1
0
mirror of https://github.com/kidoman/embd synced 2024-12-22 21:00:05 +01:00
embd/samples/spimcp3008.go

48 lines
766 B
Go

// +build ignore
package main
import (
"flag"
"fmt"
"time"
"github.com/kidoman/embd"
_ "github.com/kidoman/embd/host/all"
)
func main() {
flag.Parse()
if err := embd.InitSPI(); err != nil {
panic(err)
}
bus := embd.NewSPIBus(embd.SpiMode0, 0, 1000000, 8, 0)
defer clean(bus)
for i := 0; i < 30; i++ {
time.Sleep(1 * time.Second)
val, _ := getSensorValue(bus)
fmt.Printf("value is: %v\n", val)
}
}
func clean(bus embd.SPIBus) {
bus.Close()
embd.CloseSPI()
}
func getSensorValue(bus embd.SPIBus) (uint16, error) {
data := make([]uint8, 3)
data[0] = 1
data[1] = 128
data[2] = 0
var err error
err = bus.TransferAndRecieveData(data)
if err != nil {
return uint16(0), err
}
return uint16(data[1]&0x03)<<8 | uint16(data[2]), nil
}