mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-12 19:03:42 +00:00
Yurii Soldak
31 lines
577 B
Go
31 lines
577 B
Go
package rpio // import "tinygo.org/x/drivers/rpio"
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import go_rpio "github.com/stianeikeland/go-rpio/v4"
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type SPI struct {
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}
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func NewSPI() (s *SPI) {
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if err := go_rpio.SpiBegin(go_rpio.Spi0); err != nil {
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panic(err)
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}
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go_rpio.SpiSpeed(25_000_000) // 25 MHz
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go_rpio.SpiChipSelect(0)
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return &SPI{}
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}
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func (s *SPI) Tx(w, r []byte) error {
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data := make([]byte, len(w))
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copy(data, w)
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go_rpio.SpiExchange(data)
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copy(r, data)
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return nil
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}
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func (s *SPI) Transfer(b byte) (byte, error) {
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w := []byte{b}
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r := make([]byte, len(w))
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err := s.Tx(w, r)
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return r[0], err
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}
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