/*Api will reset the spi module*/
CY_RETURN_STATUS CySpiReset (CY_HANDLE handle)
{
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT16 wValue, wIndex, wLength, bmRequestType, bmRequest;;
UINT16 scbIndex = 0;
UINT32 ioTimeout = CY_USB_SERIAL_TIMEOUT;
if (handle == NULL)
return CY_ERROR_INVALID_HANDLE;
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
if (device->deviceType != CY_TYPE_SPI) {
CY_DEBUG_PRINT_ERROR ("CY:Error device type is not spi ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
scbIndex = device->interfaceNum;
if (scbIndex > 0)
scbIndex = 1;
bmRequestType = CY_VENDOR_REQUEST_DEVICE_TO_HOST;
bmRequest = CY_SPI_RESET_CMD;
wValue = ((scbIndex << CY_SCB_INDEX_POS));
wIndex = 0;
wLength = 0;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,wValue, wIndex, NULL, wLength, ioTimeout);
if (rStatus < 0){
CY_DEBUG_PRINT_ERROR ("CY:Error in sending spi reset command...Libusb error is %d\n", rStatus);
return rStatus;
}
return CY_SUCCESS;
}
/*
The API is used to programme user flash area
*/
CYWINEXPORT CY_RETURN_STATUS WINCALLCONVEN CyReadUserFlash (
CY_HANDLE handle, /*Valid device handle*/
CY_DATA_BUFFER *readBuffer, /*data buffer containing buffer address, length to write*/
UINT32 flashAddress, /*Address to the data is written*/
UINT32 ioTimeout /*Timeout value of the API*/
)
{
UINT16 wValue, wIndex, wLength;
UINT8 bmRequestType, bmRequest;
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
if (handle == NULL)
return CY_ERROR_INVALID_HANDLE;
if ((readBuffer == NULL) || (readBuffer == NULL))
return CY_ERROR_INVALID_PARAMETER;
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
bmRequestType = CY_VENDOR_REQUEST_DEVICE_TO_HOST;
bmRequest = CY_READ_USER_FLASH_CMD;
wValue = 0;
wIndex = flashAddress;
wLength = readBuffer->length;
CY_DEBUG_PRINT_INFO ("CY:The Length is %d , Value is %d and index is %d\n", wLength, wValue, wIndex);
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, readBuffer->buffer, wLength, ioTimeout);
if (rStatus > 0){
(readBuffer->transferCount) = rStatus;
return CY_SUCCESS;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error ..function is %s \n", __func__);
(readBuffer->transferCount) = 0;
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function %s ...libusb error is %d!\n", __func__, rStatus);
(readBuffer->transferCount) = 0;
return CY_ERROR_REQUEST_FAILED;
}
}
CYWINEXPORT CY_RETURN_STATUS WINCALLCONVEN CyGetGpioValue (
CY_HANDLE handle, /*Valid device handle*/
UINT8 gpioNumber, /*GPIO configuration value*/
UINT8 *value /*Value that needs to be set*/
)
{
UINT16 wValue, wIndex, wLength;
UINT8 bmRequestType, bmRequest, buffer[CY_GPIO_GET_LEN];
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT32 ioTimeout = CY_USB_SERIAL_TIMEOUT;
if (handle == NULL)
return CY_ERROR_INVALID_HANDLE;
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
bmRequestType = CY_VENDOR_REQUEST_DEVICE_TO_HOST;
bmRequest = CY_GPIO_GET_VALUE_CMD;
wValue = gpioNumber;
wIndex = 0x00;
wLength = CY_GPIO_GET_LEN;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, buffer, wLength, ioTimeout);
if (rStatus == CY_GPIO_GET_LEN){
CY_DEBUG_PRINT_INFO ("CY: Get GPIO Configuration succedded...size is %d \n", rStatus);
//return buffer will tell the status of the command
if (buffer[0] == 0){
(*value) = buffer[1];
return CY_SUCCESS;
}
