An ESP8266 program that sent a long I2C Write string to a slave device no longer worked when ported to ESP32. An oscilloscope trace showed SCL was only going to mid level when the slave device was ...

With esp32 ,after 2 month of work without problem, my lcd 16x2 with PCF8574 (external component) have issue that I don't understand. The inizialization don't start ...

Abstract: Aiming at the application of I2C bus in real-time communication system, this paper starts with the problem of communication deadlock, analyzes the protocol of I2C bus and the traditional ...