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|
#include "cmdqueue.h"
#include "cardreader.h"
#include "ultralcd.h"
extern bool Stopped;
// Reserve BUFSIZE lines of length MAX_CMD_SIZE plus CMDBUFFER_RESERVE_FRONT.
char cmdbuffer[BUFSIZE * (MAX_CMD_SIZE + 1) + CMDBUFFER_RESERVE_FRONT];
// Head of the circular buffer, where to read.
int bufindr = 0;
// Tail of the buffer, where to write.
int bufindw = 0;
// Number of lines in cmdbuffer.
int buflen = 0;
// Flag for processing the current command inside the main Arduino loop().
// If a new command was pushed to the front of a command buffer while
// processing another command, this replaces the command on the top.
// Therefore don't remove the command from the queue in the loop() function.
bool cmdbuffer_front_already_processed = false;
int serial_count = 0; //index of character read from serial line
boolean comment_mode = false;
char *strchr_pointer; // just a pointer to find chars in the command string like X, Y, Z, E, etc
unsigned long TimeSent = millis();
unsigned long TimeNow = millis();
long gcode_N = 0;
long gcode_LastN = 0;
long Stopped_gcode_LastN = 0;
uint32_t sdpos_atomic = 0;
// Pop the currently processed command from the queue.
// It is expected, that there is at least one command in the queue.
bool cmdqueue_pop_front()
{
if (buflen > 0) {
#ifdef CMDBUFFER_DEBUG
SERIAL_ECHOPGM("Dequeing ");
SERIAL_ECHO(cmdbuffer+bufindr+CMDHDRSIZE);
SERIAL_ECHOLNPGM("");
SERIAL_ECHOPGM("Old indices: buflen ");
SERIAL_ECHO(buflen);
SERIAL_ECHOPGM(", bufindr ");
SERIAL_ECHO(bufindr);
SERIAL_ECHOPGM(", bufindw ");
SERIAL_ECHO(bufindw);
SERIAL_ECHOPGM(", serial_count ");
SERIAL_ECHO(serial_count);
SERIAL_ECHOPGM(", bufsize ");
SERIAL_ECHO(sizeof(cmdbuffer));
SERIAL_ECHOLNPGM("");
#endif /* CMDBUFFER_DEBUG */
if (-- buflen == 0) {
// Empty buffer.
if (serial_count == 0)
// No serial communication is pending. Reset both pointers to zero.
bufindw = 0;
bufindr = bufindw;
} else {
// There is at least one ready line in the buffer.
// First skip the current command ID and iterate up to the end of the string.
for (bufindr += CMDHDRSIZE; cmdbuffer[bufindr] != 0; ++ bufindr) ;
// Second, skip the end of string null character and iterate until a nonzero command ID is found.
for (++ bufindr; bufindr < sizeof(cmdbuffer) && cmdbuffer[bufindr] == 0; ++ bufindr) ;
// If the end of the buffer was empty,
if (bufindr == sizeof(cmdbuffer)) {
// skip to the start and find the nonzero command.
for (bufindr = 0; cmdbuffer[bufindr] == 0; ++ bufindr) ;
}
#ifdef CMDBUFFER_DEBUG
SERIAL_ECHOPGM("New indices: buflen ");
SERIAL_ECHO(buflen);
SERIAL_ECHOPGM(", bufindr ");
SERIAL_ECHO(bufindr);
SERIAL_ECHOPGM(", bufindw ");
SERIAL_ECHO(bufindw);
SERIAL_ECHOPGM(", serial_count ");
SERIAL_ECHO(serial_count);
SERIAL_ECHOPGM(" new command on the top: ");
SERIAL_ECHO(cmdbuffer+bufindr+CMDHDRSIZE);
SERIAL_ECHOLNPGM("");
#endif /* CMDBUFFER_DEBUG */
}
return true;
}
return false;
}
void cmdqueue_reset()
{
bufindr = 0;
bufindw = 0;
buflen = 0;
cmdbuffer_front_already_processed = false;
}
// How long a string could be pushed to the front of the command queue?
