GP2040-CE (Community Edition) is a gamepad firmware for the Raspberry Pi Pico and other boards based on the RP2040 microcontrollers that combines multi-platform compatibility, low latency and a rich ...
Raspberry Pi Pico's built-in bootloader allows you to write firmware via USB or SWD. However, in some situations, other interfaces may be useful. Picoboot3 now offers the options of UART, I2C and SPI.