ESP32 Forum

hi,

I am using new Drivers in v5.3 i2c Master and Slave Drivers.
Both Master and Slave are Esp32

I send from Master for Example, 1 byte 0x55

At the Slave I get 2 times 0x55 0x55
or Even Some times I get four Times 0x55 0x55 0x55 0x55

Any Idea Why is it so ?

Thanks

Could be do to several things...

1. Glitches on I2C bus: Check pull-up resistors and try reducing bus speed (e.g., to 100kHz).
2. Master retransmissions: Ensure the master sends data only once and handles acknowledgments correctly.
3. Slave buffer issues: Clear the slave buffer after reading data.
4. Repeated slave interrupts: Ensure the slave ISR isn’t triggered multiple times per transmission.

Without the code, cannot tell you more unfortunatelly.