TI中文支持网请问一下，如何可以让系统进入PM3工作模式？在PM3工作模式下，只有复位和外部中断可以唤醒，那么如何在外部中断中加入函数，才可以唤醒呢？两个问题，有没有大神解释一下。先谢谢了！
Susan Yang：
只要没有其他定时事件，协议栈可以进入PM3。可以参考STACK中Advremote例子，这就是个遥控器，没有连接时进入PM3靠按键激活
可以参考帖子 http://www.deyisupport.com/question_answer/wireless_connectivity/bluetooth/f/103/t/25190.aspx
shen renren：
协议栈中已经写好了休眠函数，在没有定时时间时自动进入（因为PM3时定时器不工作，所以定时事件下是无法进入PM3的）。 PM3就是靠外部中断唤醒的，可以是按键、或者光敏三极管的外部中断，都可以退出，SImplePeripheral工程中对按键的中断程序已经写好，您可以参考
da qin zheng sheng：
可以参考下边的例程！可以移植到cc2540！
/*********************************************************************************** Filename: powermode3.c
Description: This software example shows how to properly enter Power Mode 3 and then exit upon Port 0 Interrupt. The SRF05EB LED1 is cleared before entering Power Mode 3, and then set by the Port 0 ISR. Hence, the LED1 is ON in Active Mode and OFF in Power Mode 3.
Note: PM2 and PM3 is not supported on the CC2544.
***********************************************************************************/
/************************************************************************************ INCLUDES*/#include <power_mode.h>#include <hal_types.h>// Include Name definitions of individual bits and bit-fields in the CC254x device registers.#include <ioCC254x_bitdef.h>// Include device specific file#if (chip==2541)#include "ioCC2541.h"#elif (chip==2543)#include "ioCC2543.h"#elif (chip==2545)#include "ioCC2545.h"#else#error "Chip not supported!"#endif
/************************************************************************************ CONSTANTS*/// Wait time in Active mode.#define ACT_MODE_TIME 50000
/************************************************************************************ LOCAL VARIABLES*/// Variable for active mode duration.static uint32 __xdata activeModeCnt = 0;
/************************************************************************************ LOCAL FUNCTIONS*/
/************************************************************************************ @fn setup_port_interrupt** @brief Function which sets up the Port 0 Interrupt for Power Mode 3 usage.** @param void** @return void*/void setup_port_interrupt(void){ // Clear Port 0 Interrupt flags. P0IF = 0; P0IFG = 0x00;
// Interrupt enable on all pins on port 0. P0IEN = 0xFF;
// Enable CPU Interrupt for Port 0 (IEN1.P0IE = 1). P0IE = 1;
// Enable Global Interrupt by setting the (IEN0.EA = 1). EA = 1;}
/************************************************************************************ @fn port0_isr** @brief Port 0 Interrupt Service Routine, which executes when SRF05EB S1* (P0_1) is pressed.** @param void** @return void*/#pragma vector = P0INT_VECTOR__interrupt void port0_isr(void){ // Note that the order in which the following flags are cleared is important.
// Clear Port 0 Interrupt Flags. P0IFG = 0x00;
// Clear CPU Interrupt Flag for P0 (IRCON.P0IF = 0). P0IF = 0;
// Set LED1 to indicate Active Mode. P1_0 = 1;}
/************************************************************************************ @fn main** @brief Enter Power Mode, exit Power Mode 3 using Port 0 Interrupt.** @param none** @return 0*/
void main(void){ /*************************************************************************** * Setup I/O */ // Initialize P1_0 for SRF05EB LED1. P1SEL &= ~BIT0; // Function as General Purpose I/O. P1_0 = 1; // LED1 on. P1DIR |= BIT0; // Output.
// Initialize P0_1 for SRF05EB S1 button. P0SEL &= ~BIT1; // Function as General Purpose I/O. P0DIR &= ~BIT1; // Input. P0INP |= BIT1; // 3-state input.
/*************************************************************************** * Setup interrupt * * Setup and enable Port 0 Interrupt, which shall wake-up the SoC from * Power Mode 3. */ setup_port_interrupt(); /*********************************************************************** * Setup powermode */ // Set [SLEEPCMD.MODE] to PM3. SLEEPCMD = (SLEEPCMD & ~SLEEPCMD_MODE) | SLEEPCMD_MODE_PM3;
/* Main Loop, enter/exit Power Mode 3. */ while(1) { // Wait some time in Active Mode, and clear LED1 before // entering Power Mode 3. for(activeModeCnt = 0; activeModeCnt < ACT_MODE_TIME; activeModeCnt++); P1_0 = 0; // Enter powermode // Sets PCON.IDLE with a 2-byte boundary assembly instruction. // NOTE: Cache must be enabled (see CM in FCTL). // This method gives the least current consumption. EnterSleepModeProcessInterruptsOnWakeup(); }}
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