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3 Commits

Author SHA1 Message Date
robert-hh d79105d7c0 mimxrt/machine_timer: Leave the Timer clock source at IPG clock. 
Setting it to OSC_CLK interferes the utime module's functionality.  This is
still an area demanding an understanding.
 2021-06-03 13:03:02 +10:00
robert-hh cdd95ce737 mimxrt/machine_timer: Reuse any existing timer objects. 
So there is a 1-1 mapping of hardware timer to Python object.
 2021-06-03 13:02:51 +10:00
robert-hh 4c407c790f mimxrt: Add the Timer class to the machine module. 
It supports three hardware timer channels based on the PIT timers of the
MIMXRT MCU.  The timer id's are 0, 1 and 2.  On soft reboot all active
timers will be stopped via finalisers.
 2021-06-02 00:33:13 +10:00