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/*********************************************************************
* spi_nrf24l01.c *********************************************************************/ #include #include #include "inc/hw_memmap.h" #include "driverlib/ssi.h" #include "driverlib/pin_map.h" #include "driverlib/sysctl.h" #include "driverlib/gpio.h" #include "driverlib/uart.h" #include "utils/uartstdio.h" #include "nrf24l01.h" #define SSI_BitRate 1000000 // Define a static TX address uint8_t TX_ADDRESS[TX_ADR_WIDTH] = [0x34,0x43,0x10,0x10,0x01]; uint8_t RX_ADDRESS[RX_ADR_WIDTH] = [0x34,0x43,0x10,0x10,0x01]; uint8_t TX_Buf[TX_PLOAD_WIDTH]=['s','p','i','s']; uint8_t RX_Buf[TX_PLOAD_WIDTH] = ['0','1','2','3']; uint8_t sta; //********************************************************************* //SPI initialization,??TM4C123GH6PM?SPI?? void SPI_TM4C123_init(void) [ uint32_t ui32Data; SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); GPIOPinConfigure(GPIO_PA2_SSI0CLK); GPIOPinConfigure(GPIO_PA3_SSI0FSS); GPIOPinConfigure(GPIO_PA4_SSI0RX); GPIOPinConfigure(GPIO_PA5_SSI0TX); SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0); GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_5|GPIO_PIN_4|GPIO_PIN_3|GPIO_PIN_2); SSIConfigSetExpClk(SSI0_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0,SSI_MODE_MASTER,SSI_BitRate,8); SSIEnable(SSI0_BASE); while(SSIDataGetNonBlocking(SSI0_BASE, &ui32Data))[] ] //********************************************************************************* //UART??? void InitConsole(void) [ SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); GPIOPinConfigure(GPIO_PA0_U0RX); GPIOPinConfigure(GPIO_PA1_U0TX); //UARTClockSourceSet(UART0_BASE, UART_CLOCK_PIOSC); GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1); UARTStdioConfig(0, 115200, 50000000); ] //********************************************************************** // uint8_t SPI_RW(uint8_t value) [ uint32_t ui32Data; uint8_t ui8Data; SSIDataPut(SSI0_BASE,value); while (SSIBusy(SSI0_BASE))[] SSIDataGet(SSI0_BASE, &ui32Data); ui8Data = ui32Data & 0xff; return(ui8Data); ] //******************************************************************** //ÓÃSPIÅäÖÃnrf24l01µÄ¼Ä´æÆ÷º¯Êý uint8_t SPI_Write_register(uint8_t WriteReg,uint8_t Value)//WriteRegҪдµÄ¼Ä´æÆ÷µØÖ·,ValueҪдµÄ¼Ä´æÆ÷Öµ [ uint8_t status; //UARTprintf("nSPI_Wreg ->n"); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE,GPIO_PIN_3); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,0); status=SPI_RW(WriteReg); SPI_RW(Value); //UARTprintf("'%x' ", status); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,GPIO_PIN_3); return(status); ] //********************************************************************** uint8_t SPI_Write_Buf(uint8_t WriteReg, uint8_t *pBuf, uint8_t bytes) [ uint8_t i,status; //UARTprintf("nSPI_WBuf ->n"); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,0); status=SPI_RW(WriteReg); for(i=0; i SPI_RW(*pBuf++); ] GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,GPIO_PIN_3); return(status); ] //*************************************************************************// uint8_t SPI_Red_Buf(uint8_t WriteReg, uint8_t *pBuf, uint8_t bytes) [ uint8_t i,status; //UARTprintf("nSPI_ RBuf ->n"); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,0); status=SPI_RW(WriteReg); for(i=0; i pBuf = SPI_RW(0); ] GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,GPIO_PIN_3); return(status); ] //************************************************************************* uint8_t SPIReadStatus(uint8_t reg) [ uint8_t status; UARTprintf("nRead Status ->n"); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,0); SPI_RW(reg); status=SPI_RW(0); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,GPIO_PIN_3); UARTprintf("'%x' ", status); return(status); ] //*********************************************************************** void nrf24l01init(void) [ GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); // ´¦ÓÚ´ý»úģʽһ£¬ËùÒÔ¿ÉÒÔд¼Ä´æÆ÷ SPI_Write_register(FLUSH_TX,0x00); SPI_Write_register(WRITE_REG+EN_AA,0X00);//ʹÄÜͨµÀ×Ô¶¯Ó¦´ð£¬ ·½±ãµ¥¶Àµ÷ÊÔ SPI_Write_register(WRITE_REG+EN_RXADDR,0X00);//ʧÄܽÓÊÜͨµÀ0£¬·½±ãµ¥¶Àµ÷ÊÔ·¢ËÍÄ£¿é SPI_Write_register(WRITE_REG+SETUP_RETR,0x00);//ʧÄÜ×Ô¶¯ÖØ·¢ SPI_Write_register(WRITE_REG + RF_CH, 0x02); // Select RF channel 40 