void _USART1_IRQHandler(void)
{
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
/* received data */
USART_GetInputString();
}
/* If overrun condition occurs, clear the ORE flag
and recover communication */
if (USART_GetFlagStatus(USART1, USART_FLAG_ORE) != RESET)
{
(void)USART_ReceiveData(USART1);
}
if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
{
/* Write one byte to the transmit data register */
USART_SendBufferData();
}
}
void serialout(USART_TypeDef* uart, unsigned int intr)
{
int fd;
char c;
int doread = 1;
mkfifo("/dev/tty0/out", 0);
fd = open("/dev/tty0/out", 0);
while (1) {
if (doread)
read(fd, &c, 1);
doread = 0;
if (USART_GetFlagStatus(uart, USART_FLAG_TXE) == SET) {
USART_SendData(uart, c);
USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
doread = 1;
}
interrupt_wait(intr);
USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
}
}
void EVAL_COM2_IRQHandler(void)
{
extern int bypass_mode;
if (USART_GetITStatus(EVAL_COM2, USART_IT_RXNE) != RESET)
{
if(bypass_mode)
USART_To_USB_Send_Data();
else
usart_2_rx_buffer(USART_ReceiveData(EVAL_COM2));
}
/* If overrun condition occurs, clear the ORE flag and recover communication */
if (USART_GetFlagStatus(EVAL_COM2, USART_FLAG_ORE) != RESET)
{
(void)USART_ReceiveData(EVAL_COM2);
}
}
size_t USARTSerial::write(uint8_t c)
{
// interrupts are off and data in queue;
if ((USART_GetITStatus(usartMap->usart_peripheral, USART_IT_TXE) == RESET)
&& _tx_buffer.head != _tx_buffer.tail) {
// Get him busy
USART_ITConfig(usartMap->usart_peripheral, USART_IT_TXE, ENABLE);
}
unsigned i = (_tx_buffer.head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
// no space so or Called Off Panic with interrupt off get the message out!
// make space Enter Polled IO mode
while (i == _tx_buffer.tail || ((__get_PRIMASK() & 1) && _tx_buffer.head != _tx_buffer.tail) ) {
// Interrupts are on but they are not being serviced because this was called from a higher
// Priority interrupt
if (USART_GetITStatus(usartMap->usart_peripheral, USART_IT_TXE) && USART_GetFlagStatus(usartMap->usart_peripheral, USART_FLAG_TXE))
{
// protect for good measure
USART_ITConfig(usartMap->usart_peripheral, USART_IT_TXE, DISABLE);
// Write out a byte
USART_SendData(usartMap->usart_peripheral, _tx_buffer.buffer[_tx_buffer.tail++]);
_tx_buffer.tail %= SERIAL_BUFFER_SIZE;
// unprotect
USART_ITConfig(usartMap->usart_peripheral, USART_IT_TXE, ENABLE);
}
}
_tx_buffer.buffer[_tx_buffer.head] = c;
_tx_buffer.head = i;
transmitting = true;
USART_ITConfig(usartMap->usart_peripheral, USART_IT_TXE, ENABLE);
return 1;
}
/**
* @brief This function handles USART1 interrupt request.
