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/* cd4094.c MP 20070312 */
/* Emulate a cd4094b */
#include "m_pd.h"
typedef struct _cd4094
{
t_object x_obj;
t_outlet *x_Q1Out;
t_outlet *x_Q2Out;
t_outlet *x_Q3Out;
t_outlet *x_Q4Out;
t_outlet *x_Q5Out;
t_outlet *x_Q6Out;
t_outlet *x_Q7Out;
t_outlet *x_Q8Out;
t_outlet *x_QSOut;
t_outlet *x_QprimeSOut;
int x_clock;
int x_data;
int x_data_in;
int x_strobe;
int x_output_enable;
int x_qprime;
t_inlet *x_StrobeIn;/* Strobe takes one or zero as acceptable inputs. */
t_inlet *x_DataIn;/* Data takes one or zero as acceptable inputs. */
t_inlet *x_OutputEnable;/* Output Enable takes one or zero as acceptable inputs. */
/* The main inlet (clock) should accept a bang or a one as valid clocks. */
/* If a one is received, it must be followed by a zero before the clock will work again. */
} t_cd4094;
static t_class *cd4094_class;
void cd4094_setup(void);
static void *cd4094_new(t_symbol *s, int argc, t_atom *argv);
static void cd4094_free(t_cd4094 *x);
static void cd4094_bang(t_cd4094 *x);
static void cd4094_float(t_cd4094 *x, t_float f);
static void cd4094_strobe(t_cd4094 *x, t_float f);
static void cd4094_data(t_cd4094 *x, t_float f);
static void cd4094_output_enable(t_cd4094 *x, t_float f);
static void cd4094_update_outlets(t_cd4094 *x);
static void cd4094_float(t_cd4094 *x, t_float f)
{
if (f == 1)
{ /* if clock is high and was low, clock it. */
if ((x->x_clock == 0)&&(x->x_strobe == 1))
{
x->x_data <<= 1;
if (x->x_data_in != 0) x->x_data |= 1;
cd4094_update_outlets(x);
}
x->x_clock = 1;
}
else if (f == 0)
{
if (x->x_clock == 1) /* if clock was high and is low, clock Q prime. */
{
x->x_qprime = ((x->x_data & 256) != 0)?1:0;
outlet_float(x->x_QprimeSOut, x->x_qprime);
}
x->x_clock = 0;
}
else post("cd4094 accepts bang, 1 or 0.");
}
static void cd4094_bang(t_cd4094 *x)
{
if (x->x_strobe == 1)
{
/* rising edge clock */
x->x_data <<= 1;
if (x->x_data_in != 0) x->x_data |= 1;
cd4094_update_outlets(x);
/* Q'7 is clocked on a falling edge */
x->x_qprime = ((x->x_data & 256) != 0)?1:0;
outlet_float(x->x_QprimeSOut, x->x_qprime);
}
}
static void cd4094_strobe(t_cd4094 *x, t_float f)
{
if (f == 1)
{
x->x_strobe = 1;
}
else if (f == 0)
{
x->x_strobe = 0;
}
else
{
post("cd4094 strobe takes 1 or 0 only.");
return;
}
}
static void cd4094_output_enable(t_cd4094 *x, t_float f)
{
if (f == 1)
{
x->x_output_enable = 1;
cd4094_update_outlets(x);
}
else if (f == 0)
{
x->x_output_enable = 0;
}
else
{
post("cd4094 output enable takes 1 or 0 only.");
return;
}
}
static void cd4094_data(t_cd4094 *x, t_float f)
{
if (f == 1) x->x_data_in = 1;
else if (f == 0) x->x_data_in = 0;
else
{
post("cd4094 data takes 1 or 0 only.");
return;
}
}
static void cd4094_update_outlets(t_cd4094 *x)
{
outlet_float(x->x_QprimeSOut, ((x->x_qprime) != 0)?1:0);
outlet_float(x->x_QSOut, ((x->x_data & 256) != 0)?1:0);
if (x->x_output_enable != 0)
{
outlet_float(x->x_QSOut, ((x->x_data & 256) != 0)?1:0);
outlet_float(x->x_Q8Out, ((x->x_data & 128) != 0)?1:0);
outlet_float(x->x_Q7Out, ((x->x_data & 64) != 0)?1:0);
outlet_float(x->x_Q6Out, ((x->x_data & 32) != 0)?1:0);
outlet_float(x->x_Q5Out, ((x->x_data & 16) != 0)?1:0);
outlet_float(x->x_Q4Out, ((x->x_data & 8) != 0)?1:0);
outlet_float(x->x_Q3Out, ((x->x_data & 4) != 0)?1:0);
outlet_float(x->x_Q2Out, ((x->x_data & 2) != 0)?1:0);
outlet_float(x->x_Q1Out, ((x->x_data & 1) != 0)?1:0);
}
}
static void cd4094_free(t_cd4094 *x)
{
return;
}
static void *cd4094_new(t_symbol *s, int argc, t_atom *argv)
{
t_cd4094 *x;
x = (t_cd4094 *)pd_new(cd4094_class);
if (x == NULL) return (x);
x->x_Q1Out = outlet_new((t_object *)x, &s_float);
x->x_Q2Out = outlet_new((t_object *)x, &s_float);
x->x_Q3Out = outlet_new((t_object *)x, &s_float);
x->x_Q4Out = outlet_new((t_object *)x, &s_float);
x->x_Q5Out = outlet_new((t_object *)x, &s_float);
x->x_Q6Out = outlet_new((t_object *)x, &s_float);
x->x_Q7Out = outlet_new((t_object *)x, &s_float);
x->x_Q8Out = outlet_new((t_object *)x, &s_float);
x->x_QSOut = outlet_new((t_object *)x, &s_float);
x->x_QprimeSOut = outlet_new((t_object *)x, &s_float);
x->x_StrobeIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("strobe"));
x->x_DataIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("data"));
x->x_OutputEnable = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("enableoutput"));
return (x);
}
void cd4094_setup(void)
{
cd4094_class = class_new(gensym("cd4094"),
(t_newmethod)cd4094_new,
(t_method)cd4094_free,
sizeof(t_cd4094), 0, 0); /* no arguments */
class_addbang(cd4094_class, cd4094_bang);
class_addfloat(cd4094_class, cd4094_float);
class_addmethod(cd4094_class, (t_method)cd4094_strobe, gensym("strobe"), A_FLOAT, 0);
class_addmethod(cd4094_class, (t_method)cd4094_data, gensym("data"), A_FLOAT, 0);
class_addmethod(cd4094_class, (t_method)cd4094_output_enable, gensym("enableoutput"), A_FLOAT, 0);
}
/* end cd4094.c */
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