/*! \fn touchClearCurrentDetections(void)
* \brief Clear interrupt line for detections
*/
void touchClearCurrentDetections(void)
{
uint8_t temp_uint;
readDataFromTS(REG_AT42QT_SLIDER_POS, &temp_uint);
readDataFromTS(REG_AT42QT_DET_STAT, &temp_uint);
readDataFromTS(REG_AT42QT_KEY_STAT1, &temp_uint);
readDataFromTS(REG_AT42QT_KEY_STAT2, &temp_uint);
}
/*! \fn touchWaitForButtonsReleased(void)
* \brief Wait for the user to remove his finger from the buttons
*/
void touchWaitForButtonsReleased(void)
{
uint8_t keys_detection_status;
do
{
readDataFromTS(REG_AT42QT_DET_STAT, &keys_detection_status);
}
while (keys_detection_status & (AT42QT2120_SDET_MASK | AT42QT2120_TDET_MASK));
}
/*! \fn touchWaitForWheelReleased(void)
* \brief Wait for the user to remove his finger from the wheel
*/
void mooltipass_touch_sensing::touchWaitForWheelReleased(void)
{
uint8_t keys_detection_status;
do
{
readDataFromTS(REG_AT42QT_DET_STAT, &keys_detection_status);
}
while (keys_detection_status & AT42QT2120_SDET_MASK);
}
void afterTouchInitTests(void)
{
//#define TEST_TS
#ifdef TEST_TS
uint8_t temp_byte;
uint16_t temp_uint = 0;
RET_TYPE temp_ret_type = RETURN_RIGHT_PRESSED;
activityDetectedRoutine();
oledWriteActiveBuffer();
activateProxDetection();
while(!(temp_ret_type & RETURN_LEFT_PRESSED))
{
if (temp_ret_type != RETURN_NO_CHANGE)
{
oledSetXY(0,0);
readDataFromTS(REG_AT42QT_SLIDER_POS, &temp_byte);
printf("POS: %02X\r\n", temp_byte);
readDataFromTS(REG_AT42QT_DET_STAT, &temp_byte);
printf("DET STAT: %02X\r\n", temp_byte);
readDataFromTS(REG_AT42QT_KEY_STAT1, &temp_byte);
printf("DET1: %02X\r\n", temp_byte);
readDataFromTS(REG_AT42QT_KEY_STAT2, &temp_byte);
printf("DET2: %02X\r\n", temp_byte);
printf("counter: %04X\r\n", temp_uint++);
}
temp_ret_type = touchDetectionRoutine();
}
activateGuardKey();
launchCalibrationCycle();
while(1)
{
if (temp_ret_type != RETURN_NO_CHANGE)
{
oledSetXY(0,0);
readDataFromTS(REG_AT42QT_SLIDER_POS, &temp_byte);
printf("POS: %02X\r\n", temp_byte);
readDataFromTS(REG_AT42QT_DET_STAT, &temp_byte);
printf("DET STAT: %02X\r\n", temp_byte);
readDataFromTS(REG_AT42QT_KEY_STAT1, &temp_byte);
printf("DET1: %02X\r\n", temp_byte);
readDataFromTS(REG_AT42QT_KEY_STAT2, &temp_byte);
printf("DET2: %02X\r\n", temp_byte);
printf("counter: %04X\r\n", temp_uint++);
}
temp_ret_type = touchDetectionRoutine();
}
#endif
}
/*! \fn getTouchedButton()
* \brief Find which button is touched
* \return LEFT_BUTTON or RIGHT_BUTTON
*/
RET_TYPE getTouchedButton(void)
{
uint8_t temp_byte;
readDataFromTS(AT42QT2120_ADDR, REG_AT42QT_KEY_STAT2, &temp_byte);
if (temp_byte & 0x02)
{
return LEFT_BUTTON;
}
else
{
return RIGHT_BUTTON;
}
}
/*! \fn isButtonTouched()
* \brief Check if the a touch button is touched
* \return RETURN_OK or RETURN_NOK
*/
RET_TYPE isButtonTouched(void)
{
uint8_t temp_byte;
readDataFromTS(AT42QT2120_ADDR, REG_AT42QT_DET_STAT, &temp_byte);
if ((temp_byte & 0x01) && !(temp_byte & 0x02))
{
return RETURN_OK;
}
else
{
return RETURN_NOK;
}
}
/*! \fn checkTSPres()
* \brief Check that the AT42QT2120 is here
* \return RETURN_OK or RETURN_NOK
*/
static inline RET_TYPE checkTSPres(void)
{
RET_TYPE temp_return;
uint8_t temp_byte;
