void VerilatedVcd::closePrev () {
if (!isOpen()) return;
bufferFlush();
m_isOpen = false;
::close(m_fd);
}
void SpTraceVcd::closePrev () {
if (!isOpen()) return;
bufferFlush();
m_isOpen = false;
::close(m_fd);
}
static void controlReceived(uint32_t token) {
OpenIBootCmd* cmd = (OpenIBootCmd*)controlRecvBuffer;
OpenIBootCmd* reply = (OpenIBootCmd*)controlSendBuffer;
if(cmd->command == OPENIBOOTCMD_DUMPBUFFER) {
int length;
if(sendFileBytesLeft > 0) {
length = sendFileBytesLeft;
} else {
length = getScrollbackLen(); // getScrollbackLen();// USB_BYTES_AT_A_TIME;
}
reply->command = OPENIBOOTCMD_DUMPBUFFER_LEN;
reply->dataLen = length;
usb_send_interrupt(3, controlSendBuffer, sizeof(OpenIBootCmd));
//uartPrintf("got dumpbuffer cmd, returning length: %d\r\n", length);
} else if(cmd->command == OPENIBOOTCMD_DUMPBUFFER_GOAHEAD) {
left = cmd->dataLen;
//uartPrintf("got dumpbuffer goahead, writing length: %d\r\n", (int)left);
size_t toRead = (left > USB_BYTES_AT_A_TIME) ? USB_BYTES_AT_A_TIME: left;
if(sendFileBytesLeft > 0) {
usb_send_bulk(1, sendFilePtr, toRead);
sendFilePtr += toRead;
sendFileBytesLeft -= toRead;
if(sendFileBytesLeft == 0) {
bufferPrintf("file sent.\r\n");
}
} else {
bufferFlush((char*) dataSendBuffer, toRead);
usb_send_bulk(1, dataSendBuffer, toRead);
}
left -= toRead;
} else if(cmd->command == OPENIBOOTCMD_SENDCOMMAND) {
dataRecvPtr = dataRecvBuffer;
rxLeft = cmd->dataLen;
lastRxLen = rxLeft;
//uartPrintf("got sendcommand, receiving length: %d\r\n", (int)rxLeft);
reply->command = OPENIBOOTCMD_SENDCOMMAND_GOAHEAD;
reply->dataLen = cmd->dataLen;
usb_send_interrupt(3, controlSendBuffer, sizeof(OpenIBootCmd));
size_t toRead = (rxLeft > USB_BYTES_AT_A_TIME) ? USB_BYTES_AT_A_TIME: rxLeft;
usb_receive_bulk(2, dataRecvPtr, toRead);
rxLeft -= toRead;
dataRecvPtr += toRead;
}
usb_receive_interrupt(4, controlRecvBuffer, sizeof(OpenIBootCmd));
}
void CBuffer_Write(CBuffer* cb, int flags, const char* txt)
{
assert(cb);
lock(cb, true);
// Check for special write actions first.
if(flags & CBLF_RULER)
{
bufferFlush(cb);
bufferNewLine(cb)->flags |= CBLF_RULER;
flags &= ~CBLF_RULER;
}
if(!(!txt || !strcmp(txt, "")))
{
size_t i, len = strlen(txt);
// Copy the text into the write buffer and flush to the history
// buffer when as necessary/required.
for(i = 0; i < len; ++i)
{
cb->wbFlags = flags;
if(txt[i] == '\n' || cb->wbc >= cb->maxLineLen) // A new line?
{
bufferFlush(cb);
// Newlines won't get in the buffer at all.
if(txt[i] == '\n')
continue;
}
// Copy the next character to the write buffer.
cb->writebuf[cb->wbc++] = txt[i];
}
if(cb->flags & CBF_ALWAYSFLUSH)
{ // Don't leave data in the write buffer.
