liang brain / nRF24L01P

fds

nRF24L01P.cpp@0:4caead137300, 2019-12-09 (annotated)

Committer:
Ucial
Date:
Mon Dec 09 03:07:01 2019 +0000
Revision:
0:4caead137300
Child:
1:c41959327807
nRF24L01 adapt to RangeFire

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Ucial 0:4caead137300 1 #include "nRF24L01P.h"
Ucial 0:4caead137300 2
Ucial 0:4caead137300 3 uint8_t NRF24L01_RXDATA[32];
Ucial 0:4caead137300 4 uint8_t NRF24L01_TXDATA[32];
Ucial 0:4caead137300 5 static uint8_t TX_ADDRESS[5]= {0x00,0x00,0x00,0x00,0x08};
Ucial 0:4caead137300 6 static uint8_t RX_ADDRESS[5]= {0x00,0x00,0x00,0x00,0x08};
Ucial 0:4caead137300 7 int Nrf_Erro=0;
Ucial 0:4caead137300 8 int ledtick;
Ucial 0:4caead137300 9
Ucial 0:4caead137300 10 uint8_t nRF24L01P::NRF_Read_Reg(uint8_t reg)
Ucial 0:4caead137300 11 {
Ucial 0:4caead137300 12 uint8_t reg_val;
Ucial 0:4caead137300 13 nCS_=0;
Ucial 0:4caead137300 14 spi_.write(reg);
Ucial 0:4caead137300 15 reg_val = spi_.write(0);
Ucial 0:4caead137300 16 nCS_=1;
Ucial 0:4caead137300 17 return reg_val;
Ucial 0:4caead137300 18
Ucial 0:4caead137300 19 }
Ucial 0:4caead137300 20 uint8_t nRF24L01P::NRF_Write_Reg(uint8_t reg, uint8_t value)
Ucial 0:4caead137300 21 {
Ucial 0:4caead137300 22 uint8_t status;
Ucial 0:4caead137300 23 nCS_=0;
Ucial 0:4caead137300 24 status = spi_.write(reg);
Ucial 0:4caead137300 25 spi_.write(value);
Ucial 0:4caead137300 26 nCS_=1;
Ucial 0:4caead137300 27 return status;
Ucial 0:4caead137300 28 }
Ucial 0:4caead137300 29 uint8_t nRF24L01P::NRF_Read_Buff(uint8_t reg, uint8_t *pBuf, uint8_t uchars)
Ucial 0:4caead137300 30 {
Ucial 0:4caead137300 31 uint8_t i;
Ucial 0:4caead137300 32 uint8_t status;
Ucial 0:4caead137300 33 nCS_=0;
Ucial 0:4caead137300 34 status = spi_.write(reg);
Ucial 0:4caead137300 35 for(i=0; i<uchars; i++)
Ucial 0:4caead137300 36 {
Ucial 0:4caead137300 37 pBuf[i] = spi_.write(0);
Ucial 0:4caead137300 38 }
Ucial 0:4caead137300 39 nCS_=1;
Ucial 0:4caead137300 40 return status;
Ucial 0:4caead137300 41 }
Ucial 0:4caead137300 42 uint8_t nRF24L01P::NRF_Write_Buf(uint8_t reg, uint8_t *pBuf, uint8_t uchars)
Ucial 0:4caead137300 43 {
Ucial 0:4caead137300 44 uint8_t i;
Ucial 0:4caead137300 45 uint8_t status;
Ucial 0:4caead137300 46 nCS_=0;
Ucial 0:4caead137300 47 status = spi_.write(reg);
Ucial 0:4caead137300 48 for(i=0; i<uchars; i++)
Ucial 0:4caead137300 49 {
Ucial 0:4caead137300 50 spi_.write(pBuf[i]);
Ucial 0:4caead137300 51 }
Ucial 0:4caead137300 52 nCS_=1;
Ucial 0:4caead137300 53 return status;
Ucial 0:4caead137300 54 }
Ucial 0:4caead137300 55 void nRF24L01P::NRF24L01_Set_TX(void)
Ucial 0:4caead137300 56 {
