nrf24l01程序avr 硬件spi.doc

发送：/avr24l01.c#include#define SS_portPORTB#define SS0x10#define CE_portPORTB#define CE_ddrDDRB#define CE0x01#define IRQ_portPORTB#define IRQ_ddrDDRB#define IRQ0x02#define CONFIG0x00#define EN_AA0x01#define EN_RXADDR0x02#define SETUP_AW0x03#define SETUP_RETR0x04#define RF_CH0x05#define RF_SETUP0x06#define STATUS0x07#define OBSERVE_TX0x08#define CD0x09#define RX_ADDR_P00x0a#define RX_ADDR_P10x0b#define RX_ADDR_P20x0c#define RX_ADDR_P30x0d#define RX_ADDR_P40x0e#define RX_ADDR_P50x0f#define TX_ADDR0x10#define RX_PW_P00x11#define RX_PW_P10x12#define RX_PW_P20x13#define RX_PW_P30x14#define RX_PW_P40x15#define RX_PW_P50x16#define FIFO_STATUS0x17unsigned char get_buf=0;unsigned char RX_ADDRESS=0x01,0x02,0x03,0x04,0x01;unsigned char TX_ADDRESS=0x01,0x02,0x03,0x04,0x00;void spi_io_init(void)CE_ddr|=CE;CE_port&=CE;IRQ_ddr&=IRQ;IRQ_port|=IRQ;DDRB|=0xb0;DDRB&=0xbf;PORTB&=0x0f;void spi_init(void)spi_io_init();SS_port|=SS;SPCR=0x51;SPSR=0x00;unsigned char w_spi(unsigned char dat)unsigned char return_buf=0;SPSR&=0x7f;SPDR=dat;while(SPSR&0x80)=0);return_buf=SPDR;return(return_buf);unsigned char r_reg(unsigned char addr)unsigned char return_buf=0;SS_port&=SS;w_spi(addr);return_buf=w_spi(0);SS_port|=SS;return(return_buf);unsigned char w_reg(unsigned char addr,unsigned char dat)/return statusunsigned char return_buf=0;SS_port&=SS;return_buf=w_spi(addr+0x20);w_spi(dat);SS_port|=SS;return(return_buf);unsigned char r_buf(unsigned char *rx_buf,unsigned char num)/return statusunsigned char return_buf=0;unsigned char count=0;SS_port&=SS;return_buf=w_spi(0x61);for(count=0;countnum;count+)rx_bufcount=w_spi(0);SS_port|=SS;return(return_buf);unsigned char w_buf(unsigned char addr,unsigned char *tx_buf,unsigned char num)unsigned char return_buf=0;unsigned char count=0;SS_port&=SS;return_buf=w_spi(addr);for(count=0;countnum;count+)w_spi(tx_bufcount);SS_port|=SS;return(return_buf);void rx_mode(void)CE_port&=CE;w_buf(RX_ADDR_P0+0x20),RX_ADDRESS,5);/接收节点地址，长度为5w_reg(EN_AA,0x00);/使能接收通道0自动应答w_reg(EN_RXADDR,0x01);/使能接收通道0w_reg(RF_CH,0x40);/射频通道w_reg(RX_PW_P0,4);/有效数据宽度w_reg(RF_SETUP,0x07);/1M传输率，发射功率1dbmw_reg(CONFIG,0x0f);/16位CRC校验CE_port|=CE;void tx_mode(void)CE_port&=CE;w_buf(TX_ADDR+0x20),TX_ADDRESS,5);/发送地址，长度为5w_buf(RX_ADDR_P0+0x20),RX_ADDRESS,5);/接收节点地址w_reg(EN_AA,0x00);/使能接收通道0自动应答w_reg(EN_RXADDR,0x01);/使能接收通道0w_reg(SETUP_RETR,0x0a);/自动重发10次w_reg(RF_CH,0x40);/射频通道w_reg(RX_PW_P0,4);/有效数据宽度w_reg(RF_SETUP,0x07);/1M传输率，发射功率1dbmw_reg(CONFIG,0x0e);/16位CRC校验CE_port|=CE;void tx_data(unsigned char *dat,unsigned char num)CE_port&=CE;w_buf(TX_ADDR+0x20),TX_ADDRESS,5);/发送地址，长度为5w_buf(RX_ADDR_P0+0x20),RX_ADDRESS,5);/接收节点地址w_buf(0xa0,dat,num);w_reg(EN_AA,0x00);/使能接收通道0自动应答w_reg(EN_RXADDR,0x01);/使能接收通道0w_reg(SETUP_RETR,0x0a);/自动重发10次w_reg(RF_CH,0x40);/射频通道w_reg(RX_PW_P0,4);/有效数据宽度w_reg(RF_SETUP,0x07);/1M传输率，发射功率1dbmw_reg(CONFIG,0x0e);/16位CRC校验CE_port|=CE;void tx(unsigned char *dat,unsigned char num)CE_port&=CE;w_buf(0xa0,dat,num);CE_port|=CE;/main.c#includeextern unsigned char get_buf;void delay(unsigned int i)unsigned int