micropython: add micropython component

components/language/micropython/drivers/sdcard/sdtest.py

@@ -0,0 +1,61 @@
+# Test for sdcard block protocol
+# Peter hinch 30th Jan 2016
+import os, sdcard, machine
+
+
+def sdtest():
+    spi = machine.SPI(1)
+    spi.init()  # Ensure right baudrate
+    sd = sdcard.SDCard(spi, machine.Pin.board.X21)  # Compatible with PCB
+    vfs = os.VfsFat(sd)
+    os.mount(vfs, "/fc")
+    print("Filesystem check")
+    print(os.listdir("/fc"))
+
+    line = "abcdefghijklmnopqrstuvwxyz\n"
+    lines = line * 200  # 5400 chars
+    short = "1234567890\n"
+
+    fn = "/fc/rats.txt"
+    print()
+    print("Multiple block read/write")
+    with open(fn, "w") as f:
+        n = f.write(lines)
+        print(n, "bytes written")
+        n = f.write(short)
+        print(n, "bytes written")
+        n = f.write(lines)
+        print(n, "bytes written")
+
+    with open(fn, "r") as f:
+        result1 = f.read()
+        print(len(result1), "bytes read")
+
+    fn = "/fc/rats1.txt"
+    print()
+    print("Single block read/write")
+    with open(fn, "w") as f:
+        n = f.write(short)  # one block
+        print(n, "bytes written")
+
+    with open(fn, "r") as f:
+        result2 = f.read()
+        print(len(result2), "bytes read")
+
+    os.umount("/fc")
+
+    print()
+    print("Verifying data read back")
+    success = True
+    if result1 == "".join((lines, short, lines)):
+        print("Large file Pass")
+    else:
+        print("Large file Fail")
+        success = False
+    if result2 == short:
+        print("Small file Pass")
+    else:
+        print("Small file Fail")
+        success = False
+    print()
+    print("Tests", "passed" if success else "failed")