diff --git a/Makefile b/Makefile
index ac9284bac..3e334245d 100644
--- a/Makefile
+++ b/Makefile
@@ -323,6 +323,8 @@ smoketest:
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=nucleo-f722ze       examples/blinky1
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=p1am-100            examples/blinky1
+	@$(MD5SUM) test.hex
 	# test pwm
 	$(TINYGO) build -size short -o test.hex -target=itsybitsy-m0        examples/pwm
 	@$(MD5SUM) test.hex
diff --git a/src/machine/board_p1am-100.go b/src/machine/board_p1am-100.go
index 9cb3864bc..1f492fe5f 100644
--- a/src/machine/board_p1am-100.go
+++ b/src/machine/board_p1am-100.go
@@ -87,18 +87,18 @@ const (
 
 // SPI pins
 const (
-	SPI0_SCK_PIN  Pin = D9  // SCK: SERCOM1/PAD[1]
-	SPI0_MOSI_PIN Pin = D8  // MOSI: SERCOM1/PAD[0]
-	SPI0_MISO_PIN Pin = D10 // MISO: SERCOM1/PAD[3]
+	SPI0_SCK_PIN Pin = D9  // SCK: SERCOM1/PAD[1]
+	SPI0_SDO_PIN Pin = D8  // SDO: SERCOM1/PAD[0]
+	SPI0_SDI_PIN Pin = D10 // SDI: SERCOM1/PAD[3]
 )
 
 // SD card pins
 const (
-	SDCARD_MISO_PIN Pin = PA15 // MISO: SERCOM2/PAD[3]
-	SDCARD_MOSI_PIN Pin = PA12 // MOSI: SERCOM2/PAD[0]
-	SDCARD_SCK_PIN  Pin = PA13 // SCK: SERCOM2/PAD[1]
-	SDCARD_SS_PIN   Pin = PA14 // SS: as GPIO
-	SDCARD_CD_PIN   Pin = PA27
+	SDCARD_SDI_PIN Pin = PA15 // SDI: SERCOM2/PAD[3]
+	SDCARD_SDO_PIN Pin = PA12 // SDO: SERCOM2/PAD[0]
+	SDCARD_SCK_PIN Pin = PA13 // SCK: SERCOM2/PAD[1]
+	SDCARD_SS_PIN  Pin = PA14 // SS: as GPIO
+	SDCARD_CD_PIN  Pin = PA27
 )
 
 // I2S pins