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[asdf2as144 0]

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[igor 163]

Have you checked the LCD print routines (e.g. if you set data = 5, does it write 5?).

 

What is the data type of "data"? (does it match what flash.read expects)?

 

Does the flash.write change the values in flash?

(e.g. if you do a print loop before the flash write, and one afterwards, do you get different values).

 

Have you checked the address math?  (To be sure that (unsigned char*)potvalue + offsat gives you what you want.)

(e.g. print the list of addresses to the serial port, and be sure they go up by one byte each time).

[StupidPig 10]

I forgot the flash write routine will clear the flash first or not, but I kind of remember it didn't. If not, you will have to clean the flash before write, as write only able to set 0 to 1, but not the other way.

[roadrunner84 466]

I forgot the flash write routine will clear the flash first or not, but I kind of remember it didn't. If not, you will have to clean the flash before write, as write only able to set 0 to 1, but not the other way.

Are you sure it's not the other way around (so, erasing will set all bits to 1, writing can only set them to 0)?

[StupidPig 10]

Are you sure it's not the other way around (so, erasing will set all bits to 1, writing can only set them to 0)?

Yup, my bad, erasing will get the bit as 1 rather than 0, and write will only able to get a bit become 0. When I type I just assuming "erase" means 0. Anyway, the whole point is about erase is needed before write.