ESP8266 Community Forum

- Mon Jun 01, 2015 5:26 pm #19162 Few days ago, I'm trying to write two big arrays of data into PROGMEM and I have tried all possible methods. All compiled files show a memory Flash usage up to 61%, but the two data stored don't work at same time. The big one works, the font one doesn't work.
I think that the counter of Arduino underrates the ammount of free memory on Flash and when I'm reading font data, it's damaged because writed further than useful memory. So it brings to program crash.
It isn't in spec sheet the amount of memory available, only some reverse engineering by dedicated hackers indicates its amount.

Do you have much more info about it?

I use a version of ESP8288 purchased on ebay, version 07, like this below:


The data instead are this two reported (the first data is truncated), I'm posting all the header code:

Code: Select all#ifndef FONT5X7_H
#define FONT5X7_H

#ifdef __cplusplus
extern "C" {
#endif
#include "pgmspace.h"
#ifdef __cplusplus
}
#endif

#define PROGMEM
 
/* Standard ASCII 5x7 font */

static const uint32_t image[] PROGMEM = { //20480
    0x1d140b1d, 0x140b1f15, 0x0b22180b, 0x24190c25, 0x190d261b, 0x0e291d10, 0x2c1f112d, 0x20123023, 0x14332616, 0x36281837, 0x2a1a3a2c, 0x1b3b2d1d, 0x3d2e1d3d, 0x2f1d3a2e, 0x1c392c1c, 0x36291a33, 0x27182f23, 0x142d2113, 0x2b201228, 0x1d10281c, 0x0f281c0f, 0x291c0f29, 0x1c10291b, 0x0f271a0e, 0x26190d24, 0x170c2316, 0x0b22150a, 0x21130921, 0x150a2215, 0x0b22170c, 0x23190e24, 0x1a10241b, 0x11241b10, 0x241b1023, 0x1b10231b, 0x1021190f, 0x1f170e1f, 0x170e2219, 0x0f231a10, 0x231b1023, 0x1a102219, 0x0f21170e, 0x1f160d1d, 0x160c1c15, 0x0b1b150a, 0x1b130a1b, 0x130a1e15, 0x0b21160c, 0x22170c21, 0x170c2015, 0x0a1d1308, 0x19110713, 0x0b040b06, 0x01090500, 0x08040009, 0x04000f08, 0x03150c04, 0x1a0e031d, 0x0f032615, 0x06301e0d, 0x2f1e0f2b, 0x1a0e2818, 0x0c28180d, 0x2b1b0f2c, 0x1e112e20, 0x12302214, 0x3123152e, 0x2013291c, 0x1026190f, 0x24180d26, 0x1a0f2a1e, 0x112d2113, 0x2a1e1222, 0x190d1811, 0x09130e06, 0x130f0715, 0x10081410, 0x0818120a, 0x1c150b1f, 0x150c2216, 0x0d26180f, 0x2b1c112e, 0x1e122d1f, 0x122d1e11, 0x2c1e112a, 0x1d10281b, 0x10251a0f, 0x271c0f27, 0x1c10261c, 0x102a1e12, ...
};

