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@@ -1,11 +1,21 @@
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/*
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* File : board.c
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* This file is part of RT-Thread RTOS
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- * COPYRIGHT (C) 2009 RT-Thread Develop Team
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+ * COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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*
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- * The license and distribution terms for this file may be
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- * found in the file LICENSE in this distribution or at
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- * http://www.rt-thread.org/license/LICENSE
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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@@ -19,11 +29,23 @@
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#include "am_mcu_apollo.h"
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#include "hal/am_hal_clkgen.h"
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#include "hal/am_hal_cachectrl.h"
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-#include "hw_uart.h"
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+#include "uart.h"
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+#include "led.h"
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+
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+#ifdef __CC_ARM
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+extern int Image$$RW_IRAM1$$ZI$$Limit;
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+#define AM_SRAM_BEGIN (&Image$$RW_IRAM1$$ZI$$Limit)
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+#elif __ICCARM__
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+#pragma section="HEAP"
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+#define AM_SRAM_BEGIN (__segment_end("HEAP"))
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+#else
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+extern int __bss_end;
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+#define NRF_SRAM_BEGIN (&__bss_end)
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+#endif
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#define TICK_RATE_HZ RT_TICK_PER_SECOND
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#define SYSTICK_CLOCK_HZ ( 32768UL )
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-#define WAKE_INTERVAL ( (uint32_t) ((SYSTICK_CLOCK_HZ / TICK_RATE_HZ)) )
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+#define WAKE_INTERVAL ( (uint32_t) ((SYSTICK_CLOCK_HZ / TICK_RATE_HZ)))
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/**
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* This is the timer interrupt service routine.
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@@ -34,16 +56,16 @@ void am_stimer_cmpr0_isr(void)
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/* Check the timer interrupt status */
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am_hal_stimer_int_clear(AM_HAL_STIMER_INT_COMPAREA);
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am_hal_stimer_compare_delta_set(0, WAKE_INTERVAL);
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-
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+
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if (rt_thread_self() != RT_NULL)
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{
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- /* enter interrupt */
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- rt_interrupt_enter();
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+ /* enter interrupt */
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+ rt_interrupt_enter();
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- rt_tick_increase();
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+ rt_tick_increase();
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- /* leave interrupt */
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- rt_interrupt_leave();
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+ /* leave interrupt */
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+ rt_interrupt_leave();
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}
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}
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@@ -53,13 +75,10 @@ void am_stimer_cmpr0_isr(void)
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*/
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void SysTick_Configuration(void)
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{
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- /* Set the main clk */
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- am_hal_clkgen_sysclk_select(AM_HAL_CLKGEN_SYSCLK_MAX);
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-
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/* Enable compare A interrupt in STIMER */
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am_hal_stimer_int_enable(AM_HAL_STIMER_INT_COMPAREA);
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- /* Enable the timer interrupt in the NVIC */
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+ /* Enable the timer interrupt in the NVIC, making sure to use the appropriate priority level */
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am_hal_interrupt_enable(AM_HAL_INTERRUPT_STIMER_CMPR0);
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/* Configure the STIMER and run */
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@@ -69,15 +88,6 @@ void SysTick_Configuration(void)
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AM_HAL_STIMER_CFG_COMPARE_A_ENABLE);
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}
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-/**
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- * This is the CacheCtrl Enable.
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- *
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- */
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-void CacheCtrl_Enable(void)
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-{
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- am_hal_cachectrl_enable(&am_hal_cachectrl_defaults);
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-}
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-
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/**
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* This is the low power operation.
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* This function enables several power-saving features of the MCU, and
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@@ -100,7 +110,7 @@ void am_low_power_init(void)
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/* Stop the XT and LFRC */
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am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_XT);
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- // am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_LFRC);
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+ am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_LFRC);
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/* Disable the RTC */
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am_hal_rtc_osc_disable();
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@@ -112,7 +122,11 @@ void am_low_power_init(void)
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*/
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void deep_power_save(void)
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{
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- am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_DEEP);
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+ am_hal_interrupt_master_disable();
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+
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+ am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_DEEP);
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+
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+ am_hal_interrupt_master_enable();
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}
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/**
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@@ -120,27 +134,48 @@ void deep_power_save(void)
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*/
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void rt_hw_board_init(void)
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{
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- /* Set the clock frequency */
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- SysTick_Configuration();
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-
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- /* Set the default cache configuration */
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- CacheCtrl_Enable();
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+ /* Set the system clock to maximum frequency */
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+ am_hal_clkgen_sysclk_select(AM_HAL_CLKGEN_SYSCLK_MAX);
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+
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+ /* Set the default cache configuration */
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+ am_hal_cachectrl_enable(&am_hal_cachectrl_defaults);
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/* Configure the board for low power operation */
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- //am_low_power_init();
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-
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-#ifdef RT_USING_IDLE_HOOK
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- rt_thread_idle_sethook(deep_power_save);
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+ am_low_power_init();
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+
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+ /* Config SysTick */
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+ SysTick_Configuration();
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+
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+#ifdef RT_USING_IDLE_HOOK
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+ /* Set sleep deep mode */
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+ rt_thread_idle_sethook(deep_power_save);
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+
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+#ifndef NO_FPU
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+ /* Enable the floating point module, and configure the core for lazy stacking */
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+ am_hal_sysctrl_fpu_enable();
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+ am_hal_sysctrl_fpu_stacking_enable(true);
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+#else
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+ am_hal_sysctrl_fpu_disable();
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+#endif
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+
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+ /* Turn off unused Flash & SRAM */
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+ am_hal_pwrctrl_memory_enable(AM_HAL_PWRCTRL_MEMEN_FLASH512K);
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+ am_hal_pwrctrl_memory_enable(AM_HAL_PWRCTRL_MEMEN_SRAM32K);
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+
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#endif
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-
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+
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#ifdef RT_USING_CONSOLE
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- rt_hw_uart_init();
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+ rt_hw_uart_init();
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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+
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+#ifdef RT_USING_HEAP
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+ rt_system_heap_init((void*)AM_SRAM_BEGIN, (void*)AM_SRAM_END);
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+#endif
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}
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/*@}*/
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lin
