diff --git a/README.md b/README.md index 62e0c73..c1c7605 100644 --- a/README.md +++ b/README.md @@ -1,20 +1,24 @@ # CYD GY30 光照仪表盘 -ESP32 Cheap Yellow Display（ESP32-2432S028R）+ GY30（BH1750）+ LVGL 光照仪表盘。 +ESP32 Cheap Yellow Display + GY30（BH1750）+ LVGL 光照仪表盘。 -布局与交互参考同目录下的 [temperature](../temperature) / [sgp30test](../sgp30test)。 +默认 **2.8"**（`cyd_28r`）；可选 **3.5C**（`cyd_35r`）。布局与交互参考 [temperature](../temperature) / [sgp30test](../sgp30test)；板级约定见 [CYD_PROJECT_GUIDE.md](../CYD_PROJECT_GUIDE.md)。 ## 硬件 -| 项目 | 说明 | -|------|------| -| 板子 | CYD ESP32-2432S028R（2.8" ILI9341） | -| 传感器 | GY30 / BH1750（光照 lux） | -| SDA | **GPIO22** | -| SCL | **GPIO27** | -| 供电 | USB 5V；传感器接 **3.3V** | +| 项目 | 2.8"（默认 `cyd_28r`） | 3.5C（`cyd_35r`） | +|------|------------------------|-------------------| +| 板子 | ESP32-2432S028R（ILI9341） | ESP32-3248S035C（ST7796） | +| 触控 | XPT2046 SoftSPI | GT911 I2C（Wire1） | +| 背光 | **GPIO21** | **GPIO27** | +| GY30 SDA | **GPIO22** | **GPIO22**（不变） | +| GY30 SCL | **GPIO27** | **GPIO21**（2.8 的 27→21） | +| 供电 | USB 5V；传感器 **3.3V** | 同左 | -接线：`VCC→3.3V`，`GND→GND`，`SDA→GPIO22`，`SCL→GPIO27`。 +接线： + +- **2.8**：`VCC→3.3V`，`GND→GND`，`SDA→GPIO22`，`SCL→GPIO27` +- **3.5**：`VCC→3.3V`，`GND→GND`，`SDA→GPIO22`，`SCL→GPIO21`（勿接 27，那是背光） ## 功能 @@ -29,33 +33,42 @@ ESP32 Cheap Yellow Display（ESP32-2432S028R）+ GY30（BH1750）+ LVGL 光照 依赖 [PlatformIO](https://platformio.org/)。 ```bash +# 2.8" pio run -e cyd_28r -t upload -pio device monitor -b 115200 + +# 3.5" +pio run -e cyd_35r -t upload ``` ### 预编译固件 ```powershell -cd firmware\cyd_28r +cd firmware\cyd_28r # 或 cyd_35r .\flash.ps1 ``` -源码更新后重新打包：`.\firmware\export_from_build.ps1`。 +源码更新后重新打包： + +```powershell +.\firmware\export_from_build.ps1 # 2.8 +.\firmware\export_from_build.ps1 -Env cyd_35r # 3.5 +``` | 环境 | 适用 | |------|------| -| `cyd_28r` | 标准 ILI9341 CYD（默认） | +| `cyd_28r` | 标准 2.8" ILI9341 CYD（默认） | | `cyd_28r_inv` | 颜色反相 / 发白 | | `cyd_28_st7789` | USB-C 双口 / ST7789 变体 | +| `cyd_35r` | 3.5" ESP32-3248S035C（ST7796 + GT911） | ## 项目结构 ``` -platformio.ini # 板级与库依赖 -include/lv_conf.h # LVGL 配置 -src/main.cpp # 仪表盘主程序 -scripts/exclude_lvgl_asm.py # 排除 ESP32 不兼容的 LVGL ASM -firmware/ # 预编译固件 +platformio.ini # 板级与库依赖（含 cyd_35r） +include/lv_conf.h / touch.h +src/main.cpp / touch.cpp +scripts/exclude_lvgl_asm.py +firmware/cyd_28r/ firmware/cyd_35r/ README.md ``` @@ -63,5 +76,6 @@ README.md | 日期 | 说明 | |------|------| -| 2026-10-20 | 初版：参考 temperature/sgp30test，GY30(BH1750) SDA=GPIO22 / SCL=GPIO27，LUX/LEVEL 双表盘、场景条、趋势图 | +| 2026-10-20 | 初版：GY30(BH1750) SDA=GPIO22 / SCL=GPIO27，LUX/LEVEL 双表盘 | | 2026-10-20 | 增加 `meta.json` 与 `media/preview.html`，供 cydweb 本地目录展示 | +| 2026-10-25 | 按 CYD_PROJECT_GUIDE 修正 3.5：背光 GPIO27、GY30 SCL=GPIO21、GT911 Wire1、导出/刷写 `cyd_35r` | diff --git