static const uint8_t font[] PROGMEM = {
   0x00, 0x00, 0x00, 0x00, 0x00,   
   0x3E, 0x5B, 0x4F, 0x5B, 0x3E,    
   0x3E, 0x6B, 0x4F, 0x6B, 0x3E,    
   0x1C, 0x3E, 0x7C, 0x3E, 0x1C,
   0x18, 0x3C, 0x7E, 0x3C, 0x18,
   0x1C, 0x57, 0x7D, 0x57, 0x1C,
   0x1C, 0x5E, 0x7F, 0x5E, 0x1C,
   0x00, 0x18, 0x3C, 0x18, 0x00,
   0xFF, 0xE7, 0xC3, 0xE7, 0xFF,
   0x00, 0x18, 0x24, 0x18, 0x00,
   0xFF, 0xE7, 0xDB, 0xE7, 0xFF,
   0x30, 0x48, 0x3A, 0x06, 0x0E,
   0x26, 0x29, 0x79, 0x29, 0x26,
   0x40, 0x7F, 0x05, 0x05, 0x07,
   0x40, 0x7F, 0x05, 0x25, 0x3F,
   0x5A, 0x3C, 0xE7, 0x3C, 0x5A,
   0x7F, 0x3E, 0x1C, 0x1C, 0x08,
   0x08, 0x1C, 0x1C, 0x3E, 0x7F,
   0x14, 0x22, 0x7F, 0x22, 0x14,
   0x5F, 0x5F, 0x00, 0x5F, 0x5F,
   0x06, 0x09, 0x7F, 0x01, 0x7F,
   0x00, 0x66, 0x89, 0x95, 0x6A,
   0x60, 0x60, 0x60, 0x60, 0x60,
   0x94, 0xA2, 0xFF, 0xA2, 0x94,
   0x08, 0x04, 0x7E, 0x04, 0x08,
   0x10, 0x20, 0x7E, 0x20, 0x10,
   0x08, 0x08, 0x2A, 0x1C, 0x08,
   0x08, 0x1C, 0x2A, 0x08, 0x08,
   0x1E, 0x10, 0x10, 0x10, 0x10,
   0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
   0x30, 0x38, 0x3E, 0x38, 0x30,
   0x06, 0x0E, 0x3E, 0x0E, 0x06,
   0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x5F, 0x00, 0x00,
   0x00, 0x07, 0x00, 0x07, 0x00,
   0x14, 0x7F, 0x14, 0x7F, 0x14,
   0x24, 0x2A, 0x7F, 0x2A, 0x12,
   0x23, 0x13, 0x08, 0x64, 0x62,
   0x36, 0x49, 0x56, 0x20, 0x50,
   0x00, 0x08, 0x07, 0x03, 0x00,
   0x00, 0x1C, 0x22, 0x41, 0x00,
   0x00, 0x41, 0x22, 0x1C, 0x00,
   0x2A, 0x1C, 0x7F, 0x1C, 0x2A,
   0x08, 0x08, 0x3E, 0x08, 0x08,
   0x00, 0x80, 0x70, 0x30, 0x00,
   0x08, 0x08, 0x08, 0x08, 0x08,
   0x00, 0x00, 0x60, 0x60, 0x00,
   0x20, 0x10, 0x08, 0x04, 0x02,
   0x3E, 0x51, 0x49, 0x45, 0x3E,
   0x00, 0x42, 0x7F, 0x40, 0x00,
   0x72, 0x49, 0x49, 0x49, 0x46,
   0x21, 0x41, 0x49, 0x4D, 0x33,
   0x18, 0x14, 0x12, 0x7F, 0x10,
   0x27, 0x45, 0x45, 0x45, 0x39,
   0x3C, 0x4A, 0x49, 0x49, 0x31,
   0x41, 0x21, 0x11, 0x09, 0x07,
   0x36, 0x49, 0x49, 0x49, 0x36,
   0x46, 0x49, 0x49, 0x29, 0x1E,
   0x00, 0x00, 0x14, 0x00, 0x00,
   0x00, 0x40, 0x34, 0x00, 0x00,
   0x00, 0x08, 0x14, 0x22, 0x41,
   0x14, 0x14, 0x14, 0x14, 0x14,
   0x00, 0x41, 0x22, 0x14, 0x08,
   0x02, 0x01, 0x59, 0x09, 0x06,
   0x3E, 0x41, 0x5D, 0x59, 0x4E,
   0x7C, 0x12, 0x11, 0x12, 0x7C,
   0x7F, 0x49, 0x49, 0x49, 0x36,
   0x3E, 0x41, 0x41, 0x41, 0x22,
   0x7F, 0x41, 0x41, 0x41, 0x3E,
   0x7F, 0x49, 0x49, 0x49, 0x41,
   0x7F, 0x09, 0x09, 0x09, 0x01,