bufferFlush(cb);
}
}
lock(cb, false);
}
StreamToFileManager::StreamToFileManager(QObject *parent) :
QObject(parent),
_chunkCounter(0),
_targetFile(NULL),
_isStreamingAborted(false)
{
_bufferedTransmitter = new BufferedTransmitter(1024 * 1024 * 2, this); // 2MB
connect(_bufferedTransmitter, SIGNAL(bufferFlush(QByteArray)), this, SLOT(_bufferTransmitterFlush(QByteArray)));
_backgroundWorkerQueue = new BackgroundWorkerQueue(this);
connect(_backgroundWorkerQueue, SIGNAL(queueEmpty()), this, SLOT(_executorQueueEmtpy()));
}
/*
* Flush the buffer
*
* This will send the current contents up to and including the last space
*/
static void flushPhrase(void){
if(phraseBuffer.datalength){
// Write up to the last space
phrase[phraseBuffer.datalength] = 0;
sayText((char*)phrase);
// Reset buffer to start
bufferFlush(&phraseBuffer);
phraseBuffer.dataindex=0;
}
}
int main()
{
int n;
char buffer[MAXSIZE];
while((n = GETLINE(buffer, MAXSIZE)) > 0)
{
if(remove_space(buffer, n))
bufferFlush(buffer);
}
return 0;
}
static int acm_send()
{
if(acm_file_recv_left > 0)
{
acm_busy = TRUE;
return 1;
}
if(acm_file_send_left > 0)
{
acm_busy = TRUE;
int amt = acm_file_send_left;
if(amt > acm_usb_mps)
amt = acm_usb_mps;
memcpy(acm_send_buffer, acm_file_ptr, amt);
acm_file_ptr += amt;
acm_file_send_left -= amt;
usb_send_bulk(ACM_EP_SEND, acm_send_buffer, amt);
if(acm_file_send_left == 0)
bufferPrintf("ACM: Sent file (finished at 0x%08x)!\n", acm_file_ptr);
return 1;
}
if(getScrollbackLen() > 0)
{
acm_busy = TRUE;
int amt = getScrollbackLen();
if(amt > acm_usb_mps)
amt = acm_usb_mps;
bufferFlush(acm_send_buffer, amt);
usb_send_bulk(ACM_EP_SEND, acm_send_buffer, amt);
return 1;
}
acm_busy = FALSE;
return 0;
}
static void dataSent(uint32_t token) {
//uartPrintf("sending remainder: %d\r\n", (int)left);
if(left > 0) {
size_t toRead = (left > USB_BYTES_AT_A_TIME) ? USB_BYTES_AT_A_TIME: left;
if(sendFileBytesLeft > 0) {
usb_send_bulk(1, sendFilePtr, toRead);
sendFilePtr += toRead;
sendFileBytesLeft -= toRead;
if(sendFileBytesLeft == 0) {
bufferPrintf("file sent.\r\n");
}
} else {
bufferFlush((char*) dataSendBuffer, toRead);
usb_send_bulk(1, dataSendBuffer, toRead);
}
left -= toRead;
}
}
void uartFlushReceiveBuffer(u08 nUart)
{
// flush all data from receive buffer
bufferFlush(&uartRxBuffer[nUart]);
}
void CBuffer_Flush(CBuffer* cb)
{
lock(cb, true);
bufferFlush(cb);
lock(cb, false);
}
// process buffer containing STX/ETX packets
unsigned char stxetxProcess(cBuffer* rxBuffer)
{
unsigned char foundpacket = FALSE;
unsigned short i;
unsigned char length, checksum;
//unsigned char type;
// process the buffer
// go through buffer looking for packets
// the STX must be located at least STXETX_HEADERLENGTH+STXETX_TRAILERLENGTH from end
// otherwise we must not have a complete packet
while( rxBuffer->datalength >= ((uint16_t)STXETX_HEADERLENGTH+(uint16_t)STXETX_TRAILERLENGTH) )
{
// look for a potential start of packet
if(bufferGetAtIndex(rxBuffer, 0) == STX)
{
// if this is a start, then get the length
length = bufferGetAtIndex(rxBuffer, STXETX_LENGTHOFFSET);
// now we must have at least STXETX_HEADERLENGTH+length+STXETX_TRAILERLENGTH in buffer to continue
if(rxBuffer->datalength >= ((uint16_t)STXETX_HEADERLENGTH+length+(uint16_t)STXETX_TRAILERLENGTH))
{
// check to see if ETX is in the right position
if(bufferGetAtIndex(rxBuffer, STXETX_HEADERLENGTH+length+STXETX_TRAILERLENGTH-1) == ETX)
{
// found potential packet
// test checksum
checksum = 0;
// sum data between STX and ETX, not including checksum itself
// (uint16_t) casting needed to avoid unsigned/signed mismatch
for(i = 0; i<((uint16_t)STXETX_HEADERLENGTH+length+(uint16_t)STXETX_TRAILERLENGTH-(uint16_t)STXETX_NOETXSTXCHECKSUM); i++)
{
checksum += bufferGetAtIndex(rxBuffer, i+STXETX_STATUSOFFSET);
}
// compare checksums
if(checksum == bufferGetAtIndex(rxBuffer, STXETX_CHECKSUMOFFSET+length))
{
//we have a packet!