else
return CY_ERROR_REQUEST_FAILED;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error ..function is %s \n", __func__);
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function %s ...libusb error is %d!\n", __func__, rStatus);
return CY_ERROR_REQUEST_FAILED;
}
}
/*The API is used to cancel the uart Event notification*/
CYWINEXPORT CY_RETURN_STATUS WINCALLCONVEN CyAbortEventNotification(
CY_HANDLE handle /*Valid handle to communicate with device*/
)
{
CY_DEVICE *device;
device = (CY_DEVICE*)handle;
pthread_mutex_lock (&device->notificationLock);
if (device->deviceType == CY_TYPE_UART){
if ((device->uartThreadId == 0)){
CY_DEBUG_PRINT_ERROR ("CY:Error uart event notification not created ....function is %s \n", __func__);
pthread_mutex_unlock (&device->notificationLock);
return CY_ERROR_REQUEST_FAILED;
}
device->uartCancelEvent = true;
libusb_cancel_transfer (device->uartTransfer);
pthread_join (device->uartThreadId, NULL);
device->uartThreadId = 0;
device->uartCancelEvent = false;
pthread_mutex_unlock (&device->notificationLock);
return CY_SUCCESS;
}
else if (device->deviceType == CY_TYPE_SPI){
if ((device->spiThreadId == 0)){
CY_DEBUG_PRINT_ERROR ("CY:Error spi event notification not created ....function is %s \n", __func__);
pthread_mutex_unlock (&device->notificationLock);
return CY_ERROR_REQUEST_FAILED;
}
device->spiCancelEvent = true;
libusb_cancel_transfer (device->spiTransfer);
pthread_join (device->spiThreadId, NULL);
device->spiThreadId = 0;
device->spiCancelEvent = false;
pthread_mutex_unlock (&device->notificationLock);
return CY_SUCCESS;
}
else {
CY_DEBUG_PRINT_ERROR ("CY:Error.. unknown device type ....function is %s \n", __func__);
pthread_mutex_unlock (&device->notificationLock);
return CY_ERROR_REQUEST_FAILED;
}
}
/*
* This API disables the Jtag module
*/
CY_RETURN_STATUS CyJtagDisable (
CY_HANDLE handle
)
{
UINT16 wValue, wIndex, wLength;
UINT16 bmRequestType, bmRequest;
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT32 ioTimeout = CY_USB_SERIAL_TIMEOUT;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle.. Function is %s \n", __func__);
return CY_ERROR_INVALID_HANDLE;
}
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;
}
bmRequestType = CY_VENDOR_REQUEST_HOST_TO_DEVICE;
bmRequest = CY_JTAG_DISABLE_CMD;
wValue = 0x00;
wIndex = 0;
wLength = 0;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, NULL, wLength, ioTimeout);
if (rStatus >= 0){
CY_DEBUG_PRINT_INFO ("CY: JTAG disable successfully \n");
return CY_SUCCESS;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error while enabling JTAG ..\n");
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY:Error while enabling JTAG ...libusb error is %d function is %s!\n", rStatus, __func__);
return CY_ERROR_REQUEST_FAILED;
}
}
/*
The API resets the device
*/
CYWINEXPORT CY_RETURN_STATUS WINCALLCONVEN CyResetDevice (
CY_HANDLE handle /*Valid device handle*/
)
{
UINT16 wValue, wIndex, wLength;
UINT8 bmRequestType, bmRequest;
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT32 ioTimeout = CY_USB_SERIAL_TIMEOUT;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle \n");
return CY_ERROR_INVALID_HANDLE;
}
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
bmRequestType = CY_VENDOR_REQUEST_DEVICE_TO_HOST;
bmRequest = CY_DEVICE_RESET_CMD;
wValue = 0xA6B6;
