Question about the "Flash" library, PROGMEM and how to do something.

Projects Programming
8

Krupski:

// buffer is defined already FYI

prog_char menu2[] PROGMEM = {
                "    (3) %s this channel\r\n\r\n"
                "    Option:  "
        };

sprintf(buffer, menu2, P_enabled[v-1] ? "Disable" : "Enable ");

Serial.write(buffer);



Is this right?

Close. Remember that if the format string is in PROGMEM you have to use sprintf_P(). Other than that it looks correct to me (depending on the declarations of buffer, P_enabled[], v, etc).