// this function implements the CDCACM usb setup control transfer.
static int
cdcacm_control_transfer(struct setup *setup, byte *buffer, int length)
{
#if SODEBUG
if ((setup->requesttype & 0x60) != (SETUP_TYPE_CLASS<<5)) {
return 0;
}
if ((setup->requesttype & 0x1f) != (SETUP_RECIP_INTERFACE<<0)) {
return 0;
}
if (setup->index != 0 /*comm*/) {
return 0;
}
#endif
switch(setup->request) {
case CDCRQ_SEND_ENCAPSULATED_COMMAND:
assert(! (setup->requesttype & 0x80));
length = 0;
break;
case CDCRQ_GET_ENCAPSULATED_RESPONSE:
assert(setup->requesttype & 0x80);
assert(length <= 64);
ilmemset(buffer, 0, length);
break;
case CDCRQ_SET_LINE_CODING:
assert(! (setup->requesttype & 0x80));
assert(length == sizeof(line_coding));
ilmemcpy(line_coding, buffer, sizeof(line_coding));
length = 0;
break;
case CDCRQ_GET_LINE_CODING:
assert(setup->requesttype & 0x80);
assert(length == sizeof(line_coding));
ilmemcpy(buffer, line_coding, sizeof(line_coding));
break;
case CDCRQ_SET_CONTROL_LINE_STATE:
assert(! (setup->requesttype & 0x80));
length = 0;
break;
case CDCRQ_SEND_BREAK:
length = 0;
break;
default:
assert(0);
length = 0;
break;
}
return length;
}
// this function implements the CDCACM usb setup control transfer.
static int
cdcacm_control_transfer(struct setup *setup, byte *buffer, int length)
{
#if SODEBUG
if ((setup->requesttype & 0x60) != (SETUP_TYPE_CLASS<<5)) {
return 0;
}
if ((setup->requesttype & 0x1f) != (SETUP_RECIP_INTERFACE<<0)) {
return 0;
}
if (setup->index != 0 /*comm*/) {
return 0;
}
#endif
switch(setup->request) {
case CDCRQ_SEND_ENCAPSULATED_COMMAND:
assert(! (setup->requesttype & 0x80));
length = 0;
break;
case CDCRQ_GET_ENCAPSULATED_RESPONSE:
assert(setup->requesttype & 0x80);
assert(length <= 64);
ilmemset(buffer, 0, length);
break;
case CDCRQ_SET_LINE_CODING:
assert(! (setup->requesttype & 0x80));
assert(length == sizeof(line_coding));
ilmemcpy(line_coding, buffer, sizeof(line_coding));
length = 0;
break;
case CDCRQ_GET_LINE_CODING:
assert(setup->requesttype & 0x80);
assert(length == sizeof(line_coding));
ilmemcpy(buffer, line_coding, sizeof(line_coding));
break;
case CDCRQ_SET_CONTROL_LINE_STATE:
assert(! (setup->requesttype & 0x80));
// We can sense RTS and DTR here, that's it.
// Bit 0 of setup->value is the state of DTR, and
// bit 1 is the state of RTS.
// if (setup->value & 0x01) {
// TRISDbits.TRISD0 = 0;
// PORTDbits.RD0 = 1;
// }
// else {
// TRISDbits.TRISD0 = 0;
// PORTDbits.RD0 = 0;
// }
// if (setup->value & 0x02) {
// TRISDbits.TRISD1 = 0;
// PORTDbits.RD1 = 1;
// }
// else {
// TRISDbits.TRISD1 = 0;
// PORTDbits.RD1 = 0;
// }
length = 0;
break;
case CDCRQ_SEND_BREAK:
length = 0;
break;
default:
assert(0);
length = 0;
break;
}
return length;
}
