Update readme.md

update to 0.11.14

software/examples/tiny RF tool/readme.md

@@ -1,13 +1,22 @@
 The very tiny RF tool uses nothing more than an Arduino Nano and an si5351 breakout board.
 The tool is controlled by your PC radio applicion. 
-Basically, the VFO-A appears on the clk0 output and the VFO-B frequency appears on the clk1 output.
+
+This application might help you align you radio circuits, test you filters or measure SWR of your antenna.
+Addional circuitry may be required.
+
+The application generates two or three RF clock signals on the si5351.
+- clk0 is either the dial frequency of the radion in DC mode or the first mixer frequency.
+- clk1 is either turned off in DC mode or the IF frequency plus the IF shift.
+- clk2 is the dial frequency plus the clk2 shift. 
+Changing the clk2 shift allows you to discover the bandwith of your filters.
+- ptt pin will toggle based on the PTT mode of the application.
+
 Tested on fldigi, flrig, WSJT-X and Ham Radio Deluxe.
 Also supported by the text protocal from an ascii terminal emulator (such as "Serial Tool" in the Arduino IDE.)
 
-If attached, the RF tool will also display the two frequencies on the OLED display.
-(OLED display software is being tidied up, RSN.)
+If attached, the RF tool will also display the clock frequencies on the display.
 
-In this very tiny project, a header is installed on the TOP of the Nano for a small (.096" or 1.1") OLED display.
+In the simplest (hardware) version project, a header is installed on the TOP of the Nano for a small (.096" or 1.1") OLED display.
 I use extended headers; the only consideration is that the SCL and SDA pins extend down for the si5351 breakout board.
 The header is not a necessity and wires can also be used extend above and below.
 The OLED is powered by jumpering +5V and GND to the appropriate A6 and A7 pins.
@@ -24,18 +33,23 @@ The si5351 breakout board is soldered on an we're finished!
 ![built](0903200921a.jpg)
 
 The software is controlled by and tested with fldigi, flrig, WSJT-X and Ham Radio Deluxe
-by either selecting a Xiegu 5150 (for fldigi, get the latest version) or a Icom IC-754 or an IC-7000.
+by either selecting a Xiegu 5105 (for flrig, get the latest version) or a Icom IC-754 or an IC-7000.
 Default baud is 38400.
 
-You will likely have to configure the rf clocks via the text interface. qiv.
+You will likely have to configure the IF filters, if any, via the text interface. qiv.
 If the IFs are defined a 0 for high and low,
-the RF tool will work place the frequencies of VFO-A on the ckl0 output and VCO-B on the clk1 output.
-Direct conversion mode.
+the RF tool will place the frequencies of VFO-A on the ckl0 output and VCO-A + IF Shift on the clk2 output;
+that's Direct conversion mode.
 Otherwise the software will read the IF frequency and, depending on the mode, 
-place the calculated clocks on CLK0 and CLK1. 
-Superheterodyne mode.
+place the calculated clocks on CLK0 and CLK1 and and VCO-A + IF Shift on the clk2 output;
+that's Superheterodyne mode.
 
 ![testing](0903201140.jpg)
 
-Look for support of the graphics display in the next veriosn.
+There are both compile time and run time configurations.
+- #define TINYRFTOOL is used to change the radiopins.h file to power the display and clock
+board to be powered from the Arduino Nano board. 
+Do not define, or undef this, if you provide power to those boards through more tradional means.
+- #define RFTOOLDISPLAY if you have a small OLED attached. 
+It will show the frequencies of the si5351 clocks on the display.