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Further optimization of command parser

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This commit is contained in:
Scott Lahteine 2015-05-17 05:00:09 -07:00
parent 3a4c3ab76e
commit 1116e13f5a
1 changed files with 84 additions and 89 deletions
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171
Marlin/Marlin_main.cpp
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@ -141,7 +141,7 @@
* M112 - Emergency stop
* M114 - Output current position to serial port
* M115 - Capabilities string
* M117 - display message
* M117 - Display a message on the controller screen
* M119 - Output Endstop status to serial port
* M120 - Enable endstop detection
* M121 - Disable endstop detection
@ -266,7 +266,7 @@ static bool relative_mode = false; //Determines Absolute or Relative Coordinate
static char serial_char;
static int serial_count = 0;
static boolean comment_mode = false;
static char *strchr_pointer; ///< A pointer to find chars in the command string (X, Y, Z, E, etc.)
static char *seen_pointer; ///< A pointer to find chars in the command string (X, Y, Z, E, etc.)
const char* queued_commands_P= NULL; /* pointer to the current line in the active sequence of commands, or NULL when none */
const int sensitive_pins[] = SENSITIVE_PINS; ///< Sensitive pin list for M42
// Inactivity shutdown
@ -786,21 +786,20 @@ void get_command() {
fromsd[cmd_queue_index_w] = false;
#endif
if (strchr(command, 'N') != NULL) {
strchr_pointer = strchr(command, 'N');
gcode_N = (strtol(strchr_pointer + 1, NULL, 10));
char *npos = strchr(command, 'N');
char *apos = strchr(command, '*');
if (npos) {
gcode_N = strtol(npos + 1, NULL, 10);
if (gcode_N != gcode_LastN + 1 && strstr_P(command, PSTR("M110")) == NULL) {
gcode_line_error(PSTR(MSG_ERR_LINE_NO));
return;
}
if (strchr(command, '*') != NULL) {
byte checksum = 0;
byte count = 0;
if (apos) {
byte checksum = 0, count = 0;
while (command[count] != '*') checksum ^= command[count++];
strchr_pointer = strchr(command, '*');
if (strtol(strchr_pointer + 1, NULL, 10) != checksum) {
if (strtol(apos + 1, NULL, 10) != checksum) {
gcode_line_error(PSTR(MSG_ERR_CHECKSUM_MISMATCH));
return;
}
@ -814,27 +813,25 @@ void get_command() {
gcode_LastN = gcode_N;
// if no errors, continue parsing
}
else { // if we don't receive 'N' but still see '*'
if ((strchr(command, '*') != NULL)) {
gcode_line_error(PSTR(MSG_ERR_NO_LINENUMBER_WITH_CHECKSUM), false);
return;
}
else if (apos) { // No '*' without 'N'
gcode_line_error(PSTR(MSG_ERR_NO_LINENUMBER_WITH_CHECKSUM), false);
return;
}
if (strchr(command, 'G') != NULL) {
strchr_pointer = strchr(command, 'G');
switch (strtol(strchr_pointer + 1, NULL, 10)) {
case 0:
case 1:
case 2:
case 3:
if (IsStopped()) {
// Movement commands alert when stopped
if (IsStopped()) {
char *gpos = strchr(command, 'G');
if (gpos) {
int codenum = strtol(gpos + 1, NULL, 10);
switch (codenum) {
case 0:
case 1:
case 2:
case 3:
SERIAL_ERRORLNPGM(MSG_ERR_STOPPED);
LCD_MESSAGEPGM(MSG_STOPPED);
}
break;
default:
break;
break;
}
}
}
@ -917,32 +914,32 @@ void get_command() {
bool code_has_value() {
int i = 1;
char c = strchr_pointer[i];
if (c == '-' || c == '+') c = strchr_pointer[++i];
if (c == '.') c = strchr_pointer[++i];
char c = seen_pointer[i];
if (c == '-' || c == '+') c = seen_pointer[++i];
if (c == '.') c = seen_pointer[++i];
return (c >= '0' && c <= '9');
}
float code_value() {
float ret;
char *e = strchr(strchr_pointer, 'E');
char *e = strchr(seen_pointer, 'E');
if (e) {
*e = 0;
ret = strtod(strchr_pointer+1, NULL);
ret = strtod(seen_pointer+1, NULL);
*e = 'E';
}
else
ret = strtod(strchr_pointer+1, NULL);
ret = strtod(seen_pointer+1, NULL);
return ret;
}
long code_value_long() { return strtol(strchr_pointer + 1, NULL, 10); }
long code_value_long() { return strtol(seen_pointer + 1, NULL, 10); }
int16_t code_value_short() { return (int16_t)strtol(strchr_pointer + 1, NULL, 10); }
int16_t code_value_short() { return (int16_t)strtol(seen_pointer + 1, NULL, 10); }
bool code_seen(char code) {
strchr_pointer = strchr(current_command, code);
return (strchr_pointer != NULL); //Return True if a character was found
seen_pointer = strchr(current_command, code);
return (seen_pointer != NULL); //Return True if a character was found
}
#define DEFINE_PGM_READ_ANY(type, reader) \
@ -1793,6 +1790,13 @@ void gcode_get_destination() {
}
}
void unknown_command_error() {
SERIAL_ECHO_START;
SERIAL_ECHOPGM(MSG_UNKNOWN_COMMAND);
SERIAL_ECHO(current_command);
SERIAL_ECHOPGM("\"\n");
}
/**
* G0, G1: Coordinated movement of X Y Z E axes
*/
@ -2844,7 +2848,7 @@ inline void gcode_G92() {
* M1: // M1 - Conditional stop - Wait for user button press on LCD
*/
inline void gcode_M0_M1() {
char *args = strchr_pointer + 3;
char *args = current_command + 3;
millis_t codenum = 0;
bool hasP = false, hasS = false;
@ -2931,7 +2935,7 @@ inline void gcode_M17() {
* M23: Select a file
*/
inline void gcode_M23() {
card.openFile(strchr_pointer + 4, true);
card.openFile(current_command + 4, true);
}
/**
@ -2968,7 +2972,7 @@ inline void gcode_M17() {
* M28: Start SD Write
*/
inline void gcode_M28() {
card.openFile(strchr_pointer + 4, false);
card.openFile(current_command + 4, false);
}
/**
@ -2985,7 +2989,7 @@ inline void gcode_M17() {
inline void gcode_M30() {
if (card.cardOK) {
card.closefile();
card.removeFile(strchr_pointer + 4);
card.removeFile(current_command + 4);
}
}
@ -3015,7 +3019,7 @@ inline void gcode_M31() {
if (card.sdprinting)
st_synchronize();
char* args = strchr_pointer + 4;
char* args = current_command + 4;
char* namestartpos = strchr(args, '!'); // Find ! to indicate filename string start.
