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HI :-) as promised, im having problems with the wireless connection on the nordic nrf24e1, I am trying to send a packet and then if received, flash an LED. Can anyone see any problems with the below code. first is the transmitter code then i will reply with the receiver code:
#include <reg24e1.h>
struct RFConfig { unsigned char n; unsigned char buf[15]; };
typedef struct RFConfig RFConfig;
#define ADDR_INDEX 8 // Index to address bytes in RFConfig.buf #define ADDR_COUNT 4 // Number of address bytes
const RFConfig txconf = { 15, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x34, 0x56, 0x78, 0x83, 0x6c, 0x04 };
const RFConfig rxconf = { 15, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x87, 0x65, 0x43, 0x21, 0x83, 0x6c, 0x05 };
// LED is to be connected to this pin sbit LED_pin = P1^0;
// Function prototypes void DELAY_LOOP_Wait(const unsigned int); void DELAY_100us(volatile unsigned char n); unsigned char SPI_ReadWrite(unsigned char b); void TRANSMIT_Packet(unsigned char b); void TRANSMITTER(void); void LED_Flash(); void INIT(void);
/*..................................................................*/
void main(void) { INIT();
while(1) {
TRANSMITTER();
}
/*------------------------------------------------------------------*-
DELAY_LOOP_Wait()
-*------------------------------------------------------------------*/
void DELAY_LOOP_Wait(const unsigned int DELAY) { unsigned int x, y;
for (x = 0; x <= DELAY; x++) { for (y = 0; y <= 800; y++); } }
LED_FLASH()
void LED_Flash() { LED_pin = 0; DELAY_LOOP_Wait(1000); LED_pin = 1; DELAY_LOOP_Wait(1000); }
DELAY_100us()
void DELAY_100us(volatile unsigned char n) { unsigned char i; while(n--) for(i=0;i<35;i++) ; }
SPI_ReadWrite()
unsigned char SPI_ReadWrite(unsigned char b) { EXIF &= ~0x20; // Clear SPI interrupt SPI_DATA = b; // Move byte to send to SPI data register while((EXIF & 0x20) == 0x00) // Wait until SPI hs finished transmitting ; return SPI_DATA; }
TRANSMIT_Packet()
void TRANSMIT_Packet(unsigned char b) { unsigned char i; CE = 1; DELAY_100us(0); // Start with the address of the receiver: for(i=0;i<ADDR_COUNT;i++) SPI_ReadWrite(rxconf.buf[ADDR_INDEX+i]); SPI_ReadWrite(b); CE = 0; DELAY_100us(3); // Wait ~300us }
TRANSMITTER()
void TRANSMITTER(void) { unsigned char b; CS = 1; DELAY_100us(0); for(b=0;b<txconf.n;b++) { SPI_ReadWrite(txconf.buf[b]); } CS = 0; for(;;) { //b = ReadADC(); // Read ADC TRANSMIT_Packet(b); // Transmit data } }
void INIT(void) { PWR_UP = 1; // Turn on Radio DELAY_100us(30); // Wait > 3ms SPICLK = 0; // Max SPI clock (XTAL/8) SPI_CTRL = 0x02; // Connect internal SPI controller to Radio
Receiver.C
------------------------------------------------------------------
A Wireless test program for Nordic nrf24e1.
COPYRIGHT ---------
This code is copyright (c) 2007 by Leigh Griffiths.
// Function prototypes void DELAY_LOOP_Wait(const unsigned int); void DELAY_100us(volatile unsigned char n); unsigned char SPI_ReadWrite(unsigned char b); unsigned char RECEIVE_Packet(); void RECEIVER(void); void LED_Flash(); void INIT(void);
while(1) { TRANSMITTER(); RECEIVER();
void LED_Flash() { do { LED_pin = 0; DELAY_LOOP_Wait(1000); LED_pin = 1; DELAY_LOOP_Wait(1000); } while(1); }
unsigned char SPI_ReadWrite(unsigned char b) { EXIF &= ~0x20; // Clear SPI interrupt SPI_DATA = b; // Move byte to send to SPI data register while((EXIF & 0x20) == 0x00) // Wait until SPI hs finished transmitting ; return SPI_DATA; } =
RECEIVE_Packet()
unsigned char RECEIVE_Packet() { unsigned char b; CE = 1; while(DR1 == 0) ; b = SPI_ReadWrite(0); CE = 0; return b;
RECEIVER()
void RECEIVER(void) { unsigned char b, bo, err; CS = 1; DELAY_100us(0); for(b=0;b<rxconf.n;b++) { SPI_ReadWrite(rxconf.buf[b]); } CS = 0; bo = err = 0; for(;;) { b = RECEIVE_Packet(); LED_Flash(); } }
void INIT(void) { P1_DIR = 0; PWR_UP = 1; // Turn on Radio DELAY_100us(30); // Wait > 3ms SPICLK = 0; // Max SPI clock (XTAL/8) SPI_CTRL = 0x02; // Connect internal SPI controller to Radio