Potenta H7 connect I2C to 24LC1025

Projects Networking, Protocols, and Devices
1

Hi,

This is my equipment.

  • Portenta H7
  • Porttenta Mid Carrier.
  • 24LC1025 I2C EEPROM. (I added the datasheet below)

I would like use the 24LC1025 to store a handfull of variables. I have worked my way through the I2C libtraries that include I2C port scanners etc. I alos found that the Midcarrier H7 combinaton has 3 x I2C ports but one must be carfull which ones you use.

I tested out a number of teh libraries even one the Rob tiljaard made for this sepcific EEPROM. I think it probaly not correct working with the H7.

I connected my EEPROM to the I2C2 pins on the mid carrier breakout pins. I alos wired in 10k resitsors as pull ups for the SCL and SDA pins.

One the EEprom I connected the rest of the pins in this way.

  • A0 - GND on the midcarrier breakout pins.
  • A1 - GND on the midcarrier breakout pins.
  • A2 - Vcc Out on the midcarrier breakout pins.
  • Vss - GND on the midcarrier breakout pins.
  • SDA - I2C2 SDA on the midcarrier breakout pins. (10k Pull up)
  • SCL - I2C2 SCL on the midcarrier breakout pins. (10k Pull up)
  • WP - GND on the midcarrier breakout pins.
  • VCC - Vcc Out on the midcarrier breakout pins.

Here is my qeustions.

  1. Which I2C port on the breakout headers is correct to use for this EEOPROM? Will I2C2 work?
  2. Are the connections as I discribe correct?
  3. Can you please recommned sample code, valid library or any other resource I can look at to assit me in connecting the EEPROM. So that I can write and read to it.

Any comments and suggestions are welcome.

24AA1025-24LC1025-24FC1025-1024-Kbit-I2C-Serial-EEPROM-20001941M.pdf (481.6 KB)

2

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.