/
read.go
59 lines (49 loc) · 1.07 KB
/
read.go
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package cmd
import (
"fmt"
"io"
"log"
"os"
"strconv"
"github.com/dcarley/as1130"
"github.com/spf13/cobra"
)
var readCmd = &cobra.Command{
Use: "read register subregister",
Short: "Read data from a register",
Long: `Read data from a register
This can be useful for debugging a running device.
`,
Args: cobra.ExactArgs(2),
Run: func(cmd *cobra.Command, args []string) {
register, err := strconv.ParseInt(args[0], 0, 16)
if err != nil {
log.Fatal(err)
}
subregister, err := strconv.ParseInt(args[1], 0, 16)
if err != nil {
log.Fatal(err)
}
if err := read(byte(register), byte(subregister), os.Stdout); err != nil {
log.Fatal(err)
}
},
}
func init() {
RootCmd.AddCommand(readCmd)
}
func read(register, subregister byte, out io.Writer) error {
as, err := as1130.NewAS1130(Device, Address)
if err != nil {
return err
}
defer as.Close()
data, err := as.Read(register, subregister)
if err != nil {
return err
}
fmt.Fprintf(out, "bin: %08b\n", data)
fmt.Fprintf(out, "hex: 0x%02x\n", data)
fmt.Fprintf(out, "dec: %d\n", data)
return nil
}