SPI_Write_register(WRITE_REG +RX_PW_P0,RX_PLOAD_WIDTH); SPI_Write_register(WRITE_REG + RF_SETUP, 0x07); // TX_PWR:0dBm, Datarate:1Mbps, LNA:HCURR SPI_Write_register(WRITE_REG+STATUS,0xff); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,GPIO_PIN_6); SysCtlDelay(235);// ] //************************************************************************* void nrf24l01TxMode(void)//·¢ËÍģʽ [ GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // Writes TX_Address to nRF24L01 SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); SPI_Write_register(FLUSH_TX,0x00); SPI_Write_Buf(WR_TX_PLOAD, TX_Buf, TX_PLOAD_WIDTH); // Writes dat SPI_Write_register(WRITE_REG + CONFIG, 0x0e); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,GPIO_PIN_6); SysCtlDelay(185);//10us GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); ] void nrf24l01RxMode(void)//½ÓÊÜģʽ [ GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); // ´¦ÓÚ´ý»úģʽһ£¬ËùÒÔ¿ÉÒÔд¼Ä´æÆ÷ SPI_Write_register(FLUSH_TX,0x00); SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); SPI_Write_register(WRITE_REG+EN_AA,0X01);//ʹÄÜͨµÀ×Ô¶¯Ó¦´ð£¬ ·½±ãµ¥¶Àµ÷ÊÔ SPI_Write_register(WRITE_REG+EN_RXADDR,0X01);//ʧÄܽÓÊÜͨµÀ0£¬·½±ãµ¥¶Àµ÷ÊÔ·¢ËÍ SPI_Write_register(WRITE_REG + RF_CH, 0x40); // Select RF channel 40 SPI_Write_register(WRITE_REG +RX_PW_P0,TX_PLOAD_WIDTH); SPI_Write_register(WRITE_REG + RF_SETUP, 0x07); // TX_PWR:0dBm, Datarate:1Mbps, LNA:HCURR SPI_Write_register(WRITE_REG+STATUS,0xff); SPI_Write_register(WRITE_REG + CONFIG, 0x0f); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,GPIO_PIN_6); SysCtlDelay(185);//10usÒÔÉÏ GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); ] //***************************************************************************// uint8_t NRFRevDate(uint8_t *RevDate) [ uint8_t RevFlags=0; GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,GPIO_PIN_6); SysCtlDelay(185);//10usÒÔÉÏ sta=SPIReadStatus(R_REGISTER+STATUS); if(sta&0x40) // ????????? [ GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); SPI_Red_Buf(R_RX_PAYLOAD,RevDate,RX_PLOAD_WIDTH);// ?RXFIFO???? GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,0); SPI_RW(FLUSH_RX);//ÓÃÓÚÇå¿ÕFIFO ¹Ø¼ü£¡£¡£¡£¡£¡£¡£¡£¡ GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_3,GPIO_PIN_3); RevFlags=1; //???????? ] SPI_Write_register(WRITE_REG+STATUS,0xff); //??????RX_DR,TX_DS,MAX_PT????1,???1?????? return(RevFlags); //RevFlags ] //*************************************************************************** //????????,????????? void testTXWin(void) [ uint32_t ui32Loop; uint8_t status,FIFOStatus; status=SPIReadStatus(STATUS); FIFOStatus=SPIReadStatus(FIFO_STATUS); if(status==0x0e&&FIFOStatus==0x11)//???? [ SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF); GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE,GPIO_PIN_1); GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,GPIO_PIN_1); for(ui32Loop = 0; ui32Loop < 2000000; ui32Loop++)[] GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,0); for(ui32Loop = 0; ui32Loop < 2000000; ui32Loop++)[] ] ] //*************************************************************************** int main(void) [ uint8_t temp; SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ | SYSCTL_OSC_MAIN); InitConsole(); UARTprintf("SSI ->n"); UARTprintf(" Mode: SPIn"); UARTprintf(" Data: 8-bitnn"); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE,GPIO_PIN_6); GPIOPinTypeGPIOInput(GPIO_PORTA_BASE,GPIO_PIN_7); GPIOPinWrite(GPIO_PORTA_BASE,GPIO_PIN_6,0); SPI_TM4C123_init(); //nrf24l01init(); //???????? nrf24l01RxMode(); while(1) [ //nrf24l01TxMode(); testTXWin(); while(NRFRevDate(RX_Buf))[;] //UARTprintf("'%c' '%c' '%c' '%c'n",RX_Buf[0],RX_Buf[1],RX_Buf[2],RX_Buf[3]); SPI_Write_register(WRITE_REG+STATUS,0xff); ] ] 发送程序前面帖子有。 
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16 个讨论
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应该是经过验证的。这些接收和发送程序应该是通用的,你可以先IO模拟，再用硬件接口驱动的。 |
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我读出来寄存器值也有问题，直接成0eh了，请问解决了吗？ |
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这个接收程序接受的是预先设定好的值，如果要接受另外一块NRF24l01发送的数据，要怎样修改程序呢？谢谢 |
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楼主您好，库文件可以分享一下吗？1610856551@qq.com 真挚感谢
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只有小组成员才能发言，加入小组>>
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