UART example update and README

First attempt

Author: 7west

uart/README.adoc

@@ -0,0 +1,25 @@
+= Using UART on the Raspberry Pi Pico
+:xrefstyle: short
+
+Send data from the UART1 port to the UART0 port. 
+
+== Other code to try
+[source.python]
+uart0 = UART(0) #opens a UART connection at the default baudrate of 115,200
+uart0.readline() #reads until the CR (\r) and NL (\n) characters then returns the line
+
+
+== Wiring information
+
+See <<uart-wiring-diagram>> for wiring instructions.
+
+[[uart-wiring-diagram]]
+[pdfwidth=75%]
+.Wiring two of the Pico's ports together
+image::pico_uart_example.png[]
+
+== List of Files
+
+A list of files with descriptions of their function;
+
+uart.py:: The example code.

uart/pico_uart_example.png

@@ -1,13 +1,15 @@
 from machine import UART, Pin
+import time
 
-uart1 = UART(1, baudrate=9600, tx=Pin(8), rx=Pin(9), bits=8, parity=None, stop=1)
-uart1.write(b'UART on GPIO8&9 at 9600 baud\n\r')
+uart1 = UART(1, baudrate=9600, tx=Pin(8), rx=Pin(9))
 
-uart0 = UART(0)
-uart0.write(b'UART on GPIO0&1 at 115200 baud\n\r')
+uart0 = UART(0, baudrate=9600, tx=Pin(0), rx=Pin(1))
 
+txData = b'hello world\n\r'
+uart1.write(txData)
+time.sleep(1)
 rxData = bytes()
 while uart0.any() > 0:
-    rxData += uart0.read(1)
-
-print(rxData)
+    rxData += uart0.read()
+    
+print(rxData.decode('utf-8'))