Ucial 0:4caead137300 57 ce_=0;
Ucial 0:4caead137300 58 nRF24L01P::NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0E);
Ucial 0:4caead137300 59 ce_=1;
Ucial 0:4caead137300 60 }
Ucial 0:4caead137300 61 void nRF24L01P::NRF24L01_Set_RX(void)
Ucial 0:4caead137300 62 {
Ucial 0:4caead137300 63 ce_=0;
Ucial 0:4caead137300 64 NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0F);//½ÓÊÕ
Ucial 0:4caead137300 65 ce_=1;
Ucial 0:4caead137300 66 }
Ucial 0:4caead137300 67 void nRF24L01P::NRF_Send_TX(uint8_t * tx_buf, uint8_t len)
Ucial 0:4caead137300 68 {
Ucial 0:4caead137300 69 nRF24L01P::NRF24L01_Set_TX();
Ucial 0:4caead137300 70 ce_=0;
Ucial 0:4caead137300 71 nRF24L01P::NRF_Write_Buf(WR_TX_PLOAD, tx_buf, len);
Ucial 0:4caead137300 72 ce_=1;
Ucial 0:4caead137300 73 wait_us(10);
Ucial 0:4caead137300 74 ledtick++;
Ucial 0:4caead137300 75 if(ledtick>=50)
Ucial 0:4caead137300 76 {
Ucial 0:4caead137300 77 check_led=!check_led;
Ucial 0:4caead137300 78 ledtick=0;
Ucial 0:4caead137300 79 }
Ucial 0:4caead137300 80 }
Ucial 0:4caead137300 81 nRF24L01P::nRF24L01P(PinName mosi,
Ucial 0:4caead137300 82 PinName miso,
Ucial 0:4caead137300 83 PinName sck,
Ucial 0:4caead137300 84 PinName csn,
Ucial 0:4caead137300 85 PinName ce,
Ucial 0:4caead137300 86 PinName irq):spi_(mosi,miso,sck),nCS_(csn),ce_(ce),nIRQ_(irq),check_led(PC_13)
Ucial 0:4caead137300 87 {
Ucial 0:4caead137300 88 nCS_ = 1;
Ucial 0:4caead137300 89
Ucial 0:4caead137300 90 spi_.frequency(9000000);
Ucial 0:4caead137300 91 spi_.format(8,0);
Ucial 0:4caead137300 92 wait_us(4); // Wait for Power-on reset
Ucial 0:4caead137300 93 }
Ucial 0:4caead137300 94
Ucial 0:4caead137300 95
Ucial 0:4caead137300 96 void nRF24L01P::NRF24L01_Check(void)
Ucial 0:4caead137300 97 {
Ucial 0:4caead137300 98 uint8_t buf[5];
Ucial 0:4caead137300 99 uint8_t i;
Ucial 0:4caead137300 100 NRF_Write_Buf(NRF_WRITE_REG+TX_ADDR,TX_ADDRESS,5);
Ucial 0:4caead137300 101 NRF_Read_Buff(TX_ADDR,buf,5);
Ucial 0:4caead137300 102 for(i=0;i<5;i++)
Ucial 0:4caead137300 103 {
Ucial 0:4caead137300 104 if(buf[i]!=TX_ADDRESS[i])
Ucial 0:4caead137300 105 break;
Ucial 0:4caead137300 106 }
Ucial 0:4caead137300 107
Ucial 0:4caead137300 108 if(i==5)
Ucial 0:4caead137300 109 {
Ucial 0:4caead137300 110 uint8_t ledt;
Ucial 0:4caead137300 111 for(ledt=0;ledt<5;ledt++)
Ucial 0:4caead137300 112 {
Ucial 0:4caead137300 113 check_led=0;
Ucial 0:4caead137300 114 wait_ms(100);
Ucial 0:4caead137300 115 check_led=1;
Ucial 0:4caead137300 116 wait_ms(100);
Ucial 0:4caead137300 117 }
Ucial 0:4caead137300 118 }
Ucial 0:4caead137300 119 }
Ucial 0:4caead137300 120 void nRF24L01P::NRF24L01_Init(uint8_t Chanal,uint8_t Mode)
