1 files changed, 38 insertions, 0 deletions
diff --git a/ports/esp32/modules/inisetup.py b/ports/esp32/modules/inisetup.py
new file mode 100644
index 000000000..45bce82cc
--- /dev/null
+++ b/ports/esp32/modules/inisetup.py
@@ -0,0 +1,38 @@
+import uos
+from flashbdev import bdev
+
+def check_bootsec():
+    buf = bytearray(bdev.SEC_SIZE)
+    bdev.readblocks(0, buf)
+    empty = True
+    for b in buf:
+        if b != 0xff:
+            empty = False
+            break
+    if empty:
+        return True
+    fs_corrupted()
+
+def fs_corrupted():
+    import time
+    while 1:
+        print("""\
+FAT filesystem appears to be corrupted. If you had important data there, you
+may want to make a flash snapshot to try to recover it. Otherwise, perform
+factory reprogramming of MicroPython firmware (completely erase flash, followed
+by firmware programming).
+""")
+        time.sleep(3)
+
+def setup():
+    check_bootsec()
+    print("Performing initial setup")
+    uos.VfsFat.mkfs(bdev)
+    vfs = uos.VfsFat(bdev)
+    uos.mount(vfs, '/flash')
+    uos.chdir('/flash')
+    with open("boot.py", "w") as f:
+        f.write("""\
+# This file is executed on every boot (including wake-boot from deepsleep)
+""")
+    return vfs