/**
* @brief Configures I2C communications and initializes registers to defaults
*
* @return True if initialized successfully. False otherwise.
*/
int gesture_init () {
gesture_ud_delta_ = 0;
gesture_lr_delta_ = 0;
gesture_ud_count_ = 0;
gesture_lr_count_ = 0;
gesture_near_count_ = 0;
gesture_far_count_ = 0;
gesture_state_ = 0;
gesture_motion_ = DIR_NONE;
uint8_t id;
wireReadDataByte(APDS9960_ID, &id);
if(!(id == APDS9960_ID_1) || (id == APDS9960_ID_2)) {
return -1;
}
setMode(ALL, OFF);
wireWriteDataByte(APDS9960_ATIME, DEFAULT_ATIME);
wireWriteDataByte(APDS9960_WTIME, DEFAULT_WTIME);
wireWriteDataByte(APDS9960_PPULSE, DEFAULT_PROX_PPULSE);
wireWriteDataByte(APDS9960_POFFSET_UR, DEFAULT_POFFSET_UR);
wireWriteDataByte(APDS9960_POFFSET_DL, DEFAULT_POFFSET_DL);
wireWriteDataByte(APDS9960_CONFIG1, DEFAULT_CONFIG1);
setLEDDrive(DEFAULT_LDRIVE);
setProximityGain(DEFAULT_PGAIN);
setAmbientLightGain(DEFAULT_AGAIN);
setProxIntLowThresh(DEFAULT_PILT);
setProxIntHighThresh(DEFAULT_PIHT);
setLightIntLowThreshold(DEFAULT_AILT);
setLightIntHighThreshold(DEFAULT_AIHT);
wireWriteDataByte(APDS9960_PERS, DEFAULT_PERS);
wireWriteDataByte(APDS9960_CONFIG2, DEFAULT_CONFIG2);
wireWriteDataByte(APDS9960_CONFIG3, DEFAULT_CONFIG3);
setGestureEnterThresh(DEFAULT_GPENTH);
setGestureExitThresh(DEFAULT_GEXTH);
wireWriteDataByte(APDS9960_GCONF1, DEFAULT_GCONF1);
setGestureGain(DEFAULT_GGAIN);
setGestureLEDDrive(DEFAULT_GLDRIVE);
setGestureWaitTime(DEFAULT_GWTIME);
wireWriteDataByte(APDS9960_GOFFSET_U, DEFAULT_GOFFSET);
wireWriteDataByte(APDS9960_GOFFSET_D, DEFAULT_GOFFSET);
wireWriteDataByte(APDS9960_GOFFSET_L, DEFAULT_GOFFSET);
wireWriteDataByte(APDS9960_GOFFSET_R, DEFAULT_GOFFSET);
wireWriteDataByte(APDS9960_GPULSE, DEFAULT_GPULSE);
wireWriteDataByte(APDS9960_GCONF3, DEFAULT_GCONF3);
setGestureIntEnable(DEFAULT_GIEN);
return 0;
}
/* ----------------------------------------------------------------------------*
*
* Function Name : apds9960init
*
* Description : Configures I2C communications and initializes registers to defaults
*
* Input : None
*
* Output : None
*
* Return : True if initialized successfully. False otherwise
* ----------------------------------------------------------------------------*
* Authors: Sarath S
* Date: May 17, 2017
* ---------------------------------------------------------------------------*/
int apds9960init(void)
{
uint8_t id;
//ledSetLeftLed(LED_ON);
/* Initialize I2C */
I2C1_init();
delayms(700);
/* Read ID register and check against known values for APDS-9960 */
if( !i2c1_read(APDS9960_ID, &id,1) ) {
ledSetRightLed(LED_ON);
return false;
}
ledSetLeftLed(LED_ON);
if( !(id == APDS9960_ID_1 || id == APDS9960_ID_2) ) {
