mirror of https://github.com/kidoman/embd
51 lines
809 B
Go
51 lines
809 B
Go
// +build ignore
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package main
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import (
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"flag"
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"fmt"
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"time"
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"github.com/kidoman/embd"
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_ "github.com/kidoman/embd/host/all"
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)
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const (
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channel = 0
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speed = 1000000
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bpw = 8
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delay = 0
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)
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func main() {
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flag.Parse()
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if err := embd.InitSPI(); err != nil {
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panic(err)
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}
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defer embd.CloseSPI()
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bus := embd.NewSPIBus(embd.SPIMode0, channel, speed, bpw, delay)
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defer bus.Close()
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for i := 0; i < 30; i++ {
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time.Sleep(1 * time.Second)
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val, err := getSensorValue(bus)
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if err != nil {
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panic(err)
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}
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fmt.Printf("value is: %v\n", val)
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}
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}
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func getSensorValue(bus embd.SPIBus) (uint16, error) {
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data := [3]uint8{1, 128, 0}
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var err error
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err = bus.TransferAndReceiveData(data[:])
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if err != nil {
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return uint16(0), err
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}
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return uint16(data[1]&0x03)<<8 | uint16(data[2]), nil
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}
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