// If yes, adjust bufindr to the new position, where the new command could be enqued.
// len_asked does not contain the zero terminator size.
bool cmdqueue_could_enqueue_front(int len_asked)
{
// MAX_CMD_SIZE has to accommodate the zero terminator.
if (len_asked >= MAX_CMD_SIZE)
return false;
// Remove the currently processed command from the queue.
if (! cmdbuffer_front_already_processed) {
cmdqueue_pop_front();
cmdbuffer_front_already_processed = true;
}
if (bufindr == bufindw && buflen > 0)
// Full buffer.
return false;
// Adjust the end of the write buffer based on whether a partial line is in the receive buffer.
int endw = (serial_count > 0) ? (bufindw + MAX_CMD_SIZE + 1) : bufindw;
if (bufindw < bufindr) {
int bufindr_new = bufindr - len_asked - (1 + CMDHDRSIZE);
// Simple case. There is a contiguous space between the write buffer and the read buffer.
if (endw <= bufindr_new) {
bufindr = bufindr_new;
return true;
}
} else {
// Otherwise the free space is split between the start and end.
if (len_asked + (1 + CMDHDRSIZE) <= bufindr) {
// Could fit at the start.
bufindr -= len_asked + (1 + CMDHDRSIZE);
return true;
}
int bufindr_new = sizeof(cmdbuffer) - len_asked - (1 + CMDHDRSIZE);
if (endw <= bufindr_new) {
memset(cmdbuffer, 0, bufindr);
bufindr = bufindr_new;
return true;
}
}
return false;
}
// Could one enqueue a command of length len_asked into the buffer,
// while leaving CMDBUFFER_RESERVE_FRONT at the start?
// If yes, adjust bufindw to the new position, where the new command could be enqued.
// len_asked does not contain the zero terminator size.
// This function may update bufindw, therefore for the power panic to work, this function must be called
// with the interrupts disabled!
bool cmdqueue_could_enqueue_back(int len_asked, bool atomic_update)
{
// MAX_CMD_SIZE has to accommodate the zero terminator.
if (len_asked >= MAX_CMD_SIZE)
return false;
if (bufindr == bufindw && buflen > 0)
// Full buffer.
return false;
if (serial_count > 0) {
// If there is some data stored starting at bufindw, len_asked is certainly smaller than
// the allocated data buffer. Try to reserve a new buffer and to move the already received
// serial data.
// How much memory to reserve for the commands pushed to the front?
// End of the queue, when pushing to the end.
int endw = bufindw + len_asked + (1 + CMDHDRSIZE);
if (bufindw < bufindr)
// Simple case. There is a contiguous space between the write buffer and the read buffer.
return endw + CMDBUFFER_RESERVE_FRONT <= bufindr;
// Otherwise the free space is split between the start and end.
if (// Could one fit to the end, including the reserve?
endw + CMDBUFFER_RESERVE_FRONT <= sizeof(cmdbuffer) ||
// Could one fit to the end, and the reserve to the start?
(endw <= sizeof(cmdbuffer) && CMDBUFFER_RESERVE_FRONT <= bufindr))
return true;
// Could one fit both to the start?
if (len_asked + (1 + CMDHDRSIZE) + CMDBUFFER_RESERVE_FRONT <= bufindr) {
// Mark the rest of the buffer as used.
memset(cmdbuffer+bufindw, 0, sizeof(cmdbuffer)-bufindw);
// and point to the start.
// Be careful! The bufindw needs to be changed atomically for the power panic & filament panic to work.
if (atomic_update)
cli();
bufindw = 0;
if (atomic_update)
sei();
return true;
}
} else {
// How much memory to reserve for the commands pushed to the front?
