The function called screen_init() is the one where I send the commands as shown in the LCD1602's datasheet. Then I use the functions called command(), strobe_enable() and write_to_expander(). In the function: 1.) command() - I break down the 8-bit data into two 4-it nibbles and call strobe_enable() ...

I am writing a I2C Driver for the LCD1602 (with PCF8574) Module when connected to ESP32. I have read the I2C Seciion of the ESP32 Datasheet to understand the working of it in ESP32. I am using the 'i2c.h' inside the driver folder as the Hardware Abstraction Layer in my custom driver. So, I also have...