SD card example for Wio cellular targets - Seeed Wio 3G and Wio LTE-M1/NB1(BG96)

Revision:
1:bda3045adb2f
Parent:
0:5e920a8fb894
--- a/main.cpp	Tue Feb 12 08:04:50 2019 +0000
+++ b/main.cpp	Wed Feb 13 02:08:25 2019 +0000
@@ -9,6 +9,8 @@
 
 #if defined(TARGET_WIO_3G) || defined(TARGET_WIO_BG96) 
 DigitalOut SD_POWER(PA_15, 1);
+#else
+#error This example only supports the Seeed Wio 3G or Wio LTE M1/NB1(BG96)
 #endif
 
 SDBlockDevice sd(MBED_CONF_SD_SPI_MOSI,