// End of the queue, when pushing to the end.
int endw = bufindw + len_asked + (1 + CMDHDRSIZE);
if (bufindw < bufindr)
// Simple case. There is a contiguous space between the write buffer and the read buffer.
return endw + CMDBUFFER_RESERVE_FRONT <= bufindr;
// Otherwise the free space is split between the start and end.
if (// Could one fit to the end, including the reserve?
endw + CMDBUFFER_RESERVE_FRONT <= sizeof(cmdbuffer) ||
// Could one fit to the end, and the reserve to the start?
(endw <= sizeof(cmdbuffer) && CMDBUFFER_RESERVE_FRONT <= bufindr))
return true;
// Could one fit both to the start?
if (len_asked + (1 + CMDHDRSIZE) + CMDBUFFER_RESERVE_FRONT <= bufindr) {
// Mark the rest of the buffer as used.
memset(cmdbuffer+bufindw, 0, sizeof(cmdbuffer)-bufindw);
// and point to the start.
// Be careful! The bufindw needs to be changed atomically for the power panic & filament panic to work.
if (atomic_update)
cli();
bufindw = 0;
if (atomic_update)
sei();
return true;
}
}
return false;
}
#ifdef CMDBUFFER_DEBUG
void cmdqueue_dump_to_serial_single_line(int nr, const char *p)
{
SERIAL_ECHOPGM("Entry nr: ");
SERIAL_ECHO(nr);
SERIAL_ECHOPGM(", type: ");
SERIAL_ECHO(int(*p));
SERIAL_ECHOPGM(", cmd: ");
SERIAL_ECHO(p+1);
SERIAL_ECHOLNPGM("");
}
void cmdqueue_dump_to_serial()
{
if (buflen == 0) {
SERIAL_ECHOLNPGM("The command buffer is empty.");
} else {
SERIAL_ECHOPGM("Content of the buffer: entries ");
SERIAL_ECHO(buflen);
SERIAL_ECHOPGM(", indr ");
SERIAL_ECHO(bufindr);
SERIAL_ECHOPGM(", indw ");
SERIAL_ECHO(bufindw);
SERIAL_ECHOLNPGM("");
int nr = 0;
if (bufindr < bufindw) {
for (const char *p = cmdbuffer + bufindr; p < cmdbuffer + bufindw; ++ nr) {
cmdqueue_dump_to_serial_single_line(nr, p);
// Skip the command.
for (++p; *p != 0; ++ p);
// Skip the gaps.
for (++p; p < cmdbuffer + bufindw && *p == 0; ++ p);
}
} else {
for (const char *p = cmdbuffer + bufindr; p < cmdbuffer + sizeof(cmdbuffer); ++ nr) {
cmdqueue_dump_to_serial_single_line(nr, p);
// Skip the command.
for (++p; *p != 0; ++ p);
// Skip the gaps.
for (++p; p < cmdbuffer + sizeof(cmdbuffer) && *p == 0; ++ p);
}
for (const char *p = cmdbuffer; p < cmdbuffer + bufindw; ++ nr) {
cmdqueue_dump_to_serial_single_line(nr, p);
// Skip the command.
for (++p; *p != 0; ++ p);
// Skip the gaps.
for (++p; p < cmdbuffer + bufindw && *p == 0; ++ p);
}
}
SERIAL_ECHOLNPGM("End of the buffer.");
}
}
#endif /* CMDBUFFER_DEBUG */
//adds an command to the main command buffer
//thats really done in a non-safe way.
//needs overworking someday
// Currently the maximum length of a command piped through this function is around 20 characters
void enquecommand(const char *cmd, bool from_progmem)
{
int len = from_progmem ? strlen_P(cmd) : strlen(cmd);
// Does cmd fit the queue while leaving sufficient space at the front for the chained commands?
