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Config.h
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Config.h
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/* Copyright (c) 2021 Neil McKechnie
*
* This Library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This Library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef config_h
#define config_h
// The following logic should work for all supported platforms, hopefully.
#if defined(ARDUINO_heltec_wifi_kit_32) || defined(ARDUINO_WIFI_KIT_32)
#define ARDUINO_HELTEC_WIFI_KIT_32
#endif
#if defined(ESP_PLATFORM)
#if !defined(ESP32)
#define ESP32
#endif
#elif defined(ESP8266)
// nothing needs done here.
#elif defined(ARDUINO_AVR_UNO) || defined(ARDUINO_AVR_NANO)
#define ARDUINO_UNO_NANO
#elif defined(ARDUINO_AVR_MEGA2560)
#define ARDUINO_MEGA
#elif defined(NANO_EVERY_PINOUT)
#define ARDUINO_NANO_EVERY
#else
#error "Platform not recognised"
#endif
// Uncomment the "#define USE_DIO2" to use the 'Fast digital i/o library' DIO2
// in place of the normal digitalRead() and digitalWrite().
// Reduces CPU load by about 17%. Only applicable to Arduino Uno/Mega/Nano.
#define USE_DIO2
// Uncomment the "#define USETIMER" to perform the timing using the ATmega328's
// and ESP32's Input Capture mode which captures the time through hardware instead
// of software. This enables a higher accuracy and consistency, and because we can capture the
// Timer counter register (TCNTn) at the time of the digital change, it is immune to
// timing errors caused by other interrupts.
// Works on Arduino Uno (Timer1/pin D8)
// Arduino Nano (Timer1/pin D8)
// Arduino Mega (Timer4/pin D49)
// Arduino Nano Every (Timer B2/any pin)
// If we don't use this, then the selected input pin must support change interrupt
// (defaults to pin D2 on Uno, Nano and Mega, GPIO2 on ESP8266 and GPIO5 on ESP32.
#define USETIMER
// Input pin definitions. Defaults:
// Nano (USETIMER): 8
// Uno (USETIMER): 8
// Mega (USETIMER): 49
// Nano/Uno/Mega, Non-USETIMER: 2
// ESP32: 5
// ESP8266: 2
// Other: 2
#if defined(USETIMER)
#if defined(ARDUINO_UNO_NANO) || defined(ARDUINO_NANO_EVERY)
#define INPUTPIN 8
#elif defined(ARDUINO_MEGA)
#define INPUTPIN 49
#elif defined(ESP32)
#define INPUTPIN 5
#else
// Assume timer not supported, use default pin
#undef USETIMER
#define INPUTPIN 2
#endif
#else
#if defined(ESP32)
#define INPUTPIN 5
#else
#define INPUTPIN 2
#endif
#endif
// Uncomment following lines to enable OLED output on pins SDA_OLED and SCL_OLED.
// (ESP or Mega only).
#define USE_OLED
#if defined(ESP8266) // Heltec Kit 8 has pins 4/15 for I2C.
#define SDA_OLED 4
#define SCL_OLED 5
#define OLED_RESET 16
#define OLED_I2CADDRESS 0x3C
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 32
#elif defined(ARDUINO_HELTEC_WIFI_KIT_32) // Heltec Kit 32 has pins 4/15 predefined for I2C.
// #define SDA_OLED 4
// #define SCL_OLED 15
#define OLED_RESET 16
#define OLED_I2CADDRESS 0x3C
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#else // Other boards - edit as appropriate.
#define SDA_OLED 4
#define SCL_OLED 5
#define OLED_RESET 16
#define OLED_I2CADDRESS 0x3D
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#endif
// Button for selecting new page on OLED. The button action is carried out
// when the pin goes from 1 to 0 (pull-up is enabled).
#define BUTTONPIN 0
// LED pin definitions - uncomment and assign as required.
//#define LEDPIN_ACTIVE 13 // Shows interrupts being received, ie DCC active
//#define LEDPIN_LOCOSPEED 3 // Driven from loco speed packet for loco 3
//#define LEDPIN_DECODING 7 // lights when a packet with valid checksum is received
//#define LEDPIN_FAULT 6 // Lights when a checksum error or glitch is encountered.
// Uncomment the following line to enable HTTP Server (ESP32 or ESP8266 only).
#define USE_HTTPSERVER
// SSID and password can be configured here. However, the server will, by preference,
// connect using the same credentials as last time; if that fails it will try WPS;
// only if that fails too, will it use the credentials below.
#define WIFI_SSID ""
#define WIFI_PASSWORD ""
// Name used by mDNS to register the device. On some browsers it can be accessed
// through this name with a ".local" suffix (e.g. http://DccInspector.local/).
#define DNSNAME "DccInspector"
// OLED isn't supported on Uno or Nano or Nano Every
#if defined(ARDUINO_UNO_NANO) || defined(ARDUINO_NANO_EVERY)
#if defined(USE_OLED)
#undef USE_OLED
#endif
#endif
// HTTP Server isn't supported on Uno or Nano or Mega or Nano Every
#if defined(ARDUINO_UNO_NANO) || defined(ARDUINO_MEGA) || defined(ARDUINO_NANO_EVERY)
#if defined(USE_HTTPSERVER)
#undef USE_HTTPSERVER
#endif
#endif
#define SERIAL_SPEED 115200
#if defined(ESP32) || defined(ESP8266) || defined(ESP_PLATFORM)
#define INTERRUPT_SAFE IRAM_ATTR
#else
#define INTERRUPT_SAFE
#endif
#endif