Jean-Michel Hautbois wrote:
[snip]
The error in programming tells that it couldn't write the second byte of the u-boot file. Indeed, I have displayed the memory before and after the prog command, and the first byte is correctly written. I can't understand where my problem is.
Thx and Regards, JM
Hi JM,
After you erase the sector/chip, is it all 0xFF (especially the second location)? (I expect it is, but it is good to start with the fundamentals.)
If so, I would speculate your flash chip configuration isn't right. You need to know how your hardware is wired: * How many chips in parallel on the bus? * Bus width on each chip? * Bus width into the processor?
Common configurations are things like one 8-bit wide chip running 8 bits into the processor, one 16-bit wide chip running 16 bits into the processor, two 16-bit wide chips in parallel running 32 bits into the processor.
(Some flash chips can be configured to be either 8 or 16 bits wide depending on a strapping pin. For them, you need to figure out how the hardware has them configured.)
Good luck, gvb