wIndex = 0xADBA;
wLength = 0;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, NULL, wLength, ioTimeout);
//return buffer will tell the status of the command
if (rStatus == LIBUSB_SUCCESS)
return CY_SUCCESS;
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error ..function is %s \n", __func__);
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function %s ...libusb error is %d!\n", __func__, rStatus);
return CY_ERROR_REQUEST_FAILED;
}
}
/*
This API is used to Read the Bootloder version
*/
CY_RETURN_STATUS CyGetFirmwareVersion(
CY_HANDLE handle,
CY_FIRMWARE_VERSION *firmwareVersion
)
{
UINT16 wValue, wIndex, wLength;
UINT8 bmRequestType, bmRequest;
int rStatus, ioTimeout = CY_USB_SERIAL_TIMEOUT;
CY_DEVICE *device;
libusb_device_handle *devHandle;
if (handle == NULL)
return CY_ERROR_INVALID_HANDLE;
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
bmRequestType = CY_VENDOR_REQUEST_DEVICE_TO_HOST;
bmRequest = CY_GET_VERSION_CMD;
wValue = 0x00;
wIndex = 0x00;
wLength = CY_GET_FIRMWARE_VERSION_LEN;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, (unsigned char*)firmwareVersion, wLength, ioTimeout);
if (rStatus > 0){
return CY_SUCCESS;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error ..function is %s \n", __func__);
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function %s ...libusb error is %d!\n", __func__, rStatus);
return CY_ERROR_REQUEST_FAILED;
}
}
CYWINEXPORT CY_RETURN_STATUS WINCALLCONVEN CySetEventNotification(
CY_HANDLE handle, /*Valid handle to communicate with device*/
CY_EVENT_NOTIFICATION_CB_FN notificationCbFn /*Call back function in case on error during Uart data transfers*/
)
{
CY_DEVICE *device;
NOTIFICATION_CB_PARAM *args = NULL;
int ret;
pthread_t threadID;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle.. Function is %s \n", __func__);
return CY_ERROR_INVALID_HANDLE;
}
if (notificationCbFn == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid parameter.. Function is %s \n", __func__);
return CY_ERROR_INVALID_PARAMETER;
}
device = (CY_DEVICE*)handle;
pthread_mutex_lock (&device->notificationLock);
args = (NOTIFICATION_CB_PARAM *)malloc (sizeof (NOTIFICATION_CB_PARAM));
args->handle = handle;
args->notificationCbFn = notificationCbFn;
if (device->deviceType == CY_TYPE_SPI){
if (device->spiThreadId != 0) {
CY_DEBUG_PRINT_ERROR ("CY:Error already notification thread exists ... Function is %s \n", __func__);
pthread_mutex_unlock (&device->notificationLock);
return CY_ERROR_STATUS_MONITOR_EXIST;
}
ret = pthread_create (&threadID, NULL, spiSetEventNotifcation, (void *) args);
if (ret == 0){
device->spiThreadId = threadID;
pthread_mutex_unlock (&device->notificationLock);
return CY_SUCCESS;
}
else {
device->spiThreadId = 0;
free (args);
pthread_mutex_unlock (&device->notificationLock);
CY_DEBUG_PRINT_ERROR ("CY:Error creating spi notification thread ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
}
else if (device->deviceType == CY_TYPE_UART){
if (device->uartThreadId != 0) {
CY_DEBUG_PRINT_ERROR ("CY:Error already notification thread exists ... Function is %s \n", __func__);
pthread_mutex_unlock (&device->notificationLock);
return CY_ERROR_STATUS_MONITOR_EXIST;
}
ret = pthread_create (&threadID, NULL, uartSetEventNotifcation, (void *) args);
if (ret == 0){
device->uartThreadId = threadID;
