/*
* _write
* Write to a file.
* file : file identifier (indicate in which channel/peripheral write data)
* ptr : pointer to an array of char (provided by caller) on which take data to write
* len : amount of data to write
*/
int _write(int file, char *ptr, int len)
{
char *loc_ptr=ptr;
while (loc_ptr-ptr < len)
{
USB_CDC_SendData((u8*)loc_ptr, 1);
loc_ptr++;
}
return len;
}
/*******************************************************************************
* Function Name : ReceiverFunc
* Description : Receiver interrupt handler.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
static void ReceiverFunc(void)
{
uint16_t receive_data;
/* Read data from UART */
for (receive_data_length = 0; ((UART_GetFlagStatus(UART, UART_FLAG_RXFE) == RESET) && (receive_data_length < BUFFER_LENGTH)); )
{
receive_data = UART_ReceiveData(UART);
if (UART_Flags(receive_data) == 0)
{
ReceiveBuffer[receive_data_length++] = UART_Data(receive_data);
}
}
/* Initiate data portion sending via USB */
USB_CDC_SendData(ReceiveBuffer, receive_data_length);
}
/* USB_CDC_HANDLE_DATA_SENT implementation - sending of pending data */
USB_Result USB_CDC_DataSent(void)
{
USB_Result result = USB_SUCCESS;
if (PendingDataLength)
{
result = USB_CDC_SendData(Buffer, PendingDataLength);
#ifdef USB_DEBUG_PROTO
if (result == USB_SUCCESS)
{
SentByteCount += PendingDataLength;
}
else
{
SkippedByteCount += PendingDataLength;
}
#endif /* USB_DEBUG_PROTO */
PendingDataLength = 0;
USB_CDC_ReceiveStart();
}
return USB_SUCCESS;
}
/* USB_CDC_HANDLE_DATA_RECEIVE implementation - data echoing */
USB_Result USB_CDC_RecieveData(uint8_t* Buffer, uint32_t Length)
{
USB_Result result;
#ifdef USB_DEBUG_PROTO
ReceivedByteCount += Length;
#endif /* USB_DEBUG_PROTO */
/* Send back received data portion */
result = USB_CDC_SendData(Buffer, Length);
#ifdef USB_DEBUG_PROTO
if (result == USB_SUCCESS)
{
SentByteCount += Length;
}
#ifndef USB_VCOM_SYNC
else
{
SkippedByteCount += Length;
}
#endif /* !USB_VCOM_SYNC */
#endif /* USB_DEBUG_PROTO */
#ifdef USB_VCOM_SYNC
if (result != USB_SUCCESS)
{
/* If data cannot be sent now, it will await nearest possibility
* (see USB_CDC_DataSent) */
PendingDataLength = Length;
}
return result;
#else
return USB_SUCCESS;
#endif /* USB_VCOM_SYNC */
}