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cores/pwm: Add reset signal to be able to synchronize PWM with an external signal.

This commit is contained in:
Florent Kermarrec 2023-01-12 11:43:55 +01:00
parent 461b48fbaa
commit f386f4a2a5
1 changed files with 2 additions and 1 deletions
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3
litex/soc/cores/pwm.py
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@ -25,6 +25,7 @@ class PWM(Module, AutoCSR):
default_period = 0): default_period = 0):
if pwm is None: if pwm is None:
self.pwm = pwm = Signal() self.pwm = pwm = Signal()
self.reset = Signal()
self.enable = Signal(reset=default_enable) self.enable = Signal(reset=default_enable)
self.width = Signal(32, reset=default_width) self.width = Signal(32, reset=default_width)
self.period = Signal(32, reset=default_period) self.period = Signal(32, reset=default_period)
@ -35,7 +36,7 @@ class PWM(Module, AutoCSR):
sync = getattr(self.sync, clock_domain) sync = getattr(self.sync, clock_domain)
sync += [ sync += [
If(self.enable, If(self.enable & ~self.reset,
counter.eq(counter + 1), counter.eq(counter + 1),
If(counter < self.width, If(counter < self.width,
pwm.eq(1) pwm.eq(1)