Why the FLASH_VerifyProgram does not report a failed address and data?

GlebPlekhotko — Tue, 02 Apr 2024 13:15:58 GMT

Hello to the community!

A little question/report about behavior of the flash memory API embedded into the LPC5528 MCU.

I'm currently debugging some flash-related issue and while doing that noted, that the "FLASH_VerifyProgram" does not actually report neither address nor data when it meets a discrepancy. The code snippet is the following:

uint8_t buffer[512]; void flashTest(void) { uint32_t failedAddress = 0x01234567; uint32_t failedData = 0x89ABCDEF; FLASH_Init(&flashConfig); for (size_t byte = 0; byte < sizeof checkBuffer; ++byte) { buffer[byte] = byte; } for (uint8_t lap = 0; lap < 10; ++lap) { FLASH_Erase(&flashConfig, 0x0007B600, 0x4A00, kFLASH_ApiEraseKey); FLASH_Program(&flashConfig, 0x0007B600, buffer, sizeof buffer); if (lap == 9) { buffer[0] += 1; } if (FLASH_VerifyProgram(&flashConfig, 0x0007B600, sizeof buffer, buffer, &failedAddress, &failedData)) { ; } }

As you can see, I perform a series of the erase-program operation and alter a single byte at the very end to trigger the verification error.

And the "FLASH_VerifyProgram" indeed reports an error, but both "failedAddress" and "failedData" variables remain unchanged.

Is it a bug or I don't understand something?

Best regards!

Re: Why the FLASH_VerifyProgram does not report a failed address and data?

Alice_Yang — Thu, 11 Apr 2024 02:40:09 GMT

Hello @GlebPlekhotko

Sorry for the inconvenient to you. And thanks for your report.

I have taken ticket to our internal team.

Thanks.

Alice

topic Why the FLASH_VerifyProgram does not report a failed address and data? in LPC Microcontrollers

Why the FLASH_VerifyProgram does not report a failed address and data?

Re: Why the FLASH_VerifyProgram does not report a failed address and data?