Diff: nRF24L01P.cpp

Revision:

0:4caead137300

Child:

1:c41959327807

diff -r 000000000000 -r 4caead137300 nRF24L01P.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF24L01P.cpp	Mon Dec 09 03:07:01 2019 +0000
@@ -0,0 +1,172 @@
+#include "nRF24L01P.h"
+
+uint8_t NRF24L01_RXDATA[32];
+uint8_t NRF24L01_TXDATA[32];
+static uint8_t TX_ADDRESS[5]= {0x00,0x00,0x00,0x00,0x08};
+static uint8_t RX_ADDRESS[5]= {0x00,0x00,0x00,0x00,0x08};
+int Nrf_Erro=0;
+int ledtick;
+
+uint8_t nRF24L01P::NRF_Read_Reg(uint8_t reg)
+{
+	uint8_t reg_val;
+	nCS_=0;
+	spi_.write(reg);
+	reg_val = spi_.write(0);
+	nCS_=1;
+    return 	reg_val;
+
+}	
+uint8_t nRF24L01P::NRF_Write_Reg(uint8_t reg, uint8_t value)
+{
+	uint8_t status;
+	nCS_=0;
+	status = spi_.write(reg);
+	spi_.write(value);
+	nCS_=1;
+	return 	status;
+}
+uint8_t nRF24L01P::NRF_Read_Buff(uint8_t reg, uint8_t *pBuf, uint8_t uchars)
+{
+	uint8_t i;
+	uint8_t status;
+	nCS_=0;
+	status = spi_.write(reg);
+	for(i=0; i<uchars; i++)
+	{
+		pBuf[i] = spi_.write(0);
+	}
+	nCS_=1;
+    return 	status;
+}
+uint8_t nRF24L01P::NRF_Write_Buf(uint8_t reg, uint8_t *pBuf, uint8_t uchars)
+{
+	uint8_t i;
+	uint8_t status;
+	nCS_=0;
+	status = spi_.write(reg);
+	for(i=0; i<uchars; i++)
+	{
+		spi_.write(pBuf[i]);
+	}
+	nCS_=1;
+    return 	status;	
+}
+void nRF24L01P::NRF24L01_Set_TX(void)
+{
+	ce_=0;
+	nRF24L01P::NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0E);
+	ce_=1;
+}
+void nRF24L01P::NRF24L01_Set_RX(void)
+{
+	ce_=0;
+	NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0F);//½ÓÊÕ
+	ce_=1;
+}
+void nRF24L01P::NRF_Send_TX(uint8_t * tx_buf, uint8_t len)
+{	
+	nRF24L01P::NRF24L01_Set_TX();
+	ce_=0;
+	nRF24L01P::NRF_Write_Buf(WR_TX_PLOAD, tx_buf, len);
+	ce_=1;
+	wait_us(10);
+	ledtick++;
+	if(ledtick>=50)
+	{
+		check_led=!check_led;
+		ledtick=0;
+	}
+}
+nRF24L01P::nRF24L01P(PinName mosi, 
+                     PinName miso, 
+                     PinName sck, 
+                     PinName csn,
+                     PinName ce,
+                     PinName irq):spi_(mosi,miso,sck),nCS_(csn),ce_(ce),nIRQ_(irq),check_led(PC_13)
+{
+    nCS_ = 1;
+    
+    spi_.frequency(9000000); 
+    spi_.format(8,0); 
+    wait_us(4);    // Wait for Power-on reset
+}
+
+
+void nRF24L01P::NRF24L01_Check(void)
+{
+	uint8_t buf[5]; 
+	uint8_t i; 
+	NRF_Write_Buf(NRF_WRITE_REG+TX_ADDR,TX_ADDRESS,5); 
+	NRF_Read_Buff(TX_ADDR,buf,5); 
+	for(i=0;i<5;i++) 
+	{ 
+		if(buf[i]!=TX_ADDRESS[i]) 
+			break; 
+	} 
+	
+	if(i==5)
+	{
+		uint8_t ledt;
+		for(ledt=0;ledt<5;ledt++)
+		{
+			check_led=0;
+			wait_ms(100);
+			check_led=1;
+			wait_ms(100);
+		}
+	}
+}
+void nRF24L01P::NRF24L01_Init(uint8_t Chanal,uint8_t Mode)
+{
+	ce_=0;
+	ledtick=0;
+	NRF_Write_Reg(FLUSH_TX,0xff);
+	NRF_Write_Reg(FLUSH_RX,0xff);
+	NRF_Write_Buf(NRF_WRITE_REG + TX_ADDR,   TX_ADDRESS,5);
+	NRF_Write_Buf(NRF_WRITE_REG + RX_ADDR_P0,RX_ADDRESS,5);	
+
+	NRF_Write_Reg(NRF_WRITE_REG + EN_AA,     0x01);
+	NRF_Write_Reg(NRF_WRITE_REG + EN_RXADDR, 0x01);
+	NRF_Write_Reg(NRF_WRITE_REG + SETUP_RETR,0x1a);	
+	NRF_Write_Reg(NRF_WRITE_REG + RF_CH,   Chanal);
+	NRF_Write_Reg(NRF_WRITE_REG + RX_PW_P0,    32);
+	NRF_Write_Reg(NRF_WRITE_REG + RF_SETUP,  0x0f);
+	
+	if(Mode==TX)
+		NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0E);
+	else if(Mode==RX)
+		NRF_Write_Reg(NRF_WRITE_REG + CONFIG,0x0F);
+	
+	ce_=1;
+}
+void nRF24L01P::NRF24L01_IRQ(void)
+{
+	uint8_t status = NRF_Read_Reg(NRF_READ_REG + NRFRegSTATUS);
+	
+	if(status & (1<<RX_DR))//½ÓÊÕÖжÏ
+	{
+		uint8_t rx_len = NRF_Read_Reg(R_RX_PL_WID);//ÊÕµ½Êý¾Ý³¤¶È
+		if(rx_len==32)
+		{
+			NRF_Read_Buff(RD_RX_PLOAD,NRF24L01_RXDATA,rx_len);//¶ÁÈ¡½ÓÊÕFIFOÊý¾Ý
+			Nrf_Erro = 0;
+		}
+		else
+		{
+			NRF_Write_Reg(FLUSH_RX,0xff);//Çå¿Õ½ÓÊÕ»º³åÇø
+		}
+	}
+	if(status & (1<<MAX_RT))//´ïµ½×î¶à´ÎÖØ·¢ÖжÏ
+	{
+		if(status & (1<<TX_FULL))//TX FIFO Òç³ö
+		{
+			NRF_Write_Reg(FLUSH_TX,0xff);//Çå¿Õ·¢ËÍ»º³åÇø
+		}
+	}
+//	if(status & (1<<TX_DS))//·¢ËÍÍê³É
+//	{
+		NRF24L01_Set_RX();//ÉèÖÃNrf2401Ϊ½ÓÊÕģʽ
+//	}
+	NRF_Write_Reg(NRF_WRITE_REG + NRFRegSTATUS, status);//Çå³ýÖжϱê־λ
+}