I am trying to define a #define in Arduino but I have error on line 7, this is the error shown: expected primary-expression before '{' token This is my code: unsigned long timeout_start; unsigned long timeout_ms; #define TIMEOUT_2000MS 2000 #define ERROR_TIMEOUT 1 #define TIMEOUT_START { timeo…

[image] wrsalasr: #define TIMEOUT_CHECK { if (millis() - timeout_start > timeout_ms) return ERROR_TIMEOUT; } while (!Serial.available() && TIMEOUT_CHECK) { delay(1); } You CAN use your existing definition of TIMEOUT_CHECK but you have to use it as a statement. You can't put a statemen…

Error with definition of #define

Projects Programming

jremington November 4, 2021, 7:15pm 5

What do YOU get when YOU expand the macro? Makes no sense to me.

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Error with definition of #define

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