pthread_mutex_unlock (&device->notificationLock);
return CY_SUCCESS;
}
else {
device->uartThreadId = 0;
free (args);
pthread_mutex_unlock (&device->notificationLock);
CY_DEBUG_PRINT_ERROR ("CY:Error creating uart notification thread ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
}
else {
CY_DEBUG_PRINT_ERROR ("CY:Error unknown device type ....Function is %s \n", __func__);
pthread_mutex_unlock (&device->notificationLock);
return CY_ERROR_REQUEST_FAILED;
}
}
void* spiSetEventNotifcation (void *inputParameters)
{
int transferCompleted = 0, length = CY_SPI_EVENT_NOTIFICATION_LEN;
CY_DEVICE *device;
libusb_device_handle *devHandle;
struct libusb_transfer *transfer;
UINT8 spiStatus = 0;
UINT16 errorStatus = 0;
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->spiTransfer = 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;
}
libusb_fill_interrupt_transfer (transfer, devHandle, device->interruptEndpoint, &spiStatus, length,
spi_notification_cb, &transferCompleted, CY_EVENT_NOTIFICATION_TIMEOUT);
while (device->spiCancelEvent == false){
if (libusb_submit_transfer (transfer)){
CY_DEBUG_PRINT_ERROR ("CY:Error submitting spi interrupt token ... \n");
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 (NULL, &time);
}
transferCompleted = 0;
if (transfer->status == LIBUSB_TRANSFER_COMPLETED){
CY_DEBUG_PRINT_INFO ("Successfully read and recieved data %d \n", transfer->actual_length);
if (spiStatus & CY_SPI_UNDERFLOW_ERROR){
errorStatus |= (CY_SPI_TX_UNDERFLOW_BIT);
}
if (spiStatus & CY_SPI_BUS_ERROR){
errorStatus |= (CY_SPI_BUS_ERROR_BIT);
}
callbackFn (errorStatus);
errorStatus = 0;
}
else{
spiStatus |= CY_ERROR_EVENT_FAILED_BIT;
if (device->spiCancelEvent == false){
device->spiThreadId = 0;
CY_DEBUG_PRINT_ERROR ("CY:Error spi interrupt thread was cancelled... Libusb transmission error is %d \n", transfer->status);
callbackFn (spiStatus);
}
break;
}
}
libusb_free_transfer (transfer);
END:
free (inputParameters);
pthread_exit (NULL);
return NULL;
}
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 (NULL, &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 gets the current SPI config
for the particluar interface of the device
*/
CY_RETURN_STATUS CyGetSpiConfig (
CY_HANDLE handle,
CY_SPI_CONFIG *spiConfig
)
{
UINT16 wValue, wIndex, wLength;
UINT16 bmRequestType, bmRequest;
CyUsSpiConfig_t localSpiConfig;
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT32 ioTimeout = CY_USB_SERIAL_TIMEOUT;
UINT8 scbIndex = 0;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle.. Function is %s \n", __func__);
return CY_ERROR_INVALID_HANDLE;
}
if (spiConfig == NULL){
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_SPI) {
CY_DEBUG_PRINT_ERROR ("CY:Error opened device is not spi ..Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
if (device->interfaceNum > 0)
scbIndex = 1;
bmRequestType = CY_VENDOR_REQUEST_DEVICE_TO_HOST;
bmRequest = CY_SPI_GET_CONFIG_CMD;
wValue = (scbIndex << CY_SCB_INDEX_POS);
wIndex = 0;
wLength = CY_SPI_CONFIG_LEN;
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, (unsigned char*)&localSpiConfig, wLength, ioTimeout);
if (rStatus == CY_SPI_CONFIG_LEN){
//CY_DUMP_DATA ((unsigned char*)&localSpiConfig, wLength);
CY_DEBUG_PRINT_INFO ("CY: Read SPI config successfully %d\n", rStatus);
spiConfig->frequency = localSpiConfig.frequency;
