4 Commits (4c94d78f1b07b96c0015968583196be65eb73159)

Author	SHA1	Message	Date
Russ Butler	adc64cccac	Update low power ticker wrapper ... Update the low power ticker wrapper code so it does not violate any properties of the ticker specification. In specific this patch fixes the following: - Prevent spurious interrupts - Fire interrupt only when the ticker times increments to or past the value set by ticker_set_interrupt - Disable interrupts when ticker_init is called	2018-08-17 09:29:41 -05:00
Martin Kojtal	483427a285	hal: astyle update	2018-06-29 10:36:36 +01:00
jeromecoutant	12b3df7773	#6536 rebase correction	2018-05-25 12:26:05 -05:00
Russ Butler	17892cbbb9	Add handling for synchronized low power tickers ... Some low power tickers take multiple cycles of the low power clock to set a compare value. Because of this if the compare value is set twice back-to-back these implementations will block until that time has passed. This can cause system stability issues since interrupts are disabling for this time. To gracefully support this kind of hardware this patch adds code to prevent back-to-back writes to the hardware. It does this by recording the low power clock cycle of the initial write. If any writes come in too soon after this initial write the microsecond ticker is used to schedule the new write in the future when the hardware is ready to accept a new value. To enable this feature on a target the macro LOWPOWERTIMER_DELAY_TICKS must be set to the number of low power clock cycles that must elapse between writes to the low power timer.	2018-04-16 17:36:07 -05:00