C Code to Read and Write to SPI Flash Memory

Avg Bid (GBP)
Project Budget (GBP)
£20 - £250

Project Description:
A small number of C functions are required to be written.

The software is to run on an ATMEL ATSAM4S16B ARM processor. The code will be in C to compile using atmel studio 6. The software is for an embedded system. RAM is very limited. No mallocs should be used - local variables should be limited.

It would be useful if you had the real hardware - this CPU and the AT25DF081 memory - to test your code. But this is unlikely and it is acceptable for you to write the code using atmel studio and I will test here. I may take 1-2 days or more to test the code that you send because I am very busy.


The software will be used to maintain a copy of some C arrays/structures in external SPI Flash memory in an AT25DF081 memory device. It is possible that, during a write to the AT25DF081, the data may be corrupted. So a checksum is needed to confirm that the data in the AT25DF081 is written correctly. If the data is corrupted in the AT25DF081, the main application can then safely ignore it.

So, a set of functions are needed which will read and write and check the data in the AT25DF081 memory:

The functions are fm_write, fm_read, and fm_checksum.

Basic operation is to write from main memory to the AT25DF081 and to read back again. To check that the data is correct in the AT25DF081
it is necessary to add a checksum and length value in the AT25DF081 memory area.

see text file for full info

Skills required:
C Programming
Additional Files: spi_memory_functions.txt
About the employer:
Public Clarification Board
Bids are hidden by the project creator. Log in as the employer to view bids or to bid on this project.
You will not be able to bid on this project if you are not qualified in one of the job categories. To see your qualifications click here.

Hire happycrab
£ 150
in 3 days
£ 300
in 6 days
£ 222
in 7 days
£ 170
in 2 days
Hire jainvikas8
£ 888
in 15 days
Hire photonzephyr
£ 100
in 5 days
£ 250
in 14 days
£ 150
in 3 days
Hire ahmedfoudaa
£ 222
in 7 days
Hire Anthonus
£ 277
in 30 days