spiConfig->dataWidth = localSpiConfig.dataWidth;
spiConfig->protocol = localSpiConfig.mode;
spiConfig->isMsbFirst = localSpiConfig.isMsbFirst;
spiConfig->isMaster = localSpiConfig.isMaster;
spiConfig->isContinuousMode = localSpiConfig.isContinuous;
spiConfig->isSelectPrecede = localSpiConfig.isSelectPrecede;
spiConfig->isCpha = localSpiConfig.cpha;
spiConfig->isCpol = localSpiConfig.cpol;
return CY_SUCCESS;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error ... Function is %s\n", __func__);
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function %s...libusb error is %d !\n", __func__, rStatus);
return CY_ERROR_REQUEST_FAILED;
}
}
/*
* Api used to do read as well as write on spi
*/
CY_RETURN_STATUS CySpiReadWrite (CY_HANDLE handle,
CY_DATA_BUFFER *readBuffer,
CY_DATA_BUFFER *writeBuffer,
UINT32 ioTimeout)
{
struct args threadParameter;
UINT32 ret;
pthread_t readThreadID = (pthread_t)0;
CY_DEVICE *device;
libusb_device_handle *devHandle;
CY_RETURN_STATUS rStatus;
unsigned short spiTransferMode = 0, scbIndex = 0;
UINT16 wValue, wIndex = 0, wLength;
UINT16 bmRequestType, bmRequest;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle.. Function is %s \n", __func__);
return CY_ERROR_INVALID_HANDLE;
}
if (readBuffer == NULL && writeBuffer == NULL){
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_SPI) {
CY_DEBUG_PRINT_ERROR ("CY:Error opened device is not spi .. \n");
return CY_ERROR_REQUEST_FAILED;
}
//Set both the bits and change it accordingly based on parameters parameters
spiTransferMode |= ((CY_SPI_READ_BIT) | (CY_SPI_WRITE_BIT));
if ((readBuffer == NULL || readBuffer->length == 0 || readBuffer->buffer == NULL))
spiTransferMode &= ~(CY_SPI_READ_BIT);
if ((writeBuffer == NULL || writeBuffer->length == 0 || writeBuffer->buffer == NULL))
spiTransferMode &= ~(CY_SPI_WRITE_BIT);
//if none of the bit is set it implies parameters sent is wrong
if (spiTransferMode == 0){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid parameter.. Function is %s \n", __func__);
return CY_ERROR_INVALID_PARAMETER;
}
if (device->interfaceNum > 0)
scbIndex = 1;
//In read only case we take length to be equal to readBuffer length.
//But in write or in write/read case we take length = writeBuffer length.
if (spiTransferMode == 0x1)
wIndex = readBuffer->length;
else
wIndex = writeBuffer->length;
spiTransferMode |= (scbIndex << 15);
bmRequestType = CY_VENDOR_REQUEST_HOST_TO_DEVICE;
bmRequest = CY_SPI_READ_WRITE_CMD;
wValue = (spiTransferMode);
wLength = 0;
if (pthread_mutex_trylock (&device->writeLock) == 0){
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, NULL, wLength, 5000);
if (rStatus){
CY_DEBUG_PRINT_ERROR ("CY:Error Sending spi read write vendor command failed ... Libusb error is %d\n", rStatus);
pthread_mutex_unlock (&device->writeLock);
return CY_ERROR_REQUEST_FAILED;
}
//Read Bit is not set then write Only
if (!(spiTransferMode & CY_SPI_READ_BIT)) {
writeBuffer->transferCount = 0;
if (readBuffer)
readBuffer->transferCount = 0;
rStatus = CySpiWrite (handle, writeBuffer, ioTimeout);
pthread_mutex_unlock (&device->writeLock);
return rStatus;
}
//Write Bit is not set then read only
if (!(spiTransferMode & CY_SPI_WRITE_BIT)) {
// We are starting a thread so that we can collect all the data
// FIX for short length packet issue on SPI.
