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        <sect1 id="mdelayms" xreflabel="mdelayms">
                <title>M&oacute;dulo Delayms</title>
                <para>Autor : Pedro Jos&eacute; Ram&iacute;rez Guti&eacute;rrez </para>
                <para>pjanragu en telefonica.net</para>
                <para>Rutina que genera un retardo en <keycap>ms</keycap></para>

                <para> 
                Antes necesita definir el valor de la frecuencia del cristal
                <screen>
        #define FOSC_HZ 20000000

        #include &lt;delayms.h>
                </screen>
                </para>

                <sect2 id="delayms" xreflabel="delayms">
                <title>delayms</title>
                <para>
                La funci&oacute;n genera un retardo en milisegundos.
                </para>
                <screen>
        void delayms(unsigned int retraso);
                </screen>
                </sect2>

                <sect2 id="ejemplodelayms" xreflabel="Ejemplo DelayMs">
                <title>Ejemplo de DelayMs</title>
                <para>
                para compilar necesitas los siguientes comandos.
                </para>
                <para>
                <screen>
Ejemplo de compilaci&oacute;n : ./compila.sh ej_delay 16f877a
                </screen>
                </para>
                <para>
                ej_delay.c
                </para>
                <screen>
#include &lt;pic/p16f877a.h>

#define FOSC_HZ 20000000

#include &lt;uart.h>
#include &lt;pinio.h>   /*define los PIN_XY*/
#include &lt;delayms.h>

int main (void)
{
        char c=0;
        char INTRO[8]="TECLEA\n";
        int T=100;
        
        delayms(100);

        uart_open(SET_115200_8N1);

        uart_puts(INTRO);
        while(c!=13)
        {
                if(uart_kbhit()==1)
                {
                        c=uart_getc()-'0';
                        uart_putc(c+'0');
                        T=100*c;
                }
                delayms(T);
                output_high(PIN_C2);
                delayms(T);
                output_low(PIN_C2);
        }
        uart_close();

        return 0;
}
                </screen>
                </sect2>
        </sect1>

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