1 files changed, 40 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/stdio/main.cpp b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/stdio/main.cpp
new file mode 100644
index 0000000000..bdfd53c976
--- /dev/null
+++ b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/stdio/main.cpp
@@ -0,0 +1,40 @@
+#include "mbed.h"
+#include "test_env.h"
+
+/* This test purpose is to verify the behaviour when the program does not link
+ * any symbol from the mbed library.
+ * In the past we had an issue where the stdio retargeting was not linked in.
+ */
+
+int main() {
+    MBED_HOSTTEST_TIMEOUT(20);
+    MBED_HOSTTEST_SELECT(stdio_auto);
+    MBED_HOSTTEST_DESCRIPTION(stdio);
+    MBED_HOSTTEST_START("MBED_2");
+
+    DigitalOut led1(LED1);
+    DigitalOut led2(LED2);
+
+    int value_int;
+    
+
+    notify_start(); // Just to sync with host test supervisor
+
+    const char* PRINT_PATTERN = "MBED: Your value was: %d\r\n";
+
+    while (true) {
+        // SCANF PRINTF family
+        value_int = 0;
+        led1 = 1;
+        scanf("%d", &value_int);
+        printf(PRINT_PATTERN, value_int);
+        led1 = 0;
+
+        // FSCANF, FPRINTF family
+        value_int = 0;
+        led2 = 1;
+        fscanf(stdin, "%d", &value_int);
+        fprintf(stdout, PRINT_PATTERN, value_int);
+        led2 = 0;
+    }
+}