mirror of
https://github.com/bluekitchen/btstack.git
synced 2025-01-18 19:21:54 +00:00
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*******************************************************************************
|
|
* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
|
|
* Author: Ismail H. Kose <ismail.kose@maximintegrated.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
|
|
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name of Maxim Integrated
|
|
* Products, Inc. shall not be used except as stated in the Maxim Integrated
|
|
* Products, Inc. Branding Policy.
|
|
*
|
|
* The mere transfer of this software does not imply any licenses
|
|
* of trade secrets, proprietary technology, copyrights, patents,
|
|
* trademarks, maskwork rights, or any other form of intellectual
|
|
* property whatsoever. Maxim Integrated Products, Inc. retains all
|
|
* ownership rights.
|
|
*******************************************************************************
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "board.h"
|
|
|
|
/***** Definitions *****/
|
|
#define USE_RTC_SYSTEM_CLK 0
|
|
#define SYSTICK_PERIOD_EXT_CLK 32767
|
|
|
|
/* Trigger interrupt every second */
|
|
static const uint32_t sysTicks = SYSTICK_PERIOD_EXT_CLK;
|
|
static volatile uint32_t sys_tick_sec = 0;
|
|
|
|
int32_t hal_tick_init(void)
|
|
{
|
|
uint32_t ret;
|
|
ret = SYS_SysTick_Config(sysTicks, USE_RTC_SYSTEM_CLK);
|
|
printf("SysTick Clock = %d Hz\n", SYS_SysTick_GetFreq());
|
|
if(ret != E_NO_ERROR) {
|
|
printf("ERROR: Ticks is not valid");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void SysTick_Handler(void)
|
|
{
|
|
sys_tick_sec++;
|
|
}
|
|
|
|
uint64_t hal_get_tick(void)
|
|
{
|
|
uint32_t usec_tick;
|
|
uint64_t tick_sec;
|
|
uint32_t systick_val = SysTick->VAL;
|
|
uint32_t _sys_tick_sec = sys_tick_sec;
|
|
uint32_t sys_freq = SYS_SysTick_GetFreq();
|
|
|
|
usec_tick = ((uint64_t)(sysTicks - systick_val) * 1000000) / sys_freq;
|
|
if (systick_val == 0) // to protect time overflow
|
|
_sys_tick_sec -= 1;
|
|
tick_sec = _sys_tick_sec * 1000000 + usec_tick;
|
|
return tick_sec;
|
|
}
|
|
|
|
void hal_delay_ms(unsigned int ms)
|
|
{
|
|
uint64_t prev_tick = hal_get_tick();
|
|
uint64_t wait_time = ms * 1000;
|
|
uint64_t curr_tick;
|
|
int64_t diff;
|
|
|
|
while(1) {
|
|
curr_tick = hal_get_tick();
|
|
diff = curr_tick - prev_tick;
|
|
if (diff > wait_time) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void hal_delay_us(unsigned int us)
|
|
{
|
|
uint64_t prev_tick = hal_get_tick();
|
|
uint64_t wait_time = us;
|
|
uint64_t curr_tick;
|
|
int64_t diff;
|
|
|
|
while(1) {
|
|
curr_tick = hal_get_tick();
|
|
diff = curr_tick - prev_tick;
|
|
if (diff > wait_time) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint32_t hal_get_time_ms(void)
|
|
{
|
|
uint32_t usec_tick;
|
|
uint64_t tick_sec;
|
|
uint32_t systick_val = SysTick->VAL;
|
|
uint32_t _sys_tick_sec = sys_tick_sec;
|
|
uint32_t sys_freq = SYS_SysTick_GetFreq();
|
|
|
|
usec_tick = ((uint64_t)(sysTicks - systick_val) * 1000) / sys_freq;
|
|
if (systick_val == 0) // to protect time overflow
|
|
_sys_tick_sec -= 1;
|
|
tick_sec = _sys_tick_sec * 1000 + usec_tick;
|
|
return tick_sec;
|
|
}
|
|
|
|
uint32_t hal_time_ms(void)
|
|
{
|
|
return hal_get_time_ms();
|
|
}
|