a/firmware/README.md b/firmware/README.md index 8a4de5b..9ec64b5 100644 --- a/firmware/README.md +++ b/firmware/README.md @@ -1,14 +1,16 @@ # 预编译固件（可随时刷写） -当前归档目录：[`cyd_28r/`](cyd_28r/) +| 目录 | 板子 | +|------|------| +| [`cyd_28r/`](cyd_28r/) | CYD ESP32-2432S028R（2.8" ILI9341），GY30 → SDA=GPIO22 / SCL=GPIO27 | +| [`cyd_35r/`](cyd_35r/) | CYD ESP32-3248S035C（3.5" ST7796 + GT911），GY30 → SDA=GPIO22 / SCL=GPIO21 | -对应板子：**CYD ESP32-2432S028R**（ILI9341），GY30 → SDA=GPIO22 / SCL=GPIO27。 -版本信息见 [`cyd_28r/VERSION.txt`](cyd_28r/VERSION.txt)。 +版本信息见各目录 `VERSION.txt`。 ## 直接刷写（无需重新编译） ```powershell -cd firmware\cyd_28r +cd firmware\cyd_28r # 或 cyd_35r .\flash.ps1 # 或指定端口 .\flash.ps1 -Port COM3 @@ -23,5 +25,6 @@ cd firmware\cyd_28r 在仓库根目录： ```powershell -.\firmware\export_from_build.ps1 +.\firmware\export_from_build.ps1 # 2.8 +.\firmware\export_from_build.ps1 -Env cyd_35r # 3.5 ``` diff --git a/firmware/cyd_35r/VERSION.txt b/firmware/cyd_35r/VERSION.txt new file mode 100644 index 0000000..21b922c --- /dev/null +++ b/firmware/cyd_35r/VERSION.txt @@ -0,0 +1,15 @@ +name: CYD gy30test (cyd_35r) +git: 604fa26 +date: 2026-10-25 +board: ESP32-3248S035 (ST7796) +flash_size: 4MB +offsets: + 0x1000 bootloader.bin + 0x8000 partitions.bin + 0xe000 boot_app0.bin + 0x10000 firmware.bin +sha256: + bootloader.bin 3D234A7471F67B013686DABD4DEE7C1FA915C9928463616A94BC9297ACF1ABF8 + boot_app0.bin F94C5D786A7A8FAB06AC5D10E33BF37711A6697636DC037559EA19CC410A17F0 + firmware.bin 531415EDA642DD3A6E8CAA0B6D1F42E3EF653C28BC8DC19A359FE45E0BFD3463 + partitions.bin 0A8B5720E7B77FF11F1462458C3A509DEE79224E5279898F26D6A2E3AE0517B7 diff --git a/firmware/cyd_35r/boot_app0.bin b/firmware/cyd_35r/boot_app0.bin new file mode 100644 index 0000000..13562ca Binary files /dev/null and b/firmware/cyd_35r/boot_app0.bin differ diff --git a/firmware/cyd_35r/bootloader.bin b/firmware/cyd_35r/bootloader.bin new file mode 100644 index 0000000..d592359 Binary files /dev/null and b/firmware/cyd_35r/bootloader.bin differ diff --git a/firmware/cyd_35r/firmware.bin b/firmware/cyd_35r/firmware.bin new file mode 100644 index 0000000..40d4419 Binary files /dev/null and b/firmware/cyd_35r/firmware.bin differ diff --git a/firmware/cyd_35r/flash.bat b/firmware/cyd_35r/flash.bat new file mode 100644 index 0000000..bf983b3 --- /dev/null +++ b/firmware/cyd_35r/flash.bat @@ -0,0 +1,5 @@ +@echo off +setlocal +cd /d "%~dp0" +powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0flash.ps1" %* +exit /b %ERRORLEVEL% diff --git a/firmware/cyd_35r/flash.ps1 b/firmware/cyd_35r/flash.ps1 new file mode 100644 index 0000000..31d20f5 --- /dev/null +++ b/firmware/cyd_35r/flash.ps1 @@ -0,0 +1,85 @@ +# Flash archived CYD climate firmware (no rebuild needed) +# Usage: +# .\flash.ps1 +# .