set SPI speed and mode in spi smoketest (google#102)

crvv · Dec 10, 2016 · 0872fc6 · 0872fc6
1 parent a69c1eb
commit 0872fc6
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/conn/spi/spismoketest/spismoketest.go b/conn/spi/spismoketest/spismoketest.go
@@ -44,10 +44,18 @@ func (s *SmokeTest) Run(args []string) error {
 	// Open the bus.
 	spiDev, err := spi.New(*busNum, *csNum)
 	if err != nil {
-		return fmt.Errorf("spi-smoke: %s", err)
+		return fmt.Errorf("spi-smoke: %v", err)
 	}
 	defer spiDev.Close()
 
+	// Set SPI parameters.
+	if err := spiDev.Speed(4 * 1000 * 1000 * 1000); err != nil {
+		return fmt.Errorf("spi-smoke: cannot set speed, %v", err)
+	}
+	if err := spiDev.Configure(spi.Mode0, 8); err != nil {
+		return fmt.Errorf("spi-smoke: cannot set mode, %v", err)
+	}
+
 	// Open the WC pin.
 	var wpPin gpio.PinIO
 	if *wp != "" {