attiny 85, any pointers?/

[winner10920]

Srry I meant to post it last post, my phone doesn't seem to want to post it right now, ill tyr again tomorrow on an actual computer

[skootles]

Thanks, can't wait to get this working.

[winner10920]

srry for the delay

[skootles]

No problem. Could I bother you for the receiver code as well?

[winner10920]

heres some code that recieves a message and i think replies as ewell as readoff to an lcd, but it is for an uno and doesnt use the attiny85 spi

[Shrugs]

I'm not quite sure what I'm not doing correctly. Hopefully you can help me out. My pin connections:

ATtiny84        -> Nrf24L01+
MISO (PA6) -> MISO
MOSI (PA5) -> MOSI
SCK   (PA4) -> SCK
CSN   (PA3) -> CSN
CE     (PA2) -> CE

The code uploads to the ATtiny84 perfectly well, and seems to be working.

When I run the uno code you provided, though, it fails to detect any data. Here are the connections:

UNO            -> Nrf24L01+
D9               -> CE
D10             -> CSN
D11 (MOSI) -> MOSI
D12 (MISO) -> MISO
D13 (SCK)   -> SCK  

And here is the stripped down code:

Code: [Select]


ATTinyMirf.ino

#include <avr/io.h>
#include <inttypes.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <SPI85.h>
#include <Mirf85.h>
#include <nRF24L0185.h>
#include <MirfHardwareSpiDriver85.h>
#include "SoftwareSerial.h"



byte data[32] = {
 'T','T','W','I','R','E','L','E','S','S','Q','Q','Q','Q','Q','Q',
 'Q','Q','R','J','F','E','D','O','R','Q','Q','Q','Q','Q','Q','Q'
};

SoftwareSerial mySerial(9,10);

void setup(){
 mySerial.begin(9600);
 mySerial.write("ATTINY - Setup\n");
 
 // pinMode(3,0);
 pinMode(0, OUTPUT);
 pinMode(2, OUTPUT);
 pinMode(3, OUTPUT);
 // digitalWrite(3,1);
 delay(1000);
 
 Mirf.cePin = 2; //attiny
 Mirf.csnPin = 3; //attiny
 Mirf.spi = &MirfHardwareSpi;
 Mirf.init();

 Mirf.setRADDR((byte *)"sendr");
 Mirf.payload = 32;
 Mirf.channel = 8;
 Mirf.setTADDR((byte *)"reply");
 Mirf.send(data);
delay(3000);
mySerial.write("ATTINY - End Setup\n");

}

void loop(){

 delay(1000);
 digitalWrite(0, HIGH);
 mySerial.write("ATTINY - Sending... \n");

 Mirf.send(data);
 digitalWrite(0, LOW);
 delay(100);

 
}



and for the UNO:

Code: [Select]


UnoMIRF.ino

//mirf recieve and replay
/*
PIN ||arduino || mirf
GND ||  GND   ||  1
VCC ||  5V    ||  2
CE  ||     9  ||  3
CSN ||     10 ||  4
SCK ||     13 ||  5
MOSI||     11 ||  6
MISO||     12 ||  7
IRQ ||  NA    ||  8
*/
#include <SPI.h>
#include <Mirf.h>
#include <nRF24L01.h>
#include <MirfHardwareSpiDriver.h>
byte data[32]; //size of payload
void setup(){
 Serial.begin(9600);
 //begin nrf24ll01
 Mirf.cePin = 9; //uno
 Mirf.csnPin = 10; //uno
 Mirf.spi = &MirfHardwareSpi;
 Mirf.init();

 Mirf.setRADDR((byte *)"reply");
 Mirf.setTADDR((byte *)"sendr");
 Mirf.payload = 32;
 Mirf.channel = 8;
 Mirf.config();
 Serial.println("Setup finished");
}
void loop(){
 // Serial.print(".");

 if(Mirf.dataReady()){
   Mirf.getData(data);


   delay(50);
   for (int i = 0; i < 32; ++i)
   {
     Serial.print(data[i]);
     Serial.print(",");
   }
   Serial.println();
 }

}




I'm pretty sure the chips themselves work; the RF24 library was able to get the status register of the transceivers, so it must be a problem with the ATtiny and/or Uno code

Thank you again

[skootles]

I'm also having an issue getting this working on an ATtiny84. I've had success with the ATtiny85 however. Perhaps there's an error in the library?

Edit: Oh, and of course thanks winner10920 for your code.

[Shrugs]

It works well on the 85? I think I'll go ahead and get some of those, then. I assume I'll have to change the pin assignments in the library? From PORTA to PORTB, that is.

[winner10920]

In the library I included a define for the 84, perhaps depending on your method of enabling attiny use on arduino because I based it on the third party source that I used, I believe there are 2-3 different ones, perhaps that's the fault, ill try on an 84 when I get the chance, tho I think someone else said it worked on an 84

[Shrugs]

Oh ya, I forgot to specify that I had to manually comment out the ATTiny "if defined" part in SPI85 because it wasn't recognizing the core as an __AVR_ATtinyX4__. That's probably the problem. So would I use a different ATTiny core or what?

Yea, somebody above got it working on an 84.

[winner10920]

Just change the core name to whichever yours is, youll find the name within the attiny core itself, I found it I think by pin definitions, then it will automatically recognize it

[Shrugs]

Right, right. Wait, since I manually commented it out and forced the pin definitions to be for the 84, wouldn't it work already?
I changed

Code: [Select]


#if defined( __AVR_ATtinyX4__ )
const static uint8_t SS   = PA7;
const static uint8_t MOSI = PA5;
const static uint8_t MISO = PA6;
const static uint8_t SCK  = PA4;
#endif

To:

Code: [Select]


//#if defined( __AVR_ATtinyX4__ )
const static uint8_t SS   = PA7;
const static uint8_t MOSI = PA5;
const static uint8_t MISO = PA6;
const static uint8_t SCK  = PA4;
//#endif

So the pins are definitely correct, I think.

[winner10920]

Does anything change when you force the definitions?

[Shrugs]

It stops giving me the "SS/MOSI/MISO/SCK is undefined in this context" or whatever messages and compiles perfectly. I had done that previously, so now I don't think that it's related to my problems now. Thanks for helping, by the way.

[winner10920]

Np, let me know if u figure it out, feels good to know something I made works for other people too lol