// If it fits, it may move bufindw, so it points to a contiguous buffer, which fits cmd.
if (cmdqueue_could_enqueue_back(len)) {
// This is dangerous if a mixing of serial and this happens
// This may easily be tested: If serial_count > 0, we have a problem.
cmdbuffer[bufindw] = CMDBUFFER_CURRENT_TYPE_UI;
if (from_progmem)
strcpy_P(cmdbuffer + bufindw + CMDHDRSIZE, cmd);
else
strcpy(cmdbuffer + bufindw + CMDHDRSIZE, cmd);
SERIAL_ECHO_START;
SERIAL_ECHORPGM(MSG_Enqueing);
SERIAL_ECHO(cmdbuffer + bufindw + CMDHDRSIZE);
SERIAL_ECHOLNPGM("\"");
bufindw += len + (CMDHDRSIZE + 1);
if (bufindw == sizeof(cmdbuffer))
bufindw = 0;
++ buflen;
#ifdef CMDBUFFER_DEBUG
cmdqueue_dump_to_serial();
#endif /* CMDBUFFER_DEBUG */
} else {
SERIAL_ERROR_START;
SERIAL_ECHORPGM(MSG_Enqueing);
if (from_progmem)
SERIAL_PROTOCOLRPGM(cmd);
else
SERIAL_ECHO(cmd);
SERIAL_ECHOLNPGM("\" failed: Buffer full!");
#ifdef CMDBUFFER_DEBUG
cmdqueue_dump_to_serial();
#endif /* CMDBUFFER_DEBUG */
}
}
bool cmd_buffer_empty()
{
return (buflen == 0);
}
void enquecommand_front(const char *cmd, bool from_progmem)
{
int len = from_progmem ? strlen_P(cmd) : strlen(cmd);
// Does cmd fit the queue? This call shall move bufindr, so the command may be copied.
if (cmdqueue_could_enqueue_front(len)) {
cmdbuffer[bufindr] = CMDBUFFER_CURRENT_TYPE_UI;
if (from_progmem)
strcpy_P(cmdbuffer + bufindr + CMDHDRSIZE, cmd);
else
strcpy(cmdbuffer + bufindr + CMDHDRSIZE, cmd);
++ buflen;
SERIAL_ECHO_START;
SERIAL_ECHOPGM("Enqueing to the front: \"");
SERIAL_ECHO(cmdbuffer + bufindr + CMDHDRSIZE);
SERIAL_ECHOLNPGM("\"");
#ifdef CMDBUFFER_DEBUG
cmdqueue_dump_to_serial();
#endif /* CMDBUFFER_DEBUG */
} else {
SERIAL_ERROR_START;
SERIAL_ECHOPGM("Enqueing to the front: \"");
if (from_progmem)
SERIAL_PROTOCOLRPGM(cmd);
else
SERIAL_ECHO(cmd);
SERIAL_ECHOLNPGM("\" failed: Buffer full!");
#ifdef CMDBUFFER_DEBUG
cmdqueue_dump_to_serial();
#endif /* CMDBUFFER_DEBUG */
}
}
// Mark the command at the top of the command queue as new.
// Therefore it will not be removed from the queue.
void repeatcommand_front()
{
cmdbuffer_front_already_processed = true;
}
bool is_buffer_empty()
{
if (buflen == 0) return true;
else return false;
}
void get_command()
{
// Test and reserve space for the new command string.
if (! cmdqueue_could_enqueue_back(MAX_CMD_SIZE - 1, true))
return;
bool rx_buffer_full = false; //flag that serial rx buffer is full
while (MYSERIAL.available() > 0) {
if (MYSERIAL.available() == RX_BUFFER_SIZE - 1) { //compare number of chars buffered in rx buffer with rx buffer size
SERIAL_ECHOLNPGM("Full RX Buffer"); //if buffer was full, there is danger that reading of last gcode will not be completed
rx_buffer_full = true; //sets flag that buffer was full
}
char serial_char = MYSERIAL.read();
/* if (selectedSerialPort == 1)
{
selectedSerialPort = 0;
MYSERIAL.write(serial_char); // for debuging serial line 2 in farm_mode
selectedSerialPort = 1;
} */ //RP - removed
TimeSent = millis();
TimeNow = millis();
if (serial_char < 0)
// Ignore extended ASCII characters. These characters have no meaning in the G-code apart from the file names
// and Marlin does not support such file names anyway.