readBuffer->transferCount = 0;
if (writeBuffer)
writeBuffer->transferCount = 0;
threadParameter.handle = handle;
threadParameter.readBuffer = readBuffer->buffer;
threadParameter.length = readBuffer->length;
threadParameter.ioTimeout = ioTimeout;
ret = pthread_create (&readThreadID, NULL, (void *)spiCollectData, (void *)&threadParameter);
if (ret){
CY_DEBUG_PRINT_ERROR ("CY:Error in creating read thread ... Reading failed \n");
pthread_mutex_unlock (&device->writeLock);
readBuffer->transferCount = 0;
return CY_ERROR_REQUEST_FAILED;
}
pthread_join (readThreadID, NULL);
readBuffer->transferCount = threadParameter.transferCount;
pthread_mutex_unlock (&device->writeLock);
return threadParameter.rStatus;
}
writeBuffer->transferCount = 0;
readBuffer->transferCount = 0;
threadParameter.handle = handle;
threadParameter.readBuffer = readBuffer->buffer;
threadParameter.length = readBuffer->length;
threadParameter.ioTimeout = ioTimeout;
ret = pthread_create (&readThreadID, NULL, (void *)spiCollectData, (void *)&threadParameter);
if (ret){
CY_DEBUG_PRINT_ERROR ("CY:Error in creating read thread ... Reading failed \n");
readBuffer->transferCount = 0;
pthread_mutex_unlock (&device->writeLock);
return CY_ERROR_REQUEST_FAILED;
}
rStatus = CySpiWrite (handle, writeBuffer, ioTimeout);
if (rStatus == CY_SUCCESS) {
pthread_join (readThreadID, NULL);
rStatus = threadParameter.rStatus;
readBuffer->transferCount = threadParameter.transferCount;
}
else {
pthread_join (readThreadID, NULL);
readBuffer->transferCount = threadParameter.transferCount;
}
pthread_mutex_unlock (&device->writeLock);
return rStatus;
}
else{
CY_DEBUG_PRINT_ERROR ("CY:Error API busy in service previous request ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
return rStatus;
}
/* Function to write on to SPI alone*/
CY_RETURN_STATUS CySpiWrite (
CY_HANDLE handle,
CY_DATA_BUFFER *writeBuffer,
UINT32 ioTimeout
)
{
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
int spiStatus = 1;
UINT32 newIoTimeout = ioTimeout, elapsedTime = 0, loopCount = 1;
if (handle == NULL)
return CY_ERROR_INVALID_HANDLE;
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
if (device->deviceType != CY_TYPE_SPI) {
CY_DEBUG_PRINT_ERROR ("CY:Error device type is not spi ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
startSpiTick (true);
rStatus = libusb_bulk_transfer (devHandle, device->outEndpoint, writeBuffer->buffer, writeBuffer->length,
(int*)&(writeBuffer->transferCount), newIoTimeout);
elapsedTime = getSpiLapsedTime(true);
newIoTimeout = ioTimeout - elapsedTime;
//because we have a sleep of 1 msec after every getstatus
if (newIoTimeout)
loopCount = (newIoTimeout);
if (rStatus == LIBUSB_SUCCESS){
CY_DEBUG_PRINT_INFO ("CY: Successfully written SPI data.. %d bytes Read ...\n", writeBuffer->transferCount);
while (loopCount){
usleep (1000);
rStatus = CyGetSpiStatus (handle, &spiStatus);
if (rStatus == CY_SUCCESS){
if (spiStatus == 0){
return CY_SUCCESS;
}
}
else {
//Should never hit this case
CY_DEBUG_PRINT_ERROR ("CY:Error in getting spi status \n");
return CY_ERROR_REQUEST_FAILED;
}
if (ioTimeout)
loopCount--;
}
if (loopCount == 0 && spiStatus > 0){
writeBuffer->length = 0;
CySpiReset (handle);
return CY_ERROR_IO_TIMEOUT;
}
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Error TimeOut ...function is %s\n", __func__);
CySpiReset (handle);
return CY_ERROR_IO_TIMEOUT;
}
else if (rStatus == LIBUSB_ERROR_PIPE){
CY_DEBUG_PRINT_ERROR ("CY:Error Pipe error..function is %s\n", __func__);
CySpiReset (handle);
CyResetPipe (handle, device->outEndpoint);
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:Error Device Disconnected ...function is %s\n", __func__);
return CY_ERROR_DEVICE_NOT_FOUND;
}
else {
CY_DEBUG_PRINT_ERROR ("CY:Error in writing SPI data ...Libusb Error is %d and bytes read is %d!\n", rStatus, writeBuffer->transferCount);
return CY_ERROR_REQUEST_FAILED;
}
return CY_ERROR_REQUEST_FAILED;
}/*
//We adopted for async method here because there are 2 thread polling same fd
// i.e both read and write are polling same fd when one event triggers and other one is
//not completed then another thread will wait for more than 60sec.