\flash.ps1 -Port COM5 +# .\flash.ps1 -Port COM5 -Baud 460800 + +param( + [string]$Port = "", + [int]$Baud = 921600 +) + +$ErrorActionPreference = "Stop" +$here = Split-Path -Parent $MyInvocation.MyCommand.Path +Set-Location $here + +function Find-Esptool { + $pio = Get-Command pio -ErrorAction SilentlyContinue + if ($pio) { + $pkg = Join-Path $env:USERPROFILE ".platformio\packages\tool-esptoolpy\esptool.py" + if (Test-Path $pkg) { return @{ Kind = "py"; Path = $pkg } } + } + $py = Get-Command python -ErrorAction SilentlyContinue + if ($py) { + try { + & python -c "import esptool" 2>$null + if ($LASTEXITCODE -eq 0) { return @{ Kind = "mod"; Path = "esptool" } } + } catch {} + } + $esp = Get-Command esptool.py -ErrorAction SilentlyContinue + if ($esp) { return @{ Kind = "py"; Path = $esp.Source } } + return $null +} + +if (-not $Port) { + $ports = @() + try { + Add-Type -AssemblyName System.IO.Ports -ErrorAction SilentlyContinue | Out-Null + $ports = [System.IO.Ports.SerialPort]::GetPortNames() | Sort-Object + } catch {} + if (-not $ports -or $ports.Count -eq 0) { + $ports = Get-CimInstance Win32_SerialPort -ErrorAction SilentlyContinue | + Select-Object -ExpandProperty DeviceID | Sort-Object + } + if (-not $ports -or $ports.Count -eq 0) { + Write-Error "No serial ports found. Plug in the CYD USB cable, then retry with -Port COMx" + } + if ($ports.Count -eq 1) { + $Port = $ports[0] + } else { + Write-Host "Available ports: $($ports -join ', ')" + $Port = $ports[-1] + Write-Host "Using last port: $Port (override with -Port)" + } +} + +$tool = Find-Esptool +if (-not $tool) { + Write-Error "esptool not found. Install PlatformIO (`pio`) or: pip install esptool" +} + +$argsCommon = @( + "--chip", "esp32", + "--port", $Port, + "--baud", "$Baud", + "--before", "default_reset", + "--after", "hard_reset", + "write_flash", "-z", + "--flash_mode", "dio", + "--flash_freq", "40m", + "--flash_size", "4MB", + "0x1000", "bootloader.bin", + "0x8000", "partitions.bin", + "0xe000", "boot_app0.bin", + "0x10000", "firmware.bin" +) + +Write-Host "Flashing $here -> $Port @ $Baud" +if ($tool.Kind -eq "mod") { + & python -m esptool @argsCommon +} else { + & python $tool.Path @argsCommon +} +if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE } +Write-Host "Done. Open serial monitor at 115200 if needed." + diff --git a/firmware/cyd_35r/media/media/preview.html b/firmware/cyd_35r/media/media/preview.html new file mode 100644 index 0000000..5c7c6e6 --- /dev/null +++ b/firmware/cyd_35r/media/media/preview.html @@ -0,0 +1,82 @@ + + + + + +CLIMATE + + + +
+ +
+
CLIMATEup 01:24 + OK
+
+
TEMP
+
24.6C
22.1 / 26.0
+
HUM
+
48%
41 / 55
+
+
+
COMFORT
+
DHT11 · GPIO22
+
+ + +
+
+
+ + +