// Serial characters with a highest bit set to 1 are generated when the USB cable is unplugged, leading
// to a hang-up of the print process from an SD card.
continue;
if(serial_char == '\n' ||
serial_char == '\r' ||
serial_count >= (MAX_CMD_SIZE - 1) )
{
if(!serial_count) { //if empty line
comment_mode = false; //for new command
return;
}
cmdbuffer[bufindw+serial_count+CMDHDRSIZE] = 0; //terminate string
if(!comment_mode){
// Line numbers must be first in buffer
if ((strstr(cmdbuffer+bufindw+CMDHDRSIZE, "PRUSA") == NULL) &&
(cmdbuffer[bufindw+CMDHDRSIZE] == 'N')) {
// Line number met. When sending a G-code over a serial line, each line may be stamped with its index,
// and Marlin tests, whether the successive lines are stamped with an increasing line number ID
gcode_N = (strtol(cmdbuffer+bufindw+CMDHDRSIZE+1, NULL, 10));
if(gcode_N != gcode_LastN+1 && (strstr_P(cmdbuffer+bufindw+CMDHDRSIZE, PSTR("M110")) == NULL) ) {
// M110 - set current line number.
// Line numbers not sent in succession.
SERIAL_ERROR_START;
SERIAL_ERRORRPGM(MSG_ERR_LINE_NO);
SERIAL_ERRORLN(gcode_LastN);
//Serial.println(gcode_N);
FlushSerialRequestResend();
serial_count = 0;
return;
}
if((strchr_pointer = strchr(cmdbuffer+bufindw+CMDHDRSIZE, '*')) != NULL)
{
byte checksum = 0;
char *p = cmdbuffer+bufindw+CMDHDRSIZE;
while (p != strchr_pointer)
checksum = checksum^(*p++);
if (int(strtol(strchr_pointer+1, NULL, 10)) != int(checksum)) {
SERIAL_ERROR_START;
SERIAL_ERRORRPGM(MSG_ERR_CHECKSUM_MISMATCH);
SERIAL_ERRORLN(gcode_LastN);
FlushSerialRequestResend();
serial_count = 0;
return;
}
// If no errors, remove the checksum and continue parsing.
*strchr_pointer = 0;
}
else
{
SERIAL_ERROR_START;
SERIAL_ERRORRPGM(MSG_ERR_NO_CHECKSUM);
SERIAL_ERRORLN(gcode_LastN);
FlushSerialRequestResend();
serial_count = 0;
return;
}
// Don't parse N again with code_seen('N')
cmdbuffer[bufindw + CMDHDRSIZE] = '$';
//if no errors, continue parsing
gcode_LastN = gcode_N;
}
// if we don't receive 'N' but still see '*'
if ((cmdbuffer[bufindw + CMDHDRSIZE] != 'N') && (cmdbuffer[bufindw + CMDHDRSIZE] != '$') && (strchr(cmdbuffer+bufindw+CMDHDRSIZE, '*') != NULL))
{
SERIAL_ERROR_START;
SERIAL_ERRORRPGM(MSG_ERR_NO_LINENUMBER_WITH_CHECKSUM);
SERIAL_ERRORLN(gcode_LastN);
serial_count = 0;
return;
}
if ((strchr_pointer = strchr(cmdbuffer+bufindw+CMDHDRSIZE, 'G')) != NULL) {
if (! IS_SD_PRINTING) {
usb_printing_counter = 10;
is_usb_printing = true;
}
if (Stopped == true) {
int gcode = strtol(strchr_pointer+1, NULL, 10);
if (gcode >= 0 && gcode <= 3) {
SERIAL_ERRORLNRPGM(MSG_ERR_STOPPED);
LCD_MESSAGERPGM(MSG_STOPPED);
}
}
} // end of 'G' command
//If command was e-stop process now
if(strcmp(cmdbuffer+bufindw+CMDHDRSIZE, "M112") == 0)
kill("", 2);
// Store the current line into buffer, move to the next line.
