Files
Flipdot-display/src/esp32/nano_link/nano_monitor.cpp
T
mangavalkandClaude Opus 5.5 090c2bf8ae Fix shifted pictures: non-blocking Nano drawing, frame check, refresh settings
The Nano's periodic full redraw blocked for ~0.8 s. A frame that arrived
meanwhile overflowed its 64-byte serial buffer; lost bytes in a bitmap
shift the rest of the image (picture moved up), and diff frames never
repaired it.

- Nano: all drawing (frames, effects, the dot refresh) runs from update()
  in ~1 ms slices; the refresh pauses while a frame is received or shown
- New commands: C (reply with the image checksum) and I (refresh minutes,
  EEPROM)
- ESP32: NanoMonitor asks for the checksum after frames and sends the whole
  image again on a mismatch, missing answer or Nano restart; counts ERR
  replies. Periodic whole-image resync.
- Settings: "Dot refresh" and "Image resync" intervals (settings v5,
  v4 records are migrated)
- System tab: loop timing, free memory, frame check counts
- test_driver: the real driver against a simulated panel

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-16 15:20:26 +02:00

44 lines
936 B
C++

#include "nano_link/nano_monitor.h"
NanoMonitor::NanoMonitor(NanoLink &nano, BROSE9323 &display) : _nano(nano), _display(display)
{
}
bool NanoMonitor::loop(uint32_t now, uint32_t resync_ms)
{
bool on = _nano.isOn();
if (on != _was_on)
{
// Switched on (the Nano booted, NanoLink::on() took its READY) or off
_was_on = on;
_check.reset(now);
_len = 0;
}
if (!on)
return false;
// First the answers that arrived (also while loop() was blocked), then the timeouts
Stream &serial = _nano.stream();
while (serial.available())
{
char c = serial.read();
if (c == '\n')
{
_line[_len] = '\0';
_check.line(_line, now);
_len = 0;
}
else if (_len < sizeof(_line) - 1)
_line[_len++] = c;
}
bool resync = _check.resyncNow(now, resync_ms);
uint32_t frames = _display.framesSent();
if (_check.due(frames, now))
{
serial.print("C\n");
_check.sent(_display.crc(), frames, now);
}
return resync;
}