CY_RETURN_STATUS CySpiRead (
CY_HANDLE handle,
CY_DATA_BUFFER *readBuffer,
UINT32 ioTimeout
)
{
struct libusb_transfer *readTransfer;
CY_DEVICE *device;
libusb_device_handle *devHandle;
int readCompleted = 0;
struct timeval time;
int r;
if (handle == NULL)
return CY_ERROR_INVALID_HANDLE;
device = (CY_DEVICE *)handle;
devHandle = device->devHandle;
readBuffer->transferCount = 0;
readTransfer = libusb_alloc_transfer(0);
if (readTransfer == NULL){
CY_DEBUG_PRINT_ERROR("CY:Error in allocating transfers \n");
return CY_ERROR_ALLOCATION_FAILED;
}
libusb_fill_bulk_transfer(readTransfer, devHandle, device->inEndpoint, readBuffer->buffer, readBuffer->length,
spi_read_cb, &readCompleted, ioTimeout);
libusb_submit_transfer (readTransfer);
time.tv_sec = (ioTimeout / 1000);
time.tv_usec = ((ioTimeout % 1000) * 1000);//polling timeout.
while (readCompleted == 0){
r = libusb_handle_events_timeout_completed(glContext, &time, &readCompleted);
if (r < 0) {
if (r == LIBUSB_ERROR_INTERRUPTED)
continue;
libusb_cancel_transfer(readTransfer);
while (!readCompleted)
if (libusb_handle_events_completed(glContext, &readCompleted) < 0)
break;
readBuffer->transferCount = readTransfer->actual_length;
libusb_free_transfer(readTransfer);
return r;
}
}
if (readTransfer->status == LIBUSB_TRANSFER_COMPLETED){
readBuffer->transferCount = readTransfer->actual_length;
libusb_free_transfer (readTransfer);
return CY_SUCCESS;
}
else{
if (readTransfer->status == LIBUSB_TRANSFER_TIMED_OUT){
//We should not be hitting this case.. As the time out is infinite!!
CY_DEBUG_PRINT_ERROR ("CY:Timeout error in doing SPI read/write .... %d Libusb errors %d\n",
readTransfer->actual_length,readTransfer->status);
readBuffer->transferCount = readTransfer->actual_length;
CySpiReset (handle);
libusb_free_transfer (readTransfer);
return CY_ERROR_IO_TIMEOUT;
}
if (readTransfer->status == LIBUSB_TRANSFER_OVERFLOW){
//Need to handle this properly!
CY_DEBUG_PRINT_ERROR ("CY:OverFlow error in doing SPI read/write .... Libusb errors %d %d \n",
readTransfer->status, readTransfer->actual_length);
readBuffer->transferCount = readTransfer->actual_length;
CySpiReset (handle);
libusb_free_transfer (readTransfer);
return CY_ERROR_BUFFER_OVERFLOW;
}
if (readTransfer->status != LIBUSB_TRANSFER_COMPLETED){
CY_DEBUG_PRINT_ERROR ("CY:Error in doing SPI read/write .... Libusb errors are %d %d\n",
readTransfer->status, readTransfer->actual_length);
readBuffer->transferCount = readTransfer->actual_length;
CySpiReset (handle);
libusb_free_transfer (readTransfer);
//If timer is not completed then it implies we have timeout error
return CY_ERROR_REQUEST_FAILED;
}
}
return CY_ERROR_REQUEST_FAILED;
}
/*
This API sets SPI config of the device for that
interface
*/
CY_RETURN_STATUS CySetSpiConfig (
CY_HANDLE handle,
CY_SPI_CONFIG *spiConfig
)
{
UINT16 wValue, wIndex, wLength;
UINT8 bmRequestType, bmRequest;
