/*
** ===================================================================
** Method : CDC1_SendChar (component FSL_USB_CDC_Device)
** Description :
** Method to send a character to the USB interface. Method is
** non-blocking: If the output buffer is full, it tries to send
** it over USB. If this fails or buffer is still full, the
** character will be lost. If OnError() event is enabled, the
** error event will be called in case of error.
** Parameters :
** NAME - DESCRIPTION
** Chr - Character to send.
** Returns :
** --- - Error code. ERR_OK for success and
** ERR_FAILED otherwise.
** ===================================================================
*/
byte CDC1_SendChar(CDC1_TComData Chr)
{
static uint8_t txBuf[CDC1_DATA_BUFF_SIZE];
if (Tx1_Put(Chr)==ERR_TXFULL) { /* retry once, otherwise throw it away */
if (CDC1_App_Task(txBuf, sizeof(txBuf))!=ERR_OK) { /* call USB handler: if active, then this will empty the buffer */
return ERR_TXFULL;
} else { /* retry, as USB App_Task() should have sent the buffer */
return Tx1_Put(Chr); /* retry. If buffer is still full, we will lose the character */
}
}
return ERR_OK;
}
/*
** ===================================================================
** Method : CDC1_PutBufferChecked (component FSL_USB_CDC_Device)
** Description :
** Puts a data block into the output buffer, but does not send
** it. If there is not enough size available, then ERR_TXFULL
** is returned, otherwise ERR_OK. The application then needs to
** call USB_App_Callback() to actually send the buffer.
** Parameters :
** NAME - DESCRIPTION
** * buf - Pointer to buffer to be sent
** bufsize - Buffer size in bytes
** Returns :
** --- - Error code
** ===================================================================
*/
uint8_t CDC1_PutBufferChecked(uint8_t *buf, size_t bufSize)
{
uint8_t res;
if(bufSize>CDC1_GetFreeInTxBuf()) { /* no room at the Inn... */
res = ERR_TXFULL;
} else {
res = ERR_OK;
while(bufSize>0 && res==ERR_OK) {
res = Tx1_Put(*buf);
bufSize--;
buf++;
}
}
return res;
}
