/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "supervisor/board.h" #include "nrf.h" #include "nrf_rtc.h" void board_init(void) { // Initializations below from Arduino variant.cpp. // // turn power LED on // pinMode(LED_PWR, OUTPUT); // digitalWrite(LED_PWR, HIGH); // Errata Nano33BLE - I2C pullup is on SWO line, need to disable TRACE // was being enabled by nrfx_clock_anomaly_132 CoreDebug->DEMCR = 0; NRF_CLOCK->TRACECONFIG = 0; // FIXME: bootloader enables interrupt on COMPARE[0], which we don't handle // Disable it here to avoid getting stuck when OVERFLOW irq is triggered nrf_rtc_event_disable(NRF_RTC1, NRF_RTC_INT_COMPARE0_MASK); nrf_rtc_int_disable(NRF_RTC1, NRF_RTC_INT_COMPARE0_MASK); // // FIXME: always enable I2C pullup and power @startup // // Change for maximum powersave // pinMode(PIN_ENABLE_SENSORS_3V3, OUTPUT); // pinMode(PIN_ENABLE_I2C_PULLUP, OUTPUT); // digitalWrite(PIN_ENABLE_SENSORS_3V3, HIGH); // digitalWrite(PIN_ENABLE_I2C_PULLUP, HIGH); }