Ucial 0:4caead137300 121 {
Ucial 0:4caead137300 122 ce_=0;
Ucial 0:4caead137300 123 ledtick=0;
Ucial 0:4caead137300 124 NRF_Write_Reg(FLUSH_TX,0xff);
Ucial 0:4caead137300 125 NRF_Write_Reg(FLUSH_RX,0xff);
Ucial 0:4caead137300 126 NRF_Write_Buf(NRF_WRITE_REG + TX_ADDR, TX_ADDRESS,5);
Ucial 0:4caead137300 127 NRF_Write_Buf(NRF_WRITE_REG + RX_ADDR_P0,RX_ADDRESS,5);
Ucial 0:4caead137300 128
Ucial 0:4caead137300 129 NRF_Write_Reg(NRF_WRITE_REG + EN_AA, 0x01);
Ucial 0:4caead137300 130 NRF_Write_Reg(NRF_WRITE_REG + EN_RXADDR, 0x01);
Ucial 0:4caead137300 131 NRF_Write_Reg(NRF_WRITE_REG + SETUP_RETR,0x1a);
Ucial 0:4caead137300 132 NRF_Write_Reg(NRF_WRITE_REG + RF_CH, Chanal);
Ucial 0:4caead137300 133 NRF_Write_Reg(NRF_WRITE_REG + RX_PW_P0, 32);
Ucial 0:4caead137300 134 NRF_Write_Reg(NRF_WRITE_REG + RF_SETUP, 0x0f);
Ucial 0:4caead137300 135
Ucial 0:4caead137300 136 if(Mode==TX)
Ucial 0:4caead137300 137 NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0E);
Ucial 0:4caead137300 138 else if(Mode==RX)
Ucial 0:4caead137300 139 NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0F);
Ucial 0:4caead137300 140
Ucial 0:4caead137300 141 ce_=1;
Ucial 0:4caead137300 142 }
Ucial 0:4caead137300 143 void nRF24L01P::NRF24L01_IRQ(void)
Ucial 0:4caead137300 144 {
Ucial 0:4caead137300 145 uint8_t status = NRF_Read_Reg(NRF_READ_REG + NRFRegSTATUS);
Ucial 0:4caead137300 146
Ucial 0:4caead137300 147 if(status & (1<<RX_DR))//½ÓÊÕÖжÏ
Ucial 0:4caead137300 148 {
Ucial 0:4caead137300 149 uint8_t rx_len = NRF_Read_Reg(R_RX_PL_WID);//ÊÕµ½Êý¾Ý³¤¶È
Ucial 0:4caead137300 150 if(rx_len==32)
Ucial 0:4caead137300 151 {
Ucial 0:4caead137300 152 NRF_Read_Buff(RD_RX_PLOAD,NRF24L01_RXDATA,rx_len);//¶ÁÈ¡½ÓÊÕFIFOÊý¾Ý
Ucial 0:4caead137300 153 Nrf_Erro = 0;
Ucial 0:4caead137300 154 }
Ucial 0:4caead137300 155 else
Ucial 0:4caead137300 156 {
Ucial 0:4caead137300 157 NRF_Write_Reg(FLUSH_RX,0xff);//Çå¿Õ½ÓÊÕ»º³åÇø
Ucial 0:4caead137300 158 }
Ucial 0:4caead137300 159 }
Ucial 0:4caead137300 160 if(status & (1<<MAX_RT))//´ïµ½×î¶à´ÎÖØ·¢ÖжÏ
Ucial 0:4caead137300 161 {
Ucial 0:4caead137300 162 if(status & (1<<TX_FULL))//TX FIFO Òç³ö
Ucial 0:4caead137300 163 {
Ucial 0:4caead137300 164 NRF_Write_Reg(FLUSH_TX,0xff);//Çå¿Õ·¢ËÍ»º³åÇø
Ucial 0:4caead137300 165 }
Ucial 0:4caead137300 166 }
Ucial 0:4caead137300 167 // if(status & (1<<TX_DS))//·¢ËÍÍê³É
Ucial 0:4caead137300 168 // {
Ucial 0:4caead137300 169 NRF24L01_Set_RX();//ÉèÖÃNrf2401Ϊ½ÓÊÕģʽ
Ucial 0:4caead137300 170 // }
Ucial 0:4caead137300 171 NRF_Write_Reg(NRF_WRITE_REG + NRFRegSTATUS, status);//Çå³ýÖжϱê־λ
Ucial 0:4caead137300 172 }