foundpacket = TRUE;
// copy data to buffer
// (don't copy STX, ETX, or CHECKSUM)
for(i = 0; i < ((uint16_t)STXETX_HEADERLENGTH+length-1); i++)
{
stxetxRxPacket[i] = bufferGetAtIndex(rxBuffer, i+1);
}
// debug
//rprintf("STXETX Received packet type: 0x%x\n", bufferGetAtIndex(rxBuffer, STXETX_TYPEOFFSET));
// dump this packet from the
bufferDumpFromFront(rxBuffer, STXETX_HEADERLENGTH+length+STXETX_TRAILERLENGTH);
// done with this processing session
break;
}
else
{
// checksum bad
//rprintf("STXETX Received packet with bad checksum\r\n");
// for now, we dump these
// dump this STX
bufferGetFromFront(rxBuffer);
}
}
else
{
// no ETX or ETX in wrong position
// dump this STX
bufferGetFromFront(rxBuffer);
}
}
else
{
// not enough data in buffer to decode pending packet
// wait until next time
break;
}
}
else
{
// this is not a start, dump it
bufferGetFromFront(rxBuffer);
}
}
// check if receive buffer is full with no packets decoding
// (ie. deadlocked on garbage data or packet that exceeds buffer size)
if(!bufferIsNotFull(rxBuffer))
{
// dump receive buffer contents to relieve deadlock
bufferFlush(rxBuffer);
}
return foundpacket;
}
uint8_t nmeaProcess(cBuffer* rxBuffer)
{
uint8_t foundpacket = NMEA_NODATA;
uint8_t startFlag = FALSE;
//uint8_t data;
uint16_t i,j;
// process the receive buffer
// go through buffer looking for packets
while(rxBuffer->datalength)
{
// look for a start of NMEA packet
if(bufferGetAtIndex(rxBuffer,0) == '$')
{
// found start
startFlag = TRUE;
// when start is found, we leave it intact in the receive buffer
// in case the full NMEA string is not completely received. The
// start will be detected in the next nmeaProcess iteration.
// done looking for start
break;
}
else
bufferGetFromFront(rxBuffer);
}
// if we detected a start, look for end of packet
if(startFlag)
{
for(i=1; i<(rxBuffer->datalength)-1; i++)
{
// check for end of NMEA packet <CR><LF>
if((bufferGetAtIndex(rxBuffer,i) == '\r') && (bufferGetAtIndex(rxBuffer,i+1) == '\n'))
{
// have a packet end
// dump initial '$'
bufferGetFromFront(rxBuffer);
// copy packet to NmeaPacket
for(j=0; j<(i-1); j++)
{
// although NMEA strings should be 80 characters or less,
// receive buffer errors can generate erroneous packets.
// Protect against packet buffer overflow
if(j<(NMEA_BUFFERSIZE-1))
NmeaPacket[j] = bufferGetFromFront(rxBuffer);
else
bufferGetFromFront(rxBuffer);
}
// null terminate it
NmeaPacket[j] = 0;
// dump <CR><LF> from rxBuffer
bufferGetFromFront(rxBuffer);
bufferGetFromFront(rxBuffer);
#ifdef NMEA_DEBUG_PKT
rprintf("Rx NMEA packet type: ");
rprintfStrLen(NmeaPacket, 0, 5);
rprintfStrLen(NmeaPacket, 5, (i-1)-5);
rprintfCRLF();
#endif
// found a packet
// done with this processing session
foundpacket = NMEA_UNKNOWN;
break;
}
}
}
if(foundpacket)
{
// check message type and process appropriately
if(!strncmp(NmeaPacket, "GPGGA", 5))
{
// process packet of this type
nmeaProcessGPGGA(NmeaPacket);
// report packet type
foundpacket = NMEA_GPGGA;
}
else if(!strncmp(NmeaPacket, "GPVTG", 5))
{
// process packet of this type
nmeaProcessGPVTG(NmeaPacket);
// report packet type
foundpacket = NMEA_GPVTG;
}
}
else if(rxBuffer->datalength >= rxBuffer->size)
{
// if we found no packet, and the buffer is full
// we're logjammed, flush entire buffer
bufferFlush(rxBuffer);
}
return foundpacket;
}
void uartClearReceiveBuffer(u08 nUart) {
assert(nUart < 4);
// flush all data from receive buffer
bufferFlush(&uartRxBuffer[nUart]);
}