My transmitter is a Nano, the receiver is a Tiny85. I use a Logic Analyzer to check if stuff is moving, I can clearly see data coming in at the receiver.
The receiver does not 'decode' the data, man.receiveComplete() is never True so in the end nothing happens.
I think the problem may be the difference in clock speeds, there are some things I have tried. The Nano is sending every second, in the logic analyzer I can see this come in every second so he is 'right on time'. But I am not so sure about the ATTiny85..
- ATTiny85
- Tiny Core
- 8MHz (burned bootloader 3x)
It is still to fast, counting to 3 is not working ok..
Bootloader burning log
/home/thijs/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/bin/avrdude -C/home/thijs/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/etc/avrdude.conf -v -v -pattiny85 -cstk500v1 -P/dev/ttyUSB0 -b19200 -e -Uefuse:w:0xFF:m -Uhfuse:w:0xD7:m -Ulfuse:w:0xE2:m
avrdude: Version 6.3, compiled on Dec 16 2016 at 12:32:01
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/home/thijs/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/etc/avrdude.conf"
User configuration file is "/home/thijs/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyUSB0
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATtiny85
Chip Erase delay : 400000 us
PAGEL : P00
BS2 : P00
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 12 4 0 no 512 4 0 4000 4500 0xff 0xff
flash 65 6 32 0 yes 8192 64 128 30000 30000 0xff 0xff
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
Programmer Type : STK500
Description : Atmel STK500 Version 1.x firmware
Hardware Version: 2
Firmware Version: 1.18
Topcard : Unknown
Vtarget : 0.0 V
Varef : 0.0 V
Oscillator : Off
SCK period : 0.1 us
avrdude: PAGEL and BS2 signals not defined in the configuration file for part ATtiny85, using dummy values
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.05s
avrdude: Device signature = 0x1e930b (probably t85)
avrdude: erasing chip
avrdude: PAGEL and BS2 signals not defined in the configuration file for part ATtiny85, using dummy values
avrdude: reading input file "0xFF"
avrdude: writing efuse (1 bytes):
Writing | ################################################## | 100% 0.02s
avrdude: 1 bytes of efuse written
avrdude: verifying efuse memory against 0xFF:
avrdude: load data efuse data from input file 0xFF:
avrdude: input file 0xFF contains 1 bytes
avrdude: reading on-chip efuse data:
Reading | ################################################## | 100% 0.02s
avrdude: verifying ...
avrdude: 1 bytes of efuse verified
avrdude: reading input file "0xD7"
avrdude: writing hfuse (1 bytes):
Writing | ################################################## | 100% 0.02s
avrdude: 1 bytes of hfuse written
avrdude: verifying hfuse memory against 0xD7:
avrdude: load data hfuse data from input file 0xD7:
avrdude: input file 0xD7 contains 1 bytes
avrdude: reading on-chip hfuse data:
Reading | ################################################## | 100% 0.02s
avrdude: verifying ...
avrdude: 1 bytes of hfuse verified
avrdude: reading input file "0xE2"
avrdude: writing lfuse (1 bytes):
Writing | ################################################## | 100% 0.02s
avrdude: 1 bytes of lfuse written
avrdude: verifying lfuse memory against 0xE2:
avrdude: load data lfuse data from input file 0xE2:
avrdude: input file 0xE2 contains 1 bytes
avrdude: reading on-chip lfuse data:
Reading | ################################################## | 100% 0.02s
avrdude: verifying ...
avrdude: 1 bytes of lfuse verified
avrdude done. Thank you.
/home/thijs/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/bin/avrdude -C/home/thijs/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/etc/avrdude.conf -v -v -pattiny85 -cstk500v1 -P/dev/ttyUSB0 -b19200
avrdude: Version 6.3, compiled on Dec 16 2016 at 12:32:01
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/home/thijs/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/etc/avrdude.conf"
User configuration file is "/home/thijs/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyUSB0
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATtiny85
Chip Erase delay : 400000 us
PAGEL : P00
BS2 : P00
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 12 4 0 no 512 4 0 4000 4500 0xff 0xff
flash 65 6 32 0 yes 8192 64 128 30000 30000 0xff 0xff
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
Programmer Type : STK500
Description : Atmel STK500 Version 1.x firmware
Hardware Version: 2
Firmware Version: 1.18
Topcard : Unknown
Vtarget : 0.0 V
Varef : 0.0 V
Oscillator : Off
SCK period : 0.1 us
avrdude: PAGEL and BS2 signals not defined in the configuration file for part ATtiny85, using dummy values
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.04s
avrdude: Device signature = 0x1e930b (probably t85)
avrdude done. Thank you.
high level
zoomed
I have tried to use the Analyzer options for Manchester encoding in Saleae Logic but I do not know how to configure it right..
Receiver Code
#include <Manchester.h>
#include <TinyWireM.h> // I2C Master lib for ATTinys which use USI
#include "LiquidCrystal_attiny.h"
LiquidCrystal_I2C lcd(0x27,16,2);
#define RX_PIN 1
uint8_t moo = 1;
#define BUFFER_SIZE 4
uint8_t buffer[BUFFER_SIZE];
int curs = 0;
void setup() {
// mySwitch.enableReceive(0); // Receiver on interrupt 0 => that is pin #2
delay(1000);
pinMode(4, OUTPUT);
lcd.init();
lcd.backlight();
lcd.home ();
lcd.setCursor (0, 0);
lcd.print("Start ");
man.setupReceive(RX_PIN, MAN_1200);
man.beginReceiveArray(BUFFER_SIZE, buffer);
count();
}
void loop() {
if (man.receiveComplete()) {
uint8_t receivedSize = 0;
//do something with the data in 'buffer' here before you start receiving to the same buffer again
receivedSize = buffer[0];
for(uint8_t i=1; i<receivedSize; i++)
Serial.write(buffer[i]);
// pushtolcd(".");
lcd.print(".");
Serial.println();
man.beginReceiveArray(BUFFER_SIZE, buffer);
moo = ++moo % 2;
}
}
void pushtolcd(String text) {
lcd.home ();
lcd.setCursor (0, curs);
curs++;
lcd.print(text);
delay(500);
}
void count() {
for (int i=0; i<3; i++) {
lcd.print(i);
delay(1000);
}
};
Sender code
#include <Manchester.h>
#define TX_PIN 5 //pin where your transmitter is connected
#define LED_PIN 13 //pin for blinking LED
uint8_t moo = 1; //last led status
uint8_t data[20] = {11, '1','2', '3', '4', '5', '6', '7', '8', '9','1','2','3','4','5','6','7','8','9'};
void setup()
{
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, moo);
man.workAround1MhzTinyCore(); //add this in order for transmitter to work with 1Mhz Attiny85/84
man.setupTransmit(TX_PIN, MAN_1200);
}
uint8_t datalength=2; //at least two data
void loop()
{
data[0] = datalength;
man.transmitArray(datalength, data);
moo = ++moo % 2;
digitalWrite(LED_PIN, moo);
delay(800);
datalength++;
if(datalength>18) datalength=2;
}
