Add LCDwiki E32R40T (4.0" ST7796S 320x480) board support (#175) - #178
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Keralots wants to merge 2 commits into
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Add LCDwiki E32R40T (4.0" ST7796S 320x480) board support (#175)#178Keralots wants to merge 2 commits into
Keralots wants to merge 2 commits into
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New community env `e32r40t` for the LCDwiki 4.0" ESP32-32E display (issue #175): classic ESP32-WROOM-32E, ST7796S 320x480 over 4-wire SPI, XPT2046 resistive touch that shares the LCD SPI bus, onboard common-anode RGB LED (22/16/17). 4 MB flash / no PSRAM -> 1 printer (BOARD_LOW_RAM), DISPLAY_320x480 layout. - LGFX_E32R40T: Panel_ST7796 on VSPI + shared-bus Touch_XPT2046 (bus_shared, real MISO(12) on the bus so the touch can read; panel stays write-only). - Touch runs through the LovyanGFX getTouch() fallback (first env to use it), with a boot release-gate ported from the HSPI backend as a phantom guard. - New TOUCH_WAKE_LONGPRESS capability so the resistive wake-suppression covers both the HSPI and the shared-bus touch paths; main.cpp tests the capability. - displayDevice() exposes the concrete LGFX_Device for touch, since tft_ptr stays typed as the drawing base (LovyanGFX) for the JC3248 sprite retarget. - Board defaults + pin deny-lists in config.h / led.cpp / button.cpp / buzzer.cpp. - Drop HAS_ERROR_TEXT_TABLE (~36 KB) so the image fits the min_spiffs slot; sentences still come from the portal mirror, same trade as the C3s. Hardware unverified (no owner board); the #175 reporter will test builds.
Lets `python merge_bins.py --board e32r40t` (alias `e32`) produce the Full + OTA images for the LCDwiki E32R40T. Classic ESP32, so bootloader at 0x1000. Not added to release.py WEB_FLASHER_BOARDS - the board is still hardware- unverified and out of the published flasher set.
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Closes #175 once verified.
What
Adds a community env
e32r40tfor the LCDwiki "4.0inch ESP32-32E Display" (SKU E32R40T): classic ESP32-WROOM-32E, ST7796S 320x480 over 4-wire SPI, XPT2046 resistive touch that shares the LCD SPI bus, onboard common-anode RGB LED. 4 MB flash / no PSRAM → 1 printer (BOARD_LOW_RAM),DISPLAY_320x480layout.Same lcdwiki ESP32-32E family as the 2.8" CYD clone, but a bigger panel.
Notable bits
Bus_SPIas the LCD (bus_shared=true); the bus muxes the real MISO(12) so the touch can read, the panel stays write-only. This is the first env to drive touch through LovyanGFX'sgetTouch()fallback.displayDevice()accessor.getTouch()/setTouchCalibrate()live onlgfx::LGFX_Device, buttft_ptris intentionally typed as the drawing baseLovyanGFX(so JC3248 can retarget it to a sprite). AddeddisplayDevice()to reach the concrete device for touch — this is why the getTouch path had never compiled before.TOUCH_WAKE_LONGPRESScapability. The resistive wake-suppression inhandleWakeButton()now keys off a capability that covers both the HSPIUSE_XPT2046backend and this shared-bus path, instead of the driver macro.DISPLAY_320x480(links the ~107 KB inter_22 font). The image overran the min_spiffs slot by 672 B, soHAS_ERROR_TEXT_TABLEis dropped here (~36 KB) — error sentences come from the portal mirror, same trade as the C3s. firmware.bin now 1,931,024 / 1,966,080 B.config.h/led.cpp/button.cpp/buzzer.cpp;merge_bins.py --board e32r40tbuilds the images. Not added to the web flasher / release set yet.Validation
pio run -e e32r40tclean; firmware.bin fits the slot (35 KB free).TOUCH_WAKE_LONGPRESS=1) and ws_lcd_200 (capacitive,=0) both boot healthy.