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Add support for a new nRF variant constructed by soldering an E22 (#7579)

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* Add support for an alternate pin assignment to the nrf52_promicro_diy variant
constructed by soldering a Pro Micro type nRF52840 board directly to an E22 module.

* Fix GPS connection documentation and Buzzer pin

---------

Co-authored-by: Tom <116762865+NomDeTom@users.noreply.github.com>
This commit is contained in:
brad112358
2026-07-30 15:46:59 +00:00
committed by GitHub
co-authored by GitHub Tom
parent 06577e6b36
commit 84322af4e0
2 changed files with 95 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
variants/nrf52840/diy/nrf52_promicro_diy_tcxo/platformio.ini
+14
View File
@@ -39,3 +39,17 @@ lib_deps =
extra_scripts =
${nrf52840_base.extra_scripts}
variants/nrf52840/diy/nrf52_promicro_diy_tcxo/custom_build_tasks.py ; Add to PIO's Project Tasks pane: preset builds for common displays
; NRF52 ProMicro w/ EasyProMicro pinout
[env:nrf52_promicro_diy-easypromicro]
board_level = extra
extends = nrf52840_base
board = promicro-nrf52840
build_flags =
${nrf52840_base.build_flags}
-I variants/nrf52840/diy/nrf52_promicro_diy_tcxo
-D NRF52_PROMICRO_DIY
-D EASYPROMICRO ; For EasyProMicro pinout (instead of ProMicro pinout)
build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nrf52840/diy/nrf52_promicro_diy_tcxo>
debug_tool = jlink
variants/nrf52840/diy/nrf52_promicro_diy_tcxo/variant.h
+81 -4
View File
@@ -44,6 +44,32 @@ NRF52 PRO MICRO PIN ASSIGNMENT
| P1.07 | Free pin   |   |         |             | |
*/
/*
Alternative pin assignement for Easy E22 Promicro build
https://github.com/brad112358/easy_E22
| Pin   | Function   |   | Pin     | Function     |
| ----- | ----------- | --- | -------- | ------------ |
| Gnd   |             |   | vbat     |             |
| P0.06 | BUTTON_PIN |   | vbat     |             |
| P0.08 | PIN_BUZZER |   | Gnd     |             |
| Gnd   |             |   | reset   |             |
| Gnd   |             |   | ext_vcc | *see 0.13   |
| P0.17 | Serial2 TX |   | P0.31   | BATTERY_PIN |
| P0.20 | Rotary B   |   | P0.29   | DIO1         |
| P0.22 | Rotary A   |   | P0.02   | BUSY |
| P0.24 | Rotary press|   | P1.15   | NRST         |
| P1.00 | TXEN |   | P1.13   | MISO         |
| P0.11 | RXEN        |   | P1.11   | MOSI        |
| P1.04 | SDA         |   | P0.10   | SCK     |
| P1.06 | SCL   |   | P0.09   | CS       |
|       |             |   |         |             |
|       | Mid board   |   |         | Internal     |
| P1.01 | Serial2 RX |   | 0.15     | LED         |
| P1.02 | TX to GPS   |   | 0.13     | 3V3_EN       |
| P1.07 | RX from GPS |   |         |             |
*/
// Number of pins defined in PinDescription array
#define PINS_COUNT (48)
#define NUM_DIGITAL_PINS (48)
@@ -76,8 +102,13 @@ NRF52 PRO MICRO PIN ASSIGNMENT
// WIRE IC AND IIC PINS
