Add Freenove FNK0104B (2.8" ILI9341 ESP32-S3) board

.github/workflows/buil_parallel.yml

@@ -46,6 +46,7 @@ jobs:
           - { env: "m5stack-cores3",                  family: "ESP32-S3",}
           - { env: "m5stack-dinmeter",                family: "ESP32-S3",}
           - { env: "esp32-s3-devkitc-1",              family: "ESP32-S3",}
+          - { env: "Freenove-FNK0104AB",              family: "ESP32-S3",}
           - { env: "esp32-c5",                        family: "ESP32-C5",}
           - { env: "esp32-c5-tft",                    family: "ESP32-C5",}
           - { env: "nm-cyd-c5",                       family: "ESP32-C5",}

boards/Freenove-FNK0104AB/Freenove-FNK0104AB.ini

@@ -0,0 +1,51 @@
+; PlatformIO Project Configuration File
+;
+; Freenove-FNK0104AB - 2.8" IPS ESP32-S3 Display Module with Capacitive Touch
+; Manufacturer: Freenove (FNK0104B) — ILI9341 2.8" variant of the ES3C28P design
+;
+; Hardware:
+;   - ESP32-S3R8 (8MB OPI PSRAM, 16MB QSPI Flash)
+;   - ILI9341V 240x320 IPS TFT (4-wire SPI)
+;   - FT6336G Capacitive Touch (I2C)
+;   - ES8311 Audio Codec + FM8002E Amplifier
+;   - MicroSD Card (SDIO mode)
+;   - WS2812 RGB LED
+;   - Battery ADC with voltage divider
+;   - BOOT button (GPIO0)
+
+[env:Freenove-FNK0104AB]
+board = Freenove-FNK0104AB
+board_build.partitions = boards/Freenove-FNK0104AB/partitions_16Mb.csv
+build_src_filter = ${env.build_src_filter} +<../boards/Freenove-FNK0104AB>
+build_flags =
+	${env.build_flags}
+	-Iboards/Freenove-FNK0104AB
+	-Os
+	-DCORE_DEBUG_LEVEL=1
+	-DARDUINO_USB_CDC_ON_BOOT=1
+	-DDISABLE_ALL_LIBRARY_WARNINGS
+
+	; TFT SPI port for ESP32-S3
+	-DUSE_HSPI_PORT=1
+
+	; SD Card via SDIO (not SPI)
+	-DUSE_SD_MMC=1
+	-I$PROJECT_PACKAGES_DIR/framework-arduinoespressif32-libs/esp32s3/include/fatfs/src
+	-I$PROJECT_PACKAGES_DIR/framework-arduinoespressif32-libs/esp32s3/include/fatfs/vfs
+	-I$PROJECT_PACKAGES_DIR/framework-arduinoespressif32-libs/esp32s3/include/fatfs/diskio
+	-I$PROJECT_PACKAGES_DIR/framework-arduinoespressif32-libs/esp32s3/include/fatfs/**
+
+	; Touch screen
+	-DHAS_TOUCH=1
+
+	; Allow all GPIOs for IR/RF (user wires external modules)
+	-DALLOW_ALL_GPIO_FOR_IR_RF=1
+
+	; Redraw delay to improve menu navigation on this display
+	-DREDRAW_DELAY=1
+
+lib_deps =
+	${env.lib_deps}
+
+lib_ignore =
+	SD

boards/Freenove-FNK0104AB/connections.md

@@ -0,0 +1,49 @@
+# Freenove FNK0104B — Bruce wiring / pinouts
+
+Freenove FNK0104B (2.8" ILI9341 ESP32-S3, FT6336 capacitive touch) — the same
+hardware design as the ES3C28P. Display, touch, SD card, RGB LED and the BOOT
+button are on-board and already configured; you only wire the optional add-on
+radios/modules.
+
+## On-board (already configured — for reference)
+
+| Function | Pins |
+| --- | --- |
+| Display (ILI9341, SPI) | SCLK 12, MOSI 11, MISO 13, CS 10, DC 46, RST board-reset, BL 45 |
+| Touch (FT6336, I2C @0x38) | SDA 16, SCL 15, INT 17, RST 18 |
+| SD card | on-board slot (SDMMC) — just insert a microSD |
+| RGB LED (WS2812) | 40 |
+| Button (Select) | 0 (BOOT) |
+| Battery ADC | 8 (x2 divider) |
+
+## Free GPIOs (broken-out headers)
+
+| Header | Free GPIOs | Notes |
+| --- | --- | --- |
+| Expanded IO | 2, 3, 14, 21 | + 3V3 + GND |
+| UART | 43 (TX0), 44 (RX0) | free if the serial console is unused |
+| IIC | 16 (SDA), 15 (SCL) | shared touch/audio bus — for I2C add-ons |
+
+Power modules from the header **3V3** pin — CC1101 and nRF24 are 3.3V, not 5V-tolerant.
+
+## Sub-GHz / 2.4 GHz radios (SPI, shared bus)
+
+| Device | SCK | MOSI | MISO | CS | GDO0/CE |
+| --- | :---: | :---: | :---: | :---: | :---: |
+| CC1101 | 14 | 3 | 2 | 21 | 43 (GDO0) |
+| nRF24  | 14 | 3 | 2 | 44 | 3V3 * (CE) |
+
+- CC1101 and nRF24 share SCK/MOSI/MISO. Set pins in Bruce → Settings → Hardware/Pins.
+- **CC1101 GDO0** default collides with MISO (GPIO 2) — set GDO0 to **43** in the UI.
+- Both radios at once need 7 GPIOs but only 6 are free (4 Expanded IO + 2 UART).
+  Either tie nRF24 **CE to 3V3** ( * ) so Bruce drives it over SPI only, or use one
+  radio at a time and swap CS in the UI.
+- nRF24: add a decoupling cap across the module VCC/GND (10 uF; 100 uF for PA+LNA).
+
+## I2C add-ons (no extra pins)
+
+PN532 (NFC), DS3231 (RTC) and other I2C devices join the IIC header
+(SDA 16 / SCL 15) at their own addresses.
+
+> Match wiring by **GPIO number to the header silkscreen** (IO2/IO3/IO14/IO21,
+> TX/RX), not by connector position.