Arty: talk to SPI EEPROM - part 1: hardware and modules

RE: Arty: talk to SPI EEPROM - part 1: hardware and modules

genebren — Sat, 25 Jun 2022 20:01:49 GMT

Nice catch on the I2C versus SPI interfaces. Good luck moving forward on this design.

RE: Arty: talk to SPI EEPROM - part 1: hardware and modules

DAB — Sat, 25 Jun 2022 19:21:33 GMT

It is always good to check interfaces several times before you connect and test them.

RE: Arty: talk to SPI EEPROM - part 1: hardware and modules

Jan Cumps — Sat, 25 Jun 2022 19:19:21 GMT

The SPI module I selected won't do. It will hold CS low until the requested data size is sent. But that's a fixed size. The EEPROM has requirements to hold the CS until a activity is completed. In my case, that can be 1 byte (an instruction, or 4 bytes: instruction, 2 byte address, data).

I can either adapt the current one I'm using - add an input parameter telling for how many bytes to hold the CS low, or look for an other one...