Does anybody know what is wrong with this piece of code? i can't see to find the issue among the comparable questions.
The code is written in C, and i keep getting this error. I do add -D SET_MIN_TEMP=5 -D Set_MAX_TEMP=30 to the gcc compile line to make sure the ifndefs should be false...
#ifndef CONFIG_H #define CONFIG_H #include <stdio.h> #include <stdlib.h> #include <time.h> #include <stdint.h> #ifndef RUN_AVG_LENGTH #define RUN_AVG_LENGTH 5 #endif #ifndef SET_MIN_TEMP printf("please set SET_MIN_TEMP \n"); #endif #ifndef SET_MAX_TEMP printf("please set SET_MAX_TEMP \n"); #endif typedef uint16_t sensor_id_t; typedef uint16_t room_id_t; typedef double sensor_value_t; typedef time_t sensor_ts_t; // UTC timestamp as returned by time() - notice that the size of time_t is different on 32/64 bit machine typedef struct { sensor_id_t id; sensor_value_t value; sensor_ts_t ts; } sensor_data_t; typedef struct { sensor_id_t sensor_id; room_id_t room_id; double running_avg[5]; sensor_ts_t timestamp; } sensor_node_t; #endif // CONFIG_H 1 Answer
You can not use a function call (printf) outside a function. You should take a look at #error if you want to report errors at compilation...
See here
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