cmdbuffer[bufindw] = CMDBUFFER_CURRENT_TYPE_USB;
#ifdef CMDBUFFER_DEBUG
SERIAL_ECHO_START;
SERIAL_ECHOPGM("Storing a command line to buffer: ");
SERIAL_ECHO(cmdbuffer+bufindw+CMDHDRSIZE);
SERIAL_ECHOLNPGM("");
#endif /* CMDBUFFER_DEBUG */
bufindw += strlen(cmdbuffer+bufindw+CMDHDRSIZE) + (1 + CMDHDRSIZE);
if (bufindw == sizeof(cmdbuffer))
bufindw = 0;
++ buflen;
#ifdef CMDBUFFER_DEBUG
SERIAL_ECHOPGM("Number of commands in the buffer: ");
SERIAL_ECHO(buflen);
SERIAL_ECHOLNPGM("");
#endif /* CMDBUFFER_DEBUG */
} // end of 'not comment mode'
serial_count = 0; //clear buffer
// Don't call cmdqueue_could_enqueue_back if there are no characters waiting
// in the queue, as this function will reserve the memory.
if (MYSERIAL.available() == 0 || ! cmdqueue_could_enqueue_back(MAX_CMD_SIZE-1, true))
return;
} // end of "end of line" processing
else {
// Not an "end of line" symbol. Store the new character into a buffer.
if(serial_char == ';') comment_mode = true;
if(!comment_mode) cmdbuffer[bufindw+CMDHDRSIZE+serial_count++] = serial_char;
}
} // end of serial line processing loop
if(farm_mode){
TimeNow = millis();
if ( ((TimeNow - TimeSent) > 800) && (serial_count > 0) ) {
cmdbuffer[bufindw+serial_count+CMDHDRSIZE] = 0;
bufindw += strlen(cmdbuffer+bufindw+CMDHDRSIZE) + (1 + CMDHDRSIZE);
if (bufindw == sizeof(cmdbuffer))
bufindw = 0;
++ buflen;
serial_count = 0;
SERIAL_ECHOPGM("TIMEOUT:");
//memset(cmdbuffer, 0 , sizeof(cmdbuffer));
return;
}
}
//add comment
if (rx_buffer_full == true && serial_count > 0) { //if rx buffer was full and string was not properly terminated
rx_buffer_full = false;
bufindw = bufindw - serial_count; //adjust tail of the buffer to prepare buffer for writing new command
serial_count = 0;
}
#ifdef SDSUPPORT
if(!card.sdprinting || serial_count!=0){
// If there is a half filled buffer from serial line, wait until return before
// continuing with the serial line.
return;
}
//'#' stops reading from SD to the buffer prematurely, so procedural macro calls are possible
// if it occurs, stop_buffering is triggered and the buffer is ran dry.
// this character _can_ occur in serial com, due to checksums. however, no checksums are used in SD printing
static bool stop_buffering=false;
if(buflen==0) stop_buffering=false;
union {
struct {
char lo;
char hi;
} lohi;
uint16_t value;
} sd_count;
sd_count.value = 0;
// Reads whole lines from the SD card. Never leaves a half-filled line in the cmdbuffer.
while( !card.eof() && !stop_buffering) {
int16_t n=card.get();
char serial_char = (char)n;
if(serial_char == '\n' ||
serial_char == '\r' ||
((serial_char == '#' || serial_char == ':') && comment_mode == false) ||
serial_count >= (MAX_CMD_SIZE - 1) || n==-1)
{
if(card.eof()){
SERIAL_PROTOCOLLNRPGM(MSG_FILE_PRINTED);
stoptime=millis();
char time[30];
unsigned long t=(stoptime-starttime-pause_time)/1000;
pause_time = 0;
int hours, minutes;
minutes=(t/60)%60;
hours=t/60/60;
save_statistics(total_filament_used, t);
sprintf_P(time, PSTR("%i hours %i minutes"),hours, minutes);
SERIAL_ECHO_START;
SERIAL_ECHOLN(time);
lcd_setstatus(time);
card.printingHasFinished();
card.checkautostart(true);
if (farm_mode)
{
prusa_statistics(6);
lcd_commands_type = LCD_COMMAND_FARM_MODE_CONFIRM;
}
}
if(serial_char=='#')
stop_buffering=true;
if(!serial_count)
{
// This is either an empty line, or a line with just a comment.
