#define PCA9685_CH_MAX 15
-int resource_pca9685_init(unsigned int ch);
+int resource_pca9685_init(unsigned int ch, unsigned int freq);
int resource_pca9685_fini(unsigned int ch);
int resource_pca9685_set_frequency(unsigned int freq_hz);
int resource_pca9685_set_value_to_channel(unsigned int channel, int on, int off);