Interfacing issue between the STM32F407 controller and SST25Vf016B flash using SPI

KHira.11 · ‎2020-01-13

I am trying to interface the STM32F407 controller and SST25Vf016B flash using SPI protocol for chibios. I have completed the configuration steps and I am also able to read the manufacturer ID reg, device ID reg for Flash. But when I try to write data and read it I am getting garbage value. Maybe the data is not written properly. I have also enabled different modes for flash like Write enable and EWSR (Enable Write Status Register). Any ideas to solve the issue.

Thanks

Kalpesh

waclawek.jan · ‎2020-01-13

Before writing, do you erase the respective blocks in FLASH?

After write and erase command, do you read the Status byte and wait until BUSY bit clears?

JW

KHira.11 · ‎2020-01-14

Hi,

I am doing chip erase before writing data into it. After write and erase, when I read status byte , I am getting the following data.

_____________________________________________________________

SPI Initialization

Status reg data-> 1C

Status reg data-> 4

RECEIVED DATA -> 0

Jedec manufacturer id data-> BF

Jedec memory type data-> 25

Jedec device id data-> 41

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Status reg data-> 4

RECEIVED DATA -> 0

Jedec manufacturer id data-> BF

Jedec memory type data-> 25

Jedec device id data-> 41

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