PCA9685_ALL_LED_ON_L
return reg <= REG_OFF_H(15) || reg >= PCA9685_ALL_LED_ON_L;
ret = pca9685_write_4reg(chip, PCA9685_ALL_LED_ON_L, (u8[]){ 0, LED_FULL, 0, LED_FULL });
#define REG_ON_L(C) ((C) >= PCA9685_MAXCHAN ? PCA9685_ALL_LED_ON_L : LED_N_ON_L((C)))