   0x3E, 0x41, 0x41, 0x51, 0x73,
   0x7F, 0x08, 0x08, 0x08, 0x7F,
   0x00, 0x41, 0x7F, 0x41, 0x00,
   0x20, 0x40, 0x41, 0x3F, 0x01,
   0x7F, 0x08, 0x14, 0x22, 0x41,
   0x7F, 0x40, 0x40, 0x40, 0x40,
   0x7F, 0x02, 0x1C, 0x02, 0x7F,
   0x7F, 0x04, 0x08, 0x10, 0x7F,
   0x3E, 0x41, 0x41, 0x41, 0x3E,
   0x7F, 0x09, 0x09, 0x09, 0x06,
   0x3E, 0x41, 0x51, 0x21, 0x5E,
   0x7F, 0x09, 0x19, 0x29, 0x46,
   0x26, 0x49, 0x49, 0x49, 0x32,
   0x03, 0x01, 0x7F, 0x01, 0x03,
   0x3F, 0x40, 0x40, 0x40, 0x3F,
   0x1F, 0x20, 0x40, 0x20, 0x1F,
   0x3F, 0x40, 0x38, 0x40, 0x3F,
   0x63, 0x14, 0x08, 0x14, 0x63,
   0x03, 0x04, 0x78, 0x04, 0x03,
   0x61, 0x59, 0x49, 0x4D, 0x43,
   0x00, 0x7F, 0x41, 0x41, 0x41,
   0x02, 0x04, 0x08, 0x10, 0x20,
   0x00, 0x41, 0x41, 0x41, 0x7F,
   0x04, 0x02, 0x01, 0x02, 0x04,
   0x40, 0x40, 0x40, 0x40, 0x40,
   0x00, 0x03, 0x07, 0x08, 0x00,
   0x20, 0x54, 0x54, 0x78, 0x40,
   0x7F, 0x28, 0x44, 0x44, 0x38,
   0x38, 0x44, 0x44, 0x44, 0x28,
   0x38, 0x44, 0x44, 0x28, 0x7F,
   0x38, 0x54, 0x54, 0x54, 0x18,
   0x00, 0x08, 0x7E, 0x09, 0x02,
   0x18, 0xA4, 0xA4, 0x9C, 0x78,
   0x7F, 0x08, 0x04, 0x04, 0x78,
   0x00, 0x44, 0x7D, 0x40, 0x00,
   0x20, 0x40, 0x40, 0x3D, 0x00,
   0x7F, 0x10, 0x28, 0x44, 0x00,
   0x00, 0x41, 0x7F, 0x40, 0x00,
   0x7C, 0x04, 0x78, 0x04, 0x78,
   0x7C, 0x08, 0x04, 0x04, 0x78,
   0x38, 0x44, 0x44, 0x44, 0x38,
   0xFC, 0x18, 0x24, 0x24, 0x18,
   0x18, 0x24, 0x24, 0x18, 0xFC,
   0x7C, 0x08, 0x04, 0x04, 0x08,
   0x48, 0x54, 0x54, 0x54, 0x24,
   0x04, 0x04, 0x3F, 0x44, 0x24,
   0x3C, 0x40, 0x40, 0x20, 0x7C,
   0x1C, 0x20, 0x40, 0x20, 0x1C,
   0x3C, 0x40, 0x30, 0x40, 0x3C,
   0x44, 0x28, 0x10, 0x28, 0x44,
   0x4C, 0x90, 0x90, 0x90, 0x7C,
   0x44, 0x64, 0x54, 0x4C, 0x44,
   0x00, 0x08, 0x36, 0x41, 0x00,
   0x00, 0x00, 0x77, 0x00, 0x00,
   0x00, 0x41, 0x36, 0x08, 0x00,
   0x02, 0x01, 0x02, 0x04, 0x02,
   0x3C, 0x26, 0x23, 0x26, 0x3C,
   0x1E, 0xA1, 0xA1, 0x61, 0x12,
   0x3A, 0x40, 0x40, 0x20, 0x7A,
   0x38, 0x54, 0x54, 0x55, 0x59,
   0x21, 0x55, 0x55, 0x79, 0x41,
   0x22, 0x54, 0x54, 0x78, 0x42, // a-umlaut
   0x21, 0x55, 0x54, 0x78, 0x40,
   0x20, 0x54, 0x55, 0x79, 0x40,
   0x0C, 0x1E, 0x52, 0x72, 0x12,
   0x39, 0x55, 0x55, 0x55, 0x59,
   0x39, 0x54, 0x54, 0x54, 0x59,
   0x39, 0x55, 0x54, 0x54, 0x58,
   0x00, 0x00, 0x45, 0x7C, 0x41,
   0x00, 0x02, 0x45, 0x7D, 0x42,
   0x00, 0x01, 0x45, 0x7C, 0x40,
   0x7D, 0x12, 0x11, 0x12, 0x7D, // A-umlaut
   0xF0, 0x28, 0x25, 0x28, 0xF0,
   0x7C, 0x54, 0x55, 0x45, 0x00,