+ + diff --git a/firmware/cyd_35r/media/preview.html b/firmware/cyd_35r/media/preview.html new file mode 100644 index 0000000..fdd0e06 --- /dev/null +++ b/firmware/cyd_35r/media/preview.html @@ -0,0 +1,66 @@ + + + + +LIGHT + + + +
+ +
+
LIGHTup 02:18 + OK
+
+
LUX
+
186 lx
42 / 420
+
LEVEL
+
58 %
EV 7.5
+
+
+
INDOOR
+
GY30 BH1750
SDA22 · SCL27
+
+ + +
+
+
+ +
+ + diff --git a/firmware/cyd_35r/meta.json b/firmware/cyd_35r/meta.json new file mode 100644 index 0000000..36fcf23 --- /dev/null +++ b/firmware/cyd_35r/meta.json @@ -0,0 +1,15 @@ +{ + "boardId": "esp32-3248s035", + "name": "CYD GY30 light dashboard (3.5\")", + "summary": "Lux \u0026 perceived-level gauges with scene bar and chart", + "description": "GY30 / BH1750 on SDA=GPIO22 / SCL=GPIO21 (3.5C). Dual arcs for LUX / LEVEL%, scene label, EV, live sparkline. Tap cycles backlight; hold resets min/max.", + "tags": [ + "light", + "gy30", + "bh1750", + "lux" + ], + "media": { + "preview": "media/preview.html" + } +} diff --git a/firmware/cyd_35r/partitions.bin b/firmware/cyd_35r/partitions.bin new file mode 100644 index 0000000..21800fa Binary files /dev/null and b/firmware/cyd_35r/partitions.bin differ diff --git a/firmware/export_from_build.ps1 b/firmware/export_from_build.ps1 index 02d243c..a728bb3 100644 --- a/firmware/export_from_build.ps1 +++ b/firmware/export_from_build.ps1 @@ -73,8 +73,8 @@ if (Test-Path $metaPath) { try { $meta = Get-Content $metaPath -Raw | ConvertFrom-Json $meta.boardId = $boardIdHint - if ($Env -eq "cyd_35r" -and $meta.name -notmatch "3\.5") { - $meta.name = ($meta.name -replace "\s*$","") + " (3.5\")" + if ($Env -eq "cyd_35r" -and $meta.name -notmatch '3\.5') { + $meta.name = ($meta.name -replace '\s*$','') + ' (3.5")' } $meta | ConvertTo-Json -Depth 8 | Set-Content -Encoding utf8 $metaPath } catch { diff --git a/include/lv_conf.h b/include/lv_conf.h index 6c23cfa..189563c 100644 --- a/include/lv_conf.h +++ b/include/lv_conf.h @@ -5,7 +5,9 @@ #define LV_COLOR_DEPTH 16 +#ifndef LV_MEM_SIZE #define LV_MEM_SIZE (48 * 1024U) +#endif #define LV_DEF_REFR_PERIOD 16 #define LV_DPI_DEF 130 diff --git a/include/touch.h b/include/touch.h new file mode 100644 index 0000000..788ec0f --- /dev/null +++ b/include/touch.h @@ -0,0 +1,6 @@ +#pragma once + +#include + +void touch_init(); +void touch_read_cb(lv_indev_t *indev, lv_indev_data_t *data); diff --git a/platformio.ini b/platformio.ini index 45751ed..794d5e9 100644 --- a/platformio.ini +++ b/platformio.ini @@ -1,6 +1,6 @@ -; CYD ESP32-2432S028R ?LVGL GY30(BH1750) 光照仪表? -; GY30 SDA -> GPIO22, SCL -> GPIO27 - +; CYD — LVGL GY30(BH1750) light dashboard +; 2.8": GY30 SDA=GPIO22 SCL=GPIO27, TFT_BL=21 +; 3.5C: GY30 SDA=GPIO22 SCL=GPIO21, TFT_BL=27 (GT911 on Wire1 33/32) [platformio] default_envs = cyd_28r @@ -46,12 +46,12 @@ build_flags = -D LV_CONF_INCLUDE_SIMPLE=1 -I include -; 标准 CYD 2.8" 电阻?