firmware/variants/heltec_v2.1/variant.h

// Pin planning should refer to this document
// https://resource.heltec.cn/download/WiFi_LoRa_32/WIFI_LoRa_32_V2.pdf

// the default ESP32 Pin of 15 is the Oled SCL, 37 is battery pin.
// Tested on Neo6m module.
#undef GPS_RX_PIN
#undef GPS_TX_PIN
#define GPS_RX_PIN 36
#define GPS_TX_PIN 33

#define PIN_GPS_EN 37 // GPS power enable pin

#ifndef USE_JTAG  // gpio15 is TDO for JTAG, so no I2C on this board while doing jtag
#define I2C_SDA 4 // I2C pins for this board
#define I2C_SCL 15
#endif

#define RESET_OLED 16 // If defined, this pin will be used to reset the display controller

#define VEXT_ENABLE 21 // active low, powers the oled display and the lora antenna boost
#define LED_PIN 25     // If defined we will blink this LED
#define BUTTON_PIN 0   // If defined, this will be used for user button presses

#define USE_RF95
#define LORA_DIO0 26 // a No connect on the SX1262 module
#ifndef USE_JTAG
#define LORA_RESET 14
#endif
#define LORA_DIO1 35 // https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436
#define LORA_DIO2 34 // Not really used

#define ADC_MULTIPLIER 3.2 // 220k + 100k (320k/100k=3.2)
// #define ADC_WIDTH ADC_WIDTH_BIT_10

#define BATTERY_PIN 37 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage
#define ADC_CHANNEL ADC1_GPIO37_CHANNEL
#define EXT_NOTIFY_OUT 13 // Default pin to use for Ext Notify Module.
revert 2022-04-02 03:38:23 +00:00			`// Pin planning should refer to this document`
			`// https://resource.heltec.cn/download/WiFi_LoRa_32/WIFI_LoRa_32_V2.pdf`

			`// the default ESP32 Pin of 15 is the Oled SCL, 37 is battery pin.`
Create variant.h 2022-01-24 19:40:28 +00:00			`// Tested on Neo6m module.`
			`#undef GPS_RX_PIN`
			`#undef GPS_TX_PIN`
			`#define GPS_RX_PIN 36`
revert 2022-04-02 03:38:23 +00:00			`#define GPS_TX_PIN 33`
Create variant.h 2022-01-24 19:40:28 +00:00
Added triple-press GPS toggle button changes for select ESP32 devices (#2617) * Added triple-press GPS toggle button changes * Revert edits to extensions.json * comma'd --------- Co-authored-by: Ben Meadors <benmmeadors@gmail.com> Co-authored-by: code8buster <communismisgreat@national.shitposting.agency> 2023-07-17 23:55:40 +00:00			`#define PIN_GPS_EN 37 // GPS power enable pin`

Create variant.h 2022-01-24 19:40:28 +00:00			`#ifndef USE_JTAG // gpio15 is TDO for JTAG, so no I2C on this board while doing jtag`
			`#define I2C_SDA 4 // I2C pins for this board`
			`#define I2C_SCL 15`
			`#endif`

			`#define RESET_OLED 16 // If defined, this pin will be used to reset the display controller`

			`#define VEXT_ENABLE 21 // active low, powers the oled display and the lora antenna boost`
			`#define LED_PIN 25 // If defined we will blink this LED`
			`#define BUTTON_PIN 0 // If defined, this will be used for user button presses`

			`#define USE_RF95`
			`#define LORA_DIO0 26 // a No connect on the SX1262 module`
			`#ifndef USE_JTAG`
			`#define LORA_RESET 14`
			`#endif`
Use LORA_DIO1 as RadioLib GPIO for SX127x chips (#2290) * When channel is active, first try receiving that packet Afterwards we'll try transmitting again * Remove setStandby in startSend Already done in isChannelActive() * Set LORA_DIO1 as RadioLib GPIO for SX127x * LORA_DIO1 for Heltec v1, overlaps with GPS_TX Set to RADIOLIB_NC for now * If receive was not successful, startReceive doesn't trigger the interrupt So we have to go back to transmitting anyway --------- Co-authored-by: Ben Meadors <benmmeadors@gmail.com> 2023-02-20 13:40:44 +00:00			`#define LORA_DIO1 35 // https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436`
Create variant.h 2022-01-24 19:40:28 +00:00			`#define LORA_DIO2 34 // Not really used`

Battery level with proportional filter and lookup table (#3216) * Add battery level with lookup table now uses a lookup table to better calculate battery level of different cells * LifePo4 and PB battery table - added voltage filter removed delay from adc reading, added a software filter to smooth out voltage readings. In those applications battery would last hours to days, no sudden change should be expected so a less frequent voltage reading or a more aggressive filtering could be done. Note: to speed up convergence i initiliazied the last value to the minimum voltage, there are other and better ways to init the filter. Added LiFePO4 and PB open circuit volta battery tables, * Fixed ADC_CTRL , Checks for valid ADC readings line 230/386 For heltec v3 and heltec tracker a different approach was used with the ADC_CTRL pin, now is more uniform using the same code for the 3 boards. line 236 Check if the raw reading we are getting is Valid or not, count only the valid readings. This could lead to a division by 0 (improbable) so that's why at line 258 there is a check for that. * updated OCV values updated value to not OCV but to very low current, almost the same anyway * Added Alkaline/Nimh voltage curve Added Alkaline/Nimh voltage curve for AA/AAA and similar cells * updates variants for new capacity measurement * trunk reformatting * trunk fmt * Add LTO chemistry --------- Co-authored-by: Ben Meadors <benmmeadors@gmail.com> Co-authored-by: code8buster <20384924+code8buster@users.noreply.github.com> 2024-02-16 12:09:57 +00:00			`#define ADC_MULTIPLIER 3.2 // 220k + 100k (320k/100k=3.2)`
			`// #define ADC_WIDTH ADC_WIDTH_BIT_10`
Adjusted adc_multiplier for heltec2.1 and added adc_mulitplier_override (#1183) 2022-02-09 19:37:48 +00:00
Add ADC channels to esp variants, plug code back in to make sure other archs work 2023-05-16 05:40:42 +00:00			`#define BATTERY_PIN 37 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage`
			`#define ADC_CHANNEL ADC1_GPIO37_CHANNEL`
			`#define EXT_NOTIFY_OUT 13 // Default pin to use for Ext Notify Module.`