   0x20, 0x54, 0x54, 0x7C, 0x54,
   0x7C, 0x0A, 0x09, 0x7F, 0x49,
   0x32, 0x49, 0x49, 0x49, 0x32,
   0x3A, 0x44, 0x44, 0x44, 0x3A, // o-umlaut
   0x32, 0x4A, 0x48, 0x48, 0x30,
   0x3A, 0x41, 0x41, 0x21, 0x7A,
   0x3A, 0x42, 0x40, 0x20, 0x78,
   0x00, 0x9D, 0xA0, 0xA0, 0x7D,
   0x3D, 0x42, 0x42, 0x42, 0x3D, // O-umlaut
   0x3D, 0x40, 0x40, 0x40, 0x3D,
   0x3C, 0x24, 0xFF, 0x24, 0x24,
   0x48, 0x7E, 0x49, 0x43, 0x66,
   0x2B, 0x2F, 0xFC, 0x2F, 0x2B,
   0xFF, 0x09, 0x29, 0xF6, 0x20,
   0xC0, 0x88, 0x7E, 0x09, 0x03,
   0x20, 0x54, 0x54, 0x79, 0x41,
   0x00, 0x00, 0x44, 0x7D, 0x41,
   0x30, 0x48, 0x48, 0x4A, 0x32,
   0x38, 0x40, 0x40, 0x22, 0x7A,
   0x00, 0x7A, 0x0A, 0x0A, 0x72,
   0x7D, 0x0D, 0x19, 0x31, 0x7D,
   0x26, 0x29, 0x29, 0x2F, 0x28,
   0x26, 0x29, 0x29, 0x29, 0x26,
   0x30, 0x48, 0x4D, 0x40, 0x20,
   0x38, 0x08, 0x08, 0x08, 0x08,
   0x08, 0x08, 0x08, 0x08, 0x38,
   0x2F, 0x10, 0xC8, 0xAC, 0xBA,
   0x2F, 0x10, 0x28, 0x34, 0xFA,
   0x00, 0x00, 0x7B, 0x00, 0x00,
   0x08, 0x14, 0x2A, 0x14, 0x22,
   0x22, 0x14, 0x2A, 0x14, 0x08,
   0xAA, 0x00, 0x55, 0x00, 0xAA,
   0xAA, 0x55, 0xAA, 0x55, 0xAA,
   0x00, 0x00, 0x00, 0xFF, 0x00,
   0x10, 0x10, 0x10, 0xFF, 0x00,
   0x14, 0x14, 0x14, 0xFF, 0x00,
   0x10, 0x10, 0xFF, 0x00, 0xFF,
   0x10, 0x10, 0xF0, 0x10, 0xF0,
   0x14, 0x14, 0x14, 0xFC, 0x00,
   0x14, 0x14, 0xF7, 0x00, 0xFF,
   0x00, 0x00, 0xFF, 0x00, 0xFF,
   0x14, 0x14, 0xF4, 0x04, 0xFC,
   0x14, 0x14, 0x17, 0x10, 0x1F,
   0x10, 0x10, 0x1F, 0x10, 0x1F,
   0x14, 0x14, 0x14, 0x1F, 0x00,
   0x10, 0x10, 0x10, 0xF0, 0x00,
   0x00, 0x00, 0x00, 0x1F, 0x10,
   0x10, 0x10, 0x10, 0x1F, 0x10,
   0x10, 0x10, 0x10, 0xF0, 0x10,
   0x00, 0x00, 0x00, 0xFF, 0x10,
   0x10, 0x10, 0x10, 0x10, 0x10,
   0x10, 0x10, 0x10, 0xFF, 0x10,
   0x00, 0x00, 0x00, 0xFF, 0x14,
   0x00, 0x00, 0xFF, 0x00, 0xFF,
   0x00, 0x00, 0x1F, 0x10, 0x17,
   0x00, 0x00, 0xFC, 0x04, 0xF4,
   0x14, 0x14, 0x17, 0x10, 0x17,
   0x14, 0x14, 0xF4, 0x04, 0xF4,
   0x00, 0x00, 0xFF, 0x00, 0xF7,
   0x14, 0x14, 0x14, 0x14, 0x14,
   0x14, 0x14, 0xF7, 0x00, 0xF7,
   0x14, 0x14, 0x14, 0x17, 0x14,
   0x10, 0x10, 0x1F, 0x10, 0x1F,
   0x14, 0x14, 0x14, 0xF4, 0x14,
   0x10, 0x10, 0xF0, 0x10, 0xF0,
   0x00, 0x00, 0x1F, 0x10, 0x1F,
   0x00, 0x00, 0x00, 0x1F, 0x14,
   0x00, 0x00, 0x00, 0xFC, 0x14,
   0x00, 0x00, 0xF0, 0x10, 0xF0,
   0x10, 0x10, 0xFF, 0x10, 0xFF,
   0x14, 0x14, 0x14, 0xFF, 0x14,
   0x10, 0x10, 0x10, 0x1F, 0x00,
   0x00, 0x00, 0x00, 0xF0, 0x10,
