hello everyone.. i want to add push button function in my nRF program code. however it still did not work. i have tried everything i could but the LED on push button function still did not light up. the nRF program is okay.. i want to test when i press the button on TX (MCU) then the LED on the RX (MCU) lights up.. here i will attach my TX code and RX code.. please help.. any idea is much appreciated. thank you..
Tx code:
sbit Irq_pin at PORTA.B0; sfr; sbit Mosi_pin at LATC.B7; sfr; sbit Ce_pin at LATA.B4; sfr; sbit Sclk_pin at LATB.B6; sfr; sbit Csn_pin at LATA.B2; sfr; sbit Miso_pin at PORTB.B4; sfr;
sbit Irq_tris at TRISA.B0; sfr; sbit Mosi_tris at TRISC.B7; sfr; sbit Ce_tris at TRISA.B4; sfr; sbit Sclk_tris at TRISB.B6; sfr; sbit Csn_tris at TRISA.B2; sfr; sbit Miso_tris at TRISB.B4; sfr;
char Code_[32]; // addressing code (see datasheet for NRF24L01+) char Outgoing[25]; // outgoing packet char Incoming[25]; // incoming packet
void Init(){ ANSELA = 0; ANSELB = 0; ANSELC = 0; ANSELD = 0; LATD = 1; TRISD = 0;
INTCON = 0; // disable all interrupts
// address code Code_[10] = 0xAA; // choose bytes at your wish Code_[11] = 0xAA; Code_[12] = 0xAA; Code_[13] = 0xAA; Code_[14] = 0xAA;
NRF24L01P_RF_Channel = 20; // Radio frequency channel, in range 0..124 NRF24L01P_Init(5); // initialize NRF24L01+ NRF24L01P_Setup_Tx(Code_); }
void MakeMessage() { // form outgoing message char i; for (i = 0; i < 20; i++) { OutGoing[i] = i; }
}
char DoRF(){ char i; char result;
MakeMessage(); result = 0; // no receiver in range while (result != 255){ // keep trying until receiver gets the message memset(&incoming, 33, 20); // prepare incoming i = NRF24L01P_Send(OutGoing, Incoming); // Call receiver Delay_100ms(); LATD++; // indicate that Tx is in progress if (i == 0){ // Rx has received the message and returned the answer, which is in the "Incoming" array LATD = 0; // process Incoming array to extract the message from Rx result = 255; // All is OK, the receiver has got the message } else { // Rx did not receive the message } } return 1; }
void button() {
TRISB.RB0= 1; //Configure 1st bit of PORTD as input
TRISA.RA1 = 0; //Configure 1st bit of PORTB as output PORTA.RA1 = 0; //LED OFF ANSELA=0; INTCON2=0x07;
do { if(PORTB.RB0==0)
{ Delay_ms(10); if(PORTB.RB0==0)
{ PORTA.RA1=1; Delay_ms(1000); PORTA.RA1=0; }
}}while(1); }
void Main() {
Init(); while (1) // keep on transmitting DoRF(); button();
}
Rx code:
char InData[25]; // incoming data from RF char testRcv; char PayLoadBuff[25]; char Code_[32];
sbit Irq_pin at PORTA.B0; sfr; sbit Mosi_pin at LATC.B7; sfr; sbit Ce_pin at LATA.B4; sfr; sbit Sclk_pin at LATB.B6; sfr; sbit Csn_pin at LATA.B2; sfr; sbit Miso_pin at PORTB.B4; sfr;
sbit Irq_tris at TRISA.B0; sfr; sbit Mosi_tris at TRISC.B7; sfr; sbit Ce_tris at TRISA.B4; sfr; sbit Sclk_tris at TRISB.B6; sfr; sbit Csn_tris at TRISA.B2; sfr; sbit Miso_tris at TRISB.B4; sfr;
void interrupt(){ // in case you use interrupts, here is the moment when Rx has got the data from Tx //**************** Rx interrupt *************** if (INTCON.INT0IF == 1){
INTCON.INT0IF = 0; // clear interrupt flag on RB0 (IRQ pin) } //************************************************* }
void PreparePayload(){ char i; // prepare payload to be sent together with the ACK (see datasheet for NRF24L01+) for (i = 0; i < 20; i++) PayLoadBuff[i] = i; NRF24L01P_Write_Ack_Payload(PayLoadBuff, 0); // store payload to transmit buffer }
void Init(){ ANSELA = 0; // all pins digital ANSELB = 0; ANSELC = 0; ANSELD = 0;
LATD = 1; TRISD = 0; // we will use PORTD for indicators
INTCON = 0; // no interrupts
INTCON.INT0IE = 1; // allow interrupt on INTO (IRQ_PIN) INTCON2.INTEDG0 = 0; // falling edge on INT0 causes the interrupt
RBPU_bit = 0; // enable weak pull up on PORTB
memset(&InData, 0, 21);// clear the array
// address code, must be the same on Rx and Tx side Code_[10] = 0xAA; Code_[11] = 0xAA; Code_[12] = 0xAA; Code_[13] = 0xAA; Code_[14] = 0xAA;
INTCON.GIE = 1; // enable all interrupts, if you want them }
char DetectTx(){ char passcnt; char result;
passcnt = 0; result = 0; NRF24L01P_PowerUp(); // start the NRF chip NRF24L01P_Rf_Channel = 20; // set the radio channel, from 0..124 NRF24L01P_init(5); // initialize RF module with the highest power NRF24L01P_Setup_Receiver(Code_); // configure receiver memset(&InData, 0, 21); testRcv = NRF24L01P_Receive(InData); // procitaj ako je ista je stiglo na RF- brisi buffer PreparePayload(); NRF24L01P_ClearIRQ();
while (1){ passcnt = 0; // try 50 times before giving up while (passcnt < 50){ if (NRF24L01P_Has_Data()){ // is there any data received? testRcv = NRF24L01P_Receive(InData); // read the data and clear Rx buffer PreparePayload(); // prepare payload for the next session passcnt = 0; LATD.B7 = LATD.B7 ^ 1;; // show activity when data arrives result = 1; } passcnt++; Delay_100ms(); }
NRF24L01P_PowerDown(); // shut down NRF24L01+ Delay_100ms(); NRF24L01P_Rf_Channel = 20; // working channel NRF24L01P_Init(5); // Initialize RF module NRF24L01P_Setup_Receiver(Code_); // Reinitialize receiver memset(&InData, 0, 21); // Clear inoming buffer //LATD.B7 = PORTD.B7 ^ 1; PreparePayload(); // prepare payload for the next session if (testRcv){ // the data has been received result = 1; } } }
void button() {
TRISB.RB0= 1; //Configure 1st bit of PORTD as input
TRISA.RA1 = 0; //Configure 1st bit of PORTB as output PORTA.RA1 = 0; //LED OFF ANSELA=0; INTCON2=0x07;
do { if(PORTB.RB0==0)
{ Delay_ms(10); if(PORTB.RB0==0)
{ PORTA.RA1=1; Delay_ms(1000); PORTA.RA1=0; }
}}while(1); }
void main() { Init();
while (1) { if (DetectTx()) { // Tx is here, the data is received, it is stored in InData memset(&InData, 0, 21); // clear indata }
} button(); }
