diff options
Diffstat (limited to 'src/esp32p4/uart.zig')
| -rw-r--r-- | src/esp32p4/uart.zig | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/src/esp32p4/uart.zig b/src/esp32p4/uart.zig index 53ee29df..15599423 100644 --- a/src/esp32p4/uart.zig +++ b/src/esp32p4/uart.zig @@ -1,4 +1,4 @@ -//! UART0 as the editor's terminal: bytes out, bytes in, and nothing else. +//! UART0 transport for the editor and standalone GPIO 9P firmware. //! //! This is the whole of the firmware's I/O. There is no framebuffer and no keyboard; the board //! emits ANSI and consumes ANSI, and the terminal emulator on the far end of the CH340 does the @@ -37,13 +37,8 @@ //! with nothing readable left to explain it. Everything else here touches FIFO offset 0x000 and the //! status register, and nothing else. //! -//! The DIVIDER is the one exception, and it was carved out for the second image rather than for this -//! one: `docs/registry.typ` `BOARD-1`. The editor's console is opened by a human at 115200 and the -//! firmware inherits that divider (which is why the paragraph above used to say "not the divider"); -//! the 9P image (`nine.zig`) has a program on the far end that opens the port at whatever rate the -//! image was built for, and eight times the baud is eight times less latency on every `Tread`. So -//! `setBaud` exists, this file still never calls it, and `app.zig` still never calls it — the only -//! caller is the image whose host side is opened to match. +//! The editor inherits the bootloader's 115200 divider. `src/esp32p4_9p.zig` +//! calls `setBaud` for its 921600 protocol connection; the host must match it. const hal = @import("hal"); const input_rescue = @import("input_rescue.zig"); |