MethodScript Parameters Based on User Setting

This string is using compile-time string concatenation. This whole string is one line for the purposes of C, but divided into multiple lines for readability only. You cannot put function calls in between. Try using snprintf to print to a separate char* buffer.

You would basically have the whole script as your format string, and you would use snprintf to format your string into a separate buffer.

I typed like that,

char str_CA[256];
snprintf(str_CA, sizeof(str_CA), "e\n var p\n var c\n set_pgstat_mode 2\n cell_on\n meas_loop_ca p c %u %u %u\n pck_start\n pck_add c\n pck_end\n endloop\n on_finished:\n cell_off\n \n", EdcChro, tintervalChro, trunChro);

But I still got error. Hielke@PalmSens 

The amount of help I can offer on C(++) coding is limited, but this bit of code seems correct. However, I'm missing context here (the rest of the code). Have you included the cstdio library?

Yes I added it 

What about first converting uint16_t to string then add in method script code? Such as,

Hielke@PalmSens 

char str_EdcChro[10]; // Choose an appropriate buffer size
sprintf(str_EdcChro, "%u", EdcChro);

....

char const * Chrono_Amp = "e\n"
						  "var p\n"
						  "var c\n"
						  "set_pgstat_mode 2\n"
						  "cell_on\n"
						  // A DC potential of 100 mV (EdcChro) is applied. The current is measured every 100 ms (tintervalChro) for
						  // a total of 2 seconds (trunChro). This results in a total of 20 data points at a rate of 10 points per second.
						  "meas_loop_ca p c str_EdcChrom 100m 2\n"
		    			  "pck_start\n"
		                  "pck_add p\n"
		                  "pck_add c\n"
		                  "pck_end\n"
		                  "endloop\n"
		                  "on_finished:\n"
		                  "cell_off\n"
						  "\n";

That will not work, you can only add simple strings (compile time strings).

It seems you are calling snprintf outside of a function. It is not possible to call a function outside the body of another function in C.

Which part of the codes can I move into int main function based on Arduino example? 

I modified the code like that but I got an error which is "Failed to parse package: -5". Hielke@PalmSens 

The code itself is

char const * Chrono_Amp =   "e\n"
						    "var p\n"
							"var c\n"
							"set_pgstat_mode 2\n"
							"cell_on\n";
				...			
							int main(void)
			
                                
                                while(1)
	                		...
							char buffer_CA[256];
                    	    sprintf(buffer_CA, "meas_loop_ca p c %u %u %u\n", EdcChro, tintervalChro, trunChro);

                    	    strcat(Chrono_Amp, buffer_CA);
                    	    strcat(Chrono_Amp,
            	    		"pck_start\n"
            	    		"pck_add p\n"
            	    		"pck_add c\n"
            	    		"pck_end\n"
            	    		"endloop\n"
            	    		"on_finished:\n"
            	    		"cell_off\n"
            	    		"\n");

This probably means the created script is invalid and you are getting an error message from the EmStat Pico. Try printing the created script to find out where the problem might be.

This probably means the created script is invalid and you are getting an error message from the EmStat Pico. Try printing the created script to find out where the problem might be.