void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* If the g_dma_inprogress is zero, then there is no DMA in progress. This
* value is needed in the IDLE loop to determine if the IDLE loop should
* go into lower power power consumption modes. According to the LPC17xx
* User Manual: "The DMA controller can continue to work in Sleep mode, and
* has access to the peripheral SRAMs and all peripheral registers. The
* flash memory and the Main SRAM are not available in Sleep mode, they are
* disabled in order to save power."
*/
#ifdef CONFIG_LPC17_GPDMA
if (g_dma_inprogress == 0)
#endif
{
/* Sleep until an interrupt occurs in order to save power */
BEGIN_IDLE();
asm("WFI");
END_IDLE();
}
#endif
}
void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* Perform IDLE mode power management */
BEGIN_IDLE();
stm32_idlepm();
END_IDLE();
#endif
}
void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* Sleep until an interrupt occurs to save power */
BEGIN_IDLE();
asm("WFI");
END_IDLE();
#endif
}
void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* Perform IDLE mode power management */
up_idlepm();
/* Sleep until an interrupt occurs to save power.
*
* NOTE: There is an STM32F107 errata that is fixed by the following
* workaround:
*
* "2.17.11 Ethernet DMA not working after WFI/WFE instruction
* Description
* If a WFI/WFE instruction is executed to put the system in sleep mode
* while the Ethernet MAC master clock on the AHB bus matrix is ON and all
* remaining masters clocks are OFF, the Ethernet DMA will be not able to
* perform any AHB master accesses during sleep mode."
*
* Workaround
* Enable DMA1 or DMA2 clocks in the RCC_AHBENR register before
* executing the WFI/WFE instruction."
*
* Here the workaround is just to avoid SLEEP mode for the connectivity
* line parts if Ethernet is enabled. The errate recommends a more
* general solution: Enabling DMA1/2 clocking in stm32f10xx_rcc.c if the
* STM32107 Ethernet peripheral is enabled.
*/
#if !defined(CONFIG_STM32_CONNECTIVITYLINE) || !defined(CONFIG_STM32_ETHMAC)
#if !(defined(CONFIG_DEBUG_SYMBOLS) && defined(CONFIG_STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG))
BEGIN_IDLE();
asm("WFI");
END_IDLE();
#endif
#endif
#endif
}
void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* Perform IDLE mode power management */
up_idlepm();
/* Sleep until an interrupt occurs to save power. */
#if !(defined(CONFIG_DEBUG_SYMBOLS) && defined(CONFIG_STM32L4_DISABLE_IDLE_SLEEP_DURING_DEBUG))
BEGIN_IDLE();
asm("WFI");
END_IDLE();
#endif
#endif
}
