serial wip

1 files changed, 41 insertions, 0 deletions

diff --git a/gm_platform/fw/test.py b/gm_platform/fw/test.py
new file mode 100644
index 0000000..cb243a5
--- /dev/null
+++ b/gm_platform/fw/test.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import serial
+import time
+
+#ser = serial.Serial('/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0', 230400)
+ser = serial.Serial('/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0', 250000)
+#while True:
+#    ser.write(bytes(range(256)))
+start = time.time()
+
+last_val = None
+run = 0
+total_errors = 0
+rx_bytes = 0
+last_print = time.time()
+while True:
+    bytes = ser.read(256)
+    for byte in bytes:
+        if last_val is not None and byte != (last_val + 1) % 256:
+            if run > 0:
+                print(f'{time.time()-start:>8.3f} {run} {last_val:02x} {byte:02x}')
+                run = 0
+                total_errors += 1
+        else:
+            run += 1
+        rx_bytes += 1
+
+        if time.time() - last_print > 5:
+            last_print = time.time()
+            print(f'{time.time()-start:>8.3f} {run} [all good] err={total_errors}@rx={rx_bytes}B',
+            f'(rate 1/{rx_bytes/total_errors:.5g})' if total_errors > 0 else 'rate unknown')
+        last_val = byte
+
+#while True:
+#    data = ser.read_until(b'\0')
+#    print(f'{time.time()-start:>8.3f} {len(data)}')
+
+# while True:
+#     data = ser.read(256)
+#     print('YES' if b'\0' in data else 'NO ', data)