Modified fomat and add low power
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@ -1,5 +1,45 @@
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Apollo2 MCU是基于Ambiq Micro的Apollo MCU产品系列的第二代控制器。
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Ambiq使用专利亚阈值功率优化技术（Subthreshold Power Optimized Technology， SPOT）平台来实现惊人的功耗降低，其功耗通常比性能相近的其它MCU产品降低5至10倍。
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Apollo2 MCU采用32位ARM Cortex-M4F微控制器，集成了高达1 MB的闪存和256 KB的RAM，以适应无线电和传感器开销，同时仍留有足够的应用代码空间。
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Apollo2 MCU采用32位ARM Cortex-M4F微控制器，集成了高达1 MB的闪存和256 KB的RAM，以适应无线电和传感器开销，同时仍留有足够的应用代码空间。该微控制器还包括串行主机和UART端口，用于与无线电和传感器通信，包括加速度计，陀螺仪和磁力计。
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board info:Apollo2 Evaluation Board（http://ambiqmicro.com/apollo-ultra-low-power-mcu/apollo2-mcu-20170703/）
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Features
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Ultra-low supply current
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10 μA/MHz executing from flash at 3.3 V
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10 μA/MHz executing from RAM at 3.3 V
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High-performance ARM Cortex-M4 Processor
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Up to 48 MHz clock frequency
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Floating point unit
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Memory protection unit
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Wake-up interrupt controller with 32 interrupts
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Ultra-low power memory:
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Up to 1 MB of flash memory for code/data
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Up to 256 KB of low leakage RAM for code/data
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16kB 1 or 2-way Associative Cache
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Ultra-low power interface for off-chip sensors:
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14 bit, 15-channel, up to 1.2 MS/s ADC
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Voltage Comparator
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Temperature sensor with +/-2C accuracy
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Flexible serial peripherals:
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6x I2C/SPI master for communication with sensors,?radios, and other peripherals
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1x I2C/SPI slave for host communications
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2x UART for communication with peripherals and?legacy devices
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PDM for mono and stereo audio microphone
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Rich set of clock sources:
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32.768 kHz XTAL oscillator
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Low frequency RC oscillator – 1.024 kHz
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High frequency RC oscillator – 48 MHz
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RTC based on Ambiq’s AM08X5/18X5 families
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Wide operating range: 1.8-3.6 V, –40 to 85°C
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Compact package options:
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2.5 x 2.5 mm 49-pin CSP with 34 GPIO
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4.5 x 4.5 mm 64-pin BGA with 50 GPIO
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Board info
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Apollo2 Evaluation Board（http://ambiqmicro.com/apollo-ultra-low-power-mcu/apollo2-mcu-20170703/）
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Binary file not shown.
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After Width: | Height: | Size: 291 KiB |
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@ -1,5 +1,5 @@
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/*
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* File : application.c
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* File : main.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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*
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@ -23,7 +23,7 @@
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*/
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#include <rtthread.h>
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#include <stdint.h>
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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#include <shell.h>
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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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#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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@ -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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/* 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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* 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_interrupt_master_disable();
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am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_DEEP);
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am_hal_interrupt_master_enable();
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}
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/**
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@ -120,17 +134,34 @@ 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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/* 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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/* Set the default cache configuration */
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CacheCtrl_Enable();
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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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am_low_power_init();
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/* Config SysTick */
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SysTick_Configuration();
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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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#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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/* 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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#endif
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#ifdef RT_USING_CONSOLE
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@ -141,6 +172,10 @@ void rt_hw_board_init(void)
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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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#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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@ -1,3 +1,26 @@
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/*
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* File : board.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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*
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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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* 2017-09-14 Haley first implementation
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*/
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#ifndef __BOARD_H_
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#define __BOARD_H_
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@ -10,7 +33,13 @@
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/* USART driver select. */
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#define RT_USING_UART0
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#define RT_USING_UART1
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//#define RT_USING_UART1
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/* LED driver select. */
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#define RT_USING_LED0
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//#define RT_USING_LED1
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//#define RT_USING_LED2
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//#define RT_USING_LED3
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void rt_hw_board_init(void);
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*/
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void rt_hw_led_on(rt_uint8_t LEDNum)
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{
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#ifdef RT_USING_PIN
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if(LEDNum == 0)
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rt_pin_write(AM_GPIO_LED0, PIN_LOW);
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@ -54,6 +55,7 @@ void rt_hw_led_on(rt_uint8_t LEDNum)
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else if(LEDNum == 3)
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rt_pin_write(AM_GPIO_LED3, PIN_LOW);
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#endif
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}
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/**
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@ -67,6 +69,7 @@ void rt_hw_led_on(rt_uint8_t LEDNum)
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*/
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void rt_hw_led_off(rt_uint8_t LEDNum)
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{
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#ifdef RT_USING_PIN
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if(LEDNum == 0)
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rt_pin_write(AM_GPIO_LED0, PIN_HIGH);
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@ -78,6 +81,7 @@ void rt_hw_led_off(rt_uint8_t LEDNum)
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else if(LEDNum == 3)
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rt_pin_write(AM_GPIO_LED3, PIN_HIGH);
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#endif
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}
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/**
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@ -91,6 +95,7 @@ void rt_hw_led_off(rt_uint8_t LEDNum)
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*/
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int rt_hw_led_init(void)
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{
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#ifdef RT_USING_PIN
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#if defined(RT_USING_LED0)
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/* config led */
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rt_pin_mode(AM_GPIO_LED0, PIN_MODE_OUTPUT);
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@ -122,10 +127,10 @@ int rt_hw_led_init(void)
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/* turns off the led */
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rt_hw_led_off(3);
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#endif /* RT_USING_LED1 */
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#endif
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return 0;
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}
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#ifdef RT_USING_PIN
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#ifdef RT_USING_COMPONENTS_INIT
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INIT_BOARD_EXPORT(rt_hw_led_init);
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#endif
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/* SECTION: RT_DEBUG */
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/* Thread Debug */
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#define RT_DEBUG
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//#define RT_DEBUG
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//#define RT_DEBUG_INIT 1
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#define RT_USING_OVERFLOW_CHECK
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//#define RT_USING_OVERFLOW_CHECK
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/* Using Hook */
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//#define RT_USING_HOOK
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//#define RT_USING_IDLE_HOOK
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#define RT_USING_IDLE_HOOK
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#define IDLE_THREAD_STACK_SIZE 384
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#define RT_USING_SMALL_MEM
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#define RT_USING_TINY_SIZE
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/* Using USER MAIN */
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#define RT_USING_USER_MAIN
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// <bool name="RT_USING_COMPONENTS_INIT" description="Using RT-Thread components initialization" default="true" />
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#define RT_USING_COMPONENTS_INIT
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// <string name="RT_CONSOLE_DEVICE_NAME" description="The device name for console" default="uart1" />
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#define RT_CONSOLE_DEVICE_NAME "uart0"
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/* Using GPIO pin framework */
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#define RT_USING_PIN
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// #define RT_USING_SPI
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/* SECTION: finsh, a C-Express shell */
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#define RT_USING_FINSH
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/* configure finsh parameters */
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#define FINSH_THREAD_PRIORITY 6
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#define FINSH_THREAD_STACK_SIZE 512
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#define FINSH_THREAD_STACK_SIZE 1024
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#define FINSH_HISTORY_LINES 1
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/* Using symbol table */
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#define FINSH_USING_SYMTAB
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