1.. _module-pw_sys_io_ambiq_sdk: 2 3=================== 4pw_sys_io_ambiq_sdk 5=================== 6.. pigweed-module:: 7 :name: pw_sys_io_ambiq_sdk 8 9``pw_sys_io_ambiq_sdk`` implements the ``pw_sys_io`` facade over UART using the 10Ambiq Suite SDK HAL. 11 12The UART baud rate is fixed at 115200 (8N1). 13 14Setup 15===== 16This module requires relatively minimal setup: 17 181. Write code against the ``pw_sys_io`` facade. 192. Specify the ``dir_pw_sys_io_backend`` GN global variable to point to this 20 backend. 213. Call ``pw_sys_io_Init()`` during init so the UART is properly initialized and 22 configured. 23 24The UART peripheral and the GPIO pins are defined in the ``am_bsp.h`` file. Make sure 25that the build argument ``pw_third_party_ambiq_PRODUCT`` is set correctly so that 26the correct bsp header file is included. 27