ecff6f8e0c
* machine/PyPortal: implementation, also includes refinements for other members of samd51x familty.
53 строки
1,2 КиБ
Go
53 строки
1,2 КиБ
Go
// +build sam,atsamd51,atsamd51g19
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// Peripheral abstraction layer for the atsamd51.
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//
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// Datasheet:
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// http://ww1.microchip.com/downloads/en/DeviceDoc/60001507C.pdf
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//
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package machine
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import "device/sam"
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const HSRAM_SIZE = 0x00030000
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// InitPWM initializes the PWM interface.
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func InitPWM() {
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// turn on timer clocks used for PWM
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sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_TCC0_ | sam.MCLK_APBBMASK_TCC1_)
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sam.MCLK.APBCMASK.SetBits(sam.MCLK_APBCMASK_TCC2_)
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//use clock generator 0
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sam.GCLK.PCHCTRL[25].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
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sam.GCLK_PCHCTRL_CHEN)
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sam.GCLK.PCHCTRL[29].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
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sam.GCLK_PCHCTRL_CHEN)
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}
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// getTimer returns the timer to be used for PWM on this pin
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func (pwm PWM) getTimer() *sam.TCC_Type {
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switch pwm.Pin {
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case PA16:
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return sam.TCC1
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case PA17:
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return sam.TCC1
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case PA14:
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return sam.TCC2
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case PA15:
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return sam.TCC2
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case PA18:
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return sam.TCC1
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case PA19:
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return sam.TCC1
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case PA20:
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return sam.TCC0
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case PA21:
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return sam.TCC0
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case PA23:
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return sam.TCC0
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case PA22:
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return sam.TCC0
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default:
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return nil // not supported on this pin
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}
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}
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