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Fix T-beam Supreme S3 display

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This commit is contained in:
Wessel Nieboer
2026-08-10 13:39:16 +02:00
parent f6c25e6a25
commit 32bd6d48d6
1 changed files with 15 additions and 2 deletions
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src/helpers/ui/SH1106Display.cpp
+15 -2
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@@ -24,8 +24,21 @@ bool SH1106Display::begin()
{
// Wire must already be initialised by board.begin() before this is called.
// Boards with non-standard SH1106 addresses should define DISPLAY_ADDRESS
// in their variant/platformio configuration.
return i2c_probe(Wire, DISPLAY_ADDRESS) && display.begin(DISPLAY_ADDRESS, true);
// in their variant/platformio configuration. The SA0 strap selects 0x3C or
// 0x3D and differs between revisions of the same board (e.g. T-Beam
// Supreme), so fall back to the other address of the pair.
uint8_t addr = 0;
if (i2c_probe(Wire, DISPLAY_ADDRESS)) {
addr = DISPLAY_ADDRESS;
} else if (i2c_probe(Wire, DISPLAY_ADDRESS ^ 1)) {
addr = DISPLAY_ADDRESS ^ 1;
}
// Run the Adafruit init even when no panel answered: it is what allocates
// the frame buffer and the I2C device. Skipping it leaves i2c_dev and
// spi_dev NULL, and UITask::begin() calls turnOn() regardless of our
// return value, which then dereferences the null spi_dev.
bool ok = display.begin(addr ? addr : DISPLAY_ADDRESS, true);
return addr != 0 && ok;
}
void SH1106Display::turnOn()