B4R Question ESP8266 PROGMEM error

Mostez · Jun 13, 2019

Hello,
I tried to upload this code example to ESP8266, but I got that error message below, is it about a missing file or is there another method for ESP to include arrays into progmem.

Thanks

B4R Version: 2.60
Parsing code. (0.00s)
Building folders structure. (0.00s)
Compiling code. (0.00s)
Building project (0.00s)
Compiling & deploying Ino project (Generic ESP8266 Module - COM10) Error
Loading configuration...
Initializing packages...
Preparing boards...
Verifying...
b4r_main.cpp:20:27: error: avr/pgmspace.h: No such file or directory
#include <avr/pgmspace.h>
^
compilation terminated.
exit status 1

Erel · Jun 13, 2019

PROGMEM is explained here: https://www.b4x.com/android/forum/threads/using-progmem-to-save-memory.71114/#content

This is an Arduino feature.

You can remove it quite easily.

1. Remove the #include line.
2. Remove the PROGMEM work.
3. Change the getData implementation:

B4X:

#if C
B4R::Object beo1;
B4R::Object* getdata(B4R::Object* o) {
   return beo1.wrapNumber(data[o->toLong()]);
}
#end if

Mostez · Jun 13, 2019

Thanks so much, worked OK. Sorry if it's a stupid question, data array stored in program memory or RAM?

Erel · Jun 13, 2019

Both. It is loaded into RAM when the program starts.

PROGMEM is useful when programming smaller Arduino boards that only have 2k or less RAM.

B4R Question ESP8266 PROGMEM error

Mostez

Well-Known Member

Erel

B4X founder

Mostez

Well-Known Member

Erel

B4X founder

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B4R Question ESP8266 PROGMEM error

Mostez

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