d73f390a4d
This also expose the battery control pin as BATTERY_ENABLE, so users can fully power off the keyboard.
64 lines
2.6 KiB
C
64 lines
2.6 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) 2017 Scott Shawcroft for Adafruit Industries
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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 "supervisor/board.h"
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#include "supervisor/shared/board.h"
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#include "mpconfigboard.h"
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static void power_on(void) {
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// turn on internal battery
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nrf_gpio_cfg(POWER_SWITCH_PIN->number,
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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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NRF_GPIO_PIN_S0S1,
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NRF_GPIO_PIN_NOSENSE);
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nrf_gpio_pin_write(POWER_SWITCH_PIN->number, true);
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}
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static void preserve_and_release_battery_pin(void) {
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// Preserve the battery state. The battery is enabled by default in factory bootloader.
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// Reset claimed_pins so user can control pin's state in the vm.
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// The code below doesn't actually reset the pin's state, but only set the flags.
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reset_pin_number(POWER_SWITCH_PIN->number); // clear claimed_pins and never_reset_pins
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never_reset_pin_number(POWER_SWITCH_PIN->number); // set never_reset_pins
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}
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void board_init(void) {
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// As of cpy 8.1.0, board_init() runs after reset_ports() on first run. That means
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// never_reset_pins won't be set at boot, the battery pin is reset, causing system
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// shutdown.
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// So if we need to run on battery, we must enable the battery here.
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power_on();
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preserve_and_release_battery_pin();
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}
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void reset_board(void) {
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preserve_and_release_battery_pin();
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}
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// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
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