Add Elecrow ThinkNode M8 board support (thinknode_m8) (#11226)

* Add Elecrow ThinkNode M8 variant scaffold (thinknode_m8) nRF52840 + SX1262 + 2.4" e-paper + ATGM336H-5NR32 GPS. All pins resolved from ThinkNode_M8_V0.3.sch; cross-checked against meshtastic/firmware#9181 (Elecrow V0.1 reference). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * Add Elecrow ThinkNode M8 board support (nRF52840/SX1262, 1.54in e-ink, ATGM336H GNSS, SC7A20, EC04 encoder) * Address review: keep the stored backlight level out of blanking, match only the SC7A20 WHO_AM_I byte, and transfer detents atomically * Use std::atomic for the press-and-turn detent counter so native builds compile * Drop the ThinkNode M8 LED_BUILTIN redefinition that warned on every translation unit --------- Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com> Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-07-30 15:59:35 +00:00
parent 84322af4e0
commit 597f6767b5
22 changed files with 641 additions and 33 deletions
@@ -0,0 +1,75 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library 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 Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "main.h"
+#include "nrf.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+#include <Wire.h>
+
+const uint32_t g_ADigitalPinMap[] = {
+    // P0 - pins 0 and 1 are hardwired for xtal and should never be enabled
+    0xff, 0xff, 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,
+
+    // P1
+    32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47};
+
+void initVariant()
+{
+    pinMode(I2C_EN, OUTPUT);
+    digitalWrite(I2C_EN, HIGH);
+    pinMode(VCC_ELNK_EN, OUTPUT);
+    digitalWrite(VCC_ELNK_EN, HIGH);
+    pinMode(PIN_GPS_EN, OUTPUT);
+    digitalWrite(PIN_GPS_EN, HIGH);
+    pinMode(ADC_EN, OUTPUT);
+    digitalWrite(ADC_EN, HIGH);
+    Wire.setPins(PIN_WIRE_SDA, PIN_WIRE_SCL);
+}
+
+void variant_shutdown()
+{
+    auto dispdev = screen->getDisplayDevice();
+    dispdev->resetDisplay();
+    screen->forceDisplay();
+    delay(500);
+    digitalWrite(I2C_EN, LOW);
+    digitalWrite(VCC_ELNK_EN, LOW);
+    digitalWrite(PIN_GPS_EN, LOW);
+    digitalWrite(ADC_EN, LOW);
+    for (int pin = 0; pin < 48; pin++) {
+        if (pin == I2C_EN || pin == VCC_ELNK_EN || pin == PIN_GPS_EN || pin == ADC_EN || pin == PIN_BUTTON1 ||
+            pin == SX1262_SPI_NSS_PIN || pin == SX1262_SPI_SCK_PIN || pin == SX1262_SPI_MOSI_PIN || pin == SX1262_SPI_MISO_PIN ||
+            pin == SX1262_IRQ_PIN || pin == SX1262_NRESET_PIN || pin == SX126X_BUSY) {
+            continue;
+        }
+        pinMode(pin, OUTPUT);
+        digitalWrite(pin, LOW);
+        if (pin >= 32) {
+            NRF_P1->DIRCLR = (1 << (pin - 32));
+        } else {
+            NRF_GPIO->DIRCLR = (1 << pin);
+        }
+    }
+    nrf_gpio_cfg_input(PIN_BUTTON1, NRF_GPIO_PIN_PULLUP); // Configure the pin to be woken up as an input
+    nrf_gpio_pin_sense_t sense1 = NRF_GPIO_PIN_SENSE_LOW;
+    nrf_gpio_cfg_sense_set(PIN_BUTTON1, sense1);
+}