1.. _module-pw_sys_io_ambiq_sdk: 2 3=================== 4pw_sys_io_ambiq_sdk 5=================== 6``pw_sys_io_ambiq_sdk`` implements the ``pw_sys_io`` facade over UART using the 7Ambiq Suite SDK HAL. 8 9The UART baud rate is fixed at 115200 (8N1). 10 11Setup 12===== 13This module requires relatively minimal setup: 14 151. Write code against the ``pw_sys_io`` facade. 162. Specify the ``dir_pw_sys_io_backend`` GN global variable to point to this 17 backend. 183. Call ``pw_sys_io_Init()`` during init so the UART is properly initialized and 19 configured. 20 21The UART peripheral and the GPIO pins are defined in the ``am_bsp.h`` file. Make sure 22that the build argument ``pw_third_party_ambiq_PRODUCT`` is set correctly so that 23the correct bsp header file is included. 24