You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1009 B
42 lines
1009 B
5 months ago
|
/*
|
||
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2015-04-29 ArdaFu first version
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "timer0.h"
|
||
|
|
#include "asm9260t.h"
|
||
|
|
#include "rtthread.h"
|
||
|
|
void hw_timer0_init(void)
|
||
|
|
{
|
||
|
|
uint32_t pclk;
|
||
|
|
|
||
|
|
// enable timer0's clock, reset timer0
|
||
|
|
outl((1<<4), REG_SET(HW_AHBCLKCTRL1));
|
||
|
|
outl((1<<4), REG_CLR(HW_PRESETCTRL1));
|
||
|
|
outl((1<<4), REG_SET(HW_PRESETCTRL1));
|
||
|
|
|
||
|
|
outl((1<<0), REG_CLR(HW_TIMER0_TCR));
|
||
|
|
|
||
|
|
outl((3<<0), REG_CLR(HW_TIMER0_CTCR));
|
||
|
|
|
||
|
|
outl((3<<0), REG_CLR(HW_TIMER0_DIR));
|
||
|
|
|
||
|
|
outl(0, REG_CLR(HW_TIMER0_PR));
|
||
|
|
outl(0, REG_CLR(HW_TIMER0_PC));
|
||
|
|
|
||
|
|
outl((7<<0), REG_CLR(HW_TIMER0_MCR));
|
||
|
|
outl((3<<0), REG_SET(HW_TIMER0_MCR));
|
||
|
|
|
||
|
|
pclk = (inl(HW_SYSPLLCTRL)&0x1FF)*1000000u/4u;
|
||
|
|
outl(pclk/RT_TICK_PER_SECOND, HW_TIMER0_MR0);
|
||
|
|
|
||
|
|
outl((1<<4), REG_SET(HW_TIMER0_TCR));
|
||
|
|
outl((1<<4), REG_CLR(HW_TIMER0_TCR));
|
||
|
|
outl((1<<0), REG_SET(HW_TIMER0_TCR));
|
||
|
|
}
|