first upload

include/GxEPD2_selection_check.h

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+// Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
+// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
+//
+// Display Library based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+// Supporting Arduino Forum Topics:
+// Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0
+// Good Display ePaper for Arduino: https://forum.arduino.cc/index.php?topic=436411.0
+
+#define GxEPD2_102_IS_BW true
+#define GxEPD2_150_BN_IS_BW true
+#define GxEPD2_154_IS_BW true
+#define GxEPD2_154_D67_IS_BW true
+#define GxEPD2_154_T8_IS_BW true
+#define GxEPD2_154_M09_IS_BW true
+#define GxEPD2_154_M10_IS_BW true
+#define GxEPD2_154_GDEY0154D67_IS_BW true
+#define GxEPD2_213_IS_BW true
+#define GxEPD2_213_B72_IS_BW true
+#define GxEPD2_213_B73_IS_BW true
+#define GxEPD2_213_B74_IS_BW true
+#define GxEPD2_213_flex_IS_BW true
+#define GxEPD2_213_M21_IS_BW true
+#define GxEPD2_213_T5D_IS_BW true
+#define GxEPD2_213_BN_IS_BW true
+#define GxEPD2_213_GDEY0213B74_IS_BW true
+#define GxEPD2_260_IS_BW true
+#define GxEPD2_260_M01_IS_BW true
+#define GxEPD2_266_BN_IS_BW true
+#define GxEPD2_266_GDEY0266T90_IS_BW true
+#define GxEPD2_270_IS_BW true
+#define GxEPD2_270_GDEY027T91_IS_BW true
+#define GxEPD2_290_IS_BW true
+#define GxEPD2_290_T5_IS_BW true
+#define GxEPD2_290_T5D_IS_BW true
+#define GxEPD2_290_I6FD_IS_BW true
+#define GxEPD2_290_T94_IS_BW true
+#define GxEPD2_290_T94_V2_IS_BW true
+#define GxEPD2_290_BS_IS_BW true
+#define GxEPD2_290_M06_IS_BW true
+#define GxEPD2_290_GDEY029T94_IS_BW true
+#define GxEPD2_371_IS_BW true
+#define GxEPD2_370_TC1_IS_BW true
+#define GxEPD2_420_IS_BW true
+#define GxEPD2_420_M01_IS_BW true
+#define GxEPD2_420_GDEY042T91_IS_BW true
+#define GxEPD2_583_IS_BW true
+#define GxEPD2_583_T8_IS_BW true
+#define GxEPD2_583_GDEQ0583T31_IS_BW true
+#define GxEPD2_750_IS_BW true
+#define GxEPD2_750_T7_IS_BW true
+#define GxEPD2_750_YT7_IS_BW true
+#define GxEPD2_1160_T91_IS_BW true
+#define GxEPD2_1248_IS_BW true
+#define GxEPD2_it60_IS_BW true
+#define GxEPD2_it60_1448x1072_IS_BW true
+#define GxEPD2_it78_1872x1404_IS_BW true
+#define GxEPD2_it103_1872x1404_IS_BW true
+// 3-color e-papers
+#define GxEPD2_154c_IS_3C true
+#define GxEPD2_154_Z90c_IS_3C true
+#define GxEPD2_213c_IS_3C true
+#define GxEPD2_213_Z19c_IS_3C true
+#define GxEPD2_213_Z98c_IS_3C true
+#define GxEPD2_266c_IS_3C true
+#define GxEPD2_270c_IS_3C true
+#define GxEPD2_290c_IS_3C true
+#define GxEPD2_290_Z13c_IS_3C true
+#define GxEPD2_290_C90c_IS_3C true
+#define GxEPD2_420c_IS_3C true
+#define GxEPD2_420c_Z21_IS_3C true
+#define GxEPD2_583c_IS_3C true
+#define GxEPD2_583c_Z83_IS_3C true
+#define GxEPD2_750c_IS_3C true
+#define GxEPD2_750c_Z08_IS_3C true
+#define GxEPD2_750c_Z90_IS_3C true
+#define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
+// 7-color e-paper
+#define GxEPD2_565c_IS_7C true
+#define GxEPD2_730c_GDEY073D46_IS_7C true
+
+#if defined(GxEPD2_DISPLAY_CLASS) && defined(GxEPD2_DRIVER_CLASS)
+#define IS_GxEPD2_DRIVER(c, x) (c##x)
+#define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
+#define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
+#define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
+#if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
+#error "GxEPD2_BW used with 3-color driver class"
+#endif
+#if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
+#error "GxEPD2_3C used with b/w driver class"
+#endif
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#endif
+
+#endif