return false;
}
/* Set ENABLE register to 0 (disable all features) */
if( !setMode(ALL, OFF) ) {
return false;
}
/* Set default values for ambient light and proximity registers */
if( !i2c1_write(APDS9960_ATIME, DEFAULT_ATIME) ) {
return false;
}
if( !i2c1_write(APDS9960_WTIME, DEFAULT_WTIME) ) {
return false;
}
if( !i2c1_write(APDS9960_PPULSE, DEFAULT_PROX_PPULSE) ) {
return false;
}
if( !i2c1_write(APDS9960_POFFSET_UR, DEFAULT_POFFSET_UR) ) {
return false;
}
if( !i2c1_write(APDS9960_POFFSET_DL, DEFAULT_POFFSET_DL) ) {
return false;
}
if( !i2c1_write(APDS9960_CONFIG1, DEFAULT_CONFIG1) ) {
return false;
}
if( !setLEDDrive(DEFAULT_LDRIVE) ) {
return false;
}
if( !setProximityGain(DEFAULT_PGAIN) ) {
return false;
}
if( !setAmbientLightGain(DEFAULT_AGAIN) ) {
return false;
}
if( !setProxIntLowThresh(DEFAULT_PILT) ) {
return false;
}
if( !setProxIntHighThresh(DEFAULT_PIHT) ) {
return false;
}
if( !setLightIntLowThreshold(DEFAULT_AILT) ) {
return false;
}
if( !setLightIntHighThreshold(DEFAULT_AIHT) ) {
return false;
}
if( !i2c1_write(APDS9960_PERS, DEFAULT_PERS) ) {
return false;
}
if( !i2c1_write(APDS9960_CONFIG2, DEFAULT_CONFIG2) ) {
return false;
}
if( !i2c1_write(APDS9960_CONFIG3, DEFAULT_CONFIG3) ) {
return false;
}
/* Set default values for gesture sense registers */
if( !setGestureEnterThresh(DEFAULT_GPENTH) ) {
return false;
}
if( !setGestureExitThresh(DEFAULT_GEXTH) ) {
return false;
}
if( !i2c1_write(APDS9960_GCONF1, DEFAULT_GCONF1) ) {
return false;
}
if( !setGestureGain(DEFAULT_GGAIN) ) {
return false;
}
if( !setGestureLEDDrive(DEFAULT_GLDRIVE) ) {
return false;
}
if( !setGestureWaitTime(DEFAULT_GWTIME) ) {
return false;
}
if( !i2c1_write(APDS9960_GOFFSET_U, DEFAULT_GOFFSET) ) {
return false;
}
if( !i2c1_write(APDS9960_GOFFSET_D, DEFAULT_GOFFSET) ) {
return false;
}
if( !i2c1_write(APDS9960_GOFFSET_L, DEFAULT_GOFFSET) ) {
return false;
}
if( !i2c1_write(APDS9960_GOFFSET_R, DEFAULT_GOFFSET) ) {
return false;
}
if( !i2c1_write(APDS9960_GPULSE, DEFAULT_GPULSE) ) {
return false;
}
if( !i2c1_write(APDS9960_GCONF3, DEFAULT_GCONF3) ) {
return false;
}
if( !setGestureIntEnable(DEFAULT_GIEN) ) {
return false;
}
#if 0
/* Gesture config register dump */
uint8_t reg;
uint8_t val;
for(reg = 0x80; reg <= 0xAF; reg++) {
if( (reg != 0x82) && \
(reg != 0x8A) && \
(reg != 0x91) && \
(reg != 0xA8) && \
(reg != 0xAC) && \
(reg != 0xAD) )
{
i2c1_read(reg, val,1);
//debugPutChar(reg);
debugPutString(": 0x");
//debugPutChar(val);
}
}
for(reg = 0xE4; reg <= 0xE7; reg++) {
i2c1_read(reg, val,1);
//debugPutChar(reg);
debugPutString(": 0x");
//debugPutChar(val);
}
#endif
return true;
}/* End of this function */