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/* ...this is an external for the memPIO interface...
*
* memPIO is a USB-interface with 3 8bit ports
* each port can be either input or output
* (honestly: port3 is divided into 2 subports of 4bits with independent directions,
* however, this is not yet implemented)
*
*
* "mode <port0> <port1> <port2> <port3>" : mode can be either 0 (input) or 1 (output)
* "mode <allports>": like above, but set all ports at once to the same value
* "bang": manual polling
* "set <val0> <val1> <val2> <val3>": write values to ports in output-mode
* "set <val>" write the same value to all ports
*
* TODO: currently two [memPIO]s interfere
*
*
* copyleft:forum::für::umläute:2004
*/
/* This only works on Microsoft Windows */
#ifdef _WIN32
#include <conio.h>
#include "m_pd.h"
// IMPORTANT: Adjust this path to your needs
//#import "c:\windows\system\memx.ocx"
#import "c:\winnt\system32\memx.ocx"
/* do a little help thing */
typedef struct memPIO
{
t_object x_obj;
MEMXLib::_DmeMPIOPtr pio;
int input[3];
t_outlet *outlet[3];
} t_memPIO;
t_class *memPIO_class;
static void memPIO_help(void)
{
post("\n\n...mem-PIO for pd"
"\n\n(l) forum::für::umläute 2004\n"
"this software is under the GnuGPL that is provided with these files\n");
post("usage:");
post("\t'mode <1|0>': set all ports to writable(1) or readable(0=default)");
post("\t'mode <1|0> <1|0> <1|0>': set the read/write-mode of the individual ports");
post("\t'bang': returns the values of all readable ports");
post("\t'set <val>': set all writable ports to the 8bit-value");
post("\t'set <val1> <val2> <val3>': set writable ports to the corresponding value");
}
static void memPIO_bang(t_memPIO*x){
int port=3;
x->pio->UpdateCache ();
while(port--){
if (!x->input[port]){
long l=x->pio->CachedPort [port+1];
outlet_float(x->outlet[port], l);
}
}
}
static void memPIO_mode(t_memPIO*x, t_symbol *s, int argc, t_atom*argv){
MEMXLib::IO dir;
bool out;
switch(argc){
default:
error("memPIO: \"mode\" message needs 1 or 3 arguments, have %d", argc);
return;
case 1:
out=(atom_getfloat(argv)>0.f);
dir=(out)?MEMXLib::DirOut:MEMXLib::DirIn;
x->pio->DirPort1 =dir; x->input[0]=out;
x->pio->DirPort2 =dir; x->input[1]=out;
x->pio->DirPort3H=dir; x->input[2]=out;
x->pio->DirPort3L=dir;
break;
case 3:
out=(atom_getfloat(argv+0)>0.f);
x->pio->DirPort1 =(out)?MEMXLib::DirOut:MEMXLib::DirIn; x->input[0]=out;
out=(atom_getfloat(argv+1)>0.f);
x->pio->DirPort2 =(out)?MEMXLib::DirOut:MEMXLib::DirIn; x->input[1]=out;
out=(atom_getfloat(argv+2)>0.f);
x->pio->DirPort3H=(out)?MEMXLib::DirOut:MEMXLib::DirIn; x->input[2]=out;
x->pio->DirPort3L=(out)?MEMXLib::DirOut:MEMXLib::DirIn;
}
}
static void memPIO_set(t_memPIO*x, t_symbol*s, int argc, t_atom*argv){
int port=3;
unsigned char val[4]={0,0,0,0};
switch(argc){
case 1:
val[0]=val[1]=val[2]=val[3]=atom_getfloat(argv);
break;
case 3:
val[0]=atom_getfloat(argv+0);
val[1]=atom_getfloat(argv+1);
val[2]=atom_getfloat(argv+2);
break;
default:
break;
}
while(port--)
if(x->input[port]){
x->pio->port[port+1]=val[port];
}
}
static void memPIO_free(t_memPIO*x)
{
x->pio.Release ();
}
void *memPIO_new(void)
{
int i;
bool found=false;
t_memPIO *x = (t_memPIO *)pd_new(memPIO_class);
// because we use a ActiveX we need to initialize OLE for this app
OleInitialize (NULL);
// try to create the ActiveX-instance
x->pio.CreateInstance (__uuidof(MEMXLib::meMPIO));
// on error, there is no meM-ActiveX installed
if (x->pio == NULL)
{
error("meM ActiveX not installed!");
return 0;
}
found=false;
// search until the highest-possible Card-ID
for(i = 0; i < x->pio->LastAttached; i++)
{
// select a device
x->pio->CardId = i+1;
// if selected device is attached, return
if (x->pio->Attached){
found=true;
break;
}
}
i++;
if(!found){
memPIO_free(x);
return 0;
}
/* these are all outputs */
for (int n=0; n<3; n++) {
x->outlet[n] = outlet_new(&x->x_obj, 0);
x->input[n]=0;
}
return (void *)x;
}
void memPIO_setup(void)
{
post("\t the memPIO external");
post("\t (l) forum::für::umläute");
post("\t compiled: "__DATE__"");
memPIO_class = class_new(gensym("memPIO"),
(t_newmethod)memPIO_new,
(t_method)memPIO_free,
sizeof(t_memPIO),
0, A_NULL);
class_addmethod(memPIO_class, (t_method)memPIO_help, gensym("help"), A_NULL);
class_addmethod(memPIO_class, (t_method)memPIO_mode, gensym("mode"), A_GIMME, A_NULL);
class_addmethod(memPIO_class, (t_method)memPIO_set, gensym("set"), A_GIMME, A_NULL);
class_addbang(memPIO_class, (t_method)memPIO_bang);
}
#endif /* _WIN32 */
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