#define WIRE_INTERFACES_COUNT 1
#ifndef EASYPROMICRO
#define PIN_WIRE_SDA (32 + 4) // P1.04
#define PIN_WIRE_SCL (0 + 11) // P0.11
#else // Easy E22 Promicro arrangement
#define PIN_WIRE_SDA (32 + 4) // P1.04
#define PIN_WIRE_SCL (32 + 6) // P1.06
#endif
// LED
#define PIN_LED1 (0 + 15) // P0.15
@@ -86,13 +117,23 @@ NRF52 PRO MICRO PIN ASSIGNMENT
#define LED_STATE_ON 1 // State when LED is lit
// Button
#ifndef EASYPROMICRO
#define BUTTON_PIN (32 + 0) // P1.00
#else // Easy E22 Promicro arrangement
#define BUTTON_PIN (0 + 6) // P0.06
#endif
// GPS
#ifndef EASYPROMICRO
#define GPS_TX_PIN (0 + 20) // P0.20 - This is data from the MCU
#define GPS_RX_PIN (0 + 22) // P0.22 - This is data from the GNSS
#define PIN_GPS_EN (0 + 24) // P0.24
#else // Easy E22 Promicro arrangement
#define GPS_TX_PIN (32 + 2) // P1.02 - This is data from the MCU
#define GPS_RX_PIN (32 + 7) // P1.07 - This is data from the GNSS
#define PIN_GPS_EN (0 + 13) // P0.13 - Use power control for GPS enable
#endif
#define GPS_UBLOX
// define GPS_DEBUG
@@ -100,12 +141,20 @@ NRF52 PRO MICRO PIN ASSIGNMENT
#define PIN_SERIAL1_TX GPS_TX_PIN
#define PIN_SERIAL1_RX GPS_RX_PIN
#define PIN_SERIAL2_RX (0 + 6) // P0.06
#define PIN_SERIAL2_TX (0 + 8) // P0.08
#ifndef EASYPROMICRO
#define PIN_SERIAL2_RX (0 + 6) // P0.06
#define PIN_SERIAL2_TX (0 + 8) // P0.08
#else // Easy E22 Promicro arrangement
#define PIN_SERIAL2_RX (32 + 1) // P1.01
#define PIN_SERIAL2_TX (0 + 17) // P0.17
// Buzzer - PWM
#define PIN_BUZZER (0 + 8) // p0.08
#endif
// Serial interfaces
#define SPI_INTERFACES_COUNT 1
#ifndef EASYPROMICRO
#define PIN_SPI_MISO (0 + 2) // P0.02
#define PIN_SPI_MOSI (32 + 15) // P1.15
#define PIN_SPI_SCK (32 + 11) // P1.11
@@ -166,7 +215,35 @@ NRF52 PRO MICRO PIN ASSIGNMENT
#define LR2021_IRQ_DIO_NUM 9 // DIO9 → P0.10
#endif
// #define SX126X_MAX_POWER 8 set this if using a high-power board!
#else // Easy E22 Promicro arrangement
#define USE_SSD1306
// #define USE_SH1106
#define USE_SX1262
#define PIN_SPI_MISO (32 + 13) // P1.13
#define PIN_SPI_MOSI (32 + 11) // P1.11
#define PIN_SPI_SCK (0 + 10) // P0.10
#define LORA_MISO PIN_SPI_MISO
#define LORA_MOSI PIN_SPI_MOSI
#define LORA_SCK PIN_SPI_SCK
#define LORA_CS (0 + 9) // P0.09 NSS
#define LORA_DIO0 (0 + 2) // P0.02 BUSY
#define LORA_DIO1 (0 + 29) // P0.29 IRQ
#define LORA_RESET (32 + 15) // P1.15 NRST
#define SX126X_CS LORA_CS
#define SX126X_DIO1 LORA_DIO1
#define SX126X_BUSY LORA_DIO0
#define SX126X_RESET LORA_RESET
#define SX126X_RXEN (0 + 11) // P0.11
#define SX126X_TXEN (32 + 0) // P1.00
#define SX126X_MAX_POWER 8 // Default to prevent damage to E22_900M33S; Comment out for others
#undef TX_GAIN_LORA
#define TX_GAIN_LORA 22 // 8 for E22 900M30S, 25 for 900M33S, 22 for 3.7V battery powered 900M33S, 0 for 900M22S
#endif
// #define SX126X_MAX_POWER 8 // set this if using a high-power board!
/*
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