diff --git a/boards/adafruit-grand-central-m4-express/Makefile.features b/boards/adafruit-grand-central-m4-express/Makefile.features
index e4cbb709d7f2..8bb4a070c58a 100644
--- a/boards/adafruit-grand-central-m4-express/Makefile.features
+++ b/boards/adafruit-grand-central-m4-express/Makefile.features
@@ -17,4 +17,8 @@ FEATURES_PROVIDED += periph_usbdev
 # other board features
 FEATURES_PROVIDED += arduino_analog
 FEATURES_PROVIDED += arduino_pins
+FEATURES_PROVIDED += arduino_shield_isp
+FEATURES_PROVIDED += arduino_shield_mega
+FEATURES_PROVIDED += arduino_shield_uno
+FEATURES_PROVIDED += arduino_spi
 FEATURES_PROVIDED += sdcard_spi
diff --git a/boards/adafruit-grand-central-m4-express/include/arduino_iomap.h b/boards/adafruit-grand-central-m4-express/include/arduino_iomap.h
index 7740dcf795ac..135d8e9d28a5 100644
--- a/boards/adafruit-grand-central-m4-express/include/arduino_iomap.h
+++ b/boards/adafruit-grand-central-m4-express/include/arduino_iomap.h
@@ -85,6 +85,16 @@ extern "C" {
 #define ARDUINO_ANALOG_PIN_LAST 5
 /** @} */
 
+/**
+ * @name    Arduino's default SPI device
+ * @{
+ */
+/**
+ * @brief   SPI_DEV(0) is connected to the ISP header *AND* the SD card reader
+ */
+#define ARDUINO_SPI_ISP         SPI_DEV(0)
+/** @} */
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/boards/adafruit-grand-central-m4-express/include/periph_conf.h b/boards/adafruit-grand-central-m4-express/include/periph_conf.h
index cd12c6e44e2b..cba05f74528f 100644
--- a/boards/adafruit-grand-central-m4-express/include/periph_conf.h
+++ b/boards/adafruit-grand-central-m4-express/include/periph_conf.h
@@ -204,7 +204,7 @@ static const tc32_conf_t timer_config[] = {
  * @{
  */
 static const spi_conf_t spi_config[] = {
-    {   /* SPI on XIO connector */
+    {   /* SPI on XIO connector *AND* SPI on ISP */
         .dev      = &(SERCOM7->SPI),
         .miso_pin = GPIO_PIN(PD, 11),   /* D50 MISO */
         .mosi_pin = GPIO_PIN(PD, 8),    /* D51 MOSI */