LPC1114 UART收發(fā)實(shí)驗

// 發(fā)送字符函數

/*****************************************************************************
** Function name:UARTSendByte
**
** Descriptions:Send a block of data to the UART 0 port based
**on the data Byte
**
** parameters:send data
** Returned value:None
**
*****************************************************************************/
void UARTSendByte(uint8_t dat)
{
while ( !(LPC_UART->LSR & LSR_THRE) )
{
; // 等待數據發(fā)送完畢
}

LPC_UART->THR = dat;
}

// 接受字符函數

/*****************************************************************************
** Function name:UARTReceiveByte
**
** Descriptions:Receive a block of data to the UART 0 port based
**on the data Byte
**
** parameters:None
** Returned value:Byte
**
*****************************************************************************/
uint8_t UARTReceiveByte(void)
{
uint8_t rcvData;

while (!(LPC_UART->LSR & LSR_RDR))
{
; // 查詢(xún)數據是否接收完畢
}

rcvData = LPC_UART->RBR; // 接收數據
return (rcvData);
}

// 接收字符串函數

/*****************************************************************************
** Function name:UARTReceive
**
** Descriptions:Receive a block of data to the UART 0 port based
**on the data Length
**
** parameters:buffer pointer, and data length
** Returned value:Note
**
*****************************************************************************/
void UARTReceive(uint8_t *BufferPtr, uint32_t Length)
{
while (Length--)
{
*BufferPtr++ = UARTReceiveByte(); // 把數據放入緩沖
}
}

// 主函數

int main(void) {

// TODO: insert code here
uint8_t ch = 0;

UARTInit(9600);
LPC_UART->IER = IER_THRE | IER_RLS; // 設置中斷使能寄存器

UARTSend((uint8_t *)Buffer, 10);

while (1)
{
ch = UARTReceiveByte(); // 接收字符
if (ch != 0x00)
{
UARTSendByte(ch); // 發(fā)送接收數據
}
}

// Enter an infinite loop, just incrementing a counter
volatile static int i = 0 ;
while(1) {
i++ ;
}
return 0 ;
}

c510d9abb6b297dd281662e4c8c&t=1274344745¬humb=yes" rel="nofollow" target="_blank">IMG_3380.JPG(70.52 KB)

2010-5-14 06:54

IMG_3381.JPG(76.79 KB)

2010-5-14 06:54

IMG_3382.JPG(72.08 KB)

2010-5-14 06:54

串口我用的是USB轉串口進(jìn)行調試的，如果先打開(kāi)串口進(jìn)行，再連接實(shí)驗板時(shí)會(huì )提示如下：

此時(shí)如果點(diǎn)擊"OK"，將提示如下錯誤：

此時(shí)應該點(diǎn)擊如下圖紅圈的地方，LPC-Link，然后點(diǎn)擊“OK”即可正常連接。

2010-5-14 07:10