Daiki Kato / Mbed OS SoftwareStanby_test_use_OS

This is a sample to make Software Standby using OS.

main.cpp@0:27ae610e630e, 2016-11-18 (annotated)

Committer:
dkato
Date:
Fri Nov 18 09:44:29 2016 +0000
Revision:
0:27ae610e630e
Child:
1:29fa0989ec31
first commit

Who changed what in which revision?

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dkato 0:27ae610e630e 1 #include "mbed.h"
dkato 0:27ae610e630e 2 #include "rtos.h"
dkato 0:27ae610e630e 3 #include "RZ_A1_Init.h"
dkato 0:27ae610e630e 4
dkato 0:27ae610e630e 5 InterruptIn button(USER_BUTTON0);
dkato 0:27ae610e630e 6 DigitalOut led1(LED1);
dkato 0:27ae610e630e 7 Thread * pTestTask = NULL;
dkato 0:27ae610e630e 8
dkato 0:27ae610e630e 9 static void idle_hook(void) {
dkato 0:27ae610e630e 10 __SEV();
dkato 0:27ae610e630e 11 __WFE();
dkato 0:27ae610e630e 12 __WFE();
dkato 0:27ae610e630e 13 }
dkato 0:27ae610e630e 14
dkato 0:27ae610e630e 15 void SoftwareStandby(void) {
dkato 0:27ae610e630e 16 volatile uint32_t dummy_32;
dkato 0:27ae610e630e 17 volatile uint8_t dummy_8;
dkato 0:27ae610e630e 18
dkato 0:27ae610e630e 19 GIC_DisableIRQ(OSTMI0TINT_IRQn);
dkato 0:27ae610e630e 20
dkato 0:27ae610e630e 21 // Set the standby_mode_en bit of the power control register in the PL310 to 1.
dkato 0:27ae610e630e 22 L2C.REG15_POWER_CTRL = 0x00000001uL;
dkato 0:27ae610e630e 23 dummy_32 = L2C.REG15_POWER_CTRL;
dkato 0:27ae610e630e 24
dkato 0:27ae610e630e 25 // Clear the TME bit in the watchdog timer control/status register (WTCSR) of the watchdog timer to 0 to stop the watchdog timer.
dkato 0:27ae610e630e 26 WDT.WTCSR = 0xA518;
dkato 0:27ae610e630e 27 WDT.WTCNT = 0x5A00;
dkato 0:27ae610e630e 28 WDT.WTCSR = 0xA51D; // CKS[2:0] = b'101 : 1/1024ｘP0 (7.8ms)
dkato 0:27ae610e630e 29
dkato 0:27ae610e630e 30 CPG.STBCR1 = 0x80;
dkato 0:27ae610e630e 31 dummy_8 = CPG.STBCR1;
dkato 0:27ae610e630e 32
dkato 0:27ae610e630e 33 __SEV();
dkato 0:27ae610e630e 34 __WFE();
dkato 0:27ae610e630e 35 __WFE();
dkato 0:27ae610e630e 36
dkato 0:27ae610e630e 37 GIC_EnableIRQ(OSTMI0TINT_IRQn);
dkato 0:27ae610e630e 38 }
dkato 0:27ae610e630e 39
dkato 0:27ae610e630e 40 static void interrupt_button(void) {
dkato 0:27ae610e630e 41 #if(0) // It may or may not be present.
dkato 0:27ae610e630e 42 if (pTestTask != NULL) {
dkato 0:27ae610e630e 43 pTestTask->signal_set(1);
dkato 0:27ae610e630e 44 }
dkato 0:27ae610e630e 45 #endif
dkato 0:27ae610e630e 46 }
dkato 0:27ae610e630e 47
dkato 0:27ae610e630e 48 void test_task(void) {
dkato 0:27ae610e630e 49 int test_cnt = 0;
dkato 0:27ae610e630e 50
dkato 0:27ae610e630e 51 button.fall(&interrupt_button);
dkato 0:27ae610e630e 52 button.rise(&interrupt_button);
dkato 0:27ae610e630e 53
dkato 0:27ae610e630e 54 while (true) {
dkato 0:27ae610e630e 55 SoftwareStandby();
dkato 0:27ae610e630e 56 #if(0) // It may or may not be present.
dkato 0:27ae610e630e 57 // It becomes sleep during idle task.
dkato 0:27ae610e630e 58 Thread::signal_wait(1);
dkato 0:27ae610e630e 59 #endif
dkato 0:27ae610e630e 60 led1 = !led1;
dkato 0:27ae610e630e 61 printf("%d\n", test_cnt++);
dkato 0:27ae610e630e 62 wait_ms(2); // Wait for output completion of printf().
dkato 0:27ae610e630e 63 }
dkato 0:27ae610e630e 64 }
dkato 0:27ae610e630e 65
dkato 0:27ae610e630e 66 int main() {
dkato 0:27ae610e630e 67 Thread::attach_idle_hook(idle_hook);
dkato 0:27ae610e630e 68 pTestTask = new Thread();
dkato 0:27ae610e630e 69 pTestTask->start(test_task);
dkato 0:27ae610e630e 70 }