//
void RCC_Configuration(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA |
RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
#if 1
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);
#endif
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(USART1, &USART_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
void USART1_IRQHandler(void)
{
u16 i;
if(USART_GetFlagStatus(USART1,USART_IT_RXNE)==SET)
{
i = USART_ReceiveData(USART1);
USART_SendData(USART1,i);
while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
{
}
}
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
}
}
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_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
USART_Configuration();
//GPIO_SetBits(GPIO_LED,DS1_PIN|DS2_PIN|DS3_PIN|DS4_PIN);/*关闭所有的LED指示灯*/
/* USART1 and USART2 configuration ------------------------------------------------------*/
/* USART1 and USART2 configured as follow:
- BaudRate = 9600 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; /*设置波特率为115200*/
//USART_InitStructure.USART_WordLength = USART_WordLength_8b;/*设置数据位为8*/
//USART_InitStructure.USART_StopBits = USART_StopBits_1; /*设置停止位为1位*/
//USART_InitStructure.USART_Parity = USART_Parity_No; /*无奇偶校验*/
//USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;/*无硬件流控*/
//USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; /*发送和接收*/
/*配置串口1 */
//USART_Init(USART1, &USART_InitStructure);
/*配置串口2*/
//USART_Init(USART2, &USART_InitStructure);
/*使能串口1的发送和接收中断*/
// USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
// USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
/*使能串口2的发送和接收中断*/
//USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
//USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
/* 使能串口1 */
//USART_Cmd(USART1, ENABLE);
/* 使能串口2 */
// USART_Cmd(USART2, ENABLE);
/* Wait until end of transmission from USART1 to USART2 */
//while(RxCounter2 < RxBufferSize2)
{
}
/* Wait until end of transmission from USART2 to USART1 */
// while(RxCounter1 < RxBufferSize1)
{
}
/* Check the received data with the send ones */
// TransferStatus1 = Buffercmp(TxBuffer2, RxBuffer1, RxBufferSize1);
/* TransferStatus1 = PASSED, if the data transmitted from USART2 and
received by USART1 are the same */
/* TransferStatus1 = FAILED, if the data transmitted from USART2 and
received by USART1 are different */
// TransferStatus2 = Buffercmp(TxBuffer1, RxBuffer2, RxBufferSize2);
/* TransferStatus2 = PASSED, if the data transmitted from USART1 and
received by USART2 are the same */
/* TransferStatus2 = FAILED, if the data transmitted from USART1 and
received by USART2 are different */
while (1)
{
// if(TransferStatus1 == PASSED)
// {
// GPIO_ResetBits(GPIO_LED,DS1_PIN);/*点亮DS1，串口1接收的数据与串口2发送的数据相同*/
// }
// else if(TransferStatus1 == FAILED)
// {
// GPIO_ResetBits(GPIO_LED,DS2_PIN);/*点亮DS2，串口1接收的数据与串口2发送的数据不相同*/
// }
//
// if(TransferStatus2 == PASSED)
// {
// GPIO_ResetBits(GPIO_LED,DS3_PIN);/*点亮DS3，串口2接收的数据与串口1发送的数据相同*/
// }
// else if(TransferStatus2 == FAILED)
// {
// GPIO_ResetBits(GPIO_LED,DS3_PIN);/*点亮DS3，串口2接收的数据与串口1发送的数据不相同*/
// }
}
}
