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Add Heltec WiFi LoRa 32 Expansion Kit V2 support - #471
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bmorcelli merged 1 commit intoNov 7, 2026
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Closes #357.
Adds a Launcher target for the Heltec WiFi LoRa 32 Expansion Kit V2 with the V4-R8 mainboard, 2.8-inch ST7789P3 touchscreen and microSD expansion. The LCD and SD card share the hardware SPI bus. Touch reads the CHSC6xxx mapped report after the LCD releases their shared reset line. USER and IO use the existing two-button navigation, with an optional active-high second input for IO. The board guide covers installation, boot entry and recovery.
Tested on a V4-R8 with 16 MiB flash and 8 MiB octal PSRAM. Launcher mounted the SD card and accepted touchscreen and button navigation. Brightness, OFF and USER wake were checked on the device. Installed the Heltec build of LORA Tunnel 0.5.0 through Launcher's serial interface, booted it, returned to the Launcher menu and compared the installed app against the original binary on flash. The host missed the final serial acknowledgement at reboot. Boot, slot contents and the partition table were verified independently.
Both
heltec-lora32-expansion-v2andseeedstudio-esp32s3-touch-147build locally. The Heltec application uses 1,368,992 of 1,572,864 bytes in the Launcher partition.The online installer requests the board-specific
heltec_lora32_expansion_v2category withesp=S3. LauncherHub currently returns “Category not found”; catalog publication requires a backend entry. SD-side installation, USB mass-storage transfers and network installation remain separate from the serial installation test.The tested installer and checksum are available on the contributor fork.