void* uartSetEventNotifcation (void *inputParameters)
{
int rStatus, transferCompleted = 0, length = CY_UART_EVENT_NOTIFICATION_LEN;
CY_DEVICE *device;
libusb_device_handle *devHandle;
struct libusb_transfer *transfer;
UINT16 errorStatus = 0;
UCHAR uartStatus[CY_UART_EVENT_NOTIFICATION_LEN];
struct timeval time;
CY_EVENT_NOTIFICATION_CB_FN callbackFn;
NOTIFICATION_CB_PARAM *cbParameters = (NOTIFICATION_CB_PARAM*)inputParameters;
callbackFn = cbParameters->notificationCbFn;
device = (CY_DEVICE *)cbParameters->handle;
devHandle = device->devHandle;
callbackFn = cbParameters->notificationCbFn;
device->uartTransfer = transfer = libusb_alloc_transfer(0);
if (transfer == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error in allocating trasnfer \n");
errorStatus |= CY_ERROR_EVENT_FAILED_BIT;
callbackFn(errorStatus);
goto END;
}
while (device->uartCancelEvent == false){
libusb_fill_interrupt_transfer (transfer, devHandle, device->interruptEndpoint, uartStatus, length,
uart_notification_cb, &transferCompleted, CY_EVENT_NOTIFICATION_TIMEOUT);
rStatus = libusb_submit_transfer (transfer);
if (rStatus){
CY_DEBUG_PRINT_ERROR ("CY:Error submitting uart interrupt token ... Libusb error is %d\n", rStatus);
errorStatus |= CY_ERROR_EVENT_FAILED_BIT;
callbackFn(errorStatus);
break;
}
time.tv_sec = 0;
time.tv_usec = 50;//polling timeout.
while (transferCompleted == 0){
libusb_handle_events_timeout (glContext, &time);
}
transferCompleted = 0;
if (transfer->status == LIBUSB_TRANSFER_COMPLETED){
CY_DEBUG_PRINT_INFO ("Successfully read and recieved data %d \n", transfer->actual_length);
memcpy (&errorStatus, &uartStatus[8], 2);
printf ("%x %x ", uartStatus[8], uartStatus[9]);
callbackFn (errorStatus);
errorStatus = 0;
}
else{
errorStatus |= CY_ERROR_EVENT_FAILED_BIT;
if (device->uartCancelEvent == false){
CY_DEBUG_PRINT_ERROR ("CY:Error uart interrupt thread encountered error... Libusb transmission error is %d \n", transfer->status);
device->uartThreadId = 0;
callbackFn(errorStatus);
}
break;
}
}
CY_DEBUG_PRINT_INFO ("Exiting notification thread \n");
libusb_free_transfer (transfer);
END:
free (inputParameters);
return NULL;
}
/*
This API is used to read JTAG data from device interface
*/
CY_RETURN_STATUS CyJtagRead (
CY_HANDLE handle,
CY_DATA_BUFFER *readBuffer,
UINT32 ioTimeout
)
{
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT16 wValue, wIndex, wLength;
UINT16 bmRequestType, bmRequest;
bmRequestType = CY_VENDOR_REQUEST_HOST_TO_DEVICE;
bmRequest = CY_JTAG_READ_CMD;
wValue = readBuffer->length;
wIndex = 0;
wLength = 0;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle.. Function is %s \n", __func__);
return CY_ERROR_INVALID_HANDLE;
}
if ((readBuffer == NULL) || (readBuffer->buffer == NULL) || (readBuffer->length == 0)){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid parameter.. Function is %s \n", __func__);
return CY_ERROR_INVALID_PARAMETER;
}
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
if (device->deviceType != CY_TYPE_JTAG) {
CY_DEBUG_PRINT_ERROR ("CY:Error device type is not jtag ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
readBuffer->transferCount = 0;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, NULL, wLength, ioTimeout);
if (rStatus < 0){
CY_DEBUG_PRINT_INFO ("CY: JTAG Vendor Command failed %d.. Function is %s \n", rStatus, __func__);
return CY_ERROR_REQUEST_FAILED;
}
rStatus = libusb_bulk_transfer (devHandle, CY_JTAG_IN_EP, readBuffer->buffer, readBuffer->length,
(int*)&(readBuffer->transferCount), ioTimeout);
if (rStatus == CY_SUCCESS){
CY_DEBUG_PRINT_ERROR ("CY: Number of bytes read is .... %d \n", readBuffer->transferCount);
return CY_SUCCESS;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:TimeOut error ...Function is %s \n", __func__);
return CY_ERROR_IO_TIMEOUT;
}
else if (rStatus == LIBUSB_ERROR_PIPE){
CY_DEBUG_PRINT_ERROR ("CY:Pipe error Function is %s \n", __func__);
CyResetPipe (handle, CY_JTAG_IN_EP);
return CY_ERROR_PIPE_HALTED;
}
else if (rStatus == LIBUSB_ERROR_OVERFLOW){
CY_DEBUG_PRINT_ERROR ("CY:Error Buffer Overflow..Function is %s \n", __func__);
return CY_ERROR_BUFFER_OVERFLOW;
}
else if (rStatus == LIBUSB_ERROR_NO_DEVICE) {
CY_DEBUG_PRINT_ERROR ("CY: Device Disconnected ....Function is %s \n", __func__);
return CY_ERROR_DEVICE_NOT_FOUND;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function is %s ...Libusb Error is %d!\n", __func__, rStatus);
return CY_ERROR_REQUEST_FAILED;
}
}