* @param None
* @retval None
* @global
*/
void Uart1_IRQHandler(void)
{
unsigned char RxByte = 0x00;
if (USART_GetFlagStatus(USART1, USART_FLAG_ORE) != RESET){ // 溢出
// 注意！不能使用if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)来判断
// http://bbs.21ic.com/icview-160999-1-1.html
USART_ReceiveData(USART1);
}
// 接收中断 (接收寄存器非空)
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET){
// Clear the USART1 Receive interrupt
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
// unsigned char com_data = USART1->DR;
// Read one byte from the receive data register
RxByte = USART_ReceiveData(USART1);
if((cmdStart == FALSE) && (RxByte == BYTE_START)){
cmdStart = TRUE;
RxCounter = 0;
cmdLen = RX_BUFFER_SIZE;
}
else if(cmdStart == TRUE){
RxBuf[RxCounter++] = RxByte;
if(RxCounter == 2){
cmdLen = RxByte + 4; // cmd code + parameter number + Xor byte + end byte
}
else if(RxCounter == cmdLen){
RxComplete = TRUE;
}
else if(RxCounter >= 28){ // 目前最多不超过28(写块)个字节
RxCounter = 28;
}
}
}
}
void poll_serial()
{
uint8_t c;
if(USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == RESET)
{return;}
c=USART_ReceiveData(USART2);
if(state<3)
{
*dlc=0;
}
if(state<0)
{
if(c==0xFF)
{
state=0;
}
}
else if(state>=0 && state<*dlc+3)
{
can_frame[state]=c;
state++;
}
else if(state>=*dlc+3)
{
if(c==0xFF)
{
canout();
serial_putstr("OK\r",3);
state=0;
}
else
{
state=-1;
}
}
}
unsigned char _Device_Uart_Send_Bytes(unsigned char *sendByte, unsigned int length){
unsigned int i;
//if(Usart_Peripheral_Enable_Flag == DeviceOff){
if((Usart_Peripheral_Flag & fUart_Enable) == 0){
return Func_Fail;
}
#if (_Set_UART_AS_Half_Duplex_Transmission_ == 1)
_Device_Set_Uart_RX_Interrupt(DeviceOff);
#endif
//GPIO_WriteHigh(LED2_PORT, LED2_PIN);
//set TX status
// GPIO_WriteHigh(URAT_TX_Setting_PORT, URAT_TX_Setting_PIN);
// GPIO_WriteHigh(URAT_TX_Setting_PORT, URAT_TX_Setting_PIN); //for delay
for(i = 0; i < length; i++){
USART_SendData8(USART1, (*(sendByte + i)));
SendingWhileTimeOutCount = 0;
//while (USART_GetFlagStatus(USART1, UART2_FLAG_TXE) == RESET){ //Transmit Data Register Empty flag
while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET){ //Transmission Complete flag
if(SendingWhileTimeOutCount >= SendingTimeOutCycle){
break;
}
SendingWhileTimeOutCount++;
}//while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
}
//disable TX status
// GPIO_WriteLow(URAT_TX_Setting_PORT, URAT_TX_Setting_PIN);
// GPIO_WriteLow(URAT_TX_Setting_PORT, URAT_TX_Setting_PIN); //for delay
//GPIO_WriteLow(LED2_PORT, LED2_PIN);
#if (_Set_UART_AS_Half_Duplex_Transmission_ == 1)
_Device_Set_Uart_RX_Interrupt(DeviceOn);
#endif
return Func_Complete;
}
void Com_USART2_Init()
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitTypeStructure;
NVIC_InitTypeStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitTypeStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitTypeStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitTypeStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitTypeStructure);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART Rx as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_Init(GPIOA, &GPIO_InitStructure);
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_ITConfig(USART2, USART_IT_RXNE, ENABLE);
//USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
USART_Cmd(USART2, ENABLE);
USART_SendData(USART2, 0); //dummpy send
while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
}
//-----------------------------------------------------------------------------
// осуществляет сброс и проверку на наличие устройств на шине
//-----------------------------------------------------------------------------
uint8_t OW_Reset() {
uint8_t ow_presence;
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 9600;
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_Tx | USART_Mode_Rx;
USART_Init(OW_USART, &USART_InitStructure);
// отправляем 0xf0 на скорости 9600
USART_ClearFlag(OW_USART, USART_FLAG_TC);
USART_SendData(OW_USART, 0xf0);
while (USART_GetFlagStatus(OW_USART, USART_FLAG_TC) == RESET) {
#ifdef OW_GIVE_TICK_RTOS
taskYIELD();
IWDG_ReloadCounter();
#endif
}
ow_presence = USART_ReceiveData(OW_USART);
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_Tx | USART_Mode_Rx;
USART_Init(OW_USART, &USART_InitStructure);
if (ow_presence != 0xf0) {
return OW_OK;
}
return OW_NO_DEVICE;
}
/************************************************************************************//**
