)
{}
}
}
void receiveCommandResponce(unsigned int recCount)
{
unsigned int loopCnt = 0;
memset_local(USARTRecDataBuff, 0x00, 80);
for (loopCnt=0;loopCnt<recCount; loopCnt++)
{
// wait untill data reception starts
while (USART_GetFlagStatus(CAMERA_USART_PORT, USART_FLAG_RXNE) == RESET)
{}
USARTRecDataBuff[loopCnt] = USART_ReceiveData(USART2);
}
} |