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#include "SWM221.h"
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void SerialInit(void);
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int main(void)
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{
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uint32_t res, i;
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UART_InitStructure UART_initStruct;
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SystemInit();
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SerialInit();
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PORT_Init(PORTA, PIN4, PORTA_PIN4_UART1_TX, 0); //GPIOA.4配置为UART0 TXD
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PORT_Init(PORTA, PIN5, PORTA_PIN5_UART1_RX, 1); //GPIOA.5配置为UART0 RXD
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UART_initStruct.Baudrate = 9600;
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UART_initStruct.DataBits = UART_DATA_8BIT;
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UART_initStruct.Parity = UART_PARITY_NONE;
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UART_initStruct.StopBits = UART_STOP_1BIT;
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UART_initStruct.RXThreshold = 3;
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UART_initStruct.RXThresholdIEn = 0;
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UART_initStruct.TXThreshold = 3;
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UART_initStruct.TXThresholdIEn = 0;
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UART_initStruct.TimeoutTime = 10;
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UART_initStruct.TimeoutIEn = 0;
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UART_Init(UART1, &UART_initStruct);
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UART_Open(UART1);
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/* 测试说明
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* 将UART0_TX脚连接到UART1_RX，UART0波特率57600，UART1波特率9600
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* 让UART0发送0xF8，UART1通过测量0xF8自动计算出波特率将自己的波特率设为57600
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****************************************************************************/
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while(1==1)
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{
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UART_ABRStart(UART1, 0xF8);
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while((res = UART_ABRIsDone(UART1)) == 0)
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{
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UART_WriteByte(UART0, 0xF8);
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while(UART_IsTXBusy(UART0));
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}
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if(res == UART_ABR_RES_OK) printf("AutoBaud OK\r\n");
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else printf("AutoBaud Error\r\n");
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printf("UART0 Baud Reg: %d\r\n", UART_GetBaudrate(UART0));
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printf("UART1 Baud Reg: %d\r\n", UART_GetBaudrate(UART1));
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for(i = 0; i < 1000000; i++);
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}
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}
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void SerialInit(void)
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{
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UART_InitStructure UART_initStruct;
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PORT_Init(PORTA, PIN0, PORTA_PIN0_UART0_RX, 1); //GPIOA.0配置为UART0 RXD
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PORT_Init(PORTA, PIN1, PORTA_PIN1_UART0_TX, 0); //GPIOA.1配置为UART0 TXD
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UART_initStruct.Baudrate = 57600;
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UART_initStruct.DataBits = UART_DATA_8BIT;
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UART_initStruct.Parity = UART_PARITY_NONE;
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UART_initStruct.StopBits = UART_STOP_1BIT;
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UART_initStruct.RXThreshold = 3;
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UART_initStruct.RXThresholdIEn = 0;
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UART_initStruct.TXThreshold = 3;
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UART_initStruct.TXThresholdIEn = 0;
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UART_initStruct.TimeoutTime = 10;
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UART_initStruct.TimeoutIEn = 0;
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UART_Init(UART0, &UART_initStruct);
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UART_Open(UART0);
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}
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/******************************************************************************************************************************************
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* 函数名称: fputc()
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* 功能说明: printf()使用此函数完成实际的串口打印动作
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* 输 入: int ch 要打印的字符
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* FILE *f 文件句柄
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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int fputc(int ch, FILE *f)
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{
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UART_WriteByte(UART0, ch);
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while(UART_IsTXBusy(UART0));
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return ch;
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}
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