- Wed Nov 30, 2016 10:48 am
#58898
I'm writing a system on the ESP8266-12 which stores some values in EEPROM.
I declare a structure:
- and use that structure in the program to read and write the variables. And it all worked fine until today.
Today, is one of those days when 2 + 2 = orange. Code lines are plain ignored. Code which worked well and has remained untouched now fails. I'm not looking for help with that, but the most likely explanation I can think of is that I'm corrupting the program somehow by incorrectly writing to EEPROM. Is that possible? Or is the block allocated separately?
I am reading back the values I wrote and one value is wrong - an integer reports its value as the SSID stored nearby. I'm sure that should nail it for me but I can't get there. Anyone?
I've read about structure packing, but I don't know if it's necessary here. Anyone know?
I'm starting the EEPROM malarkey with EEPROM begin(sizeof(ROMstatus)); and finishing with EEPROM.end(). I do the write with EEPROM.put(0, ROMstatus); Is this OK?
I declare a structure:
Code: Select all
typedef struct
{ char thisSSID[32];
char thisPassword[32];
int setMoisture;
int loggingInterval;
int pumpDuration;
int dumpPercentage;
boolean powerSaving;
boolean systemActive;
} EEPROMarea;
EEPROMarea ROMstatus;
- and use that structure in the program to read and write the variables. And it all worked fine until today.
Today, is one of those days when 2 + 2 = orange. Code lines are plain ignored. Code which worked well and has remained untouched now fails. I'm not looking for help with that, but the most likely explanation I can think of is that I'm corrupting the program somehow by incorrectly writing to EEPROM. Is that possible? Or is the block allocated separately?
I am reading back the values I wrote and one value is wrong - an integer reports its value as the SSID stored nearby. I'm sure that should nail it for me but I can't get there. Anyone?
I've read about structure packing, but I don't know if it's necessary here. Anyone know?
I'm starting the EEPROM malarkey with EEPROM begin(sizeof(ROMstatus)); and finishing with EEPROM.end(). I do the write with EEPROM.put(0, ROMstatus); Is this OK?
