You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
#include "SWM221.h"
|
|
#include "CircleBuffer.h"
|
|
|
|
volatile bool msg_rcvd = false;
|
|
|
|
CircleBuffer_t CirBuf;
|
|
|
|
void SerialInit(void);
|
|
|
|
int main(void)
|
|
{
|
|
SystemInit();
|
|
|
|
SerialInit();
|
|
|
|
USART_InitStructure USART_initStruct;
|
|
|
|
PORT_Init(PORTA, PIN2, PORTA_PIN2_USART0_TX, 0);
|
|
PORT_Init(PORTA, PIN3, PORTA_PIN3_USART0_RX, 1);
|
|
|
|
USART_initStruct.Baudrate = 57600;
|
|
USART_initStruct.DataBits = USART_DATA_8BIT;
|
|
USART_initStruct.Parity = USART_PARITY_NONE;
|
|
USART_initStruct.StopBits = USART_STOP_1BIT;
|
|
USART_initStruct.RXReadyIEn = 1;
|
|
USART_initStruct.TXReadyIEn = 0;
|
|
USART_initStruct.TimeoutIEn = 1;
|
|
USART_initStruct.TimeoutTime = 50; // 50 个 bit 时间内未接收到新的数据，触发接收超时中断
|
|
USART_Init(USART0, &USART_initStruct);
|
|
USART_Open(USART0);
|
|
|
|
while(1==1)
|
|
{
|
|
if(msg_rcvd)
|
|
{
|
|
msg_rcvd = false;
|
|
|
|
USART_INTEn(USART0, USART_IT_TX_RDY);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void USART0_Handler(void)
|
|
{
|
|
uint8_t chr;
|
|
|
|
if(USART_INTStat(USART0, USART_IT_RX_RDY))
|
|
{
|
|
chr = USART_Read(USART0);
|
|
|
|
CirBuf_Write(&CirBuf, &chr, 1);
|
|
}
|
|
else if(USART_INTStat(USART0, USART_IT_RX_TO))
|
|
{
|
|
USART_INTClr(USART0, USART_IT_RX_TO);
|
|
|
|
msg_rcvd = true;
|
|
}
|
|
|
|
if(USART_INTStat(USART0, USART_IT_TX_RDY))
|
|
{
|
|
CirBuf_Read(&CirBuf, &chr, 1);
|
|
|
|
USART_Write(USART0, chr);
|
|
|
|
if(CirBuf_Empty(&CirBuf))
|
|
{
|
|
USART_INTDis(USART0, USART_IT_TX_RDY);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void SerialInit(void)
|
|
{
|
|
UART_InitStructure UART_initStruct;
|
|
|
|
PORT_Init(PORTA, PIN0, PORTA_PIN0_UART0_RX, 1); //GPIOA.0配置为UART0 RXD
|
|
PORT_Init(PORTA, PIN1, PORTA_PIN1_UART0_TX, 0); //GPIOA.1配置为UART0 TXD
|
|
|
|
UART_initStruct.Baudrate = 57600;
|
|
UART_initStruct.DataBits = UART_DATA_8BIT;
|
|
UART_initStruct.Parity = UART_PARITY_NONE;
|
|
UART_initStruct.StopBits = UART_STOP_1BIT;
|
|
UART_initStruct.RXThreshold = 3;
|
|
UART_initStruct.RXThresholdIEn = 0;
|
|
UART_initStruct.TXThreshold = 3;
|
|
UART_initStruct.TXThresholdIEn = 0;
|
|
UART_initStruct.TimeoutTime = 10;
|
|
UART_initStruct.TimeoutIEn = 0;
|
|
UART_Init(UART0, &UART_initStruct);
|
|
UART_Open(UART0);
|
|
}
|
|
|
|
/******************************************************************************************************************************************
|
|
* 函数名称: fputc()
|
|
* 功能说明: printf()使用此函数完成实际的串口打印动作
|
|
* 输 入: int ch 要打印的字符
|
|
* FILE *f 文件句柄
|
|
* 输 出: 无
|
|
* 注意事项: 无
|
|
******************************************************************************************************************************************/
|
|
int fputc(int ch, FILE *f)
|
|
{
|
|
UART_WriteByte(UART0, ch);
|
|
|
|
while(UART_IsTXBusy(UART0));
|
|
|
|
return ch;
|
|
}
|