| 通过RTC中断1S唤醒 void main(void) { WM_Initialize(); // System initialize // Display "123456" LCD_Display0_8(); while(1) { __bis_SR_register(LPM3_bits + GIE); // 进入 LPM3 w/ interrupt } } void WM_Initialize(void) { WDTCTL = WDTPW + WDTHOLD; // Stop watchdog // WDTCTL = WDTPW + WDTCNTCL + WDTSSEL0 + WDTIS0 + WDTIS1; // Set watchdog 16s PM5CTL0 &= ~LOCKLPM5; // Disable the GPIO power-on default high-impedance mode // to activate previously configured port settings GPIO_Config(); // GPIO initialize CLOCK_Config(); // System clock initialize LCD_Config(); // LCD module initialize RTC_Config(); //P1SEL0 |= BIT5; //配置P15为输入脚 20160506 // P1REN |= BIT5; //P1REN &= ~BIT5; // to be comment 20160506 //TA0CTL = 0; 20160506 } void CLOCK_Config() { P4SEL0 |= BIT1 + BIT2; // Select pin4.1 pin4.2 as crystal function do { CSCTL7 &= ~(XT1OFFG + DCOFFG); // Clear XT1 and DCO fault flag 清除 XT1 DCO 失效标志 SFRIFG1 &= ~OFIFG; }while (SFRIFG1 & OFIFG); // Test oscillator fault flag 如果失效标志存在 CSCTL4 = SELA__XT1CLK; // IMPORTANT. Select ACLK = XT1 = 32768Hz } void LCD_Config() { uint8_t ui8Cnt; uint8_t *pLCD = (uint8_t *)&LCDM0; for (ui8Cnt = 13; ui8Cnt > 0; ui8Cnt--) // Clear LCD memory *pLCD++ = 0x00; // CLR LCD SYSCFG2 |= LCDPCTL; // R13/R23/R33/LCDC1/LCDC2 pins selected 设置 LCD功耗 LCDPCTL0 = 0xFFFF; LCDPCTL1 = 0x01FF; //设置 LCD管脚 L0~L24 pins selected LCDVCTL = LCDSELVDD + LCDCPEN; // Mode 2 设置 降低LCD 功耗 片上电荷泵 LCDCSSEL0 = 0x000F; // 设置 公共极 COM0~3 LCDCSSEL1 = 0x0000; LCDM0 = 0x21; // L0 = COM0, L1 = COM1 LCDM1 = 0x84; LCDCTL0 |= LCD4MUX + LCDLP + LCDON; // 打开LCD: 4-mux 模式 } void RTC_Config() { RTCCTL = RTCSS__XT1CLK + RTCSR + RTCPS__1 | RTCIE; RTCMOD = 32768-1; //1s tRTCData.ui8Year = 14; // RTC initialize tRTCData.ui8Month = 7; tRTCData.ui8Day = 30; tRTCData.ui8Hour = 23; tRTCData.ui8Minute = 59; tRTCData.ui8Second = 55; } // RTC interrupt service routine #pragma vector=RTC_VECTOR __interrupt void RTC_ISR(void) { switch(__even_in_range(RTCIV,RTCIV_RTCIF)) { case RTCIV_NONE: break; // No interrupt case RTCIV_RTCIF: // RTC Overflow { uint8_t ui8Days = 31; uint8_t *pAddress; // For monthly data storage tRTCData.ui8Second++; 。。。 __low_power_mode_off_on_exit(); //退出中断时唤醒CPU } break; default: break; } } |
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为什么进入LPM3，电流还有20MA
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