   0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
   0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
   0xFF, 0xFF, 0xFF, 0x00, 0x00,
   0x00, 0x00, 0x00, 0xFF, 0xFF,
   0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
   0x38, 0x44, 0x44, 0x38, 0x44,
   0xFC, 0x4A, 0x4A, 0x4A, 0x34, // sharp-s or beta
   0x7E, 0x02, 0x02, 0x06, 0x06,
   0x02, 0x7E, 0x02, 0x7E, 0x02,
   0x63, 0x55, 0x49, 0x41, 0x63,
   0x38, 0x44, 0x44, 0x3C, 0x04,
   0x40, 0x7E, 0x20, 0x1E, 0x20,
   0x06, 0x02, 0x7E, 0x02, 0x02,
   0x99, 0xA5, 0xE7, 0xA5, 0x99,
   0x1C, 0x2A, 0x49, 0x2A, 0x1C,
   0x4C, 0x72, 0x01, 0x72, 0x4C,
   0x30, 0x4A, 0x4D, 0x4D, 0x30,
   0x30, 0x48, 0x78, 0x48, 0x30,
   0xBC, 0x62, 0x5A, 0x46, 0x3D,
   0x3E, 0x49, 0x49, 0x49, 0x00,
   0x7E, 0x01, 0x01, 0x01, 0x7E,
   0x2A, 0x2A, 0x2A, 0x2A, 0x2A,
   0x44, 0x44, 0x5F, 0x44, 0x44,
   0x40, 0x51, 0x4A, 0x44, 0x40,
   0x40, 0x44, 0x4A, 0x51, 0x40,
   0x00, 0x00, 0xFF, 0x01, 0x03,
   0xE0, 0x80, 0xFF, 0x00, 0x00,
   0x08, 0x08, 0x6B, 0x6B, 0x08,
   0x36, 0x12, 0x36, 0x24, 0x36,
   0x06, 0x0F, 0x09, 0x0F, 0x06,
   0x00, 0x00, 0x18, 0x18, 0x00,
   0x00, 0x00, 0x10, 0x10, 0x00,
   0x30, 0x40, 0xFF, 0x01, 0x01,
   0x00, 0x1F, 0x01, 0x01, 0x1E,
   0x00, 0x19, 0x1D, 0x17, 0x12,
   0x00, 0x3C, 0x3C, 0x3C, 0x3C,
   0x00, 0x00, 0x00, 0x00, 0x00
};

#endif

Could be a problem with PROGMEM?

- Mon Jun 01, 2015 8:42 pm #19173 In pgmspace.h, there is already a definition of PROGMEM is :

#define PROGMEM ICACHE_RODATA_ATTR

In your sketch, you redefinite it to a blank, so all your variables dont go into RODATA as you expect.

- Tue Jun 02, 2015 4:12 am #19202 Hi martinayotte. That's right, I have redefined PROGMEM.
If I define PROGMEM, then the font[] works and image[] too (if much more short than 20480 items).

If I don't redefine it, then the code crashes on reading of font[], but it can points to image[] with successful (and shows the image[]).
I don't know because the program crashes on font[] but not on image[] ! Do you have some ideas?

Do you know how much memory I can write in PROGMEM?

- Tue Jun 02, 2015 8:19 am #19216 When you do

Code: Select all#define PROGMEM


You are essentially saying "replace any occurrence of PROGMEM in my code with blank space".
So, it's exactly the same as if you'd left the word "PROGMEM" out of your program entirely. That is, you are not using progmem at all, you're just using regular old RAM at this point.