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49 lines
1012 B
49 lines
1012 B
15 years ago
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/*
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Random number generator sample for BoostC compiler.
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Use the 'Led Block' plugin to see
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changing random value on port B.
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*/
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#include <system.h>
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#include <rand.h>
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#pragma CLOCK_FREQ 20000000
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// Set configuration word
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#ifdef _PIC16
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#pragma DATA 0x2007, _HS_OSC & _WDT_OFF
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#endif //_PIC16
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void main()
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{
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trisb = 0; //configure port B
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portb = 0;
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#ifdef _PIC16
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option_reg = 7; //set prescaler
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set_bit( intcon, GIE );
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set_bit( intcon, T0IE ); //enable TMR0 overflow bit
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#else
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clear_bit( t0con, T0CS ); // select internal clock
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clear_bit( t0con, PSA ); // select pres-scaler
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set_bit( t0con, T0PS0 ); // set pres-scaler to 1:256
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set_bit( t0con, T0PS1 );
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set_bit( t0con, T0PS2 );
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// enable interrupts
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set_bit( intcon, GIE );
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set_bit( intcon, TMR0IE ); //enable TMR0 overflow bit
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#endif
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//Set ramdom number generator seed
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srand( 0x1234 );
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while( 1 ) //endless loop
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{
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portb = rand();
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delay_ms( 100 );
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}
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}
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