This is a copy of the community maintained fork of the open firmware which powers RNode devices. This version will have support for the hardware made by Mees Electronics.
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// Copyright (C) 2023, Mark Qvist
// This program 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 program 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 program. If not, see <https://www.gnu.org/licenses/>.
#include "ROM.h"
#ifndef CONFIG_H
#define CONFIG_H
#define MAJ_VERS 0x01
#define MIN_VERS 0x3F
#define PLATFORM_AVR 0x90
#define PLATFORM_ESP32 0x80
#define MCU_1284P 0x91
#define MCU_2560 0x92
#define MCU_ESP32 0x81
#define BOARD_RNODE 0x31
#define BOARD_HMBRW 0x32
#define BOARD_TBEAM 0x33
#define BOARD_HUZZAH32 0x34
#define BOARD_GENERIC_ESP32 0x35
#define BOARD_LORA32_V2_0 0x36
#define BOARD_LORA32_V2_1 0x37
#define BOARD_LORA32_V1_0 0x39
#define BOARD_HELTEC32_V2 0x38
#define BOARD_RNODE_NG_20 0x40
#define BOARD_RNODE_NG_21 0x41
#define MODE_HOST 0x11
#define MODE_TNC 0x12
#define CABLE_STATE_DISCONNECTED 0x00
#define CABLE_STATE_CONNECTED 0x01
uint8_t cable_state = CABLE_STATE_DISCONNECTED;
#define BT_STATE_NA 0xff
#define BT_STATE_OFF 0x00
#define BT_STATE_ON 0x01
#define BT_STATE_PAIRING 0x02
#define BT_STATE_CONNECTED 0x03
uint8_t bt_state = BT_STATE_NA;
uint32_t bt_ssp_pin = 0;
bool bt_ready = false;
bool bt_enabled = false;
bool bt_allow_pairing = false;
#define M_FRQ_S 27388122
#define M_FRQ_R 27388061
bool console_active = false;
bool sx1276_installed = false;
#if defined(__AVR_ATmega1284P__)
#define PLATFORM PLATFORM_AVR
#define MCU_VARIANT MCU_1284P
#elif defined(__AVR_ATmega2560__)
#define PLATFORM PLATFORM_AVR
#define MCU_VARIANT MCU_2560
#elif defined(ESP32)
#define PLATFORM PLATFORM_ESP32
#define MCU_VARIANT MCU_ESP32
#else
#error "The firmware cannot be compiled for the selected MCU variant"
#endif
#define MTU 508
#define SINGLE_MTU 255
#define HEADER_L 1
#define MIN_L 1
#define CMD_L 64
// MCU dependent configuration parameters
#define HAS_DISPLAY false
#define HAS_BLUETOOTH false
#define HAS_TCXO false
#define HAS_PMU false
#define HAS_NP false
#if MCU_VARIANT == MCU_1284P
const int pin_cs = 4;
const int pin_reset = 3;
const int pin_dio = 2;
const int pin_led_rx = 12;
const int pin_led_tx = 13;
#define BOARD_MODEL BOARD_RNODE
#define CONFIG_UART_BUFFER_SIZE 6144
#define CONFIG_QUEUE_SIZE 6144
#define CONFIG_QUEUE_MAX_LENGTH 200
#define EEPROM_SIZE 4096
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#elif MCU_VARIANT == MCU_2560
const int pin_cs = 5;
const int pin_reset = 4;
const int pin_dio = 2;
const int pin_led_rx = 12;
const int pin_led_tx = 13;
#define BOARD_MODEL BOARD_HMBRW
#define CONFIG_UART_BUFFER_SIZE 768
#define CONFIG_QUEUE_SIZE 5120
#define CONFIG_QUEUE_MAX_LENGTH 24
#define EEPROM_SIZE 4096
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#elif MCU_VARIANT == MCU_ESP32
// Board models for ESP32 based builds are
// defined by the build target in the makefile.
// If you are not using make to compile this
// firmware, you can manually define model here.
