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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 rxdata, txdata = 0x23;
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SPI_InitStructure SPI_initStruct;
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SystemInit();
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SerialInit();
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PORT_Init(PORTB, PIN15, PORTB_PIN15_SPI0_SSEL, 0);
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PORT_Init(PORTB, PIN10, PORTB_PIN10_SPI0_SCLK, 0);
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PORT_Init(PORTB, PIN13, PORTB_PIN13_SPI0_MOSI, 0); //将MOSI与MISO连接，自发、自收、然后打印
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PORT_Init(PORTB, PIN14, PORTB_PIN14_SPI0_MISO, 1);
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SPI_initStruct.clkDiv = SPI_CLKDIV_4;
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SPI_initStruct.FrameFormat = SPI_FORMAT_SPI;
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SPI_initStruct.SampleEdge = SPI_SECOND_EDGE;
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SPI_initStruct.IdleLevel = SPI_LOW_LEVEL;
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SPI_initStruct.WordSize = 8;
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SPI_initStruct.Master = 1;
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SPI_initStruct.RXThreshold = 0;
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SPI_initStruct.RXThresholdIEn = 0;
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SPI_initStruct.TXThreshold = 0;
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SPI_initStruct.TXThresholdIEn = 0;
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SPI_initStruct.TXCompleteIEn = 0;
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SPI_Init(SPI0, &SPI_initStruct);
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SPI_Open(SPI0);
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while(1==1)
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{
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rxdata = SPI_ReadWrite(SPI0, txdata);
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txdata = rxdata + 1; //将SPI0_MOSI与SPI0_MISO短接，则可看到打印数值加一递增
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printf("rxdata: 0x%X\r\n", rxdata);
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for(int i = 0; i < SystemCoreClock/10; 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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