** \brief Callback that gets called each time new log information becomes
** available during a firmware update.
** \param info_string Pointer to a character array with the log entry info.
** \return none.
**
****************************************************************************************/
void FileFirmwareUpdateLogHook(blt_char *info_string)
{
/* write the string to the log file */
if (logfile.canUse == BLT_TRUE)
{
if (f_puts(info_string, &logfile.handle) < 0)
{
logfile.canUse = BLT_FALSE;
f_close(&logfile.handle);
}
}
/* echo all characters in the string on UART */
while(*info_string != '\0')
{
/* write character to transmit holding register */
USART_SendData(USART6, *info_string);
/* wait for tx holding register to be empty */
while(USART_GetFlagStatus(USART6, USART_FLAG_TXE) == RESET);
/* point to the next character in the string */
info_string++;
}
} /*** end of FileFirmwareUpdateLogHook ***/
uint32_t USART_SendBlock(USART_TypeDef *USARTPort, uint8_t txbuf, uint8_t buflen)
{
uint8_t bToSend, bSent, timeOut;
bToSend = buflen;
bSent = 0;
while (bToSend)
{
/* if(!(USARTPort->SR & USART_FLAG_TXE))
{
break;
}*/
while(USART_GetFlagStatus(USARTPort, USART_FLAG_TXE))
{
USART_SendData(USARTPort, txbuf++);
bToSend--;
bSent++;
}
}
return bSent;
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
uint16_t v;
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f4xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
USART_Configuration();
for(v=0;v<257;v++)
data_buf[v]=v;
/*data_buf[0]= 0x04;
data_buf[1]= 0x06;
data_buf[2]=0x02;
data_buf[3]=0x32;
data_buf[4]= 0x06;
data_buf[5]= 0x06;
data_buf[6]= 0x06;
data_buf[7]= 0x06;
*/
config_frame(0, 0, 0,3);//configurin frame preamble,head,tail and dlay
send_frame( data_buf,25); //adding info to frame
delay();
for(v=0;v<=tx_buffer.index;v++)
{
USART_SendData(USART2, tx_buffer.frame_buffer[v]);
while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
if((v%11==0)&&(v!=0))
delay();
}
}
int Test_fgetc(void)
{
uint8_t ch = 0;
while (1)
{
if(ESC(escape)==1)
break;
}
while(DBGU_RxBufferHead == DBGU_RxBufferTail);
ch = DBGU_RxBuffer[DBGU_RxBufferTail];
DBGU_RxBufferTail = (DBGU_RxBufferTail + 1) % DBGU_RX_BUFFER_SIZE;
if (DBGU_RxBufferHead == DBGU_RxBufferTail)
{
DBGU_InputReady = 0;
escape = 0;
}
while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
return ch;
}int ESC(int escape)
void Usart_Configuration(void) //配置Usart1 Tx->PA9 Rx->PA10
{
GPIO_InitTypeDef GPIO_InitStructure; //GPIO库函数结构体
USART_InitTypeDef USART_InitStructure;//USART库函数结构体
USART_ClockInitTypeDef USART_ClockInitStructure;
//使能串口1，GPIOA，AFIO总线
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO|RCC_APB2Periph_USART1,ENABLE);
/* Configure USART1 Tx (PA9) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//PA9时钟速度50MHz
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用输出
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART1 Rx (PA10) as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate =115200; //波特率9600
USART_InitStructure.USART_WordLength = USART_WordLength_8b; //8位数据
USART_InitStructure.USART_StopBits = USART_StopBits_1; //1个停止位
USART_InitStructure.USART_Parity = USART_Parity_No; //奇偶失能
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //硬件流控制失能
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //发送、接收使能
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;//空闲时钟为低电平
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;//时钟第二个边沿进行数据捕获
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;//最后一位数据的时钟脉冲不从SCLK输出
//使能串口1接收中断
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure); //初始化结构体
USART_Cmd(USART1, ENABLE); //使能串口1
// USART_ClearFlag(USART1,USART_FLAG_TC);//清除发送完成标志，不然有时可能会有第一个字符发送不出去的情况
USART_GetFlagStatus(USART1, USART_FLAG_TC);//清除发送完成标志，不然有时可能会有第一个字符发送不出去的情况
}
