/*! \fn initTouchSensing()
* \brief Initialize AT42QT2120
*/
RET_TYPE initTouchSensing(void)
{
#ifndef HARDWARE_V1
RET_TYPE temp_return = checkTSPres();
if (temp_return == RETURN_OK)
{
// Perform measurements every 16ms
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_LP, 1);
// Settings for each key
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY0_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Wheel
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY1_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Wheel
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY2_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Wheel
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY3_CTRL, AT42QT2120_GUARD_VAL|AT42QT2120_AKS_GP1_MASK); // Guard key
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY4_CTRL, AT42QT2120_OUTPUT_L_VAL); // LED (top right)
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY5_CTRL, AT42QT2120_OUTPUT_L_VAL); // LED (right button)
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY6_CTRL, AT42QT2120_OUTPUT_L_VAL); // LED (bottom right)
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY7_CTRL, AT42QT2120_OUTPUT_L_VAL); // LED (bottom left)
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY8_CTRL, AT42QT2120_OUTPUT_L_VAL); // LED (left button)
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY9_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Left button
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY10_CTRL, AT42QT2120_OUTPUT_L_VAL); // LED (top left)
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_KEY11_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Right button
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_SLID_OPT, 0x40); // Enable wheel
writeDataToTS(AT42QT2120_ADDR, REG_AT42QT_SLID_OPT, 0xC0); // Enable wheel
}
return temp_return;
#else
return RETURN_NOK;
#endif
}
/*! \fn initTouchSensing()
* \brief Initialize AT42QT2120
*/
RET_TYPE initTouchSensing(void)
{
#if !defined(HARDWARE_V1) && !defined(V2_DEVELOPERS_BOTPCB_BOOTLOADER_SETUP)
RET_TYPE temp_return = checkTSPres();
uint8_t reg, val;
uint8_t i;
if (temp_return == RETURN_OK)
{
// Initialization sequence stored in flash
for (i = 0; i < sizeof(touch_init);)
{
reg = pgm_read_byte(&touch_init[i++]);
val = pgm_read_byte(&touch_init[i++]);
writeDataToTS(reg, val);
}
// Custom sensitivity settings
writeDataToTS(REG_AT42QT_DI, getMooltipassParameterInEeprom(TOUCH_DI_PARAM)); // Increase detection integrator value
writeDataToTS(REG_AT42QT_CHARGE_TIME, getMooltipassParameterInEeprom(TOUCH_CHARGE_TIME_PARAM)); // Prolongs the charge transfer period of signal acq
writeDataToTS(REG_AT42QT_KEY0_PULSE_SCL, getMooltipassParameterInEeprom(TOUCH_WHEEL_OS_PARAM0));// Touch weel oversample (gain one bit by default)
writeDataToTS(REG_AT42QT_KEY1_PULSE_SCL, getMooltipassParameterInEeprom(TOUCH_WHEEL_OS_PARAM1));// Touch weel oversample (gain one bit by default)
writeDataToTS(REG_AT42QT_KEY2_PULSE_SCL, getMooltipassParameterInEeprom(TOUCH_WHEEL_OS_PARAM2));// Touch weel oversample (gain one bit by default)
}
return temp_return;
#else
return RETURN_NOK;
#endif
}
/*! \fn begin()
* \brief Initialize AT42QT2120
*/
uint8_t mooltipass_touch_sensing::begin(void)
{
WIRE.begin();
uint8_t temp_return = checkTSPres();
if (temp_return == RETURN_OK)
{
// Perform measurements every 16ms
writeDataToTS(REG_AT42QT_LP, 1);
// LED settings
writeDataToTS(REG_AT42QT_KEY4_CTRL, AT42QT2120_OUTPUT_H_VAL); // LED (top right)
writeDataToTS(REG_AT42QT_KEY5_CTRL, AT42QT2120_OUTPUT_H_VAL); // LED (right button)
writeDataToTS(REG_AT42QT_KEY6_CTRL, AT42QT2120_OUTPUT_H_VAL); // LED (bottom right)
writeDataToTS(REG_AT42QT_KEY7_CTRL, AT42QT2120_OUTPUT_H_VAL); // LED (bottom left)
writeDataToTS(REG_AT42QT_KEY8_CTRL, AT42QT2120_OUTPUT_H_VAL); // LED (left button)
writeDataToTS(REG_AT42QT_KEY10_CTRL, AT42QT2120_OUTPUT_H_VAL); // LED (top left)
// Sensitivity settings
#ifndef LOW_SENSITIVITY
writeDataToTS(REG_AT42QT_DI, 6); // Increase detection integrator value
writeDataToTS(REG_AT42QT_KEY0_PULSE_SCL, 0x21); // Oversample to gain one bit
writeDataToTS(REG_AT42QT_KEY1_PULSE_SCL, 0x21); // Oversample to gain one bit
writeDataToTS(REG_AT42QT_KEY2_PULSE_SCL, 0x21); // Oversample to gain one bit
#endif
writeDataToTS(REG_AT42QT_TRD, 50); // Recalibration if touch detected for more than 8 seconds
// Key settings
writeDataToTS(REG_AT42QT_KEY0_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Enable Wheel key
writeDataToTS(REG_AT42QT_KEY1_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Enable Wheel key
writeDataToTS(REG_AT42QT_KEY2_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Enable Wheel key
writeDataToTS(REG_AT42QT_KEY9_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Enable Left button
writeDataToTS(REG_AT42QT_KEY11_CTRL, AT42QT2120_TOUCH_KEY_VAL|AT42QT2120_AKS_GP1_MASK); // Enable Right button
writeDataToTS(REG_AT42QT_SLID_OPT, 0x40); // Enable wheel
writeDataToTS(REG_AT42QT_SLID_OPT, 0xC0); // Enable wheel
activateGuardKey(); // Guard key
}
return temp_return;
}
