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Added functions and example for deep sleep on mb851.

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The added function let a process to make the system go
into deep sleep for maximum power saving.
The udp-ipv6-example shows how to use these new functions.
This commit is contained in:
Salvatore Pitrulli 2011-04-08 11:38:16 +00:00
parent 5a4a39afb3
commit 6655c876f2
11 changed files with 483 additions and 16 deletions
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67
cpu/stm32w108/clock.c
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@ -45,8 +45,14 @@
#include "hal/hal.h"
#include "dev/stm32w_systick.h"
#include "sys/clock.h"
#include "sys/etimer.h"
#include "contiki.h"
#include "uart1.h"
#include "dev/leds.h"
#include "dev/stm32w-radio.h"
#define DEBUG DEBUG_NONE
#include "net/uip-debug.h"
// The value that will be load in the SysTick value register.
#define RELOAD_VALUE 24000-1 // 1 ms with a 24 MHz clock
@ -77,9 +83,9 @@ void SysTick_Handler(void)
void clock_init(void)
{
INTERRUPTS_OFF();
//Counts the number of ticks.
ATOMIC(
//Counts the number of ticks.
count = 0;
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
@ -87,7 +93,8 @@ void clock_init(void)
SysTick_ITConfig(ENABLE);
SysTick_CounterCmd(SysTick_Counter_Enable);
INTERRUPTS_ON();
)
}
/*---------------------------------------------------------------------------*/
@ -128,3 +135,51 @@ unsigned long clock_seconds(void)
{
return current_seconds;
}
#include <stdio.h>
void sleep_seconds(int seconds)
{
int32u quarter_seconds = seconds * 4;
uint8_t radio_on;
halPowerDown();
radio_on = stm32w_radio_is_on();
stm32w_radio_driver.off();
halSleepForQsWithOptions(&quarter_seconds, 0);
ATOMIC(
halPowerUp();
// Update OS system ticks.
current_seconds += seconds - quarter_seconds / 4 ; // Passed seconds
count += seconds * CLOCK_SECOND - quarter_seconds * CLOCK_SECOND / 4 ;
if(etimer_pending()) {
etimer_request_poll();
}
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
SysTick_SetReload(RELOAD_VALUE);
SysTick_ITConfig(ENABLE);
SysTick_CounterCmd(SysTick_Counter_Enable);
)
stm32w_radio_driver.init();
if(radio_on){
stm32w_radio_driver.on();
}
uart1_init(115200);
leds_init();
rtimer_init();
PRINTF("WakeInfo: %04x\r\n", halGetWakeInfo());
}