#include "24l01.h"
#include "lcd.h"
#include "delay.h"
#include "spi.h"
const u8 TX_ADDRESS[TX_ADR_WIDTH]={0x34,0x43,0x10,0x10,0x01}; //·¢Ë͵ØÖ·
const u8 RX_ADDRESS[RX_ADR_WIDTH]={0x34,0x43,0x10,0x10,0x01}; //·¢Ë͵ØÖ·
//³õʼ»¯24L01µÄIO¿Ú
void NRF24L01_Init(void)
{
RCC->APB2ENR|=1<<2; //ʹÄÜPORTA¿ÚʱÖÓ
RCC->APB2ENR|=1<<4; //ʹÄÜPORTC¿ÚʱÖÓ
GPIOA->CRL&=0XFFF000FF;//PA4Êä³ö
GPIOA->CRL|=0X00033300;
GPIOA->ODR|=7<<2; //PA2.3.4 Êä³ö1
GPIOC->CRL&=0XFF00FFFF;//PC4Êä³ö PC5Êä³ö
GPIOC->CRL|=0X00830000;
GPIOC->ODR|=3<<4; //ÉÏÀ
SPIx_Init(); //³õʼ»¯SPI
NRF24L01_CE=0; //ʹÄÜ24L01
NRF24L01_CSN=1; //SPIƬѡȡÏû
}
//¼ì²â24L01ÊÇ·ñ´æÔÚ
//·µ»ØÖµ:0£¬³É¹¦;1£¬Ê§°Ü
u8 NRF24L01_Check(void)
{
u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5};
u8 i;
SPIx_SetSpeed(SPI_SPEED_8); //spiËÙ¶ÈΪ9Mhz£¨24L01µÄ×î´óSPIʱÖÓΪ10Mhz£©
NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,buf,5);//дÈë5¸ö×ֽڵĵØÖ·.
NRF24L01_Read_Buf(TX_ADDR,buf,5); //¶Á³öдÈëµÄµØÖ·
for(i=0;i<5;i++)if(buf[i]!=0XA5)break;
if(i!=5)return 1;//¼ì²â24L01´íÎó
return 0; //¼ì²âµ½24L01
}
//SPIд¼Ä´æÆ÷
//reg:Ö¸¶¨¼Ä´æÆ÷µØÖ·
//value:дÈëµÄÖµ
u8 NRF24L01_Write_Reg(u8 reg,u8 value)
{
u8 status;
NRF24L01_CSN=0; //ʹÄÜSPI´«Êä
status =SPIx_ReadWriteByte(reg);//·¢ËͼĴæÆ÷ºÅ
SPIx_ReadWriteByte(value); //дÈë¼Ä´æÆ÷µÄÖµ
NRF24L01_CSN=1; //½ûÖ¹SPI´«Êä
return(status); //·µ»Ø×´Ì¬Öµ
}
//¶ÁÈ¡SPI¼Ä´æÆ÷Öµ
//reg:Òª¶ÁµÄ¼Ä´æÆ÷
u8 NRF24L01_Read_Reg(u8 reg)
{
u8 reg_val;
NRF24L01_CSN = 0; //ʹÄÜSPI´«Êä
SPIx_ReadWriteByte(reg); //·¢ËͼĴæÆ÷ºÅ
reg_val=SPIx_ReadWriteByte(0XFF);//¶ÁÈ¡¼Ä´æÆ÷ÄÚÈÝ
NRF24L01_CSN = 1; //½ûÖ¹SPI´«Êä
return(reg_val); //·µ»Ø×´Ì¬Öµ
}
//ÔÚÖ¸¶¨Î»ÖöÁ³öÖ¸¶¨³¤¶ÈµÄÊý¾Ý
//reg:¼Ä´æÆ÷(λÖÃ)
//*pBuf:Êý¾ÝÖ¸Õë
//len:Êý¾Ý³¤¶È
//·µ»ØÖµ,´Ë´Î¶Áµ½µÄ״̬¼Ä´æÆ÷Öµ
u8 NRF24L01_Read_Buf(u8 reg,u8 *pBuf,u8 len)
{
u8 status,u8_ctr;
