mpr121.h

#define MPR121_ADDR 0x5A

#define MPR121_TOUCHSTATUS_L 0x00
#define MPR121_TOUCHSTATUS_H 0x01
#define MPR121_FILTDATA_0L  0x04
#define MPR121_FILTDATA_0H  0x05
#define MPR121_BASELINE_0   0x1E
#define MPR121_MHDR         0x2B
#define MPR121_NHDR         0x2C
#define MPR121_NCLR         0x2D
#define MPR121_FDLR         0x2E
#define MPR121_MHDF         0x2F
#define MPR121_NHDF         0x30
#define MPR121_NCLF         0x31
#define MPR121_FDLF         0x32
#define MPR121_NHDT         0x33
#define MPR121_NCLT         0x34
#define MPR121_FDLT         0x35

#define MPR121_TOUCHTH_0    0x41
#define MPR121_RELEASETH_0    0x42
#define MPR121_DEBOUNCE 0x5B
#define MPR121_CONFIG1 0x5C
#define MPR121_CONFIG2 0x5D
#define MPR121_CHARGECURR_0 0x5F
#define MPR121_CHARGETIME_1 0x6C
#define MPR121_ECR 0x5E
#define MPR121_AUTOCONFIG0 0x7B
#define MPR121_AUTOCONFIG1 0x7C
#define MPR121_UPLIMIT   0x7D
#define MPR121_LOWLIMIT  0x7E
#define MPR121_TARGETLIMIT  0x7F

#define MPR121_GPIODIR  0x76
#define MPR121_GPIOEN  0x77
#define MPR121_GPIOSET  0x78
#define MPR121_GPIOCLR  0x79
#define MPR121_GPIOTOGGLE  0x7A

#define MPR121_SRST 0x80