121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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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 "../board.h"
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#include "csr.h"
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#include "irq.h"
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void fomu_error(uint32_t line)
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{
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(void)line;
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TU_BREAKPOINT();
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}
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volatile uint32_t system_ticks = 0;
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static void timer_init(void)
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{
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int t;
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timer0_en_write(0);
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t = CONFIG_CLOCK_FREQUENCY / 1000; // 1000 kHz tick
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timer0_reload_write(t);
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timer0_load_write(t);
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timer0_en_write(1);
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timer0_ev_enable_write(1);
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timer0_ev_pending_write(1);
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irq_setmask(irq_getmask() | (1 << TIMER0_INTERRUPT));
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}
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void isr(void)
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{
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unsigned int irqs;
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irqs = irq_pending() & irq_getmask();
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#if CFG_TUD_ENABLED
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if (irqs & (1 << USB_INTERRUPT)) {
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tud_int_handler(0);
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}
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#endif
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if (irqs & (1 << TIMER0_INTERRUPT)) {
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system_ticks++;
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timer0_ev_pending_write(1);
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}
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}
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void board_init(void)
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{
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irq_setmask(0);
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irq_setie(1);
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timer_init();
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return;
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}
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void board_led_write(bool state)
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{
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rgb_ctrl_write(0xff);
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rgb_raw_write(state);
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}
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uint32_t board_button_read(void)
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{
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return 0;
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}
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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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int board_uart_write(void const * buf, int len)
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{
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int32_t offset = 0;
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uint8_t const* buf8 = (uint8_t const*) buf;
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for (offset = 0; offset < len; offset++)
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{
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if (!(messible_status_read() & CSR_MESSIBLE_STATUS_FULL_OFFSET))
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{
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messible_in_write(buf8[offset]);
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}
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}
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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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return system_ticks;
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}
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#endif
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