How to get out of ">" mode after sending a system command?

There are a list of command line commands for communication with a Cypress chip that happen to work fine if run one at a time from command line in matlab:

system('C:\Program Files (x86)\Cypress\Programmer\ppcli.exe');
OpenPort MiniProg3/300000000000 "C:/Program Files (x86)/Cypress/Programmer"
SetPowerVoltage 5.0
SetProtocol 4
I2C_GetDeviceList

They do not work if place in a matlab script (*.m)

Any tips/tricks I am missing here?

Thanks

[Star Strider]

What is the result if you run them from a script? Errors? Warnings? Something else?

Saying ‘they do not work’ doesn’t provide much information.

Answer 1

[Walter Roberson]

tfile = tempname;
fid = fopen(tfile, 'wt');
fprintf(fid, '%s\n', 'OpenPort MiniProg3/300000000000 "C:/Program Files (x86)/Cypress/Programmer"');
fprintf(fid, '%s\n', 'SetPowerVoltage 5.0');
fprintf(fid, '%s\n', 'SetProtocol 4');
fprintf(fid, '%s\n', 'I2C_GetDeviceList');
fclose(fid);

system([ 'C:\Program Files (x86)\Cypress\Programmer\ppcli.exe <', tfile]);

delete(tfile);

[SunnyvaleGeek]

Thanks for your answer. One more question, is there a way to insert a delay between these commands. 'Pause(value)' would not work in a .run file.

[Walter Roberson]

No. The input goes into a file and the application asks for more input when it is ready to proceed. If it is asking for input before it is ready and does not provide a way to wait for readiness, that is a Bad Design.

You might be interested in looking at popen() . The implementation there is for Unix type systems, but you could adapt it with the information from http://stackoverflow.com/questions/450865/what-is-the-equivalent-to-posix-popen-in-the-win32-api