(ILI9341) +; 标准 CYD 2.8" 电阻�?(ILI9341) [env:cyd_28r] build_flags = ${env.build_flags} -; 颜色反相版本（若画面色偏/发白可改用此环境? +; 颜色反相版本（若画面色偏/发白可改用此环境�? [env:cyd_28r_inv] build_flags = ${env.build_flags} @@ -66,18 +66,28 @@ build_flags = -D TFT_RGB_ORDER=TFT_BGR -D TFT_INVERSION_ON=1 -; Optional 3.5" CYD ESP32-3248S035 (ST7796 resistive). Default remains cyd_28r. +; Optional 3.5" CYD ESP32-3248S035C (ST7796 + GT911 capacitive). Default remains cyd_28r. ; Build: pio run -e cyd_35r +; Keep TOUCH_CS=-1 — GPIO33 is GT911 SDA, not resistive touch CS. +; TFT_BL=GPIO27 (not 21 — 21 is GT911 INT / GY30 SCL). GT911 uses Wire1. [env:cyd_35r] +lib_deps = + lvgl/lvgl@9.2.2 + bodmer/TFT_eSPI@2.5.43 + claws/BH1750@^1.3.0 build_flags = ${env.build_flags} - -U ILI9341_2_DRIVER - -D ST7796_DRIVER=1 - -U TFT_WIDTH - -U TFT_HEIGHT - -D TFT_WIDTH=320 - -D TFT_HEIGHT=480 - -U TFT_BL - -D TFT_BL=27 - -D CYD_BOARD_3248S035=1 + -UILI9341_2_DRIVER + -DST7796_DRIVER=1 + -UTFT_WIDTH + -UTFT_HEIGHT + -DTFT_WIDTH=320 + -DTFT_HEIGHT=480 + -UTFT_BL + -DTFT_BL=27 + -DCYD_BOARD_3248S035=1 + -DSUPPORT_TRANSACTIONS + -DTFT_RGB_ORDER=TFT_BGR + -ULV_MEM_SIZE + -DLV_MEM_SIZE=32768 diff --git a/src/main.cpp b/src/main.cpp index a593fcb..4d2d5d2 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -1,30 +1,26 @@ /** - * CYD ESP32-2432S028R — LVGL GY30(BH1750) 光照仪表盘 - * GY30 SDA -> GPIO22, SCL -> GPIO27 + * CYD — LVGL GY30(BH1750) 光照仪表盘 + * 2.8": SDA=GPIO22 SCL=GPIO27, TFT_BL=GPIO21 + * 3.5C: SDA=GPIO22 SCL=GPIO21, TFT_BL=GPIO27 (GT911 INT=21, polled; Wire1 for touch) */ #include #include #include #include -#include #include #include +#include "touch.h" #define I2C_SDA 22 -#define I2C_SCL 27 #if defined(CYD_BOARD_3248S035) +#define I2C_SCL 21 #define TFT_BL_PIN 27 #else +#define I2C_SCL 27 #define TFT_BL_PIN 21 #endif -#define XPT2046_IRQ 36 -#define XPT2046_MOSI 32 -#define XPT2046_MISO 39 -#define XPT2046_CLK 25 -#define XPT2046_CS 33 - #if defined(CYD_BOARD_3248S035) #define SCREEN_WIDTH 480 #define SCREEN_HEIGHT 320 @@ -37,7 +33,11 @@ #define EMA_ALPHA 0.35f #define HISTORY_LEN 48 #define LUX_ARC_MAX 1000 +#if defined(CYD_BOARD_3248S035) +#define DRAW_BUF_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT / 20 * (LV_COLOR_DEPTH / 8)) +#else #define DRAW_BUF_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT / 10 * (LV_COLOR_DEPTH / 8)) +#endif /* Layout grid — every region has exclusive space, no overlaps */ #if defined(CYD_BOARD_3248S035) @@ -78,8 +78,6 @@ static const lv_color_t COL_BAD = lv_color_hex(0xE05A5A); static const lv_color_t COL_ARC_BG = lv_color_hex(0x243247); static const lv_color_t COL_CHART_BG = lv_color_hex(0x0E1622); -SPIClass touchscreenSPI = SPIClass(VSPI); -XPT2046_Touchscreen