0.6.3 Changes since last version

[digitaldcpower] / README.htm

diff --git a/README.htm b/README.htm
index 9019f19..00e9973 100644 (file)
--- a/README.htm
+++ b/README.htm
@@ -10,15 +10,25 @@ Compile the software and program the microcontroller:
 make 
 make load
 
-3) set the fuse bytes to 8MHz internal:
+3) set the fuse bytes to 8MHz internal with BOD:
 make fuse
 
 This should result in the following settings:
 
 avrdude: Device signature = 0x1e9307
-avrdude: safemode: lfuse reads as E4
+avrdude: safemode: lfuse reads as A4
 avrdude: safemode: hfuse reads as D9
 
+Fuse Low Byte details
+
+BODLEVEL  Brown out detector trigger level = 1
+BODEN     Brown out detector, 0=enable     = 0
+SUT1      Select start-up time             = 1
+SUT0      Select start-up time             = 0
+CKSEL3    Select Clock source              = 0
+CKSEL2    Select Clock source              = 1
+CKSEL1    Select Clock source              = 0
+CKSEL0    Select Clock source              = 0
 
 The make fuse needs to be done only once
 unless you change the Atmega8 chip. make/make load
@@ -95,24 +105,56 @@ Terminal settings for remote control via your computer
 ======================================================
 You can e.g use putty under windows
 http://www.chiark.greenend.org.uk/~sgtatham/putty/ 
-it supports as well serial connections
+it supports as well serial connections. The other common
+option under windows is HyperTerminal but it is more complicated
+to use than putty.
 For Linux I can recommend picocom
 http://code.google.com/p/picocom/
 (use command picocom -l -b 9600 /dev/ttyUSB0)
+Another good serial terminal for linux is gtkterm
+http://www.jls-info.com/julien/linux/
+
+Serial port settings for the terminal:
 
 port       : Virtual com port (e.g /dev/ttyUSB1 or /dev/ttyUSB0
-             or COM5 under windows or ... to whatever port the
-            virtual com port maps)
-flowcontrol: none
+             or COM5 under windows or ... whatever port the
+            virtual com-port maps to)
+            Under linux or Mac you can use the command dmesg
+            after you have plugged in the USB cable to see to 
+            which com-port/device the new virtual com port maps to.
+            
 baudrate   : 9600
 parity     : none
+flowcontrol: none
+stopbits   : 1
 databits   : 8
 
 </pre>
 <br>
 <img src=screenshot-cmd-interface.gif>
 <br>
+<br>
+At shop.tuxgraphics.org you can get an optically insulated
+USB to serial interface add-on kit such that your computer
+is galvanically separated from the power supply but still able
+to give commands. This enables you as well to use two power supplies
+to provide positive and negative supply voltages for e.g. an operational amplifier.
+
+<br>
+<br>
 <pre>
+You can control the digital power supply by commands. A number 
+of commands are provided for this purpose. They are at the moment
+available for Linux and Mac:
+
+
+ddcp-script-ttyinit   - initialize the COM port
+ddcp-script-getval    - get current values (same as you see on the LCD)
+ddcp-script-setval    - send a command to the power supply
+
+ddcp-script-example.sh  - an example shell script showing how to use 
+                          the above commands
+
 -------------------------------------------------------------------
 Copyright: GPL V2
 Author: Guido Socher
@@ -128,6 +170,11 @@ digitaldcpower-0.6.1 -- 2010-06-06 Number conversion to display string
                      -- Basic uart interface prompt, no remote control yet
 
 digitaldcpower-0.6.2 -- 2010-06-26 Full UART command interface
+digitaldcpower-0.6.3 -- 2010-07-03 Accelerate UART command polling to
+                        not loose characters when copied/pasted at high speed.
+                       Line editing with backspace if terminal supports it.
+                       Set BOD (brown out detector enable) fuse.
+                       Script interface (ddcp-script)
                         
 -------------------------------------------------------------------
 </pre>