https://github.com/djnamaste/FastLED-Adafruit-Supernova-esp8266 Above is my attempt to get the supernova code working on ESP8266.

Chris_Stock · February 25, 2018, 11:13pm

Above is my attempt to get the supernova code working on ESP8266. The code uploads and nothing happens. When uploaded to Teensy 3.2 the code works properly. Any ideas?

Chris_Stock · February 26, 2018, 1:45pm

http://arduino-esp8266.readthedocs.io/en/latest/PROGMEM.html

Pretty sure this is why it isn’t working but need to try changing the code, not sure yet what to do.

Erin_St_Blaine · February 26, 2018, 4:16pm

I want you to succeed… been wanting this for a while, but I’m way out of my depth with this code!

Chris_Stock · February 26, 2018, 6:38pm

Im fairly certain the PROPGMEM part is the issue preventing it from working. It has to be initialized differently.

http://arduino-esp8266.readthedocs.io/en/latest/PROGMEM.html describes it. I am not sure how to modify the code though.

I was able to add a function to the web interface that would start the POV part but when I would select it, the board would stop working and had to be reset. It is getting closer though.

Sam_Guyer · February 26, 2018, 8:12pm

How does the IR interrupt work? That seems like a potential problem.

Frederic_Delhoume · February 26, 2018, 8:39pm

Declaring arrays as PROGMEM needs some special functions to access them, you cannot use pointers as you do I think. For example lineTable.

http://arduino-esp8266.readthedocs.io/en/latest/PROGMEM.html#how-do-i-declare-some-data-in-progmem-and-retrieve-one-byte-from-it

Frederic_Delhoume · February 26, 2018, 8:45pm

Paul says that on teensy PROGMEM does nothing, so your code works as-is. However on an ESP8266 it changes the way the data is allocated. https://forum.pjrc.com/threads/23526-PROGMEM-use-on-Teensy-3-0

Frederic_Delhoume · February 26, 2018, 8:52pm

You may try to
#define PROGMEM
in the beginning of you ino file, for example just before the #include “graphics.h” line, that will use normal memory, and might work if all your data can fit.

Sam_Guyer · February 26, 2018, 9:23pm

Looking over the IR code from PJRC, it looks like that is the part that is not completely compatible with the ESP8266. Here is what the GitHub project says:

ESP8266 is supported in a fork based on an old codebase that isn’t as recent, but it works reasonably well given that perfectly timed sub millisecond interrupts are different on that chip. See https://github.com/markszabo/IRremoteESP8266

Sam_Guyer · February 26, 2018, 9:24pm

It looks like they have added ESP32 support, though.

Chris_Stock · February 26, 2018, 9:25pm

I don’t know if it would fit. I am putting hundreds of patterns in the graphics.h file. So using the instructions to point to the progmem it would be adding hundreds of pointers, unless maybe I can add something in setup to point to all of them?

Chris_Stock · February 26, 2018, 9:27pm

@Sam_Guyer I haven’t tried the ir input using the current example I uploaded. I changed the ir library to the 8266ir library so it will compile. It doesn’t like the ir library that is included in the original adafruit sketch. I’m planning to maybe cut out the ir code and merge the code with the web control fastled.

Frederic_Delhoume · February 27, 2018, 8:17am

I tried
#define PROGMEM
#include “graphics.h” // Graphics data is contained in this header file.

and it fits
Sketch uses 262427 bytes (25%) of program storage space. Maximum is 1044464 bytes.
Global variables use 45760 bytes (55%) of dynamic memory, leaving 36160 bytes for local variables. Maximum is 81920 bytes.

Frederic_Delhoume · February 27, 2018, 8:51am

I would also add
#define memcpy_P memcpy

so that everything is in standard memory

Chris_Stock · February 27, 2018, 8:03pm

I tried those suggestions and it didnt work. I did find a bike pov code on esp8266 that modifies the original adafruit pov code to work on esp.

github.com

NBAKH/bikePOVdisplay/blob/master/pov_bike/pov_bike.ino

#include "nasty.h"

#include <Adafruit_DotStar.h>
#include <SPI.h>
#include <Ticker.h>

Ticker draw;

#define DATAPIN MOSI
#define CLOCKPIN SCK

Adafruit_DotStar strip = Adafruit_DotStar(NUM_LEDS+1, DATAPIN, CLOCKPIN);

//global stuff i've stolen
uint8_t  imageType,          // Image type: PALETTE[1,4,8] or TRUECOLOR
         imagePalette,       // -> palette data in PROGMEM
         imagePixels,        // -> pixel data in PROGMEM
         imageLines,         // Number of lines in active image2
         imageLine;          // Current line number in image

This file has been truncated. show original

Frederic_Delhoume · February 27, 2018, 8:22pm

Are you able to display a simple pattern on the strip connected to the ESP8266 ? With some basic FastLED code ? If tricking PROGMEM to do nothing does not work, I am afraid you will have to debug using Serial…

Chris_Stock · February 27, 2018, 8:51pm

I am able to get lights functioning using basic fastled code. Pin definitions are correct. I did find imageinit() being in void setup was causing the board to restart repeatedly. Still trying to convert things over after reading through this. https://github.com/esp8266/Arduino/blob/master/doc/PROGMEM.rst

Chris_Stock · March 28, 2018, 4:32am

It turned out to be memory issues for sure. I haven’t tried working the IR code into the sketch yet, but after changing the sketch to include pgm_read_byte it works on esp8266. See my new post on my github. I am still trying to figure out how to modify the code to store patterns in flash rather than in working memory.