# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/nqolsfa
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如何使用 gpio 模擬 mdio 通信？**
一、前言----實際項目開發中，由於設計原因，會將 phy 的 mdio 引腳連接到 SoC 的 2 個空閒 gpio 上，這樣就無法通過 Gmac 自有的架構實現修改 phy，因此只能通過 GPIO 模擬的方式實現 MDIO，好在 Linux 支持 MDIO via GPIO 功能。該功能需要用到內核驅動 mdio-bitbang.c 和 mdio-gpio.c。本例 ：平臺： 復旦微ke ⌘ Read more