delete gcvt(savedWposXYZA[2], 3, floatToString);

[kangz543g]

delete gcvt(savedWposXYZA[2], 3, floatToString); // convert float to string

#include
#include
#include

void sendFromString() {
char strChar;
float savedWposXYZA[4];
waitOkWhenSdMillis = millis() + WAIT_OK_SD_TIMEOUT;

while (*pPrintString != 0 && (!waitOk) && statusPrinting == PRINTING_STRING) {
strChar = *pPrintString++;
if (strChar == '%') {
strChar = pPrintString++;
switch (strChar) {
case 'z':
preferences.putFloat("wposZ", wposXYZA[2]);
break;
case 'X':
toGrbl(G30SavedX);
break;
case 'Y':
toGrbl(G30SavedY);
break;
case 'Z':
savedWposXYZA[2] = preferences.getFloat("wposZ", 0);
{
std::ostringstream ss;
ss << std::fixed << std::setprecision(3) << savedWposXYZA[2];
std::string floatToString = ss.str();
const char charPtr = floatToString.c_str();
toGrbl(charPtr);
}
break;
case 'M':
toGrbl(modalAbsRel);
toGrbl(modalMmInch);
break;
}
} else {
if (strChar != 13 && strChar != ' ') {
toGrbl((char)strChar);
}
if (strChar == '\n') {
waitOk = true;
}
}
}

if (*pPrintString == 0) {
statusPrinting = PRINTING_STOPPED;
fillStringExecuteMsg(lastStringCmd);
updateFullPage = true;
toGrbl((char)0x0A);
}
}

The sketch uses 1884961 bytes (59%) of program storage space. Up to 3145728 bytes.
Global variables use 89908 bytes (27%) of dynamic memory, leaving 237772 bytes of local variables. The maximum is 327680 bytes.

[kangz543g]

#include string
#include sstream
#include iomanip