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https://github.com/meshtastic/firmware.git
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Add support for a new variant constructed by soldering
a Pro Micro type nRF52840 board directly to an E22 module.
This commit is contained in:
Brad Bosch
parent
7505fe7a7c
commit
848243004a
11
variants/nrf52840/diy/easy-nrf52-promicro_e22/platformio.ini
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11
variants/nrf52840/diy/easy-nrf52-promicro_e22/platformio.ini
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; DIY no custom PCB, easy construction node based on Pro Micro Supermini NRF52840 Development Board + E22 900M30S
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[env:easy-pro_micro_nrf_e22]
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extends = nrf52840_base
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board = promicro-nrf52840
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build_flags = ${nrf52840_base.build_flags}
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-I variants/nrf52840/diy/easy-nrf52-pro-micro_e22
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-D NRF52_PROMICRO_DIY
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build_src_filter = ${nrf52_base.build_src_filter} +<../variants//nrf52840/diy/easy-nrf52-pro-micro_e22>
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lib_deps =
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${nrf52840_base.lib_deps}
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debug_tool = jlink
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38
variants/nrf52840/diy/easy-nrf52-promicro_e22/variant.cpp
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variants/nrf52840/diy/easy-nrf52-promicro_e22/variant.cpp
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/*
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Copyright (c) 2014-2015 Arduino LLC. All right reserved.
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Copyright (c) 2016 Sandeep Mistry All right reserved.
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Copyright (c) 2018, Adafruit Industries (adafruit.com)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "variant.h"
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#include "nrf.h"
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#include "wiring_constants.h"
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#include "wiring_digital.h"
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const uint32_t g_ADigitalPinMap[] = {
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// P0
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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// P1
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47};
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void initVariant()
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{
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// 3V3 Power Rail
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pinMode(PIN_3V3_EN, OUTPUT);
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digitalWrite(PIN_3V3_EN, HIGH);
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}
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192
variants/nrf52840/diy/easy-nrf52-promicro_e22/variant.h
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variants/nrf52840/diy/easy-nrf52-promicro_e22/variant.h
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/*
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A DIY, easy, no PCB, basic but powerful node based on E22 900M33S and
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Pro Micro compatible NRF52840 dev boards such as the Tenstar Robot
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Supermini or Nice Nano.
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Without adding GPS or other peripherals, this node should run about 45
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hours on a 1S 1000 mAh battery.
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This node can be constructed by directly soldering the development
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board directly to an EBYTE E22 900m30S. There will be 7 directly
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soldered pads, 3 header pins, and only 1 wire connection required.
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You can power the node via USB or a battery, or you can install a power
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connector on the GND and VCC pads of the E22; a JST PH or XH socket
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should fit. It may be easiest to install this first if you want it.
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Note that the E22-900M33S will output near it's specified power level
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only when supplied with 5-5.5 volts. If you take advantage of the
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battery charger on the Pro Micro board and power everything from a 1S
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Lithium battery, the E22-900M33S will output a maximum of about 1
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Watt.
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Be sure to perform the initial flash of the Meshtastic firmware before
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proceeding with the assembly to protect the E22 and ensure that the
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TXEN pad is not driven when it shouldn't be.
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Detailed build instructions can be found here:
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https://github.com/brad112358/easy_E22?tab=readme-ov-file#easy-diy-e22-nrf52840-build-instructions
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*/
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#ifndef _VARIANT_EASY_PROMICRO_DIY_
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#define _VARIANT_EASY_PROMICRO_DIY_
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/** Master clock frequency */
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#define VARIANT_MCK (64000000ul)
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// #define USE_LFXO // Board uses 32khz crystal for LF
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#define USE_LFRC // Board uses RC for LF
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#define PROMICRO_DIY_TCXO
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/*----------------------------------------------------------------------------
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* Headers
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*----------------------------------------------------------------------------*/
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#include "WVariant.h"
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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/*
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E22/NRF52 PRO MICRO PIN ASSIGNMENT
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| Pin | Function | | Pin | Function |
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| ----- | ----------- | --- | -------- | ------------ |
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| Gnd | | | vbat | |
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| P0.06 | Serial2 RX | | vbat | |
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| P0.08 | Serial2 TX | | Gnd | |
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| Gnd | | | reset | |
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| Gnd | GND | | ext_vcc | *see 0.13 |
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| P0.17 | Free pin | | P0.31 | BATTERY_PIN |
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| P0.20 | Free pin | | P0.29 | DI01 |
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| P0.22 | Free pin | | P0.02 | BUSY |
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| P0.24 | Free pin | | P1.15 | NRST |
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| P1.00 | TXEN | | P1.13 | MISO |
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| P0.11 | RXEN | | P1.11 | MOSI |
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| P1.04 | SDA | | P0.10 | SCK |
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| P1.06 | SCL | | P0.09 | NSS |
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| | | | | |
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| | Mid board | | | Internal |
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| P1.01 | GPS_TX | | 0.15 | LED |
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| P1.02 | GPS_RX | | 0.13 | 3V3_EN |
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| P1.07 | GPS_EN | | | |
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*/
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// Number of pins defined in PinDescription array
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#define PINS_COUNT (48)
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#define NUM_DIGITAL_PINS (48)
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#define NUM_ANALOG_INPUTS (1)
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#define NUM_ANALOG_OUTPUTS (0)
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// Pin 13 enables 3.3V periphery.