NRF24L01_CSN = 0; //ʹÄÜSPI´«Êä
status=SPIx_ReadWriteByte(reg);//·¢ËͼĴæÆ÷Öµ(λÖÃ),²¢¶Áȡ״ֵ̬
for(u8_ctr=0;u8_ctr<len;u8_ctr++)pBuf[u8_ctr]=SPIx_ReadWriteByte(0XFF);//¶Á³öÊý¾Ý
NRF24L01_CSN=1; //¹Ø±ÕSPI´«Êä
return status; //·µ»Ø¶Áµ½µÄ״ֵ̬
}
//ÔÚÖ¸¶¨Î»ÖÃдָ¶¨³¤¶ÈµÄÊý¾Ý
//reg:¼Ä´æÆ÷(λÖÃ)
//*pBuf:Êý¾ÝÖ¸Õë
//len:Êý¾Ý³¤¶È
//·µ»ØÖµ,´Ë´Î¶Áµ½µÄ״̬¼Ä´æÆ÷Öµ
u8 NRF24L01_Write_Buf(u8 reg, u8 *pBuf, u8 len)
{
u8 status,u8_ctr;
NRF24L01_CSN = 0; //ʹÄÜSPI´«Êä
status = SPIx_ReadWriteByte(reg);//·¢ËͼĴæÆ÷Öµ(λÖÃ),²¢¶Áȡ״ֵ̬
for(u8_ctr=0; u8_ctr<len; u8_ctr++)SPIx_ReadWriteByte(*pBuf++); //дÈëÊý¾Ý
NRF24L01_CSN = 1; //¹Ø±ÕSPI´«Êä
return status; //·µ»Ø¶Áµ½µÄ״ֵ̬
}
//Æô¶¯NRF24L01·¢ËÍÒ»´ÎÊý¾Ý
//txbuf:´ý·¢ËÍÊý¾ÝÊ×µØÖ·
//·µ»ØÖµ:·¢ËÍÍê³É×´¿ö
u8 NRF24L01_TxPacket(u8 *txbuf)
{
u8 sta;
SPIx_SetSpeed(SPI_SPEED_8);//spiËÙ¶ÈΪ9Mhz£¨24L01µÄ×î´óSPIʱÖÓΪ10Mhz£©
NRF24L01_CE=0;
NRF24L01_Write_Buf(WR_TX_PLOAD,txbuf,TX_PLOAD_WIDTH);//дÊý¾Ýµ½TX BUF 32¸ö×Ö½Ú
NRF24L01_CE=1;//Æô¶¯·¢ËÍ
while(NRF24L01_IRQ!=0);//µÈ´ý·¢ËÍÍê³É
sta=NRF24L01_Read_Reg(STATUS); //¶Áȡ״̬¼Ä´æÆ÷µÄÖµ
NRF24L01_Write_Reg(WRITE_REG+STATUS,sta); //Çå³ýTX_DS»òMAX_RTÖжϱêÖ¾
if(sta&MAX_TX)//´ïµ½×î´óÖØ·¢´ÎÊý
{
NRF24L01_Write_Reg(FLUSH_TX,0xff);//Çå³ýTX FIFO¼Ä´æÆ÷
return MAX_TX;
}
if(sta&TX_OK)//·¢ËÍÍê³É
{
return TX_OK;
}
return 0xff;//ÆäËûÔÒò·¢ËÍʧ°Ü
}
//Æô¶¯NRF24L01·¢ËÍÒ»´ÎÊý¾Ý
//txbuf:´ý·¢ËÍÊý¾ÝÊ×µØÖ·
//·µ»ØÖµ:0£¬½ÓÊÕÍê³É£»ÆäËû£¬´íÎó´úÂë
u8 NRF24L01_RxPacket(u8 *rxbuf)
{
u8 sta;
SPIx_SetSpeed(SPI_SPEED_8); //spiËÙ¶ÈΪ9Mhz£¨24L01µÄ×î´óSPIʱÖÓΪ10Mhz£©
sta=NRF24L01_Read_Reg(STATUS); //¶Áȡ״̬¼Ä´æÆ÷µÄÖµ
NRF24L01_Write_Reg(WRITE_REG+STATUS,sta); //Çå³ýTX_DS»òMAX_RTÖжϱêÖ¾
if(sta&RX_OK)//½ÓÊÕµ½Êý¾Ý
{
NRF24L01_Read_Buf(RD_RX_PLOAD,rxbuf,RX_PLOAD_WIDTH);//¶ÁÈ¡Êý¾Ý
NRF24L01_Write_Reg(FLUSH_RX,0xff);//Çå³ýRX FIFO¼Ä´æÆ÷
return 0;
}
return 1;//ûÊÕµ½ÈκÎÊý¾Ý