///////////////////
///串口发送数据
///@param pbuffer 需要发送数据的首地址
///@param size 需要发送的数据的长度
///@retval 发送是否成功 -false:发送失败（队列溢出） -true:发送成功（即将发送）
///////////////////
bool USART::SendData(uint8_t *pbuffer, uint32_t size)
{
//将需要发送的数据放入缓冲区队列
bufferTx.Puts(pbuffer,size);
if(mUseDma && !isBusySend)//使用DMA并且没有忙于发送，则开启发送
{
//断发送队列里是否还存在数据，如果存在，继续发送，否则关闭DMA
if(bufferTx.Size()>0)
{
isBusySend=true; //标记忙于发送
if(bufferTx.Size()<=USART_DMA_TX_BUFFER_SIZE) //队列中的数据长度小于dma缓冲区的最大长度
{
dmaChannelTx->CNDTR = (uint32_t)bufferTx.Size();
bufferTx.Gets(bufferTxDma,bufferTx.Size());//将剩下的数据放到dma缓冲区
}
else
{
dmaChannelTx->CNDTR = USART_DMA_TX_BUFFER_SIZE;
bufferTx.Gets(bufferTxDma,USART_DMA_TX_BUFFER_SIZE);//将数据放到dma缓冲区
}
DMA_Cmd (dmaChannelTx,ENABLE); //使能DMA,开始发送
}
}
if(!mUseDma && !isBusySend)//使用中断发送
{
if(bufferTx.Size()>0)//数据区确实存在数据
{
USART_ClearITPendingBit(usart, USART_IT_TC); //清标记，防止第一个数据发送不出去的情况，一定是要先清再打开
USART_ITConfig(usart, USART_IT_TC, ENABLE);//开启发送中断，然后发送数据
USART_GetFlagStatus(usart, USART_FLAG_TC);//读取sr，清除发送完成标志，不然有时可能会有第一个字符发送不出去的情况
isBusySend=true;
static u8 dataToSend=0;
bufferTx.Get(dataToSend);
USART_SendData(usart,dataToSend);
}
}
return 1;
}
void PowerWatchProc(void *pdata)
{
u32 nVoltage;
char pStr[32], *p;
pdata = pdata;
for(;;)
{
nVoltage = GetADCValue(ADC_Channel_11);
sprintf(pStr, "ADC_Value:%d\r\n", nVoltage);
for(p = pStr; *p; p++)
{
USART_SendData(USART1, (uint8_t)*p);
while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET){};
}
if(nVoltage < POWER_UV_LIMIT)
{
//输入电压过低,应进行保护处理
}
OSTimeDly(100);
}
}
extern int _write( int file, char *ptr, int len )
{
int iIndex ;
// for ( ; *ptr != 0 ; ptr++ )
for ( iIndex=0 ; iIndex < len ; iIndex++, ptr++ )
{
// UART_PutChar( *ptr ) ;
USART_SendData(USART1,*ptr);
// Check if the transmitter is ready
//while ((UART->UART_SR & UART_SR_TXRDY) != UART_SR_TXRDY)
while (USART_GetFlagStatus(USART1,USART_FLAG_TC) != SET)
;
// Send character
//UART->UART_THR = *ptr;
}
return iIndex ;
}
void USART1_IRQHandler(void)
{
if(USART_GetITStatus(USART1, USART_IT_TC) != RESET)
{
USART_ClearITPendingBit(USART1, USART_IT_TC);
if(USART_GetFlagStatus(USART1, USART_FLAG_TXE)!=RESET)
{
GPIO_WriteBit(GPIOA, GPIO_Pin_4, Bit_RESET);
USART_ITConfig(USART1, USART_IT_TC, DISABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
}
}
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
canal_rx_buf[canal_rx_cnt]=USART_ReceiveData(USART1);
canal_rx_cnt++;
if(canal_rx_cnt>=BUF_SIZE) canal_rx_cnt=0;
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
TIM2->CNT=0;
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f0xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f0xx.c file
*/
/* USARTx configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
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;
STM_EVAL_COMInit(COM1, &USART_InitStructure);
/* Output a message on Hyperterminal using printf function */
printf("\n\rUSART Printf Example: retarget the C library printf function to the USART\n\r");
/* Loop until the end of transmission */
/* The software must wait until TC=1. The TC flag remains cleared during all data
transfers and it is set by hardware at the last frame’s end of transmission*/
while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
{}
while (1)
{
}
}
void serialin(void* arg)
{
int fd;
char c;
mkfifo("/dev/tty0/in", 0);
fd = open("/dev/tty0/in", 0);
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
while (1) {
// interrupt_wait(intr);
interrupt_wait(USART2_IRQn);
/* if (USART_GetFlagStatus(uart, USART_FLAG_RXNE) == SET) {
c = USART_ReceiveData(uart);
*/
if (USART_GetFlagStatus((USART_TypeDef *)USART2, USART_FLAG_RXNE) == SET) {
c = USART_ReceiveData((USART_TypeDef *)USART2);
write(fd, &c, 1);
}
}
}
/**
* @brief This function handles USART3 global interrupt request.