include/GxEPD2_wiring_examples.h

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+// Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
+// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
+//
+// Display Library based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+// Supporting Arduino Forum Topics:
+// Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0
+// Good Display ePaper for Arduino: https://forum.arduino.cc/index.php?topic=436411.0
+
+// mapping suggestion from Waveshare SPI e-Paper to Wemos D1 mini
+// BUSY -> D2, RST -> D4, DC -> D3, CS -> D8, CLK -> D5, DIN -> D7, GND -> GND, 3.3V -> 3.3V
+// NOTE: connect 3.3k pull-down from D8 to GND if your board or shield has level converters
+// NOTE for ESP8266: using SS (GPIO15) for CS may cause boot mode problems, use different pin in case, or 4k7 pull-down
+// NOTE: connect 1k pull-up from D4 (RST) to 3.3V if your board or shield has the "clever" reset circuit, or use a different pin
+
+// mapping suggestion from Waveshare SPI e-Paper to generic ESP8266
+// BUSY -> GPIO4, RST -> GPIO2, DC -> GPIO0, CS -> GPIO15, CLK -> GPIO14, DIN -> GPIO13, GND -> GND, 3.3V -> 3.3V
+// NOTE: connect 3.3k pull-down from GPIO15 to GND if your board or shield has level converters
+// NOTE for ESP8266: using SS (GPIO15) for CS may cause boot mode problems, use different pin in case, or 3.3k pull-down
+// NOTE: connect 1k pull-up from GPIO2 (RST) to 3.3V if your board or shield has the "clever" reset circuit, or use a different pin
+
+// mapping of Waveshare e-Paper ESP8266 Driver Board, new version
+// BUSY -> GPIO5, RST -> GPIO2, DC -> GPIO4, CS -> GPIO15, CLK -> GPIO14, DIN -> GPIO13, GND -> GND, 3.3V -> 3.3V
+// NOTE for ESP8266: using SS (GPIO15) for CS may cause boot mode problems, add a 3.3k pull-down in case
+//      the e-Paper ESP8266 Driver Board should have no boot mode issue, as it doesn't use level converters
+
+// mapping of Waveshare e-Paper ESP8266 Driver Board, old version
+// BUSY -> GPIO16, RST -> GPIO5, DC -> GPIO4, CS -> GPIO15, CLK -> GPIO14, DIN -> GPIO13, GND -> GND, 3.3V -> 3.3V
+// NOTE for ESP8266: using SS (GPIO15) for CS may cause boot mode problems, add a 3.3k pull-down in case
+//      the e-Paper ESP8266 Driver Board should have no boot mode issue, as it doesn't use level converters
+
+// mapping suggestion for ESP32, e.g. LOLIN32, see .../variants/.../pins_arduino.h for your board
+// NOTE: there are variants with different pins for SPI ! CHECK SPI PINS OF YOUR BOARD
+// BUSY -> 4, RST -> 16, DC -> 17, CS -> SS(5), CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
+
+// mapping of Waveshare ESP32 Driver Board
+// BUSY -> 25, RST -> 26, DC -> 27, CS-> 15, CLK -> 13, DIN -> 14
+// NOTE: this board uses "unusual" SPI pins and requires re-mapping of HW SPI to these pins in SPIClass
+//       see example GxEPD2_WS_ESP32_Driver.ino, it shows how this can be done easily
+
+// mapping suggestion for ESP32, e.g. LOLIN32 D32 PRO
+// BUSY -> 15, RST -> 2, DC -> 0, CS -> 5, CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
+// note: use explicit value for CS, as SS is re-defined to TF_CS(4) in pins_arduino.h for Board: "LOLIN D32 PRO"
+
+// mapping suggestion for ESP32, e.g. TTGO T8 ESP32-WROVER
+// BUSY -> 4, RST -> 0, DC -> 2, CS -> SS(5), CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
+// for use with Board: "ESP32 Dev Module":
+
+// new mapping suggestion for STM32F1, e.g. STM32F103C8T6 "BluePill"
+// BUSY -> A1, RST -> A2, DC -> A3, CS-> A4, CLK -> A5, DIN -> A7
+
+// mapping suggestion for AVR, UNO, NANO etc.
+// BUSY -> 7, RST -> 9, DC -> 8, CS-> 10, CLK -> 13, DIN -> 11
+
+// mapping suggestion for AVR, Arduino Micro, Leonardo
+// note: on Leonardo board HW SPI pins are on 6-pin ICSP header
+// BUSY -> 7, RST -> 9, DC -> 8, CS-> 10, CLK -> 15, DIN -> 16
+
+// mapping of Waveshare Universal e-Paper Raw Panel Driver Shield for Arduino / NUCLEO
+// BUSY -> 7, RST -> 8, DC -> 9, CS-> 10, CLK -> 13, DIN -> 11
+
+// mapping suggestion for Arduino MEGA
+// BUSY -> 7, RST -> 9, DC -> 8, CS-> 53, CLK -> 52, DIN -> 51
+
+// mapping suggestion for Arduino DUE, note: pin 77 is on board pin 10, SS is 10
+// BUSY -> 7, RST -> 9, DC -> 8, CS-> 10, CLK -> 76, DIN -> 75
+// SPI pins are on 6 pin 2x3 SPI header, no SS on SPI header!
+
+// mapping suggestion for Arduino MKR1000 or MKRZERO
+// note: can't use SS on MKR1000: is defined as 24, should be 4
+// BUSY -> 5, RST -> 6, DC -> 7, CS-> 4, CLK -> 9, DIN -> 8
+
+// mapping suggestion for Arduino Nano RP2040 Connect
+// BUSY -> 7, RST -> 9, DC -> 8, CS-> 10, CLK -> 13, DIN -> 11
+
+// mapping suggestion for Raspberry Pi Pico RP2040
+// BUSY -> 7, RST -> 9, DC -> 8, CS-> 5, CLK -> 2, DIN -> 3

