mirror of
https://github.com/tinygo-org/tinygo.git
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Ayke van Laethem
17b5b6ec5b
Don't store addresses in the values of registers, this leads to problems with char arrays (among others). Instead, do it like it's done in C with raw addresses cast to struct pointers. This commit also splits gen-device.py, as AVR and ARM have very different ideas of what a register is. It's easier to just keep them separate.
50 lines
770 B
Go
50 lines
770 B
Go
// +build avr
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package machine
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import (
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"device/avr"
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)
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type GPIOMode uint8
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const (
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GPIO_INPUT = iota
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GPIO_OUTPUT
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)
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// LED on the Arduino
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const LED = 13
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func (p GPIO) Configure(config GPIOConfig) {
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if config.Mode == GPIO_OUTPUT { // set output bit
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if p.Pin < 8 {
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*avr.DDRD |= 1 << p.Pin
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} else {
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*avr.DDRB |= 1 << (p.Pin - 8)
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}
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} else { // configure input: clear output bit
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if p.Pin < 8 {
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*avr.DDRD &^= 1 << p.Pin
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} else {
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*avr.DDRB &^= 1 << (p.Pin - 8)
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}
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}
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}
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func (p GPIO) Set(value bool) {
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if value { // set bits
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if p.Pin < 8 {
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*avr.PORTD |= 1 << p.Pin
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} else {
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*avr.PORTB |= 1 << (p.Pin - 8)
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}
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} else { // clear bits
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if p.Pin < 8 {
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*avr.PORTB &^= 1 << p.Pin
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} else {
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*avr.PORTB &^= 1 << (p.Pin - 8)
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}
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}
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}
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