}
//¸Ãº¯Êý³õʼ»¯NRF24L01µ½RXģʽ
//ÉèÖÃRXµØÖ·,дRXÊý¾Ý¿í¶È,Ñ¡ÔñRFƵµÀ,²¨ÌØÂʺÍLNA HCURR
//µ±CE±ä¸ßºó,¼´½øÈëRXģʽ,²¢¿ÉÒÔ½ÓÊÕÊý¾ÝÁË
void RX_Mode(void)
{
NRF24L01_CE=0;
NRF24L01_Write_Buf(WRITE_REG+RX_ADDR_P0,(u8*)RX_ADDRESS,RX_ADR_WIDTH);//дRX½ÚµãµØÖ·
NRF24L01_Write_Reg(WRITE_REG+EN_AA,0x01); //ʹÄÜͨµÀ0µÄ×Ô¶¯Ó¦´ð
NRF24L01_Write_Reg(WRITE_REG+EN_RXADDR,0x01);//ʹÄÜͨµÀ0µÄ½ÓÊÕµØÖ·
NRF24L01_Write_Reg(WRITE_REG+RF_CH,40); //ÉèÖÃRFͨÐÅÆµÂÊ
NRF24L01_Write_Reg(WRITE_REG+RX_PW_P0,RX_PLOAD_WIDTH);//Ñ¡ÔñͨµÀ0µÄÓÐЧÊý¾Ý¿í¶È
NRF24L01_Write_Reg(WRITE_REG+RF_SETUP,0x0f);//ÉèÖÃTX·¢Éä²ÎÊý,0dbÔöÒæ,2Mbps,µÍÔëÉùÔöÒæ¿ªÆô
NRF24L01_Write_Reg(WRITE_REG+CONFIG, 0x0f);//ÅäÖûù±¾¹¤×÷ģʽµÄ²ÎÊý;PWR_UP,EN_CRC,16BIT_CRC,½ÓÊÕģʽ
NRF24L01_CE = 1; //CEΪ¸ß,½øÈë½ÓÊÕģʽ
}
//¸Ãº¯Êý³õʼ»¯NRF24L01µ½TXģʽ
//ÉèÖÃTXµØÖ·,дTXÊý¾Ý¿í¶È,ÉèÖÃRX×Ô¶¯Ó¦´ðµÄµØÖ·,Ìî³äTX·¢ËÍÊý¾Ý,Ñ¡ÔñRFƵµÀ,²¨ÌØÂʺÍLNA HCURR
//PWR_UP,CRCʹÄÜ
//µ±CE±ä¸ßºó,¼´½øÈëRXģʽ,²¢¿ÉÒÔ½ÓÊÕÊý¾ÝÁË
//CEΪ¸ß´óÓÚ10us,ÔòÆô¶¯·¢ËÍ.
void TX_Mode(void)
{
NRF24L01_CE=0;
NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,(u8*)TX_ADDRESS,TX_ADR_WIDTH);//дTX½ÚµãµØÖ·
NRF24L01_Write_Buf(WRITE_REG+RX_ADDR_P0,(u8*)RX_ADDRESS,RX_ADR_WIDTH); //ÉèÖÃTX½ÚµãµØÖ·,Ö÷ҪΪÁËʹÄÜACK
NRF24L01_Write_Reg(WRITE_REG+EN_AA,0x01); //ʹÄÜͨµÀ0µÄ×Ô¶¯Ó¦´ð
NRF24L01_Write_Reg(WRITE_REG+EN_RXADDR,0x01); //ʹÄÜͨµÀ0µÄ½ÓÊÕµØÖ·
NRF24L01_Write_Reg(WRITE_REG+SETUP_RETR,0x1a);//ÉèÖÃ×Ô¶¯ÖØ·¢¼ä¸ôʱ¼ä:500us + 86us;×î´ó×Ô¶¯ÖØ·¢´ÎÊý:10´Î
NRF24L01_Write_Reg(WRITE_REG+RF_CH,40); //ÉèÖÃRFͨµÀΪ40
NRF24L01_Write_Reg(WRITE_REG+RF_SETUP,0x0f); //ÉèÖÃTX·¢Éä²ÎÊý,0dbÔöÒæ,2Mbps,µÍÔëÉùÔöÒæ¿ªÆô
NRF24L01_Write_Reg(WRITE_REG+CONFIG,0x0e); //ÅäÖûù±¾¹¤×÷ģʽµÄ²ÎÊý;PWR_UP,EN_CRC,16BIT_CRC,½ÓÊÕģʽ,¿ªÆôËùÓÐÖжÏ
NRF24L01_CE=1;//CEΪ¸ß,10usºóÆô¶¯·¢ËÍ
}
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