j,k;for(j=0;ji;j+)for(k=0;k500;k+);int main(void)unsigned char aa5=0x04,0x03,0x02,0x01,0x00;spi_init();get_buf=r_reg(0x00);/get_buf=w_reg(0x00,0x08);/get_buf=r_buf(aa,3);tx_mode();while(1)tx(aa,4);delay(400);接收：/avr24l01.c#include#define SS_portPORTB#define SS0x10#define CE_portPORTB#define CE_ddrDDRB#define CE0x01#define IRQ_portPORTB#define IRQ_ddrDDRB#define IRQ0x02#define CONFIG0x00#define EN_AA0x01#define EN_RXADDR0x02#define SETUP_AW0x03#define SETUP_RETR0x04#define RF_CH0x05#define RF_SETUP0x06#define STATUS0x07#define OBSERVE_TX0x08#define CD0x09#define RX_ADDR_P00x0a#define RX_ADDR_P10x0b#define RX_ADDR_P20x0c#define RX_ADDR_P30x0d#define RX_ADDR_P40x0e#define RX_ADDR_P50x0f#define TX_ADDR0x10#define RX_PW_P00x11#define RX_PW_P10x12#define RX_PW_P20x13#define RX_PW_P30x14#define RX_PW_P40x15#define RX_PW_P50x16#define FIFO_STATUS0x17unsigned char get_buf=0;unsigned char RX_ADDRESS=0x01,0x02,0x03,0x04,0x00;unsigned char TX_ADDRESS=0x01,0x02,0x03,0x04,0x05;void spi_io_init(void)CE_ddr|=CE;CE_port&=CE;IRQ_ddr&=IRQ;IRQ_port|=IRQ;DDRB|=0xb0;DDRB&=0xbf;PORTB&=0x0f;void spi_init(void)spi_io_init();SS_port|=SS;SPCR=0x51;SPSR=0x00;unsigned char w_spi(unsigned char dat)unsigned char return_buf=0;SPSR&=0x7f;SPDR=dat;while(SPSR&0x80)=0);return_buf=SPDR;return(return_buf);unsigned char r_reg(unsigned char addr)unsigned char return_buf=0;SS_port&=SS;w_spi(addr);return_buf=w_spi(0);SS_port|=SS;return(return_buf);unsigned char w_reg(unsigned char addr,unsigned char dat)/return statusunsigned char return_buf=0;SS_port&=SS;return_buf=w_spi(addr+0x20);w_spi(dat);SS_port|=SS;return(return_buf);unsigned char r_buf(unsigned char *rx_buf,unsigned char num)/return statusunsigned char return_buf=0;unsigned char count=0;SS_port&=SS;return_buf=w_spi(0x61);for(count=0;countnum;count+)rx_bufcount=w_spi(0);SS_port|=SS;return(return_buf);unsigned char w_buf(unsigned char addr,unsigned char *tx_buf,unsigned char num)unsigned char return_buf=0;unsigned char count=0;SS_port&=SS;return_buf=w_spi(addr);for(count=0;countnum;count+)w_spi(tx_bufcount);SS_port|=SS;return(return_buf);void rx_mode(void)CE_port&=CE;w_buf(RX_ADDR_P0+0x20),RX_ADDRESS,5);/接收节点地址，长度为5w_reg(EN_AA,0x00);/使能接收通道0自动应答w_reg(EN_RXADDR,0x01);/使能接收通道0w_reg(RF_CH,0x40);/射频通道w_reg(RX_PW_P0,4);/有效数据宽度w_reg(RF_SETUP,0x07);/1M传输率，发射功率1dbmw_reg(CONFIG,0x0f);/16位CRC校验CE_port|=CE;void tx_mode(void)CE_port&=CE;w_buf(TX_ADDR+0x20),TX_ADDRESS,5);/发送地址，长度为5w_buf(RX_ADDR_P0+0x20),RX_ADDRESS,5);/接收节点地址w_reg(EN_AA,0x00);/使能接收通道0自动应答w_reg(EN_RXADDR,0x01);/使能接收通道0w_reg(SETUP_RETR,0x0a);/自动重发10次w_reg(RF_CH,0x40);/射频通道w_reg(RX_PW_P0,4);/有效数据宽度w_reg(RF_SETUP,0x07);/1M传输率，发射功率1dbmw_reg(CONFIG,0x0e);/16位CRC校验CE_port|=CE;void tx_data(unsigned char *dat,unsigned char num)CE_port&=CE;w_buf(TX_ADDR+0x20),TX_ADDRESS,5);/发送地址，长度为5w_buf(RX_ADDR_P0+0x20),RX_ADDRESS,5);/接收节点地址w_buf(0xa0,dat,num);w_reg(EN_AA,0x00);/使能接收通道0自动应答w_reg(EN_RXADDR,0x01);/使能接收通道0w_reg(SETUP_RETR,0x0a);/自动重发10次w_reg(RF_CH,0x40);/射频通道w_reg(RX_PW_P0,4);/有效数据宽度w_reg(RF_SETUP,0x07);/1M传输率，发射功率1dbmw_reg(CONFIG,0x0e);/16位CRC校验CE_port|=