* @param None
* @retval None
*/
void USART3_IRQHandler(void)
{
/* If a Frame error is signaled by the card */
if(USART_GetITStatus(USART3, USART_IT_FE) != RESET)
{
/* Clear the USART3 Frame error pending bit */
USART_ClearITPendingBit(USART3, USART_IT_FE);
USART_ReceiveData(USART3);
/* Resend the byte that failed to be received (by the Smartcard) correctly */
SC_ParityErrorHandler();
}
/* If the USART3 detects a parity error */
if(USART_GetITStatus(USART3, USART_IT_PE) != RESET)
{
while(USART_GetFlagStatus(USART3, USART_FLAG_RXNE) == RESET)
{
}
/* Clear the USART3 Parity error pending bit */
USART_ClearITPendingBit(USART3, USART_IT_PE);
USART_ReceiveData(USART3);
}
/* If a Overrun error is signaled by the card */
if(USART_GetITStatus(USART3, USART_IT_ORE) != RESET)
{
/* Clear the USART3 Frame error pending bit */
USART_ClearITPendingBit(USART3, USART_IT_ORE);
USART_ReceiveData(USART3);
}
/* If a Noise error is signaled by the card */
if(USART_GetITStatus(USART3, USART_IT_NE) != RESET)
{
/* Clear the USART3 Frame error pending bit */
USART_ClearITPendingBit(USART3, USART_IT_NE);
USART_ReceiveData(USART3);
}
}
uint8_t Iap_wait(void)
{
uint8_t temp = 0;
static uint8_t flag = 0;
while (USART_GetFlagStatus(UART7, USART_IT_RXNE) != RESET)
{
temp = (uint8_t)USART_ReceiveData(UART7);
switch(flag)
{
case 0: if(temp == ':')flag = 1;break;
case 1:
case 2:
case 3:
case 4:
case 5:
case 6: if(temp != ';')flag++; break;
case 7: if(temp == ';')flag = 8;break;
default:break;
}
if(flag == 8)break;
}
return flag;
}
//Task For Sending Data Via USART
void vUsartSendTask(void *pvParameters)
{
//Variable to store received data
uint32_t Data;
uint8_t curr_char;
while(1) {
serial_str_msg msg;
while (!xQueueReceive(xQueueUARTSend , &msg, portMAX_DELAY));
/* Write each character of the message to the RS232 port. */
curr_char = 0;
while (msg.str[curr_char] != '\0') {
//Wait till the flag resets
while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
//Send the data
USART_SendData(USART2, msg.str[curr_char]); // Send Char from queue
curr_char++;
}
}
while(1);
}
void USART1_IRQHandler(void)
{
u8 res; //存储接收到的数据
u8 err; //串口硬件错误出发的中断
if(USART_GetITStatus(USART1,USART_IT_RXNE)!=RESET) //接收中断
{
if(USART_GetFlagStatus(USART1,USART_FLAG_NE|USART_FLAG_FE|USART_FLAG_PE))
err=1;//检查到噪音、帧错误或校验错误
else
err=0;
res=USART_ReceiveData(USART1); //读接收到的字节，同时相关标志自动清除
if((RS485_RX_CNT<2047)&&(err==0)) //接收到的字节数量，在合理的范围内，同时无其他错误
{
RS485_RX_BUFF[RS485_RX_CNT]=res; //获取数据
RS485_RX_CNT++; //计数
TIM_ClearITPendingBit(TIM1,TIM_IT_Update); //清除定时器溢出中断
TIM_SetCounter(TIM1,0); //当接收到一个新的字节时,将定时器1复位为0,重新计时(相当于watchdog)
TIM_Cmd(TIM1,ENABLE); //使能定时器1，开始计时
}
}
}
void vMBMasterPortSerialEnable(BOOL xRxEnable, BOOL xTxEnable)
{
if (xRxEnable)
{
/* 485通信时，等待串口移位寄存器中的数据发送完成后，再去使能485的接收、失能485的发送*/
while (!USART_GetFlagStatus(USART2,USART_FLAG_TC));
MASTER_RS485_RECEIVE_MODE;
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
}
else
{
MASTER_RS485_SEND_MODE;
USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
}
if (xTxEnable)
{
USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
}
else
{
USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
}
}
void UART4_IRQHandler(void)
{
if(USART_GetITStatus(UART4, USART_IT_TC) != RESET)
{
USART_ClearITPendingBit(UART4, USART_IT_TC);
