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564945a2a0
It keeps compatibility with the XIAO bootloader by: - using Soft Device 7.3.0 - reserving 48k memory for the bootloader. So on double reset a drive pops for uploading an uf2 image or a nrfutil zip pkg file. Instructions to create it from a hex file are included. The bootloader can as well be activated with the touch 1200 option of nrfutil. The script download_ble_stack.sh has been adapted to get the version 7.3.0 soft device files. It may have to be executed once before building. The file system is set to 256k and the pin definitions are adapted. Besides that, it has the common functionality and omissions. The on-board sensors and additional flash can be supported by Python scripts.
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2022 Arduino SA
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "nrf.h"
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#include "nrf_gpio.h"
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#include "nrf_rtc.h"
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#define PIN_ENABLE_SENSORS_3V3 (40)
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#define DFU_MAGIC_SERIAL_ONLY_RESET 0x4e
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#define DFU_MAGIC_UF2_RESET 0x57
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#define DFU_MAGIC_OTA_RESET 0xA8
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void XIAO_board_early_init(void) {
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// Errata XIAOBLE - I2C pullup is on SWO line, need to disable TRACE
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// was being enabled by nrfx_clock_anomaly_132
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CoreDebug->DEMCR = 0;
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NRF_CLOCK->TRACECONFIG = 0;
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// Bootloader enables interrupt on COMPARE[0], which we don't handle
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// Disable it here to avoid getting stuck when OVERFLOW irq is triggered
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nrf_rtc_event_disable(NRF_RTC1, NRF_RTC_INT_COMPARE0_MASK);
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nrf_rtc_int_disable(NRF_RTC1, NRF_RTC_INT_COMPARE0_MASK);
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// Always enable IMU power and I2C Pull-up on startup
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nrf_gpio_cfg(PIN_ENABLE_SENSORS_3V3,
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NRF_GPIO_PIN_DIR_OUTPUT,
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NRF_GPIO_PIN_INPUT_DISCONNECT,
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NRF_GPIO_PIN_NOPULL,
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GPIO_PIN_CNF_DRIVE_S0H1,
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NRF_GPIO_PIN_NOSENSE);
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nrf_gpio_pin_set(PIN_ENABLE_SENSORS_3V3);
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}
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void XIAO_board_deinit(void) {
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nrf_gpio_cfg_output(PIN_ENABLE_SENSORS_3V3);
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nrf_gpio_pin_clear(PIN_ENABLE_SENSORS_3V3);
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}
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void XIAO_board_enter_bootloader(void) {
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__disable_irq();
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NRF_POWER->GPREGRET = DFU_MAGIC_UF2_RESET;
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NVIC_SystemReset();
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}
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