text: // clang-format off
  
  #ifndef _TTGOV21OLD_H
  #define _TTGOV21OLD_H
  
  #include <stdint.h>
  
  
  /*  Hardware related definitions for TTGO V2.1 Board
  // ATTENTION: check your board version!
  // This settings are for boards without label on pcb, or labeled v1.5 on pcb
  // see https://github.com/manuelbl/ttn-esp32/wiki/Boards-and-Pins
  */
  
  #define HAS_LORA 1       // comment out if device shall not send data via LoRa
  #define CFG_sx1276_radio 1 // HPD13A LoRa SoC
  #define HAS_LED NOT_A_PIN // no usable LED on board
  #define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
  
  #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
  //#define DISPLAY_FLIP  1 // rotated display
  //#define BAT_MEASURE_ADC ADC1_GPIO35_CHANNEL // battery probe GPIO pin -> ADC1_CHANNEL_7
  //#define BAT_VOLTAGE_DIVIDER 2 // voltage divider 100k/100k on board
  
  // Pins for I2C interface of OLED Display
  #define MY_OLED_SDA (21)
  #define MY_OLED_SCL (22)
  #define MY_OLED_RST U8X8_PIN_NONE
  
  // Pins for LORA chip SPI interface, reset line and interrupt lines
  #define LORA_SCK  (5) 
  #define LORA_CS   (18)
  #define LORA_MISO (19)
  #define LORA_MOSI (27)
  #define LORA_RST  LMIC_UNUSED_PIN
  // #define LORA_RST  (12)  // v1.5 labelled with pcb date 20180523
  #define LORA_IRQ  (26)
  #define LORA_IO1  (33)
  #define LORA_IO2  (32)
  
  #endif