CVS: examples/i2c_spy README.txt,1.3,1.4
Chris Liechti <[email protected]> Thu, 15 May 2008 08:56:09 -0700
| Newsgroups | gmane.comp.hardware.texas-instruments.msp430.gcc.cvs |
|---|---|
| Message-ID | <[email protected]> |
Update of /cvsroot/mspgcc/examples/i2c_spy In directory sc8-pr-cvs16.sourceforge.net:/tmp/cvs-serv32337/examples/i2c_spy Modified Files: README.txt Log Message: doc updates Index: README.txt =================================================================== RCS file: /cvsroot/mspgcc/examples/i2c_spy/README.txt,v retrieving revision 1.3 retrieving revision 1.4 diff -u -w -d -r1.3 -r1.4 --- README.txt 13 Mar 2006 18:22:46 -0000 1.3 +++ README.txt 15 May 2008 15:56:05 -0000 1.4 @@ -6,7 +6,7 @@ This is a simple I2C spy soft- and hardware. The software decodes I2C data and sends a hexdump over the serial port. -The slave sends the data with 115200Baud over the serial port and the +The slave sends the data with 115200 baud over the serial port and the the dump is in hex format, which means it is possible that the I2C bus would deliver more data than that could be logged. The spy thus uses the clock stretching feature of the I2C bus (holding SCL low). @@ -90,6 +90,12 @@ The LED lights up during clock init and whenever an address is read on the I2C bus. All other pins are set to output/GND. Do not connect them. +Instead of generating a negative voltage internally, the transmit line from +the PC is directly fed back. This works as this device is transmit only and +never receives data from the PC. The PC must not send data to guarantee +propper reception from the spy. + + Material ~~~~~~~~ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/