Steve Karg
fdd49f1791
* Added pretty-apps and pretty-ports make targets * pretty-fied apps folder C files * Pretty-fied ports folder C and H files Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2011 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in 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,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*********************************************************************/
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#include <stdbool.h>
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#include <stdint.h>
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#include "hardware.h"
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#include "bacnet/basic/sys/mstimer.h"
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/* counter for the the timer which wraps every 49.7 days */
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static volatile uint32_t Millisecond_Counter;
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/* forward prototype for interrupt service routine */
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void int_cmt0_isr(void);
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/*************************************************************************
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* Description: Timer Interrupt Handler
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* Returns: nothing
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* Notes: none
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*************************************************************************/
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static void timer_interrupt_handler(void)
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{
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Millisecond_Counter++;
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}
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/*************************************************************************
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* Description: Timer Interrupt Service Routine
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* Returns: nothing
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* Notes: none
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*************************************************************************/
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void int_cmt0_isr(void)
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{
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timer_interrupt_handler();
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}
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/*************************************************************************
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* Description: returns the current millisecond count
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* Returns: none
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* Notes: This method only disables the timer overflow interrupt.
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*************************************************************************/
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unsigned long mstimer_now(void)
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{
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unsigned long timer_value; /* return value */
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timer_value = Millisecond_Counter;
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return timer_value;
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}
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/*************************************************************************
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* Description: Initialization for Timer
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* Returns: none
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* Notes: none
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*************************************************************************/
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void timer_init(void)
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{
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/* Declare error flag */
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bool err = true;
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/* CMT is configured for a 1ms interval, and executes the callback
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function CB_CompareMatch on every compare match */
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err &= R_CMT_Create(3, PDL_CMT_PERIOD, 1E-3, int_cmt0_isr, 3);
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/* Halt in while loop when RPDL errors detected */
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while (!err)
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;
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}
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