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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 hathach 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 "nrfx.h"
#include "nrfx_power.h"
#include "supervisor/usb.h"
#include "lib/utils/interrupt_char.h"
#include "lib/mp-readline/readline.h"
#include "lib/tinyusb/src/device/usbd.h"
#include "supervisor/background_callback.h"
#ifdef SOFTDEVICE_PRESENT
#include "nrf_sdm.h"
#include "nrf_soc.h"
#endif
// tinyusb function that handles power event (detected, ready, removed)
// We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
extern void tusb_hal_nrf_power_event(uint32_t event);
void init_usb_hardware(void) {
// 2 is max priority (0, 1, and 4 are reserved for SD)
// 5 is max priority that still allows calling SD functions such as
// sd_softdevice_is_enabled
NVIC_SetPriority(USBD_IRQn, 2);
// USB power may already be ready at this time -> no event generated
// We need to invoke the handler based on the status initially for the first call
static bool first_call = true;
uint32_t usb_reg;
#ifdef SOFTDEVICE_PRESENT
uint8_t sd_en = false;
(void)sd_softdevice_is_enabled(&sd_en);
if (sd_en) {
sd_power_usbdetected_enable(true);
sd_power_usbpwrrdy_enable(true);
sd_power_usbremoved_enable(true);
sd_power_usbregstatus_get(&usb_reg);
} else
#endif
{
// Power module init
const nrfx_power_config_t pwr_cfg = { 0 };
nrfx_power_init(&pwr_cfg);
// Register tusb function as USB power handler
const nrfx_power_usbevt_config_t config = { .handler = (nrfx_power_usb_event_handler_t)tusb_hal_nrf_power_event };
nrfx_power_usbevt_init(&config);
nrfx_power_usbevt_enable();
usb_reg = NRF_POWER->USBREGSTATUS;
}
if (first_call) {
first_call = false;
if (usb_reg & POWER_USBREGSTATUS_VBUSDETECT_Msk) {
tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_DETECTED);
}
if (usb_reg & POWER_USBREGSTATUS_OUTPUTRDY_Msk) {
tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_READY);
}
}
}
void USBD_IRQHandler(void) {
usb_irq_handler();
}
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