74hc595.c

CCS-Festina · Joined: 21 Feb 2012 Posts: 11

I'm looking for the driver of 74hc595.c

I request to explain the meaning :

1- for(i=1;i<=NUMBER_OF_74595*8;++i) {

2- if((*(eo+(NUMBER_OF_74595-1))&0x80)==0)

3- write_expanded_outputs (&data[huns],0);

asmboy · Joined: 20 Nov 2007 Posts: 2128 Location: albany ny

1- for(i=1;i<=NUMBER_OF_74595*8;++i) {

is a standard 'C for-next loop

2- if((*(eo+(NUMBER_OF_74595-1))&0x80)==0)

a standard C evaluation expression of the IF-THEN variety

3- write_expanded_outputs (&data[huns],0);

a support function using an address operator pointer for its argument

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Here are two threads that discuss how the 74595.c driver works:
http://www.ccsinfo.com/forum/viewtopic.php?t=45065
http://www.ccsinfo.com/forum/viewtopic.php?t=22789