#ifndef _GAS_SENSOR_H__ #define _GAS_SENSOR_H__ #include "os/os_type.h" typedef struct { float voltage; float lowpass; }gas_t; #define MIN_GAS_VALUE 1000.0F #define MAX_GAS_VALUE 5000.0F void gas_sensor_init(void); float gas_sample_voltage(void); bool gas_detect_speed_signal(void); #endif /* _GAS_SENSOR_H__ */