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#include <common.h>
/**
** User function main #1: exit, write
**
** Prints its ID, then loops N times delaying and printing, then exits.
** Verifies the return byte count from each call to write().
**
** Invoked as: main1 x n
** where x is the ID character
** n is the iteration count
*/
USERMAIN( main ) {
int count = 30; // default iteration count
char ch = '1'; // default character to print
char buf[128]; // local char buffer
// process the command-line arguments
switch( argc ) {
case 3: count = str2int( argv[2], 10 );
// FALL THROUGH
case 2: ch = argv[1][0];
break;
default:
sprint( buf, "%s: argc %d, args: ", argv[0], argc );
cwrites( buf );
for( int i = 0; i <= argc; ++i ) {
sprint( buf, " %s", argv[argc] ? argv[argc] : "(null)" );
cwrites( buf );
}
cwrites( "\n" );
}
// announce our presence
int n = swritech( ch );
if( n != 1 ) {
sprint( buf, "== %c, write #1 returned %d\n", ch, n );
cwrites( buf );
}
// iterate and print the required number of other characters
for( int i = 0; i < count; ++i ) {
DELAY(STD);
n = swritech( ch );
if( n != 1 ) {
sprint( buf, "== %c, write #2 returned %d\n", ch, n );
cwrites( buf );
}
}
// all done!
exit( 0 );
// should never reach this code; if we do, something is
// wrong with exit(), so we'll report it
char msg[] = "*1*";
msg[1] = ch;
n = write( CHAN_SIO, msg, 3 ); /* shouldn't happen! */
if( n != 3 ) {
sprint( buf, "User %c, write #3 returned %d\n", ch, n );
cwrites( buf );
}
// this should really get us out of here
return( 42 );
}
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