// Continue to the following line, and continue accumulating the number of bytes
// read from the sdcard into sd_count,
// so that the lenght of the already read empty lines and comments will be added
// to the following non-empty line.
comment_mode = false;
continue; //if empty line
}
// The new command buffer could be updated non-atomically, because it is not yet considered
// to be inside the active queue.
sd_count.value = (card.get_sdpos()+1) - sdpos_atomic;
cmdbuffer[bufindw] = CMDBUFFER_CURRENT_TYPE_SDCARD;
cmdbuffer[bufindw+1] = sd_count.lohi.lo;
cmdbuffer[bufindw+2] = sd_count.lohi.hi;
cmdbuffer[bufindw+serial_count+CMDHDRSIZE] = 0; //terminate string
// Calculate the length before disabling the interrupts.
uint8_t len = strlen(cmdbuffer+bufindw+CMDHDRSIZE) + (1 + CMDHDRSIZE);
// SERIAL_ECHOPGM("SD cmd(");
// MYSERIAL.print(sd_count.value, DEC);
// SERIAL_ECHOPGM(") ");
// SERIAL_ECHOLN(cmdbuffer+bufindw+CMDHDRSIZE);
// SERIAL_ECHOPGM("cmdbuffer:");
// MYSERIAL.print(cmdbuffer);
// SERIAL_ECHOPGM("buflen:");
// MYSERIAL.print(buflen+1);
sd_count.value = 0;
cli();
++ buflen;
bufindw += len;
sdpos_atomic = card.get_sdpos()+1;
if (bufindw == sizeof(cmdbuffer))
bufindw = 0;
sei();
comment_mode = false; //for new command
serial_count = 0; //clear buffer
// The following line will reserve buffer space if available.
if (! cmdqueue_could_enqueue_back(MAX_CMD_SIZE-1, true))
return;
}
else
{
if(serial_char == ';') comment_mode = true;
else if(!comment_mode) cmdbuffer[bufindw+CMDHDRSIZE+serial_count++] = serial_char;
}
}
#endif //SDSUPPORT
}
uint16_t cmdqueue_calc_sd_length()
{
if (buflen == 0)
return 0;
union {
struct {
char lo;
char hi;
} lohi;
uint16_t value;
} sdlen_single;
uint16_t sdlen = 0;
for (int _buflen = buflen, _bufindr = bufindr;;) {
if (cmdbuffer[_bufindr] == CMDBUFFER_CURRENT_TYPE_SDCARD) {
sdlen_single.lohi.lo = cmdbuffer[_bufindr + 1];
sdlen_single.lohi.hi = cmdbuffer[_bufindr + 2];
sdlen += sdlen_single.value;
}
if (-- _buflen == 0)
break;
// First skip the current command ID and iterate up to the end of the string.
for (_bufindr += CMDHDRSIZE; cmdbuffer[_bufindr] != 0; ++ _bufindr) ;
// Second, skip the end of string null character and iterate until a nonzero command ID is found.
for (++ _bufindr; _bufindr < sizeof(cmdbuffer) && cmdbuffer[_bufindr] == 0; ++ _bufindr) ;
// If the end of the buffer was empty,
if (_bufindr == sizeof(cmdbuffer)) {
// skip to the start and find the nonzero command.
for (_bufindr = 0; cmdbuffer[_bufindr] == 0; ++ _bufindr) ;
}
}
return sdlen;
}
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