Merge branch 'master' of https://github.com/oddwires/RPI---pico

Clock/README.md

@@ -1,27 +1,31 @@
 # Analog Clock on an RP2040. #
 
-* Features:
-  * Direct Digital Synthesis (DDS)
-  * Dual 8 bit R-2R Digital to Analog converter
-  * Target device = Pico (also works on Pimoroni PGA2040)
-  * Set time through Putty terminal session over USB port
-### Construction... ###
-![Hardware](https://github.com/oddwires/RP2040/blob/master/Clock/Images/Pico_DAC_bb.jpg)
-### Early Low res version on a digital scope... ###
-![Hardware](https://github.com/oddwires/RP2040/blob/master/Clock/Images/IMG_1215.JPG)
-### Looking so much better with the new clock face on a CRT scope... ###
-![Hardware](https://github.com/oddwires/RP2040/blob/master/Clock/Images/IMG_1222.JPG)
+There is also an asscociated <a href="https://www.instructables.com/Oscilloscope-Clock-on-a-Raspberry-Pi-Pico/" target="_blank" />Instructable</a> detailing the hardware.
 
-* Supported commands
-  * ?   - Help
-  * V   - Version info
-  * S   - Set time: Notation: HH:MM:SS or HH,MM,SS<br>
-HH can be either 12 or 24 hour notation.  e.g. '03:00:00' is the same as '15:00:00'<br>
-Delimiter can be either ':' or ','. e.g. '15:00:00' is the same as '15,00,00'<br>
-MM is in the range 0<=MM<=59<br>
-SS is in the range 0<=SS<=59<br>
-Leading zeros can be ommited. e.g. '1:2:3' is the same as '01:02:03'<br>
-Trailing parameters can be ommited, and will be set to zero. e.g. '12:15' is the same as '12:15:00' and '12' is the same as '12:00:00'
+https://github.com/oddwires/RP2040-code/assets/3483157/f9f16b66-ea9f-45c7-9ec1-8131fb11000c
 
-* Limitations:
+### Features:
+ * Two independent 8-bit Digital to Analog (DAC) channels using R-2R networks.
+ * Oscilloscope XY mode to plot an analogue clock.
+ * C++ program
+ * Single USB provides power, programming and control.
+ * Solder-less construction.
+  
+### Supported commands
+ * ? - Help
+ * T - Set time
+   * Notation: HH:MM:SS or HH,MM,SS
+   * HH can be either 12 or 24 hour notation. e.g. '03:00:00' is the same as '15:00:00'
+   * Delimiter can be either ':' or ','. e.g. '15:00:00' is the same as '15,00,00'
+   * MM is in the range 0<=MM<=59
+   * SS is in the range 0<=SS<=59
+   * Leading zeros can be omitted. e.g. '1:2:3' is the same as '01:02:03'
+   * Trailing parameters can be omitted. e.g. '12:15' is the same as '12:15:00'
+ * L - Set level
+   * Notation: 2 digit percentage 0<=NN<=100
+ * V - Version info
+ * X - Invert X axis
+ * Y - Invert Y axis
+
+### Limitations:
   * USB serial requires Windows (10 or later)