temp_return = readDataFromTS(REG_AT42QT_CHIP_ID, &temp_byte);
if (temp_return != RETURN_OK)
{
return temp_return;
}
else if(temp_byte != AT42QT2120_ID)
{
return RETURN_NOK;
}
else
{
return RETURN_OK;
}
}
/*! \fn checkTSPres()
* \brief Check that the AT42QT2120 is here
* \return RETURN_OK or RETURN_NOK
*/
uint8_t mooltipass_touch_sensing::checkTSPres(void)
{
uint8_t temp_return;
uint8_t temp_byte;
temp_return = readDataFromTS(REG_AT42QT_CHIP_ID, &temp_byte);
if (temp_return != RETURN_OK)
{
return temp_return;
}
else if(temp_byte != AT42QT2120_ID)
{
return RETURN_NOK;
}
else
{
return RETURN_OK;
}
}
/*! \fn touchDetectionRoutine(uint8_t led_mask)
* \brief Touch detection routine
* \param led_mask Mask containing which LEDs to switchoff
* \return Touch detection result (see touch_detect_return_t)
*/
RET_TYPE touchDetectionRoutine(uint8_t led_mask)
{
RET_TYPE return_val = RETURN_NO_CHANGE;
uint8_t keys_detection_status;
uint8_t led_states[NB_KEYS];
uint8_t temp_bool = FALSE;
uint8_t temp_uint;
// Set the LEDs on by default
memset((void*)led_states, AT42QT2120_OUTPUT_H_VAL, NB_KEYS);
// Switch them off depending on mask
for (temp_uint = 0; temp_uint < NB_KEYS; temp_uint++)
{
if (led_mask & (1 << temp_uint))
{
led_states[temp_uint] = AT42QT2120_OUTPUT_L_VAL;
}
}
if (isTouchChangeDetected())
{
// Set temp bool to TRUE
temp_bool = TRUE;
// Read detection status register
readDataFromTS(REG_AT42QT_DET_STAT, &keys_detection_status);
// Unused byte that needs to be read
readDataFromTS(REG_AT42QT_KEY_STAT1, &temp_uint);
// If wheel is touched
if (keys_detection_status & AT42QT2120_SDET_MASK)
{
// Get position and update global var
readDataFromTS(REG_AT42QT_SLIDER_POS, &last_raw_wheel_position);
// Update LED states
led_states[getWheelTouchDetectionQuarter()] = AT42QT2120_OUTPUT_L_VAL;
return_val |= RETURN_WHEEL_PRESSED;
}
else
{
return_val |= RETURN_WHEEL_RELEASED;
}
// Read button touched register
readDataFromTS(REG_AT42QT_KEY_STAT2, &temp_uint);
// If one button is touched
if ((keys_detection_status & AT42QT2120_TDET_MASK) && !(keys_detection_status & AT42QT2120_SDET_MASK))
{
if (temp_uint & 0x02)
{
// Left button
led_states[TOUCHPOS_LEFT] = AT42QT2120_OUTPUT_L_VAL;
return_val |= RETURN_LEFT_PRESSED;
return_val |= RETURN_RIGHT_RELEASED;
}
else if(temp_uint & 0x08)
{
// Right button
led_states[TOUCHPOS_RIGHT] = AT42QT2120_OUTPUT_L_VAL;
return_val |= RETURN_RIGHT_PRESSED;
return_val |= RETURN_LEFT_RELEASED;
}
else
{
return_val |= RETURN_PROX_DETECTION;
}
}
else
{
return_val |= RETURN_PROX_RELEASED;
return_val |= RETURN_LEFT_RELEASED;
return_val |= RETURN_RIGHT_RELEASED;
}
// Switch on cathode if activity
if (return_val & TOUCH_PRESS_MASK)
{
activityDetectedRoutine();
}
// Touch inhibit logic
if ((return_val & TOUCH_PRESS_MASK) == 0)
{
touch_inhibit = FALSE;
}
else if (touch_inhibit == TRUE)
{
return_val = RETURN_NO_CHANGE;
}
}
// If there's a touch change or led mask has changed
if ((temp_bool == TRUE) || (led_mask != last_led_mask))
{
last_led_mask = led_mask;
writeDataToTS(LEFT_LED_REGISTER, led_states[TOUCHPOS_LEFT]);
writeDataToTS(RIGHT_LED_REGISTER, led_states[TOUCHPOS_RIGHT]);
writeDataToTS(WHEEL_TLEFT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_TLEFT]);
