void JIG_Task(void)
{
static int bytes_out = 0, bytes_in = 0;
Endpoint_SelectEndpoint(2);
if (Endpoint_IsReadWriteAllowed())
{
Endpoint_Discard_Stream(8, NO_STREAM_CALLBACK);
Endpoint_ClearOUT();
bytes_out += 8;
if (bytes_out >= 64) {
state = p5_challenged;
expire = 50; // was 90
}
}
Endpoint_SelectEndpoint(1);
if (Endpoint_IsReadWriteAllowed() && state == p5_challenged && expire == 0)
{
if (bytes_in < 64) {
Endpoint_Write_PStream_LE(&jig_response[bytes_in], 8, NO_STREAM_CALLBACK);
Endpoint_ClearIN();
bytes_in += 8;
if (bytes_in >= 64) {
state = p5_responded;
expire = 15;
}
}
}
}
uint8_t CDC_Device_SendString_P(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
const char* const String)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return ENDPOINT_RWSTREAM_DeviceDisconnected;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
return Endpoint_Write_PStream_LE(String, strlen_P(String), NULL);
}
uint8_t CDC_Device_SendData_P(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
const void* const Buffer,
const uint16_t Length)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return ENDPOINT_RWSTREAM_DeviceDisconnected;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
return Endpoint_Write_PStream_LE(Buffer, Length, NULL);
}
void JIG_Task (void) {
static int bytes_out = 0, bytes_in = 0;
Endpoint_SelectEndpoint(2);
if (Endpoint_IsReadWriteAllowed()) {
Endpoint_Read_Stream_LE (&jig_challenge_res[bytes_out], 8, NO_STREAM_CALLBACK) ;
Endpoint_ClearOUT();
bytes_out += 8;
if (bytes_out >= 64) {
//prepare the response (by guess?)
jig_challenge_res[1]--;
jig_challenge_res[3]++;
jig_challenge_res[6]++;
HMACBlock(&jig_challenge_res[CHALLENGE_INDEX],20);
USB_USBTask(); //just in case
HMACDone();
jig_challenge_res[7] = jig_id[0];
jig_challenge_res[8] = jig_id[1];
int i;
for( i = 0; i < 20; i++)
jig_challenge_res[9+i] = hmacdigest[i];
state = p5_challenged;
expire = 50; // was 90
}
}
Endpoint_SelectEndpoint(1);
if (Endpoint_IsReadWriteAllowed() && state == p5_challenged && expire == 0) {
if ( bytes_in < 64) {
Endpoint_Write_PStream_LE(&jig_challenge_res[bytes_in], 8, NO_STREAM_CALLBACK);
Endpoint_ClearIN();
bytes_in += 8;
if ( bytes_in >= 64) {
state = p5_responded;
expire = 50;
}
}
}
}
