problem using nrf24l01 and sd card with arduino.

Using Arduino Networking, Protocols, and Devices
1

getting problem while using NRF24l01 and sd card module simultaneously. if vcc not given to sd card module then only nrf sensor works. but i want both at a time.

pin connection

nrf24l01:-

CSN = 8
CE = 7
MOSI = 11
MISO = 12
SCK = 13

SD Card:-

CS = 4
SCK = 13
MOSI = 11
MISO = 12

what change should i do ?? for use nrf and sd card simultaneously.

code

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <SD.h>
#include "SD.h"
#include "TMRpcm.h"
#include "SPI.h"

TMRpcm tmrpcm;

#define CE_PIN 7 // for nRF24
#define CSN_PIN 8 // for nRF24

#define csPin 10 // for SDCard
const byte address[6] = "00001";
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
int i;
#define sd_pin 4

void setup() {
Serial.begin(9600);
tmrpcm.speakerPin = 9;
radio.begin();
radio.openReadingPipe(0, address);
radio.setPALevel(RF24_PA_MIN);
radio.startListening();

}

void loop() {

if (radio.available()) {
int text[1] = { };
radio.read(&text, sizeof(text));

for (i=0;i<1;i++)
if ((text*)== 172){*

_ Serial.println(text*);_
aud ();
delay(1000);
_ }_
_ }}*_
void aud (){

* SD.begin(csPin);*
tmrpcm.setVolume(5);
tmrpcm.play("3.wav");
delay(1000);
}
hod.ino (838 Bytes)

2

rahulbirwadkar:
what change should i do ?? for use nrf and sd card simultaneously.

Use a SD card that allows usage of the SPI bus when it is not selected.
Some common SD moules don't tristate MISO.

3

I think the SD.begin(...) function needs to go in the setup. You're initializing it every time you call the aud() function and the SD card generally doesn't like that.