60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-01-28 flybreak first version
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <stdio.h>
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#include "board.h"
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#include "hardware/structs/systick.h"
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uint8_t heap[1024 * 80];
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void isr_systick(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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uint32_t systick_config(uint32_t ticks)
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{
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if ((ticks - 1UL) > M0PLUS_SYST_RVR_RELOAD_BITS)
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{
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return (1UL); /* Reload value impossible */
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}
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mpu_hw->rvr = (uint32_t)(ticks - 1UL); /* set reload register */
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mpu_hw->csr = M0PLUS_SYST_CSR_CLKSOURCE_BITS |
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M0PLUS_SYST_CSR_TICKINT_BITS |
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M0PLUS_SYST_CSR_ENABLE_BITS; /* Enable SysTick IRQ and SysTick Timer */
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return (0UL); /* Function successful */
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}
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void rt_hw_board_init()
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{
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/* Configure the SysTick */
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systick_config(frequency_count_khz(CLOCKS_FC0_SRC_VALUE_ROSC_CLKSRC)*10000/RT_TICK_PER_SECOND);
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rt_system_heap_init(heap, (uint8_t *)heap + sizeof(heap));
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stdio_init_all();
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rt_hw_uart_init();
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#ifdef RT_USING_CONSOLE
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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}
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