tag

#gpio

2 posts

LinuxDeep Dive October 4, 2026 7 min read

Linux GPIO Character Device v2: Line Requests and Event Lifetimes

Request GPIO lines through the Linux character-device API, manage edge-event buffers and line state, and avoid confusing GPIO numbers with hardware identity.

#linux#gpio#embedded

RetrogamingDeep Dive October 4, 2026 8 min read

Nintendo DS RTC Serial Protocol: GPIO Edges, Command Bytes, and BCD Time

Emulate the Nintendo DS RTC over serial GPIO, from command and bit edges to BCD time, status modes, alarms, and deterministic save-state tests.

#nintendo-ds#rtc#serial-io