111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2022 Jerzy Kasenberg
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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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* This file is part of the TinyUSB stack.
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <xc.h>
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#include "tusb.h"
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void __attribute__((interrupt(IPL2AUTO), vector(_USB_VECTOR), no_fpu))
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USBD_IRQHandler(void)
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{
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IFS4CLR = _IFS4_USBIF_MASK;
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tud_int_handler(0);
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}
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TU_ATTR_WEAK void button_init(void)
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{
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}
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TU_ATTR_WEAK void led_init(void)
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{
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}
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TU_ATTR_WEAK void uart_init(void)
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{
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}
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void board_init(void)
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{
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button_init();
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led_init();
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uart_init();
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// Force device mode by overriding USB ID and settings it to 1
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USBCRCONbits.PHYIDEN = 0;
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USBCRCONbits.USBIDVAL = 1;
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USBCRCONbits.USBIDOVEN = 1;
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// set interrupt priority (must much IPL2AUTO)
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IPC33CLR = _IPC33_USBIP_MASK;
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IPC33SET = (2 << _IPC33_USBIP_POSITION);
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// set interrupt subpriority
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IPC33CLR = _IPC33_USBIS_MASK;
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IPC33SET = (0 << _IPC33_USBIS_POSITION);
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USBCRCONbits.USBIE = 0;
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IFS4CLR = _IFS4_USBIF_MASK;
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IEC4SET = _IEC4_USBIE_MASK;
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__builtin_enable_interrupts();
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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TU_ATTR_WEAK void board_led_write(bool state)
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{
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(void) state;
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}
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TU_ATTR_WEAK uint32_t board_button_read(void)
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{
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return 0;
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}
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TU_ATTR_WEAK int board_uart_read(uint8_t * buf, int len)
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{
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(void) buf;
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(void) len;
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return 0;
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}
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TU_ATTR_WEAK int board_uart_write(void const * buf, int len)
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{
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(void) buf;
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return len;
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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uint32_t board_millis(void)
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{
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// COUNTER is system clock (200MHz / 2 = 100MHz) convert to ms)
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return _CP0_GET_COUNT() / (100000000 / 1000);
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}
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#endif
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