writeDataToTS(WHEEL_TRIGHT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_TRIGHT]);
writeDataToTS(WHEEL_BLEFT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_BLEFT]);
writeDataToTS(WHEEL_BRIGHT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_BRIGHT]);
// In some rare cases LED state changes can create detections. In that case we add a small delay
timerBasedDelayMs(2);
touchClearCurrentDetections();
}
return return_val;
}
/*! \fn touchDetectionRoutine(uint8_t led_mask)
* \brief Touch detection routine
* \param led_mask Mask containing which LEDs to switchoff
* \return Touch detection result (see touch_detect_return_t)
*/
uint8_t mooltipass_touch_sensing::touchDetectionRoutine(uint8_t led_mask)
{
uint8_t return_val = RETURN_NO_CHANGE;
uint8_t keys_detection_status;
uint8_t led_states[NB_KEYS];
uint8_t temp_bool = false;
uint8_t temp_uint;
// Set the LEDs on by default
memset((void*)led_states, AT42QT2120_OUTPUT_H_VAL, NB_KEYS);
// Switch them off depending on mask
for (temp_uint = 0; temp_uint < NB_KEYS; temp_uint++)
{
if (led_mask & (1 << temp_uint))
{
led_states[temp_uint] = AT42QT2120_OUTPUT_L_VAL;
}
}
if (isTouchChangeDetected())
{
// Set temp bool to true
temp_bool = true;
// Read detection status register
readDataFromTS(REG_AT42QT_DET_STAT, &keys_detection_status);
// Unused byte that needs to be read
readDataFromTS(REG_AT42QT_KEY_STAT1, &temp_uint);
// If wheel is touched
if (keys_detection_status & AT42QT2120_SDET_MASK)
{
// Get position and update global var
readDataFromTS(REG_AT42QT_SLIDER_POS, &last_raw_wheel_position);
// Update LED states
led_states[getWheelTouchDetectionQuarter()] = AT42QT2120_OUTPUT_L_VAL;
return_val |= RETURN_WHEEL_PRESSED;
}
else
{
return_val |= RETURN_WHEEL_RELEASED;
}
// Read button touched register
readDataFromTS(REG_AT42QT_KEY_STAT2, &temp_uint);
// If one button is touched
if ((keys_detection_status & AT42QT2120_TDET_MASK) && !(keys_detection_status & AT42QT2120_SDET_MASK))
{
if (temp_uint & 0x02)
{
// Left button
led_states[TOUCHPOS_LEFT] = AT42QT2120_OUTPUT_L_VAL;
return_val |= RETURN_LEFT_PRESSED;
return_val |= RETURN_RIGHT_RELEASED;
}
else if(temp_uint & 0x08)
{
// Right button
led_states[TOUCHPOS_RIGHT] = AT42QT2120_OUTPUT_L_VAL;
return_val |= RETURN_RIGHT_PRESSED;
return_val |= RETURN_LEFT_RELEASED;
}
else
{
return_val |= RETURN_PROX_DETECTION;
}
}
else
{
return_val |= RETURN_PROX_RELEASED;
return_val |= RETURN_LEFT_RELEASED;
return_val |= RETURN_RIGHT_RELEASED;
}
// Switch on cathode if activity
if (return_val & TOUCH_PRESS_MASK)
{
//activityDetectedRoutine();
}
}
// If there's a touch change or led mask has changed
if ((temp_bool == true) || (led_mask != last_led_mask))
{
last_led_mask = led_mask;
writeDataToTS(LEFT_LED_REGISTER, led_states[TOUCHPOS_LEFT]);
writeDataToTS(RIGHT_LED_REGISTER, led_states[TOUCHPOS_RIGHT]);
writeDataToTS(WHEEL_TLEFT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_TLEFT]);
writeDataToTS(WHEEL_TRIGHT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_TRIGHT]);
writeDataToTS(WHEEL_BLEFT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_BLEFT]);
writeDataToTS(WHEEL_BRIGHT_LED_REGISTER, led_states[TOUCHPOS_WHEEL_BRIGHT]);
}
return return_val;
}