//
// #define BOARD_MODEL BOARD_GENERIC_ESP32
#if BOARD_MODEL == BOARD_GENERIC_ESP32
const int pin_cs = 4;
const int pin_reset = 36;
const int pin_dio = 39;
const int pin_led_rx = 14;
const int pin_led_tx = 32;
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#elif BOARD_MODEL == BOARD_TBEAM
const int pin_cs = 18;
const int pin_reset = 23;
const int pin_dio = 26;
const int pin_led_rx = 2;
const int pin_led_tx = 4;
#define HAS_DISPLAY true
#define HAS_PMU true
#define HAS_TCXO true
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#define HAS_SD false
#elif BOARD_MODEL == BOARD_HUZZAH32
const int pin_cs = 4;
const int pin_reset = 36;
const int pin_dio = 39;
const int pin_led_rx = 14;
const int pin_led_tx = 32;
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#elif BOARD_MODEL == BOARD_LORA32_V1_0
const int pin_cs = 18;
const int pin_reset = 14;
const int pin_dio = 26;
#if defined(EXTERNAL_LEDS)
const int pin_led_rx = 25;
const int pin_led_tx = 2;
#else
const int pin_led_rx = 2;
const int pin_led_tx = 2;
#endif
#define HAS_DISPLAY true
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#elif BOARD_MODEL == BOARD_LORA32_V2_0
const int pin_cs = 18;
const int pin_reset = 12;
const int pin_dio = 26;
#if defined(EXTERNAL_LEDS)
const int pin_led_rx = 2;
const int pin_led_tx = 0;
#else
const int pin_led_rx = 22;
const int pin_led_tx = 22;
#endif
#define HAS_DISPLAY true
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#elif BOARD_MODEL == BOARD_LORA32_V2_1
const int pin_cs = 18;
const int pin_reset = 23;
const int pin_dio = 26;
#if defined(EXTERNAL_LEDS)
const int pin_led_rx = 15;
const int pin_led_tx = 4;
#else
const int pin_led_rx = 25;
const int pin_led_tx = 25;
#endif
#define HAS_DISPLAY true
#define HAS_BLUETOOTH true
#define HAS_PMU true
#define HAS_CONSOLE true
#elif BOARD_MODEL == BOARD_HELTEC32_V2
const int pin_cs = 18;
const int pin_reset = 23;
const int pin_dio = 26;
#if defined(EXTERNAL_LEDS)
const int pin_led_rx = 36;
const int pin_led_tx = 37;
#else
const int pin_led_rx = 25;
const int pin_led_tx = 25;
#endif
#define HAS_DISPLAY true
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#elif BOARD_MODEL == BOARD_RNODE_NG_20
#define HAS_DISPLAY true
#define HAS_BLUETOOTH true
#define HAS_NP true
#define HAS_CONSOLE true
const int pin_cs = 18;
const int pin_reset = 12;
const int pin_dio = 26;
const int pin_np = 4;
#if HAS_NP == false
#if defined(EXTERNAL_LEDS)
const int pin_led_rx = 2;
const int pin_led_tx = 0;
#else
const int pin_led_rx = 22;
const int pin_led_tx = 22;
#endif
#endif
#elif BOARD_MODEL == BOARD_RNODE_NG_21
#define HAS_DISPLAY true
#define HAS_BLUETOOTH true
#define HAS_CONSOLE true
#define HAS_PMU true
#define HAS_NP true
#define HAS_SD false
const int pin_cs = 18;
const int pin_reset = 23;
const int pin_dio = 26;
const int pin_np = 12;
const int pin_dac = 25;
const int pin_adc = 34;
const int SD_MISO = 2;
const int SD_MOSI = 15;
const int SD_CLK = 14;
const int SD_CS = 13;
#if HAS_NP == false
#if defined(EXTERNAL_LEDS)
const int pin_led_rx = 12;
const int pin_led_tx = 4;
#else
const int pin_led_rx = 25;
const int pin_led_tx = 25;
#endif
#endif
#else
#error An unsupported board was selected. Cannot compile RNode firmware.
#endif
bool mw_radio_online = false;
#define CONFIG_UART_BUFFER_SIZE 6144
#define CONFIG_QUEUE_SIZE 6144
#define CONFIG_QUEUE_MAX_LENGTH 200
#define EEPROM_SIZE 1024
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#define GPS_BAUD_RATE 9600
#define PIN_GPS_TX 12
#define PIN_GPS_RX 34
#endif
#if BOARD_MODEL == BOARD_TBEAM
#define I2C_SDA 21
#define I2C_SCL 22
#define PMU_IRQ 35
#endif
#define eeprom_addr(a) (a+EEPROM_OFFSET)
// MCU independent configuration parameters
const long serial_baudrate = 115200;
const int lora_rx_turnaround_ms = 50;
// SX1276 RSSI offset to get dBm value from
// packet RSSI register
const int rssi_offset = 157;
// Default LoRa settings
int lora_sf = 0;
int lora_cr = 5;
int lora_txp = 0xFF;
uint32_t lora_bw = 0;
uint32_t lora_freq = 0;
// Operational variables
bool radio_locked = true;
bool radio_online = false;
bool community_fw = true;
bool hw_ready = false;
bool radio_error = false;
bool disp_ready = false;
bool pmu_ready = false;
bool promisc = false;
bool implicit = false;
uint8_t implicit_l = 0;
uint8_t op_mode = MODE_HOST;
uint8_t model = 0x00;
uint8_t hwrev = 0x00;
int current_rssi = -292;
int last_rssi = -292;
uint8_t last_rssi_raw = 0x00;
uint8_t last_snr_raw = 0x80;
uint8_t seq = 0xFF;
uint16_t read_len = 0;
// Incoming packet buffer
uint8_t pbuf[MTU];
// KISS command buffer
uint8_t cmdbuf[CMD_L];
// LoRa transmit buffer
uint8_t tbuf[MTU];
uint32_t stat_rx = 0;
uint32_t stat_tx = 0;
bool stat_signal_detected = false;
bool stat_signal_synced = false;
bool stat_rx_ongoing = false;
bool dcd = false;
bool dcd_led = false;
bool dcd_waiting = false;
uint16_t dcd_count = 0;
uint16_t dcd_threshold = 15;
uint32_t status_interval_ms = 3;
uint32_t last_status_update = 0;
// Status flags
const uint8_t SIG_DETECT = 0x01;
const uint8_t SIG_SYNCED = 0x02;
const uint8_t RX_ONGOING = 0x04;
// Power management
#define BATTERY_STATE_DISCHARGING 0x01
#define BATTERY_STATE_CHARGING 0x02
#define BATTERY_STATE_CHARGED 0x03
bool battery_installed = false;
bool battery_indeterminate = false;
bool external_power = false;
bool battery_ready = false;
float battery_voltage = 0.0;
float battery_percent = 0.0;
uint8_t battery_state = 0x00;
uint8_t display_intensity = 0xFF;
bool device_init_done = false;
bool eeprom_ok = false;
bool firmware_update_mode = false;
// Boot flags
#define START_FROM_BOOTLOADER 0x01
#define START_FROM_POWERON 0x02
#define START_FROM_BROWNOUT 0x03
#define START_FROM_JTAG 0x04
#endif