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#include "SWM221.h"
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#include "IOSPI.h"
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uint16_t *SPI_TXBuff = 0;
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uint32_t SPI_TXCount = 0;
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uint32_t SPI_TXIndex = 0;
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void SerialInit(void);
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void SPISlvInit(void);
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void SPISlvSend(uint16_t buff[], uint32_t cnt);
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int main(void)
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{
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uint32_t i;
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uint16_t txbuff[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
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uint16_t rxbuff[16];
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SystemInit();
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SerialInit();
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IOSPI_Init();
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SPISlvInit();
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SPISlvSend(txbuff, 16);
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while(1==1)
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{
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IOSPI_CS_Low();
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for(i = 0; i < 16; i++)
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rxbuff[i] = IOSPI_ReadWrite(0xFF, 8);
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IOSPI_CS_High();
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for(i = 0; i < 16; i++)
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printf("%02X, ", rxbuff[i]);
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printf("\n\n");
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for(i = 0; i < SystemCoreClock/10; i++) __NOP();
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}
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}
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void SPISlvInit(void)
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{
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SPI_InitStructure SPI_initStruct;
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PORT_Init(PORTB, PIN15, PORTB_PIN15_SPI0_SSEL, 1);
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PORT_Init(PORTB, PIN10, PORTB_PIN10_SPI0_SCLK, 1);
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PORT_Init(PORTB, PIN13, PORTB_PIN13_SPI0_MOSI, 1);
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PORT_Init(PORTB, PIN14, PORTB_PIN14_SPI0_MISO, 0);
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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_HIGH_LEVEL;
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SPI_initStruct.WordSize = 8;
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SPI_initStruct.Master = 0;
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SPI_initStruct.RXThreshold = 0;
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SPI_initStruct.RXThresholdIEn = 0;
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SPI_initStruct.TXThreshold = 4; //发送FIFO中数据个数≤CTRL.TFTHR时产生中断
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SPI_initStruct.TXThresholdIEn = 1;
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SPI_initStruct.TXCompleteIEn = 0;
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SPI_Init(SPI0, &SPI_initStruct);
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SPI_INTEn(SPI0, SPI_IT_CS_FALL);
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SPI_Open(SPI0);
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}
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void SPISlvSend(uint16_t buff[], uint32_t cnt)
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{
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SPI_TXBuff = buff;
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SPI_TXCount = cnt;
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}
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void GPIOB3_GPIOA11_SPI0_Handler(void)
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{
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if(SPI0->IF & SPI_IF_TFTHR_Msk)
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{
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while(SPI0->STAT & SPI_STAT_TFNF_Msk)
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{
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if(SPI_TXIndex < SPI_TXCount)
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{
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SPI0->DATA = SPI_TXBuff[SPI_TXIndex++];
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}
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else
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{
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SPI0->DATA = 0xFF; // 没数据了，发送0xFF
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}
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}
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SPI0->IF = (1 << SPI_IF_TFTHR_Pos);
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}
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else if(SPI0->IF & SPI_IF_CSFALL_Msk)
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{
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SPI0->IF = SPI_IF_CSFALL_Msk;
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SPI_TXIndex = 0;
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SPI0->CTRL |= (1 << SPI_CTRL_TFCLR_Pos); // 发送FIFO清空
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SPI0->CTRL &= ~(1 << SPI_CTRL_TFCLR_Pos);
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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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