kopia lustrzana https://github.com/micropython/micropython
69 wiersze
2.9 KiB
C
69 wiersze
2.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Daniel Campora
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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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#include <stdint.h>
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#include <stdbool.h>
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#include "hal/utils.h"
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#include "hal/systick.h"
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/******************************************************************************
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DEFINE CONSTANTS
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******************************************************************************/
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#define HAL_FCPU_MHZ 80U
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#define HAL_FCPU_HZ (1000000U * HAL_FCPU_MHZ)
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#define HAL_SYSTICK_PERIOD_US 1000U
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#define UTILS_DELAY_US_TO_COUNT(us) (((us) * HAL_FCPU_MHZ) / 6)
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#define HAL_NVIC_INT_CTRL_REG (*((volatile uint32_t *) 0xE000ED04 ) )
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#define HAL_VECTACTIVE_MASK (0x1FUL)
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/******************************************************************************
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DEFINE TYPES
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******************************************************************************/
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/******************************************************************************
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DEFINE FUNCTION-LIKE MACROS
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******************************************************************************/
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#define HAL_INTRODUCE_SYNC_BARRIER() { \
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__asm(" dsb \n" \
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" isb \n"); \
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}
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/******************************************************************************
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DECLARE PUBLIC FUNCTIONS
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******************************************************************************/
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extern void HAL_SystemInit (void);
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extern void HAL_SystemDeInit (void);
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extern void HAL_IncrementTick(void);
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extern void mp_hal_set_interrupt_char (int c);
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#define mp_hal_delay_us(usec) UtilsDelay(UTILS_DELAY_US_TO_COUNT(usec))
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#define mp_hal_ticks_cpu() (SysTickPeriodGet() - SysTickValueGet())
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