182 lines
4.8 KiB
C
182 lines
4.8 KiB
C
/*
|
|
* File : board.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2017-09-14 Haley first implementation
|
|
*/
|
|
#include "board.h"
|
|
|
|
#include <rtthread.h>
|
|
#include <rthw.h>
|
|
|
|
#include "am_mcu_apollo.h"
|
|
#include "hal/am_hal_clkgen.h"
|
|
#include "hal/am_hal_cachectrl.h"
|
|
#include "uart.h"
|
|
#include "led.h"
|
|
|
|
#ifdef __CC_ARM
|
|
extern int Image$$RW_IRAM1$$ZI$$Limit;
|
|
#define AM_SRAM_BEGIN (&Image$$RW_IRAM1$$ZI$$Limit)
|
|
#elif __ICCARM__
|
|
#pragma section="HEAP"
|
|
#define AM_SRAM_BEGIN (__segment_end("HEAP"))
|
|
#else
|
|
extern int __bss_end;
|
|
#define AM_SRAM_BEGIN (&__bss_end)
|
|
#endif
|
|
|
|
#define TICK_RATE_HZ RT_TICK_PER_SECOND
|
|
#define SYSTICK_CLOCK_HZ ( 32768UL )
|
|
#define WAKE_INTERVAL ( (uint32_t) ((SYSTICK_CLOCK_HZ / TICK_RATE_HZ)))
|
|
|
|
/**
|
|
* This is the timer interrupt service routine.
|
|
*
|
|
*/
|
|
void am_stimer_cmpr0_isr(void)
|
|
{
|
|
/* Check the timer interrupt status */
|
|
am_hal_stimer_int_clear(AM_HAL_STIMER_INT_COMPAREA);
|
|
am_hal_stimer_compare_delta_set(0, WAKE_INTERVAL);
|
|
|
|
if (rt_thread_self() != RT_NULL)
|
|
{
|
|
/* enter interrupt */
|
|
rt_interrupt_enter();
|
|
|
|
rt_tick_increase();
|
|
|
|
/* leave interrupt */
|
|
rt_interrupt_leave();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is the SysTick Configure.
|
|
*
|
|
*/
|
|
void SysTick_Configuration(void)
|
|
{
|
|
/* Enable compare A interrupt in STIMER */
|
|
am_hal_stimer_int_enable(AM_HAL_STIMER_INT_COMPAREA);
|
|
|
|
/* Enable the timer interrupt in the NVIC, making sure to use the appropriate priority level */
|
|
am_hal_interrupt_enable(AM_HAL_INTERRUPT_STIMER_CMPR0);
|
|
|
|
/* Configure the STIMER and run */
|
|
am_hal_stimer_config(AM_HAL_STIMER_CFG_CLEAR | AM_HAL_STIMER_CFG_FREEZE);
|
|
am_hal_stimer_compare_delta_set(0, WAKE_INTERVAL);
|
|
am_hal_stimer_config(AM_HAL_STIMER_XTAL_32KHZ |
|
|
AM_HAL_STIMER_CFG_COMPARE_A_ENABLE);
|
|
}
|
|
|
|
/**
|
|
* This is the low power operation.
|
|
* This function enables several power-saving features of the MCU, and
|
|
* disables some of the less-frequently used peripherals. It also sets the
|
|
* system clock to 24 MHz.
|
|
*/
|
|
void am_low_power_init(void)
|
|
{
|
|
/* Enable internal buck converters */
|
|
am_hal_pwrctrl_bucks_init();
|
|
|
|
/* Initialize for low power in the power control block */
|
|
am_hal_pwrctrl_low_power_init();
|
|
|
|
/* Turn off the voltage comparator as this is enabled on reset */
|
|
am_hal_vcomp_disable();
|
|
|
|
/* Run the RTC off the LFRC */
|
|
am_hal_rtc_osc_select(AM_HAL_RTC_OSC_LFRC);
|
|
|
|
/* Stop the XT and LFRC */
|
|
am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_XT);
|
|
am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_LFRC);
|
|
|
|
/* Disable the RTC */
|
|
am_hal_rtc_osc_disable();
|
|
}
|
|
|
|
/**
|
|
* This is the deep power save.
|
|
*
|
|
*/
|
|
void deep_power_save(void)
|
|
{
|
|
am_hal_interrupt_master_disable();
|
|
|
|
am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_DEEP);
|
|
|
|
am_hal_interrupt_master_enable();
|
|
}
|
|
|
|
/**
|
|
* This function will initial APOLLO2 board.
|
|
*/
|
|
void rt_hw_board_init(void)
|
|
{
|
|
/* Set the system clock to maximum frequency */
|
|
am_hal_clkgen_sysclk_select(AM_HAL_CLKGEN_SYSCLK_MAX);
|
|
|
|
/* Set the default cache configuration */
|
|
am_hal_cachectrl_enable(&am_hal_cachectrl_defaults);
|
|
|
|
/* Configure the board for low power operation */
|
|
am_low_power_init();
|
|
|
|
/* Config SysTick */
|
|
SysTick_Configuration();
|
|
|
|
#ifdef RT_USING_IDLE_HOOK
|
|
/* Set sleep deep mode */
|
|
rt_thread_idle_sethook(deep_power_save);
|
|
|
|
#ifndef NO_FPU
|
|
/* Enable the floating point module, and configure the core for lazy stacking */
|
|
am_hal_sysctrl_fpu_enable();
|
|
am_hal_sysctrl_fpu_stacking_enable(true);
|
|
#else
|
|
am_hal_sysctrl_fpu_disable();
|
|
#endif
|
|
|
|
/* Turn off unused Flash & SRAM */
|
|
am_hal_pwrctrl_memory_enable(AM_HAL_PWRCTRL_MEMEN_FLASH512K);
|
|
am_hal_pwrctrl_memory_enable(AM_HAL_PWRCTRL_MEMEN_SRAM32K);
|
|
|
|
#endif
|
|
|
|
#ifdef RT_USING_CONSOLE
|
|
rt_hw_uart_init();
|
|
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
|
|
#endif
|
|
|
|
#ifdef RT_USING_COMPONENTS_INIT
|
|
rt_components_board_init();
|
|
#endif
|
|
|
|
#ifdef RT_USING_HEAP
|
|
rt_system_heap_init((void*)AM_SRAM_BEGIN, (void*)AM_SRAM_END);
|
|
#endif
|
|
}
|
|
|
|
/*@}*/
|