Despite 5 years of development with ESP8266 (mini D1) I'l still confused: My IDE version is 1.8.19 My sketch is 3300 lines but I made a test case: This is the sketch:
// Globals
int i=1;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
delay(1000);
Serial.println();
Serial.println("Small test...");
Serial.println("Case 1");
}
void test() {
char* essai = "Hello my wolrd"; // (1) This does not ré-assign essai to the value each time !
// static char essai[50] = {0}; // (2) This works static or not !!!!!!
// char* essai = "Hello my wolrd"; // (3) This does not work as expected
// strcpy(essai, "Hello my wolrd");// (4)
Serial.printf("essai 1='%s'\n",essai);
strcpy(essai,"Hello your wolrd"); // your world
Serial.printf("essai 2='%s'\n",essai);
}
void loop() {
// put your main code here, to run repeatedly:
if (i < 4) { // i.e. 3 times
Serial.printf("Test %d...\n",i);
test();
}
if (i == 4) {
Serial.println("Done test");
}
i++;
delay(1000);
}
I expected the resuls would print three times 2 different lines but see: the results:
Small test...
Case 1 active line: 1
Test 1...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello your wolrd'
essai 2='d'
Test 3...
essai 1='d'
essai 2='d'
Done test
Small test...
Case 2 active lines: 1,4
Test 1...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello your wolrd'
essai 2='d'
Test 3...
essai 1='d'
essai 2='d'
Done test
Small test...
Case 3 active line: 2
Test 1...
essai 1=''
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello your wolrd'
essai 2='Hello your wolrd'
Test 3...
essai 1='Hello your wolrd'
essai 2='Hello your wolrd'
Done test
Small test...
Case 4 active lines: 2,4 ==> result as expected
Test 1...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 3...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Done test
Small test...
Case 5 active line: 3
Test 1...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello your wolrd'
essai 2='d'
Test 3...
essai 1='d'
essai 2='d'
Done test
Small test...
Case 6 active lines: 3,4
Test 1...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello your wolrd'
essai 2='d'
Test 3...
essai 1='d'
essai 2='d'
Done test
Small test...
Case 7 active lines: 2 (line 2 not anymore static) result as expected
Test 1...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 2...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Test 3...
essai 1='Hello my wolrd'
essai 2='Hello your wolrd'
Done test
Is that normal that
char* essai="Hello my world";
does not work as expected (by me!)? (Sorry for mispelling World).
