Erik - / LPC812_Sleep_HelloWorld

Example of using sleep/deepsleep with the LPC812

Dependencies:   mbed-src WakeUp

After some initial code the device goes into powerdown (deepsleep), or sleep mode. By creating a rising edge on pin D0 (I just use a cable to connect it to Vdd) it will leave sleep, blink blue, and go to sleep again. Aditionally after 10 seconds of sleep it will blink green using the low-power wake-up timer.

Brownout detection and Watchdog timer are disabled since in deepsleep they are the primary power consumers.

main.cpp@1:85ca0ec1e66f, 2013-11-23 (annotated)

Committer:
Sissors
Date:
Sat Nov 23 11:36:34 2013 +0000
Revision:
1:85ca0ec1e66f
Parent:
0:273b2570ead8 
Added wakeup timer.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 0:273b2570ead8 1 #include "mbed.h"
Sissors 1:85ca0ec1e66f 2 #include "WakeUp.h"
Sissors 0:273b2570ead8 3
Sissors 1:85ca0ec1e66f 4 DigitalOut led1(LED1);
Sissors 1:85ca0ec1e66f 5 DigitalOut led2(LED2);
Sissors 0:273b2570ead8 6 InterruptIn inter(D0);
Sissors 0:273b2570ead8 7
Sissors 0:273b2570ead8 8
Sissors 1:85ca0ec1e66f 9 void interirq(void)
Sissors 1:85ca0ec1e66f 10 {
Sissors 1:85ca0ec1e66f 11 led1 = 0;
Sissors 1:85ca0ec1e66f 12 wait(0.2);
Sissors 1:85ca0ec1e66f 13 led1 = 1;
Sissors 1:85ca0ec1e66f 14 }
Sissors 0:273b2570ead8 15
Sissors 1:85ca0ec1e66f 16 void wakeirq(void)
Sissors 1:85ca0ec1e66f 17 {
Sissors 1:85ca0ec1e66f 18 led2 = 0;
Sissors 1:85ca0ec1e66f 19 wait(0.2);
Sissors 1:85ca0ec1e66f 20 led2 = 1;
Sissors 0:273b2570ead8 21 }
Sissors 0:273b2570ead8 22
Sissors 1:85ca0ec1e66f 23 int main()
Sissors 1:85ca0ec1e66f 24 {
Sissors 1:85ca0ec1e66f 25 led1 = 1;
Sissors 1:85ca0ec1e66f 26 led2 = 1;
Sissors 0:273b2570ead8 27 inter.rise(interirq);
Sissors 1:85ca0ec1e66f 28 WakeUp::calibrate();
Sissors 1:85ca0ec1e66f 29 WakeUp::attach(wakeirq);
Sissors 1:85ca0ec1e66f 30
Sissors 1:85ca0ec1e66f 31
Sissors 1:85ca0ec1e66f 32 //Disable BOD and WDT (only done to get nice low deepsleep power):
Sissors 0:273b2570ead8 33 LPC_SYSCON->PDRUNCFG |= (1<<3) | (1<<6);
Sissors 1:85ca0ec1e66f 34
Sissors 1:85ca0ec1e66f 35 WakeUp::set(10);
Sissors 0:273b2570ead8 36 while(1) {
Sissors 0:273b2570ead8 37 //sleep();
Sissors 0:273b2570ead8 38 deepsleep();
Sissors 1:85ca0ec1e66f 39 WakeUp::set(10);
Sissors 0:273b2570ead8 40 }
Sissors 0:273b2570ead8 41 }
Sissors 1:85ca0ec1e66f 42