#include "SWM341.h"
void SerialInit(void);
int main(void)
{
uint32_t res, i;
UART_InitStructure UART_initStruct;
SystemInit();
SerialInit();
PORT_Init(PORTD, PIN3, PORTD_PIN3_UART1_TX, 0); //GPIOD.3配置为UART1输出引脚
PORT_Init(PORTC, PIN1, PORTC_PIN1_UART2_RX, 1); //GPIOC.1配置为UART2输入引脚
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_initStruct.Baudrate = 57600;
UART_Init(UART1, &UART_initStruct);
UART_Open(UART1);
UART_initStruct.Baudrate = 9600;
UART_Init(UART2, &UART_initStruct);
UART_Open(UART2);
/* 测试说明
* 将UART1_TX脚连接到UART2_RX,UART1波特率57600,UART2波特率9600
* 让UART1发送0xF8,UART2通过测量0xF8自动计算出波特率将自己的波特率设为57600
****************************************************************************/
while(1==1)
{
UART_ABRStart(UART2, 0xF8);
while((res = UART_ABRIsDone(UART2)) == 0)
{
UART_WriteByte(UART1, 0xF8);
while(UART_IsTXBusy(UART1));
}
if(res == UART_ABR_RES_OK) printf("AutoBaud OK\r\n");
else printf("AutoBaud Error\r\n");
printf("UART1 Baud Reg: %d\r\n", UART_GetBaudrate(UART1));
printf("UART2 Baud Reg: %d\r\n", UART_GetBaudrate(UART2));
for(i = 0; i < SystemCoreClock/5; i++) __NOP();
}
}
void SerialInit(void)
{
UART_InitStructure UART_initStruct;
PORT_Init(PORTM, PIN0, PORTM_PIN0_UART0_RX, 1); //GPIOM.0配置为UART0输入引脚
PORT_Init(PORTM, PIN1, PORTM_PIN1_UART0_TX, 0); //GPIOM.1配置为UART0输出引脚
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;
}
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