scanOrder

uint8_t scanOrder[N_SENSORS * N_MEASUREMENTS_PER_SENSOR]

scanOrder defines the order in which the sensors will be measured. TouchLib combines N_MEASUREMENTS_PER_SENSOR measurements in one sample to reduce noise. The order in which the sensors are measured is determined on startup by a random generator and determines on the number of sensors (N_SENSORS) and the number of measurements per sensor (N_MEASUREMENTS_PER_SENSOR, typically 8 or 16).

The random order will reduce the influence of periodic noise sources. Since the order is random but deterministic (determined by N_SENSORS and N_MEASUREMENTS_PER_SENSOR), it will always be the same for all boards if N_SENSORS and N_MEASUREMENTS_PER_SENSOR is unchanged.

This also means that if there is only one sensor, there is no benefit of the random order. If a system with only one sensor experiences interference from (periodic) noise sources, it can therefore be beneficial to add a few dummy sensors.

calibratedMaxDelta

int tlSensors.data[<n>].calibratedMaxDelta

Maximum delta value that was recorded during semi-automatic tuning. This value is only used in the printBar function.