Using HAL NAND

[neemiasims]

Good afternoon.

I am configuring a NAND memory using FMC on the STM32H7. I am dealing with the following scenario: HCLK = 80 MHz (to match the example in AN4761) and a NAND memory SkyHigh Memory S34ML01G1 Following all the calculations specified in AN4761, I am encountering an error where the last byte fails on some pages. When a read is performed more than once, the byte is corrected, but there is this inconsistency. Where could the error be?

[KDJEM.1 · Accepted solution]

Hello @neemiasims,

Which STM32H7 are you using?

Please try to configure the NAND memory area as Strongly-Ordered using MPU, for that I recommend you to take a look at STM32 MPU tips - 1 MPU usage in STM32 with ARM Cortex M7.

Thank you.

Kaouthar

[neemiasims]

I am using the STM32H723ZGTx. I am not working with MPU; it was disabled in the 'CORTEX_M7'. I will look into using it to see if it solves the problem. One detail: If I add a 1ms delay after each read and write, the last byte works perfectly, but this makes the memory operation very slow.