if(USART_GetFlagStatus(UART4, USART_FLAG_TXE)!=RESET)
{
GPIO_WriteBit(GPIOD, GPIO_Pin_7, Bit_RESET);
USART_ITConfig(UART4, USART_IT_TC, DISABLE);
USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);
}
}
if(USART_GetITStatus(UART4, USART_IT_RXNE) != RESET)
{
canal2_rx_buf[canal2_rx_cnt]=USART_ReceiveData(UART4);
if(canal2_rx_buf[canal2_rx_cnt]=='$') ascii_type2=_RELKON;
if(canal2_rx_buf[canal2_rx_cnt]==':') {ascii_type2=_MODBUS;}
canal2_rx_cnt++;
if(canal2_rx_cnt>=BUF_SIZE) canal2_rx_cnt=0;
USART_ClearITPendingBit(UART4, USART_IT_RXNE);
TIM5->CNT=0;
}
}
static int uart_putchar(int data)
{
char c = (char) data;
#ifdef ENABLE_TX_DMA
int i, j, n;
//wait ... no enough fifo space to use
do {
n = DMA_GetCurrDataCounter(dma_ch_tx);
} while(TX_FIFO_SZ - n < 1);
//copy
DMA_Cmd(dma_ch_tx, DISABLE);
n = DMA_GetCurrDataCounter(dma_ch_tx);
uart_fifo_tp += uart_fifo_tn - n;
if(uart_fifo_tp + n + 2 > TX_FIFO_SZ) {
for(i = 0, j = uart_fifo_tp; i < n; i ++, j ++) {
if(i != j)
uart_fifo_tx[i] = uart_fifo_tx[j];
}
uart_fifo_tp = 0;
}
else {
i = uart_fifo_tp + n;
}
uart_fifo_tx[i ++] = c;
n ++;
uart_fifo_tn = n;
uart_SetupTxDMA(uart_fifo_tx + uart_fifo_tp, n);
#else
USART_SendData(uart, c);
while(USART_GetFlagStatus(uart, USART_FLAG_TXE) == RESET);
#endif
return 0;
}
void sendTxDMA(uint32_t adress,uint32_t size){
DMA_InitStructure.DMA_Channel = USARTx_TX_DMA_CHANNEL ;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral ;
DMA_InitStructure.DMA_Memory0BaseAddr = adress;
DMA_InitStructure.DMA_BufferSize = size;
DMA_Init(USARTx_TX_DMA_STREAM,&DMA_InitStructure);
/* Enable DMA USART TX Stream */
DMA_Cmd(USARTx_TX_DMA_STREAM,ENABLE);
/* Enable USART DMA TX Requests */
USART_DMACmd(USARTx, USART_DMAReq_Tx, ENABLE);
/* Waiting the end of Data transfer */
while (USART_GetFlagStatus(USARTx,USART_FLAG_TC)==RESET);
while (DMA_GetFlagStatus(USARTx_TX_DMA_STREAM,USARTx_TX_DMA_FLAG_TCIF)==RESET);
/* Clear DMA Transfer Complete Flags */
DMA_ClearFlag(USARTx_TX_DMA_STREAM,USARTx_TX_DMA_FLAG_TCIF);
DMA_Cmd(USARTx_TX_DMA_STREAM, DISABLE);
/* Clear USART Transfer Complete Flags */
USART_ClearFlag(USARTx,USART_FLAG_TC);
USART_DMACmd(USARTx, USART_DMAReq_Tx, DISABLE);
}
//////////////////////////////////////////
//tyh:用于和 AI采样芯片通信
void COM3_Configuration(uint32_t BaudRate)
{
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = BaudRate;
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(USART3, &USART_InitStructure);
DMA_ITConfig(DMA1_Channel2, DMA_IT_TC, ENABLE); //设置发送完成中断
//USART_ITConfig(USART3, /*USART_IT_ORE*/USART_IT_RXNE, ENABLE); //设置ORE中断 0x0360
USART_DMACmd(USART3, USART_DMAReq_Tx, ENABLE); //启用DMA传输
USART_DMACmd(USART3, USART_DMAReq_Rx , ENABLE);
USART_Cmd(USART3, ENABLE);
//如下语句解决第1个字节无法正确发送出去的问题
USART_GetFlagStatus(USART3, USART_FLAG_TC); // 清标志
}
signed portBASE_TYPE xSerialPutChar( signed portCHAR cOutChar, portTickType xBlockTime )
{
signed portBASE_TYPE xReturn;
#ifdef USE_INT
if( xQueueSend( xCharsForTx, &cOutChar, xBlockTime ) == pdPASS )
{
xReturn = pdPASS;
//USART_ITConfig( USART_PORT, USART_IT_TXE, ENABLE );
}
else
{
xReturn = pdFAIL;
}
#else
USART_CON_TOSEND;
USART_SendData(USART_PORT, (u8)cOutChar);
while(USART_GetFlagStatus(USART_PORT, USART_IT_TXE) == RESET) {}
GPIO_ResetBits(USART_GPIO, USART_RTS_PIN);
xReturn = pdPASS;
#endif
return xReturn;
}