#define PCNT_H_LIM_VAL      10
#define PCNT_L_LIM_VAL     -10
#define PCNT_THRESH1_VAL    5
#define PCNT_THRESH0_VAL   -5
#define PCNT_INPUT_SIG_IO   4  // Pulse Input GPIO
#define PCNT_INPUT_CTRL_IO  5  // Control GPIO HIGH=count up, LOW=count down
#define LEDC_OUTPUT_IO      18 // Output GPIO of a sample 1 Hz pulse generator