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