LPC Microcontrollers中的主题 Re: IAP_CopyRamToFlash undocumented error code

IAP_CopyRamToFlash undocumented error code

manderson107 — Wed, 21 Dec 2022 16:34:00 GMT

Greetings,

I am working with an LPC54608. I am calling IAP_CopyRamToFlash to reprogram flash. Every page successfully writes except for page 0 of the flash. I get an error code 10221. 102 kStatusGroup_IAP does not have a code 21 documented in the header files or the user manual for the processor.

Can someone help me understand this error code from the ROM IAP function?

Thanks.

Re: IAP_CopyRamToFlash undocumented error code

xiangjun_rong — Thu, 22 Dec 2022 02:34:43 GMT

Hi,

I suppose that you call the IAP_CopyRamToFlash() in application code, furthermore you allocate the application in the flash memory from 0x0000_0000, especially the interrupt and Reset vectors are located at 0x0000_0000, the page 0 is at the address 0x0000_0000, if you erase page0, the application code is destroyed, interrupt/Reset vectors are destroyed, you application code can not run in the case. that is why I suppose you can not erase page 0.

Hope it can help you

XiangJun Rong

Re: IAP_CopyRamToFlash undocumented error code

manderson107 — Thu, 22 Dec 2022 14:20:49 GMT

Thanks for your prompt response.

Actually. The error code documentation in UM10912 5.6.15 led me astray. 21 = 0x15 which is a user code checksum error. Our executable that we were writing into the flash did not have checksum applied. Calling the checksum command on the final binary solved our problem.

checksum -p LPC54608 -d our.bin

https://community.nxp.com/t5/LPC-Microcontrollers/LPC546xx-iap-write-returns-undocumented-error-code-21/m-p/852754#M33895