touchscreen(XPT2046_CS, XPT2046_IRQ); BH1750 lightMeter; static uint32_t draw_buf[DRAW_BUF_SIZE / 4]; @@ -190,32 +188,26 @@ static void reset_minmax(void) { } static void touchscreen_read(lv_indev_t *indev, lv_indev_data_t *data) { - LV_UNUSED(indev); static bool was_pressed = false; static uint32_t press_ms = 0; - if (touchscreen.tirqTouched() && touchscreen.touched()) { - TS_Point p = touchscreen.getPoint(); - data->point.x = map(p.y, 240, 3800, 1, SCREEN_WIDTH); - data->point.y = map(p.x, 200, 3700, SCREEN_HEIGHT, 1); - data->state = LV_INDEV_STATE_PRESSED; + touch_read_cb(indev, data); + + if (data->state == LV_INDEV_STATE_PRESSED) { if (!was_pressed) { was_pressed = true; press_ms = millis(); } - } else { - data->state = LV_INDEV_STATE_RELEASED; - if (was_pressed) { - was_pressed = false; - uint32_t held = millis() - press_ms; - if (held >= 700) { - reset_minmax(); - } else if (held < 400) { - set_backlight((bright_level + 1) & 0x03); - char buf[20]; - lv_snprintf(buf, sizeof(buf), "brightness %u/3", (unsigned)bright_level); - show_hint(buf, 900); - } + } else if (was_pressed) { + was_pressed = false; + uint32_t held = millis() - press_ms; + if (held >= 700) { + reset_minmax(); + } else if (held < 400) { + set_backlight((bright_level + 1) & 0x03); + char buf[20]; + lv_snprintf(buf, sizeof(buf), "brightness %u/3", (unsigned)bright_level); + show_hint(buf, 900); } } } @@ -572,26 +564,26 @@ void setup() { set_backlight(2); Serial.println("CYD LVGL GY30 Light Dashboard"); - Serial.printf("LVGL %d.%d.%d SDA=GPIO%d SCL=GPIO%d\n", + Serial.printf("LVGL %d.%d.%d BL=GPIO%d SDA=GPIO%d SCL=GPIO%d\n", lv_version_major(), lv_version_minor(), lv_version_patch(), - I2C_SDA, I2C_SCL); + TFT_BL_PIN, I2C_SDA, I2C_SCL); + + /* 3.5: GT911 reset briefly drives INT(GPIO21); leave INT as INPUT, then take Wire for GY30. */ + touch_init(); Wire.begin(I2C_SDA, I2C_SCL); Wire.setClock(100000); if (!lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE)) { - Serial.println("GY30/BH1750 not found — check wiring (SDA22/SCL27)"); + Serial.printf("GY30/BH1750 not found — check wiring (SDA%d/SCL%d)\n", + I2C_SDA, I2C_SCL); } else { Serial.println("GY30/BH1750 OK"); } lv_init(); - touchscreenSPI.begin(XPT2046_CLK, XPT2046_MISO, XPT2046_MOSI, XPT2046_CS); - touchscreen.begin(touchscreenSPI); - touchscreen.setRotation(2); - - #if defined(CYD_BOARD_3248S035) +#if defined(CYD_BOARD_3248S035) lv_display_t *disp = lv_tft_espi_create(320, 480, draw_buf, sizeof(draw_buf)); #else lv_display_t *disp = lv_tft_espi_create(240, 320, draw_buf, sizeof(draw_buf)); @@ -601,6 +593,7 @@ void setup() { lv_indev_t *indev = lv_indev_create(); lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER); lv_indev_set_read_cb(indev, touchscreen_read); + lv_indev_set_display(indev, disp); create_ui(); delay(200); diff --git a/src/touch.cpp b/src/touch.cpp new file mode 100644 index 0000000..c5f4453 --- /dev/null +++ b/src/touch.cpp @@ -0,0 +1,196 @@ +#include "touch.h" + +#include + +/** + * 2.8": XPT2046 resistive SoftSPI bus (CS33). + * 3.5C (3248S035C): GT911 capacitive on Wire1 SDA33/SCL32/INT21/RST25. + * Feed coords are always native panel 320x480 for LVGL ROTATION_270. + * Wire1 leaves Wire free for GY30 (SDA22 / SCL21). TFT_BL is GPIO27. + * After address select, INT returns to INPUT so GPIO21 can be GY30 SCL. + */ + +static int16_t clampi(int32_t v, int32_t lo, int32_t hi) { + if (v < lo) return (int16_t)lo; + if (v > hi) return (int16_t)hi; + return (int16_t)v; +} + +#if defined(CYD_BOARD_3248S035) + +#include + +/* Native panel size — not UI landscape SCREEN_* (480x320). */ +static constexpr int16_t PANEL_W = 320; +static constexpr int16_t PANEL_H = 480; + +#define CYD_GT911_SDA 33 +#define CYD_GT911_SCL 32 +#define CYD_GT911_INT 21 +#define CYD_GT911_RST 25 + +/* Minimal GT911 — no config rewrite (TAMC setResolution can hang Wire). */ +static uint8_t s_gt_addr = 0x5D; +static constexpr uint16_t GT_POINT_INFO = 0x814E; +static constexpr uint16_t GT_POINT_1 = 0x814F; + +static bool gt_write8(uint16_t reg, uint8_t val) { + Wire1.beginTransmission(s_gt_addr); + Wire1.write((uint8_t)(reg >> 8)); + Wire1.write((uint8_t)(reg & 0xFF)); + Wire1.write(val); + return Wire1.endTransmission() == 0; +} + +static bool gt_read(uint16_t reg, uint8_t *buf, uint8_t len) { + Wire1.beginTransmission(s_gt_addr); + Wire1.write((uint8_t)(reg >> 8)); + Wire1.write((uint8_t)(reg & 0xFF)); + if (Wire1.endTransmission(false) != 0) { + return false; + } + const uint8_t n = Wire1.requestFrom(s_gt_addr, len); + if (n != len) { + return false; + } + for (uint8_t i = 0; i < len; i++) { + buf[i] = Wire1.read(); + } + return true; +} + +static bool gt_probe(uint8_t addr) { + Wire1.beginTransmission(addr); + return Wire1.endTransmission() == 0; +} + +/* TAMC-compatible address select: INT low => 0x5D, INT high => 0x14 */ +static void gt_hw_reset(bool addr_0x14) { + pinMode(CYD_GT911_INT, OUTPUT); + pinMode(CYD_GT911_RST, OUTPUT); + digitalWrite(CYD_GT911_INT, LOW); + digitalWrite(CYD_GT911_RST, LOW); + delay(10); + digitalWrite(CYD_GT911_INT, addr_0x14 ? HIGH : LOW); + delay(1); + digitalWrite(CYD_GT911_RST, HIGH); + delay(5); + digitalWrite(CYD_GT911_INT, LOW); + delay(50); + /* Backlight is GPIO27 — leave INT as input so GPIO21 can be GY30 SCL. */ + pinMode(CYD_GT911_INT, INPUT); + delay(50); +} + +static bool gt_find_addr() { + for (uint8_t a : {uint8_t(0x5D), uint8_t(0x14)}) { + if (gt_probe(a)) { + s_gt_addr = a; + return true; + } + } + return false; +} + +void