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[/] [s6soc/] [trunk/] [sw/] [dev/] [display.c] - Diff between revs 21 and 45

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Rev 21 Rev 45
Line 11... Line 11...
// Creator:     Dan Gisselquist, Ph.D.
// Creator:     Dan Gisselquist, Ph.D.
//              Gisselquist Technology, LLC
//              Gisselquist Technology, LLC
//
//
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
//
//
// Copyright (C) 2015-2016, Gisselquist Technology, LLC
// Copyright (C) 2015-2017, Gisselquist Technology, LLC
//
//
// This program is free software (firmware): you can redistribute it and/or
// This program is free software (firmware): you can redistribute it and/or
// modify it under the terms of  the GNU General Public License as published
// modify it under the terms of  the GNU General Public License as published
// by the Free Software Foundation, either version 3 of the License, or (at
// by the Free Software Foundation, either version 3 of the License, or (at
// your option) any later version.
// your option) any later version.
Line 53... Line 53...
        do {
        do {
                asm("noop");
                asm("noop");
        } while(i-->0);
        } while(i-->0);
}
}
 
 
void    dispchar(int ch) {
void    dispchar(char ch) {
        if (!ch) // Don't display null characters
        if (!ch) // Don't display null characters
                return;
                return;
        if (ch&(~0x0ff)) { // Multiple characters to display
        int     ich = ch;
                int     v = (ch>>24)&0x0ff;
 
                if (v) {
 
                        dispchar(v);
 
                        v = (ch>>16)&0x0ff;
 
                        if (v) {
 
                                dispchar(v);
 
                                v = (ch>> 8)&0x0ff;
 
                                if (v) {
 
                                        dispchar(v);
 
                                        dispchar(ch&0x0ff);
 
                                }
 
                        }
 
                }
 
        } else {
 
                IOSPACE *sys = (IOSPACE *)IOADDR;
 
                // Send the character
                // Send the character
                for(int i=0; i<8; i++) {
                for(int i=0; i<8; i++) {
                        int gpiov = GPOCLRV(GPO_MOSI|GPO_SCK|GPO_SS);
                        int gpiov = GPOCLRV(GPO_MOSI|GPO_SCK|GPO_SS);
                        if (ch&0x80)
                if (ich&0x80)
                                gpiov |= GPOSETV(GPO_MOSI);
                                gpiov |= GPOSETV(GPO_MOSI);
                        sys->io_gpio = gpiov;
                _sys->io_gpio = gpiov;
                        dispwait();
                        dispwait();
                        sys->io_gpio = GPOSETV(GPO_SCK);
                _sys->io_gpio = GPOSETV(GPO_SCK);
                        dispwait();
                        dispwait();
                        ch<<=1;
                ich<<=1;
                }
                }
 
 
                // Turn off the clock
                // Turn off the clock
                sys->io_gpio = GPOCLRV(GPO_SCK);
        _sys->io_gpio = GPOCLRV(GPO_SCK);
                dispwait();
                dispwait();
                // Then the port
                // Then the port
                sys->io_gpio = GPOSETV(GPO_SS);
        _sys->io_gpio = GPOSETV(GPO_SS);
                dispwait();
                dispwait();
        }
        }
}
 
 
 
#ifdef  ZIPOS
#ifdef  ZIPOS
#include "../zipos/ktraps.h"
#include "../zipos/ktraps.h"
#include "../zipos/kfildes.h"
#include "../zipos/kfildes.h"
void    display_task(void) {
void    display_task(void) {
        while(1) {
        while(1) {
                int     ch;
                char    ch;
                read(FILENO_STDIN, &ch, 1);
                read(FILENO_STDIN, &ch, 1);
                dispchar(ch);
                dispchar(ch);
        }
        }
}
}
#endif
#endif

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