131 lines
3.2 KiB
C
131 lines
3.2 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 <malloc.h>
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#include <irqflags.h>
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#include <f1c100s-irq.h>
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#include "bsp/board_api.h"
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#include "board.h"
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extern void sys_uart_putc(char c);
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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static void timer_init(void);
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void board_init(void)
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{
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arch_local_irq_disable();
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do_init_mem_pool();
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f1c100s_intc_init();
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timer_init();
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printf("Timer INIT done\n");
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arch_local_irq_enable();
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}
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// No LED, no button
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void board_led_write(bool state)
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{
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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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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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int txsize = len;
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while (txsize--) {
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sys_uart_putc(*(uint8_t const*)buf);
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buf++;
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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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volatile uint32_t system_ticks = 0;
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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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static void timer_handler(void)
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{
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volatile uint32_t *temp_addr = (uint32_t *)(0x01C20C00 + 0x04);
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/* clear timer */
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*temp_addr |= 0x01;
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system_ticks++;
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}
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static void timer_init(void) {
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uint32_t temp;
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volatile uint32_t *temp_addr;
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/* reload value */
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temp = 12000000 / 1000;
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temp_addr = (uint32_t *)(0x01C20C00 + 0x14);
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*temp_addr = temp;
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/* continuous | /2 | 24Mhz | reload*/
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temp = (0x00 << 7) | (0x01 << 4) | (0x01 << 2) | (0x00 << 1);
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temp_addr = (uint32_t *)(0x01C20C00 + 0x10);
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*temp_addr &= 0xffffff00;
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*temp_addr |= temp;
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/* open timer irq */
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temp = 0x01 << 0;
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temp_addr = (uint32_t *)(0x01C20C00);
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*temp_addr |= temp;
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/* set init value */
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temp_addr = (uint32_t *)(0x01C20C00 + 0x18);
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*temp_addr = 0;
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/* begin run timer */
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temp = 0x01 << 0;
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temp_addr = (uint32_t *)(0x01C20C00 + 0x10);
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*temp_addr |= temp;
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f1c100s_intc_set_isr(F1C100S_IRQ_TIMER0, timer_handler);
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f1c100s_intc_enable_irq(F1C100S_IRQ_TIMER0);
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}
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#else
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static void timer_init(void) { }
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#endif
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