90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
/*
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* This file is part of the Micro Python 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) 2018 hathach 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 "nrfx.h"
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#include "nrfx_power.h"
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#include "tick.h"
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#include "supervisor/usb.h"
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#include "lib/utils/interrupt_char.h"
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#include "lib/mp-readline/readline.h"
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#ifdef SOFTDEVICE_PRESENT
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#include "nrf_sdm.h"
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#include "nrf_soc.h"
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#endif
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// tinyusb function that handles power event (detected, ready, removed)
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// We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
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extern void tusb_hal_nrf_power_event(uint32_t event);
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void init_usb_hardware(void) {
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// 2 is max priority (0, 1 are reserved for SD)
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NVIC_SetPriority(USBD_IRQn, 2);
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// USB power may already be ready at this time -> no event generated
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// We need to invoke the handler based on the status initially for the first call
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static bool first_call = true;
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uint32_t usb_reg;
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#ifdef SOFTDEVICE_PRESENT
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uint8_t sd_en = false;
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(void) sd_softdevice_is_enabled(&sd_en);
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if ( sd_en ) {
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sd_power_usbdetected_enable(true);
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sd_power_usbpwrrdy_enable(true);
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sd_power_usbremoved_enable(true);
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sd_power_usbregstatus_get(&usb_reg);
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}else
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#endif
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{
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// Power module init
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const nrfx_power_config_t pwr_cfg = { 0 };
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nrfx_power_init(&pwr_cfg);
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// Register tusb function as USB power handler
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const nrfx_power_usbevt_config_t config = { .handler = (nrfx_power_usb_event_handler_t) tusb_hal_nrf_power_event };
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nrfx_power_usbevt_init(&config);
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nrfx_power_usbevt_enable();
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usb_reg = NRF_POWER->USBREGSTATUS;
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}
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if ( first_call ) {
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first_call = false;
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if ( usb_reg & POWER_USBREGSTATUS_VBUSDETECT_Msk ) {
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tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_DETECTED);
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}
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if ( usb_reg & POWER_USBREGSTATUS_OUTPUTRDY_Msk ) {
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tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_READY);
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}
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}
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}
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