if (!namestartpos)
@ -3023,12 +3027,12 @@ inline void gcode_M31() {
else
namestartpos++; //to skip the '!'
bool call_procedure = code_seen('P') && (strchr_pointer < namestartpos);
bool call_procedure = code_seen('P') && (seen_pointer < namestartpos);
if (card.cardOK) {
card.openFile(namestartpos, true, !call_procedure);
if (code_seen('S') && strchr_pointer < namestartpos) // "S" (must occur _before_ the filename!)
if (code_seen('S') && seen_pointer < namestartpos) // "S" (must occur _before_ the filename!)
card.setIndex(code_value_short());
card.startFileprint();
@ -3041,7 +3045,7 @@ inline void gcode_M31() {
* M928: Start SD Write
*/
inline void gcode_M928() {
card.openLogFile(strchr_pointer + 5);
card.openLogFile(current_command + 5);
}
#endif // SDSUPPORT
@ -3838,16 +3842,12 @@ inline void gcode_M115() {
SERIAL_PROTOCOLPGM(MSG_M115_REPORT);
}
#ifdef ULTIPANEL
/**
* M117: Set LCD Status Message
*/
inline void gcode_M117() {
lcd_setstatus(strchr_pointer + 5);
}
#endif
/**
* M117: Set LCD Status Message
*/
inline void gcode_M117() {
lcd_setstatus(current_command + 5);
}
/**
* M119: Output endstop states to serial output
@ -4135,10 +4135,7 @@ inline void gcode_M206() {
autoretract_enabled = true;
break;
default:
SERIAL_ECHO_START;
SERIAL_ECHOPGM(MSG_UNKNOWN_COMMAND);
SERIAL_ECHO(current_command);
SERIAL_ECHOLNPGM("\"");
unknown_command_error();
return;
}
for (int i=0; i<EXTRUDERS; i++) retracted[i] = false;
@ -5184,17 +5181,21 @@ void process_next_command() {
char *starpos = strchr(current_command, '*'); // * should always be the last parameter
if (starpos) *starpos = '\0';
// Get the command code as a character
// Get the command code, which must be G, M, or T
char command_code = *current_command;
// code_value routines look at strchr_pointer + 1
strchr_pointer = current_command;
bool code_is_good = code_has_value();
if (command_code == 'G' && code_has_value()) {
if (!code_is_good) {
unknown_command_error();
ok_to_send();
return;
}
int codenum = code_value_short();
int codenum = code_value_short();
switch (codenum) {
switch(command_code) {
case 'G': switch (codenum) {
// G0, G1
case 0:
@ -5263,11 +5264,12 @@ void process_next_command() {
case 92: // G92
gcode_G92();
break;
}
}
else if (command_code == 'M' && code_has_value()) {
switch (code_value_short()) {
default: code_is_good = false;
}
break;
case 'M': switch (codenum) {
#ifdef ULTIPANEL
case 0: // M0 - Unconditional stop - Wait for user button press on LCD
case 1: // M1 - Conditional stop - Wait for user button press on LCD
@ -5342,8 +5344,7 @@ void process_next_command() {
case 105: // M105: Read current temperature
gcode_M105();
return;
break;
return; // "ok" already printed
case 109: // M109: Wait for temperature
gcode_M109();
@ -5417,13 +5418,9 @@ void process_next_command() {
case 115: // M115: Report capabilities
gcode_M115();
break;
#ifdef ULTIPANEL
case 117: // M117: Set LCD message text
gcode_M117();
break;
#endif
case 117: // M117: Set LCD message text, if possible
gcode_M117();
break;
case 114: // M114: Report current position
gcode_M114();
break;
@ -5693,19 +5690,17 @@ void process_next_command() {
case 999: // M999: Restart after being Stopped
gcode_M999();
break;
default: code_is_good = false;
}
break;
case 'T':
gcode_T(code_value_short());
break;
}
else if (command_code == 'T' && code_has_value()) {
gcode_T(code_value_short());
}
else {
SERIAL_ECHO_START;
SERIAL_ECHOPGM(MSG_UNKNOWN_COMMAND);
SERIAL_ECHO(current_command);
SERIAL_ECHOLNPGM("\"");
}
if (!code_is_good) unknown_command_error();
ok_to_send();
}