91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* File : board.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2017, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "board.h"
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#include "drv_uart.h"
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void rt_hw_timer_isr(int vector, void *parameter)
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{
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ARM_TIMER_IRQCLR = 0;
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rt_tick_increase();
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}
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int rt_hw_timer_init(void)
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{
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/* timer_clock = apb_clock/(pre_divider + 1) */
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ARM_TIMER_PREDIV = (250 - 1);
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ARM_TIMER_RELOAD = 0;
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ARM_TIMER_LOAD = 0;
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ARM_TIMER_IRQCLR = 0;
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ARM_TIMER_CTRL = 0;
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ARM_TIMER_RELOAD = 10000;
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ARM_TIMER_LOAD = 10000;
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/* 23-bit counter, enable interrupt, enable timer */
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ARM_TIMER_CTRL = (1 << 1) | (1 << 5) | (1 << 7);
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rt_hw_interrupt_install(IRQ_ARM_TIMER, rt_hw_timer_isr, RT_NULL, "tick");
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rt_hw_interrupt_umask(IRQ_ARM_TIMER);
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return 0;
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}
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void vector_copy(void)
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{
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rt_memcpy((void*)0x0, (void*)0x8000, 64);
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}
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void rt_hw_board_init(void)
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{
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/* initialize hardware interrupt */
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rt_hw_interrupt_init();
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vector_copy();
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/* initialize uart */
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rt_hw_uart_init();
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#ifdef RT_USING_CONSOLE
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/* set console device */
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif /* RT_USING_CONSOLE */
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#ifdef RT_USING_HEAP
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/* initialize memory system */
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rt_kprintf("heap: 0x%08x - 0x%08x\n", RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
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rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
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#endif
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/* initialize timer for os tick */
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// rt_hw_timer_init();
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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}
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