1 files changed, 19 insertions, 0 deletions
diff --git a/esp8266/scripts/port_diag.py b/esp8266/scripts/port_diag.py
new file mode 100644
index 0000000000..fd7ee52d14
--- /dev/null
+++ b/esp8266/scripts/port_diag.py
@@ -0,0 +1,19 @@
+import esp
+import uctypes
+
+
+def main():
+
+    ROM = uctypes.bytearray_at(0x40200000, 16)
+    fid = esp.flash_id()
+
+    print("Flash ID: %x (Vendor: %x Device: %x)" % (fid, fid & 0xff, fid & 0xff00 | fid >> 16))
+
+    print("Flash bootloader data:")
+    SZ_MAP = {0: "512KB", 1: "256KB", 2: "1MB", 3: "2MB", 4: "4MB"}
+    FREQ_MAP = {0: "40MHZ", 1: "26MHZ", 2: "20MHz", 0xf: "80MHz"}
+    print("Byte @2: %02x" % ROM[2])
+    print("Byte @3: %02x (Flash size: %s Flash freq: %s)" % (ROM[3], SZ_MAP.get(ROM[3] >> 4, "?"), FREQ_MAP.get(ROM[3] & 0xf)))
+
+
+main()