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Panel_M5HDMI: count the command sent right after a busy wait #372

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Merged
lovyan03 merged 1 commit into from
Oct 21, 2026
Merged

Panel_M5HDMI: count the command sent right after a busy wait #372

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4 changes: 3 additions & 1 deletion src/lgfx/v1/panel/Panel_M5HDMI.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -969,7 +969,9 @@ namespace lgfx

if ((force && _total_send) || (_total_send += length) >= 512)
{
_total_send = 0;
// Count the command sent right after this wait. Otherwise a long COPYRECT goes unchecked,
// and the next pixel stream overflows the FPGA's ~2 KB receive queue (excess bytes are dropped).
_total_send = length;
uint32_t wait = 0;
_bus->beginRead();
while (_bus->readData(8) == 0x00)
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