CyUsSpiConfig_t localSpiConfig;
int rStatus;
CY_DEVICE *device;
libusb_device_handle *devHandle;
UINT32 ioTimeout = CY_USB_SERIAL_TIMEOUT;
UINT8 scbIndex = 0;
if (handle == NULL){
CY_DEBUG_PRINT_ERROR ("CY:Error invalid handle.. Function is %s \n", __func__);
return CY_ERROR_INVALID_HANDLE;
}
if (spiConfig == NULL){
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_SPI) {
CY_DEBUG_PRINT_ERROR ("CY:Error device type is not spi ... Function is %s \n", __func__);
return CY_ERROR_REQUEST_FAILED;
}
if (spiConfig->frequency < 1000 || spiConfig->frequency > 3000000){
CY_DEBUG_PRINT_ERROR ("CY:Error frequency trying to set in out of range ... Function is %s\n", __func__);
return CY_ERROR_INVALID_PARAMETER;
}
if (spiConfig->protocol == CY_SPI_TI){
if (!(spiConfig->isCpol == false && spiConfig->isCpha == true && spiConfig->isContinuousMode == false)){
CY_DEBUG_PRINT_ERROR ("CY:Error ... Wrong configuration for SPI TI mode \n");
return CY_ERROR_REQUEST_FAILED;
}
}
if (spiConfig->protocol == CY_SPI_NS){
if (!(spiConfig->isCpol == false && spiConfig->isCpha == false && spiConfig->isSelectPrecede == false)){
CY_DEBUG_PRINT_ERROR ("CY:Error ... Wrong configuration for SPI ti mode \n");
return CY_ERROR_REQUEST_FAILED;
}
}
else{
if (spiConfig->isSelectPrecede != false){
CY_DEBUG_PRINT_ERROR ("CY:Error ... Wrong configuration for SPI motorola mode \n");
return CY_ERROR_REQUEST_FAILED;
}
}
if (device->interfaceNum > 0)
scbIndex = 1;
bmRequestType = CY_VENDOR_REQUEST_HOST_TO_DEVICE;
bmRequest = CY_SPI_SET_CONFIG_CMD;
wValue = (scbIndex << CY_SCB_INDEX_POS);
wIndex = 0;
wLength = CY_SPI_CONFIG_LEN;
//We will not expose all the spi config structure elements to user.
//Fill in rest of the values.
memset (&localSpiConfig, 0, CY_SPI_CONFIG_LEN);
localSpiConfig.frequency = spiConfig->frequency;
localSpiConfig.dataWidth = spiConfig->dataWidth;
localSpiConfig.mode = spiConfig->protocol;
localSpiConfig.isMsbFirst = spiConfig->isMsbFirst;
localSpiConfig.isMaster = spiConfig->isMaster;
localSpiConfig.isContinuous = spiConfig->isContinuousMode;
localSpiConfig.isSelectPrecede = spiConfig->isSelectPrecede;
localSpiConfig.cpha = spiConfig->isCpha;
localSpiConfig.cpol = spiConfig->isCpol;
//CY_DUMP_DATA ((unsigned char*)&localSpiConfig, wLength);
rStatus = libusb_control_transfer (devHandle, bmRequestType, bmRequest,
wValue, wIndex, (unsigned char*)&localSpiConfig, wLength, ioTimeout);
if (rStatus == CY_SPI_CONFIG_LEN){
CY_DEBUG_PRINT_INFO ("CY: Setting SPI config success ...\n");
return CY_SUCCESS;
}
else if (rStatus == LIBUSB_ERROR_TIMEOUT){
CY_DEBUG_PRINT_ERROR ("CY:Time out error ..Function is %s\n", __func__);
return CY_ERROR_IO_TIMEOUT;
}
else {
CY_DEBUG_PRINT_ERROR ("CY: Error in function %s ... !libusb error is %d\n", __func__, rStatus);
return CY_ERROR_REQUEST_FAILED;
}
}
/*
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;
}
}