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Issue #2668 [Fix] Heltec t096 RTC option#2669

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dl1rf wants to merge 1 commit into
meshcore-dev:devfrom
dl1rf:fix_T096_RTC_option
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Issue #2668 [Fix] Heltec t096 RTC option#2669
dl1rf wants to merge 1 commit into
meshcore-dev:devfrom
dl1rf:fix_T096_RTC_option

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@dl1rf
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@dl1rf dl1rf commented Jun 2, 2026

Fixes to support RTC PCF8563 option with Heltec T096 board.
Only 1 I2C bus enabled to reduce unused resources.

@dl1rf dl1rf changed the title Issue #2668 Issue #2668 Heltec t096 RTC option Jun 2, 2026
@dl1rf dl1rf changed the title Issue #2668 Heltec t096 RTC option Issue #2668 [Fix] Heltec t096 RTC option Jun 3, 2026
@Aliasmk
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Aliasmk commented Jun 4, 2026

Wouldn't this break systems that use I2C devices on pin 7 & 8?

@dl1rf
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dl1rf commented Jun 4, 2026

The fix only target Heltec T096 device. No other devices.
The Heltec T096 has no I2C devices connected to pin 7 & 8. (Reference: schematics of Heltec T096).
External user connected I2C devices have to switch to RTC_SDA (header P2 pin 18) and RTC_SCL (header P2 pin 17) lines.
These lines are documented in the Heltec T096 documentation (schematics).

@dl1rf
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dl1rf commented Jun 4, 2026

Benefit of the provided fix is that the already fully supported RTC PCF8563 can be placed to the yellow marked space at the T096 board.
IMG_4775

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