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

include/lightning_atm.h

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+#ifndef LIGHTNING_ATM_H
+# define LIGHTNING_ATM_H
+
+#include <Arduino.h>
+#include <GxEPD2_BW.h>
+#include <Fonts/FreeMonoBold9pt7b.h>
+#include "bitmaps/Bitmaps200x200.h"
+#include "qrcode.h"
+#include "Bitcoin.h"
+#include <stdlib.h>
+#include <Hash.h>
+#include <ctype.h>
+
+// select the display class and display driver class in the following file (new style):
+#include "GxEPD2_display_selection_new_style.h"
+
+//Generate the URL and secret in LNBITS with the LNURLDevice Extension:
+String baseURLATM = "https://legend.lnbits.com/lnurldevice/api/v1/lnurl/234i8";
+String secretATM = "d4RQVjJZQ7ubqvLfLQHCvk";
+String currencyATM = "EUR";
+
+#define COIN_PIN 17
+#define PULSE_TIMEOUT 200
+#define	LED_BUTTON_PIN 13
+#define	BUTTON_PIN 32
+#define	MOSFET_PIN 12
+
+typedef struct s_qrdata {
+	uint8_t current_y;
+  	uint8_t current_x;
+  	uint8_t start_x;
+  	uint8_t start_y;
+	uint8_t	module_size;
+	uint8_t	qr_size;
+}	t_qrdata;
+
+// put function declarations here:
+void 			clean_screen();
+void 			to_upper(char *arr);
+void 			qr_withdrawl_screen(String top_message, String bottom_message, const char *qr_content);
+char 			*makeLNURL(float total);
+int 			xor_encrypt(uint8_t *output, size_t outlen, uint8_t *key, size_t keylen, uint8_t *nonce, size_t nonce_len, uint64_t pin, uint64_t amount_in_cents);
+void  			show_inserted_amount(int amount_in_cents);
+String 			get_amount_string(int amount_in_cents);
+unsigned int 	detect_coin();
+void  			home_screen();
+void 			IRAM_ATTR button_pressed_itr();
+void  			wait_for_user_to_scan();
+
+#endif

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

@@ -0,0 +1,19 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 9600
+lib_deps =
+	zinggjm/GxEPD2@^1.5.2
+	ricmoo/QRCode@^0.0.1
+	stepansnigirev/uBitcoin@^0.2.0