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#define PIN_3V3_EN (0 + 13) // P0.13
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// Battery
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#define BATTERY_PIN (0 + 31) // P0.31
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#define ADC_CHANNEL ADC1_GPIO4_CHANNEL
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#define ADC_RESOLUTION 14
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#define BATTERY_SENSE_RESOLUTION_BITS 12
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#define BATTERY_SENSE_RESOLUTION 4096.0
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// Definition of milliVolt per LSB => 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096
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#define VBAT_MV_PER_LSB (0.73242188F)
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// Voltage divider value => 1.5M + 1M voltage divider on VBAT = (1.5M / (1M + 1.5M))
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#define VBAT_DIVIDER (0.6F)
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// Compensation factor for the VBAT divider
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#define VBAT_DIVIDER_COMP (2.02) // 2 + magic for current drain of input
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// Fixed calculation of milliVolt from compensation value
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#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
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#undef AREF_VOLTAGE
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#define AREF_VOLTAGE 3.0
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#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
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#define ADC_MULTIPLIER VBAT_DIVIDER_COMP // REAL_VBAT_MV_PER_LSB
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#define VBAT_RAW_TO_SCALED(x) (REAL_VBAT_MV_PER_LSB * x)
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// WIRE IC AND IIC PINS
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#define WIRE_INTERFACES_COUNT 1
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#define PIN_WIRE_SDA (32 + 4) // P1.04
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#define PIN_WIRE_SCL (32 + 6) // P1.06
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// LED
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#define PIN_LED1 (0 + 15) // P0.15
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#define LED_BUILTIN PIN_LED1
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// Actually red
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#define LED_BLUE PIN_LED1
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#define LED_STATE_ON 1 // State when LED is lit
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// Button
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//#define BUTTON_PIN // no button
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// GPS
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#define PIN_GPS_TX (32 + 1) // P1.01
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#define PIN_GPS_RX (32 + 2) // P1.02
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#define PIN_GPS_EN (32 + 7) // P1.07
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#define GPS_POWER_TOGGLE
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#define GPS_UBLOX
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// define GPS_DEBUG
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// UART interfaces
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#define PIN_SERIAL1_RX PIN_GPS_TX
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#define PIN_SERIAL1_TX PIN_GPS_RX
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#define PIN_SERIAL2_RX (0 + 6) // P0.06
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#define PIN_SERIAL2_TX (0 + 8) // P0.08
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// Serial interfaces
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#define SPI_INTERFACES_COUNT 1
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#define PIN_SPI_MISO (32 + 13) // P1.13
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#define PIN_SPI_MOSI (32 + 11) // P1.11
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#define PIN_SPI_SCK (0 + 10) // P0.10
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#define LORA_MISO PIN_SPI_MISO
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#define LORA_MOSI PIN_SPI_MOSI
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#define LORA_SCK PIN_SPI_SCK
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#define LORA_CS (0 + 9) // P0.09 NSS
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// LORA MODULE
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#define USE_SX1262
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#define LORA_DIO0 (0 + 2) // P0.02 BUSY
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#define LORA_DIO1 (0 + 29) // P0.29 IRQ
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#define LORA_RESET (32 + 15) // P1.15 NRST
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// SX126X CONFIG
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#undef TX_GAIN_LORA
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#define TX_GAIN_LORA 22 // 8 for E22 900M30S, 25 for 900M33S, 22 for 3.7V battery powered 900M33S, 0 for 900M22S
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#define SX126X_MAX_POWER 8 // 8 for 900M33S, 22 for 900M30S and 900M22S; defaults to 22 if not defined
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#define SX126X_CS LORA_CS
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#define SX126X_DIO1 LORA_DIO1
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#define SX126X_BUSY LORA_DIO0
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#define SX126X_RESET LORA_RESET
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#define SX126X_RXEN (0 + 11) // P0.11
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#define SX126X_TXEN (32 + 0) // P1.00
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/*
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| Mfr | Module | TCXO | RF Switch | Notes |
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| ------------ | ---------------- | ---- | --------- | ------------------------------------- |
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| Ebyte | E22-900M22S | Yes | Ext | |
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| Ebyte | E22-900M30S | Yes | Ext | |
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| Ebyte | E22-900M33S | Yes | Ext | MAX_POWER must be set to 8 for this! |
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On the SX1262, DIO3 sets the voltage for an external TCXO, if one is present. If one is not present, use TCXO_OPTIONAL to try both
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settings.
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*/
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#define SX126X_DIO3_TCXO_VOLTAGE 1.8
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#define TCXO_OPTIONAL // make it so that the firmware can try both TCXO and XTAL
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#ifdef __cplusplus
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}
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#endif
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/*----------------------------------------------------------------------------
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* Arduino objects - C++ only
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*----------------------------------------------------------------------------*/
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#endif
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