touch_init() { + Serial.println("Touch: GT911 I2C capacitive (3.5C) minimal Wire1"); + Wire1.begin(CYD_GT911_SDA, CYD_GT911_SCL); + Wire1.setClock(100000); +#if defined(WIRE_HAS_TIMEOUT) || defined(ESP32) + Wire1.setTimeOut(50); +#endif + + if (!gt_find_addr()) { + Serial.println("GT911 not found — hw reset 0x5D"); + gt_hw_reset(false); + if (!gt_find_addr()) { + Serial.println("GT911 not found — hw reset 0x14"); + gt_hw_reset(true); + gt_find_addr(); + } + } + + /* Ensure INT is free for GY30 SCL even if probe skipped hw reset. */ + pinMode(CYD_GT911_INT, INPUT); + + Serial.printf("GT911 probe 0x5D=%s 0x14=%s using=0x%02X\n", + gt_probe(0x5D) ? "OK" : "no", gt_probe(0x14) ? "OK" : "no", + s_gt_addr); + Serial.printf("GT911 SDA=%d SCL=%d INT=%d RST=%d\n", CYD_GT911_SDA, + CYD_GT911_SCL, CYD_GT911_INT, CYD_GT911_RST); +} + +void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) { + uint8_t info = 0; + + if (!gt_read(GT_POINT_INFO, &info, 1)) { + data->state = LV_INDEV_STATE_RELEASED; + return; + } + + const uint8_t touches = info & 0x0F; + const bool buffered = (info & 0x80) != 0; + + if (!buffered || touches == 0) { + if (buffered) { + gt_write8(GT_POINT_INFO, 0); + } + data->state = LV_INDEV_STATE_RELEASED; + return; + } + + uint8_t pt[7]; + if (!gt_read(GT_POINT_1, pt, 7)) { + gt_write8(GT_POINT_INFO, 0); + data->state = LV_INDEV_STATE_RELEASED; + return; + } + gt_write8(GT_POINT_INFO, 0); + + const int16_t raw_x = (int16_t)(pt[1] | (pt[2] << 8)); + const int16_t raw_y = (int16_t)(pt[3] | (pt[4] << 8)); + + /* Native 320x480 → LVGL 270. */ + const int16_t nx = clampi(raw_x, 0, PANEL_W - 1); + const int16_t ny = clampi(raw_y, 0, PANEL_H - 1); + data->point.x = (int16_t)((PANEL_W - 1) - nx); + data->point.y = (int16_t)((PANEL_H - 1) - ny); + data->state = LV_INDEV_STATE_PRESSED; +} + +#else + +#include +#include + +#define XPT2046_IRQ 36 +#define XPT2046_MOSI 32 +#define XPT2046_MISO 39 +#define XPT2046_CLK 25 +#define XPT2046_CS 33 + +static constexpr int16_t UI_W = 320; +static constexpr int16_t UI_H = 240; + +static SPIClass touchscreenSPI = SPIClass(VSPI); +static XPT2046_Touchscreen touchscreen(XPT2046_CS, XPT2046_IRQ); + +void touch_init() { + touchscreenSPI.begin(XPT2046_CLK, XPT2046_MISO, XPT2046_MOSI, XPT2046_CS); + touchscreen.begin(touchscreenSPI); + touchscreen.setRotation(2); + Serial.println("Touch: XPT2046 resistive (2.8)"); +} + +void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) { + if (touchscreen.tirqTouched() && touchscreen.touched()) { + TS_Point p = touchscreen.getPoint(); + data->point.x = map(p.y, 240, 3800, 1, UI_W); + data->point.y = map(p.x, 200, 3700, UI_H, 1); + data->state = LV_INDEV_STATE_PRESSED; + } else { + data->state = LV_INDEV_STATE_RELEASED; + } +} + +#endif