From 456edbd46fe8603992155a42b0f353930319874a Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.de>
Date: Fri, 9 May 2025 20:09:18 +0200
Subject: [PATCH] Initial commit

---
 .gitignore         |  8 +++++
 CMakeLists.txt     |  3 ++
 partitions.csv     |  6 ++++
 platformio.ini     | 53 +++++++++++++++++++++++++++++++++
 src/CMakeLists.txt |  3 ++
 src/main.cpp       | 73 ++++++++++++++++++++++++++++++++++++++++++++++
 src/main.h         | 15 ++++++++++
 7 files changed, 161 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 CMakeLists.txt
 create mode 100644 partitions.csv
 create mode 100644 platformio.ini
 create mode 100644 src/CMakeLists.txt
 create mode 100644 src/main.cpp
 create mode 100644 src/main.h

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6801c95
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+.pio
+.piolibdeps
+.vscode/.browse.c_cpp.db*
+.vscode/*.json
+build/
+setup/firmware/*/*.bin
+!sdkconfig.defaults
+sdkconfig.*
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..17afb16
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.16.0)
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(knobby)
diff --git a/partitions.csv b/partitions.csv
new file mode 100644
index 0000000..0efb94d
--- /dev/null
+++ b/partitions.csv
@@ -0,0 +1,6 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x1D0000,
+app1,     app,  ota_1,   0x1E0000,0x1D0000,
+spiffs,   data, spiffs,  0x3B0000,0x50000,
diff --git a/platformio.ini b/platformio.ini
new file mode 100644
index 0000000..0d07b08
--- /dev/null
+++ b/platformio.ini
@@ -0,0 +1,53 @@
+[platformio]
+default_envs = knobby
+
+[env]
+board = ttgo-t1
+framework = arduino, espidf
+platform = espressif32 @ 6.7.0
+platform_packages =
+  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#2.0.17
+board_build.flash_mode = dio
+board_build.partitions = partitions.csv
+monitor_filters = default, esp32_exception_decoder
+monitor_speed = 115200
+upload_protocol = esptool
+upload_speed = 921600
+
+[common]
+build_flags =
+  -Os
+  -DARDUINO_ARCH_ESP32=y
+  -DARDUINO=100
+  -DESP32=1
+  -DSMOOTH_FONT=1
+  -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_INFO
+  !echo "-DGIT_VERSION='\""$(git describe --match="" --dirty --always)"\"'"
+  -DPLATFORMIO_ENV='"$PIOENV"'
+  -Wno-error=unknown-pragmas
+lib_deps =
+  TFT_eSPI=https://github.com/quadule/TFT_eSPI.git#066c4adcd95679da94e87221c30ab973048d71e4
+  ricmoo/QRCode@^0.0.1
+  dlloydev/Toggle@^3.1.8
+
+[env:knobby]
+build_flags =
+  ${common.build_flags}
+  -DARDUINO_WIFI_DISABLED
+  -DUSER_SETUP_LOADED=1
+  -DSPI_FREQUENCY=40000000
+  -DSPI_READ_FREQUENCY=6000000
+  -DST7789_DRIVER=1
+  -DTFT_WIDTH=135
+  -DTFT_HEIGHT=240
+  -DCGRAM_OFFSET=1
+  -DTFT_MISO=-1
+  -DTFT_MOSI=19
+  -DTFT_SCLK=18
+  -DTFT_CS=5
+  -DTFT_DC=16
+  -DTFT_RST=23
+  -DTFT_BL=4
+lib_deps =
+  ${common.lib_deps}
+
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..28e2b97
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,3 @@
+FILE(GLOB_RECURSE app_sources ${CMAKE_SOURCE_DIR}/src/*.*)
+
+idf_component_register(SRCS ${app_sources})
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..4928222
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,73 @@
+#include <Arduino.h>
+#include <base64.h>
+#include <qrcode.h>
+#include <esp_adc_cal.h>
+#include <esp_pm.h>
+#include <Toggle.h>
+#include <esp_system.h>
+#include <esp_task_wdt.h>
+#include <mbedtls/md.h>
+#include <SPIFFS.h>
+#include <StreamString.h>
+#include <time.h>
+
+#include "main.h"
+
+size_t qr_w = 0;
+uint16_t qr_img[128*128];
+
+int qr_version = 4;
+int qr_scale = 3;
+Toggle tog_a, tog_b;
+
+void setup() {
+    Serial.begin(115200);
+
+    ledcSetup(backlightChannel, 12000, 8);
+    ledcAttachPin(TFT_BL, backlightChannel);
+    ledcWrite(backlightChannel, 255);
+    tft.init();
+    tft.fillScreen(TFT_BLACK);
+
+    tog_a(0);
+    tog_b(35);
+
+    SPIFFS.begin(true);
+
+    tft.fillScreen(TFT_RED);
+
+    QRCode qrcode;
+    uint8_t *qr_buf = new uint8_t[qrcode_getBufferSize(qr_version)];
+    qrcode_initText(&qrcode, qr_buf, qr_version, ECC_LOW, "otpauth://totp/Example:alice@google.com?secret=JBSWY3DPEHPK3PXP&issuer=Example");
+    qr_w = qrcode.size * qr_scale;
+
+    for (int y=0; y<qrcode.size; y++) {
+        for (int sy=0; sy<qr_scale; sy++) {
+            for(int x=0; x<qrcode.size; x++) {
+                for (int sx=0; sx<qr_scale; sx++) {
+                    qr_img[x*qr_scale + sx +qr_w*(y*qr_scale + sy)] = qrcode_getModule(&qrcode, x, y) ? TFT_BLACK : TFT_WHITE;
+                }
+            }
+        }
+    }
+
+    delete qr_buf;
+
+    tft.fillScreen(TFT_BLACK);
+    tft.startWrite();
+    tft.pushImage((TFT_WIDTH - qr_w)/2, (TFT_HEIGHT - qr_w)/2, qr_w, qr_w, (uint16_t*)qr_img);
+    tft.endWrite();
+}
+
+int flag = 0;
+void loop() {
+    flag = !flag;
+    /*
+    tft.fillScreen(flag ? TFT_RED : TFT_BLUE);
+    tft.startWrite();
+    tft.pushImage(0, 0, qr_w, qr_w, (uint16_t*)qr_img);
+    tft.endWrite();
+    */
+    delay(1000);
+}
+
diff --git a/src/main.h b/src/main.h
new file mode 100644
index 0000000..c8a12dc
--- /dev/null
+++ b/src/main.h
@@ -0,0 +1,15 @@
+#include "sdkconfig.h"
+#include <Arduino.h>
+
+#include <HardwareSerial.h>
+#include <list>
+#include <TFT_eSPI.h>
+
+TFT_eSPI tft = TFT_eSPI(TFT_WIDTH, TFT_HEIGHT);
+
+const uint8_t backlightChannel = 4;
+
+// Events
+void setup();
+void loop();
+