Question
Problem communication STM32F405VG and I2C EEPROM (M24M02-DRMN)
Posted on October 26, 2017 at 12:05
Hi all.
We have a lot of problems communicating with one I2C EEPROM (M24M02-DRMN). Many times when we try to write or read we see into HAL functions for reading/sending HAL_BUSY answer. Then, we lost data in our application after power-up.
The interface for epprom is easy, The IC have following pins:
1) We put pin 1,2,4 to ground.
2) Pin A2 is pull-up to 3.3V with one 10k resistor.
3) VCC is 3.3V
4) /WC is tied to GPIO line microcontroller
5) SCL and SDA is i2c bus and they have the pull-up resistor for working bus.
Do you know similar problems.
Thans in advance.
Best regards!
#i2c-problem ##hal_busy #hal-driver #eeprom