求教如何实现nrf51822睡眠模式的软件应用？

bc_xunlian

例程里边有两个库函数（sd_app_evt_wait();SVCALL(SD_POWER_SYSTEM_OFF, uint32_t, sd_power_system_off());）说是可以使芯片进入睡眠模式，外设如GPIO信号可以唤醒。函数我调用成功但是实际测试函数1会跑死程序，函数2直接跳过，并没有睡眠，小弟实在没办法，特来求教？哪位哥们实现过滴，请交流一下。不甚感激。。。

正点原子

帮顶。。。。

bc_xunlian

回复【2楼】正点原子:
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<br>回复【2楼】正点原子:
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<br>芯片原文，说是系统刚在关机模式下是最省电的睡眠，可以被GPIO的detect信号唤醒，原文如下:
<br>System&nbsp;OFF&nbsp;is&nbsp;the&nbsp;deepest&nbsp;power&nbsp;saving&nbsp;mode&nbsp;the&nbsp;system&nbsp;can&nbsp;enter.&nbsp;In&nbsp;this&nbsp;mode,&nbsp;the&nbsp;system’s&nbsp;core
<br>functionality&nbsp;is&nbsp;powered&nbsp;down&nbsp;and&nbsp;all&nbsp;ongoing&nbsp;tasks&nbsp;are&nbsp;terminated.&nbsp;The&nbsp;only&nbsp;mechanism&nbsp;that&nbsp;is&nbsp;functional
<br>and&nbsp;responsive&nbsp;in&nbsp;this&nbsp;mode&nbsp;is&nbsp;the&nbsp;reset&nbsp;mechanism.
<br>One&nbsp;or&nbsp;more&nbsp;blocks&nbsp;of&nbsp;the&nbsp;RAM&nbsp;can&nbsp;be&nbsp;retained&nbsp;in&nbsp;System&nbsp;OFF&nbsp;mode&nbsp;depending&nbsp;on&nbsp;the&nbsp;settings&nbsp;in&nbsp;the
<br>RAMON&nbsp;register.
<br>The&nbsp;system&nbsp;can&nbsp;be&nbsp;woken&nbsp;up&nbsp;from&nbsp;system&nbsp;OFF&nbsp;mode&nbsp;either&nbsp;from&nbsp;the&nbsp;DETECT&nbsp;signal&nbsp;generated&nbsp;by&nbsp;the&nbsp;GPIO
<br>peripheral,&nbsp;or&nbsp;from&nbsp;a&nbsp;reset.&nbsp;When&nbsp;the&nbsp;system&nbsp;wakes&nbsp;up&nbsp;from&nbsp;OFF&nbsp;mode,&nbsp;a&nbsp;system&nbsp;reset&nbsp;is&nbsp;performed.
<br>库函数SVCALL(SD_POWER_SYSTEM_OFF,&nbsp;uint32_t,&nbsp;sd_power_system_off());的函数说明是@brief&nbsputs&nbsp;the&nbsp;chip&nbsp;in&nbsp;System&nbsp;OFF&nbsp;mode.&nbsp;我用这个函数点灯基本确定CPU是睡下去了，但是GPIO中断没有唤醒起来。芯片GPIO有这样的话，如下：
<br>11.1.2&nbsp;System&nbsp;OFF&nbsp;mode
<br>System&nbsp;OFF&nbsp;is&nbsp;the&nbsp;deepest&nbsp;power&nbsp;saving&nbsp;mode&nbsp;the&nbsp;system&nbsp;can&nbsp;enter.&nbsp;In&nbsp;this&nbsp;mode,&nbsp;the&nbsp;system’s&nbsp;core
<br>functionality&nbsp;is&nbsp;powered&nbsp;down&nbsp;and&nbsp;all&nbsp;ongoing&nbsp;tasks&nbsp;are&nbsp;terminated.&nbsp;The&nbsp;only&nbsp;mechanism&nbsp;that&nbsp;is&nbsp;functional
<br>and&nbsp;responsive&nbsp;in&nbsp;this&nbsp;mode&nbsp;is&nbsp;the&nbsp;reset&nbsp;mechanism.
<br>One&nbsp;or&nbsp;more&nbsp;blocks&nbsp;of&nbsp;the&nbsp;RAM&nbsp;can&nbsp;be&nbsp;retained&nbsp;in&nbsp;System&nbsp;OFF&nbsp;mode&nbsp;depending&nbsp;on&nbsp;the&nbsp;settings&nbsp;in&nbsp;the
<br>RAMON&nbsp;register.
<br>The&nbsp;system&nbsp;can&nbsp;be&nbsp;woken&nbsp;up&nbsp;from&nbsp;system&nbsp;OFF&nbsp;mode&nbsp;either&nbsp;from&nbsp;the&nbsp;DETECT&nbsp;signal&nbsp;generated&nbsp;by&nbsp;the&nbsp;GPIO
<br>peripheral,&nbsp;or&nbsp;from&nbsp;a&nbsp;reset.&nbsp;When&nbsp;the&nbsp;system&nbsp;wakes&nbsp;up&nbsp;from&nbsp;OFF&nbsp;mode,&nbsp;a&nbsp;system&nbsp;reset&nbsp;is&nbsp;performed.
<br>我个人觉得，detect信号就是一个高低电平，GPIO原文也说这个DETECT信号可以将CPU从睡眠模式唤醒，但是实际却还是没有唤醒。希望有搞这一块的帮一起看看。谢谢哈

bc_xunlian

晕，关于上面GPIO DETECT的说明贴错了，更正如下：<br />
Pins can be individually configured, through the pin sense mechanism, to detect either a high level or a low<br />
level on their input. When the correct level is detected, the sense mechanism raises the DETECT signal line,<br />
which can then be read by other peripherals in the system, see Figure 15. This mechanism is functional in<br />
both ON and OFF mode.<br />
The input buffer of a GPIO pin can be disconnected from the pin to enable power savings when the pin is<br />
not used as an input, see Figure 15. Inputs must be connected in order to get a valid input value in the IN<br />
register and for the sense mechanism to get access to the pin.<br />
Other peripherals in the system can attach themselves to GPIO pins and override their output value and<br />
configuration, or read their analog or digital input value, see Figure 15.<br />
Selected PINs also support analog input signals, see ANAIN in Figure 15 on page 55. Pins that support analog<br />
input signals vary between devices, see the product specification for your device for more details.<br />
Pin direction can be configured both in the DIR register as well as through the individual PIN_CNF[n]<br />
registers. A change in one register will automatically be reflected in the other register.<br />

xuyuhaoa

回复【3楼】bc_xunlian:
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<br>sd_app_evt_wait();怎么会跑死呢，最后死在哪呢？_power_system_off();这个怎么跳过呢？执行这个相当于关机了。

bc_xunlian

回复【5楼】xuyuhaoa:
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<br>这个我当时理解错误了。

dashuai357

请问这个例程哪里有

dashuai357

你好，请问你的低功耗可以了吗