da505a6b17
All the AVRs that I've looked at had the same pin/port structure, with the possible states being input/floating, input/pullup, low, and high (with the same PORT/DDR registers). The main difference is the number of available ports and pins. To reduce the amount of code and avoid duplication (and thus errors) I decided to centralize this, following the design used by the atmega2560 but while using a trick to save tracking a few registers. In the process, I noticed that the Pin.Get() function was incorrect on the atmega2560 implementation. It is now fixed in the unified code.
23 строки
356 Б
Go
23 строки
356 Б
Go
// +build attiny85
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package machine
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import (
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"device/avr"
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"runtime/volatile"
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)
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const (
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PB0 Pin = iota
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PB1
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PB2
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PB3
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PB4
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PB5
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)
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// getPortMask returns the PORTx register and mask for the pin.
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func (p Pin) getPortMask() (*volatile.Register8, uint8) {
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// Very simple for the attiny85, which only has a single port.
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return avr.PORTB, 1 << uint8(p)
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}
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