uart working

1 files changed, 10 insertions, 9 deletions

diff --git a/nicla/serial_test.py b/nicla/serial_test.py
index bef43a2..c8b84e5 100644
--- a/nicla/serial_test.py
+++ b/nicla/serial_test.py
@@ -1,21 +1,22 @@
-from pyb import Pin, delay
+from pyb import Pin, delay, udelay
 
 zumo_tx = Pin("PA10", Pin.IN)
 zumo_rx = Pin("PA9", Pin.OUT_PP)
 
-def uart_send(s):
+def uart_send(byte):
     zumo_rx.value(0)
-    byte = ord(s)
-    print("START BIT")
-    delay(2)
+    udelay(1000)
     for x in range(8):
         bit = (byte & (1 << 7)) >> 7
         byte <<= 1
         zumo_rx.value(bit)
-        print(f"BIT[{x}] = {bit}")
-        delay(2)
-    print("STOP BIT")
+        udelay(1000)
     zumo_rx.value(1)
 
 while True:
-    uart_send("a")
+    # uart_send("a")
+    for x in range(8):
+        n = 1 << x
+        uart_send(n)
+        print(f"0x{n:02x}")
+        delay(1000)