void main(void)
{
init_boot();
init_usb();
while(1)
{
usb_sleep();
dispatch_usb_event();
if((application_data.invalid == 0) &&
(GET_ACTIVE_CONFIGURATION() > FLASH_CONFIGURATION))
{
application_data.main();
INTCON = 0; // Forbid interrupts
}
}
}
u8 ep0_usb_std_request(void) {
// hack to avoid register allocation bug in sdcc
static u8 unknown_request;
unknown_request = FALSE;
if (SetupBuffer.request_type != STANDARD) {
return FALSE;
}
switch (SetupBuffer.bRequest) {
case CLEAR_FEATURE:
debug_usb("CLEAR_FEATURE\n");
// TODO not implemented
break;
case GET_CONFIGURATION:
debug_usb("GET_CONFIGURATION\n");
sourceData = &GET_ACTIVE_CONFIGURATION();
num_bytes_to_be_send = 1;
break;
case GET_DESCRIPTOR:
debug_usb("GET_DESCRIPTOR\n");
switch (SetupBuffer.bDescType) {
case DEVICE_DESCRIPTOR:
debug_usb("device\n");
sourceData = (u8 *) device_descriptor;
num_bytes_to_be_send = device_descriptor->bLength;
break;
case CONFIGURATION_DESCRIPTOR:
debug_usb("configuration\n");
sourceData = configuration_descriptor[SetupBuffer.bDescIndex];
num_bytes_to_be_send =
((USB_Configuration_Descriptor*) sourceData)->wTotalLength;
break;
case STRING_DESCRIPTOR:
debug_usb("string\n");
sourceData = string_descriptor[SetupBuffer.bDescIndex];
num_bytes_to_be_send = sourceData[0];
break;
default:
debug_usb("unknown\n");
// This is required to stall the DEVICE_QUALIFIER request
unknown_request = TRUE;
break;
}
break;
case GET_INTERFACE:
debug_usb("GET_INTERFACE\n");
// TODO not implemented
break;
case GET_STATUS:
debug_usb("GET_STATUS\n");
// TODO not implemented
break;
case SET_ADDRESS:
debug_usb("SET_ADDRESS\n");
SET_DEVICE_STATE(ADDRESS_PENDING_STATE)
;
break;
case SET_CONFIGURATION:
debug_usb("SET_CONFIGURATION\n");
// is this configuration valid ?
if (device_descriptor->bNumConfigurations
>= SetupBuffer.bConfigurationValue) {
coming_cfg = SetupBuffer.bConfigurationValue;
SET_DEVICE_STATE(CONFIGURATION_PENDING_STATE);
} else // invalid configuration
{
debug_usb("invalid configuration\n");
// Reply with a request error (STALL)
unknown_request = TRUE;
}
break;
case SET_FEATURE:
debug_usb("SET_FEATURE\n");
// TODO not implemented
break;
case SET_INTERFACE:
debug_usb("SET_INTERFACE\n");
// TODO not implemented
break;
// case SYNCH_FRAME:
// only for isochronous synchronization
// break;
default:
unknown_request = TRUE;
break;
}
return !unknown_request;
}
