Read more about the I2C protocol here I2C protocol ... sda_out : 1'bz; assign sda_in = sda; This module sends commands or data to the LCD in 4-bit mode. Read more about 4-bit mode LCD communication ...
Bresser 868 MHz Weather Sensor Radio Receiver based on ESP32/RP2040 and SX1262/SX1276/LR1121 - sends data to a LoRaWAN Network ...