6.2 Extended Output

MTCH9010 supports Universal Asynchronous Receiver and Transmitter (UART) output. There are four output formats available:
  • Both standard measurement (raw data) and delta
  • Only standard measurement (raw data)
  • Only delta
  • MPLAB® Data Visualizer Data Stream protocol format
By default, both the raw measurement and delta parameters are provided. The three other output formats can be selected by configuring the output format through the Enhanced Configuration.

The Extended Output mode of MTCH9010 provides information on the liquid detection parameters through serial communication. This mode is disabled by default but can be enabled through the UART_EN pin or by using the Enhanced Configuration mode.

The parameters displayed by the Extended Output mode are presented below:

  1. The first information offered by the Extended Output mode is the firmware version:

    Firmware vX.Y.Z

    • X - the major version of the firmware.
    • Y - the minor version of the firmware.
    • Z - the patch version of the firmware.
  2. The reference value and the liquid detection threshold represent the following series of parameters:

    <reference_value> <liquid_detection_threshold>

    • <reference_value> - the value measured with a completely dry sensor or an initial desired sensor state.
    • <liquid_detection_threshold> - the value of the liquid detection threshold configured by the user.

  3. The next parameters are the standard and delta measurements that are displayed after each new measurement:

    <standard_measurement> <delta_measurement>

    • <standard_measurement> - the standard value measured on the sensor.
    • <delta_measurement> - the value obtained by subtracting the reference value from the standard measurement value.
    Note: In the Enhanced Configuration mode, besides the option where both standard and delta measurements are displayed, there is also the option to display the standard or delta measurement only.
Important: The firmware version, the reference value, and the liquid detection threshold are displayed only once at the start of the operation.

The Extended Output mode can be accessed using the UART_EN pin according to the table below:

Table 6-2. Extended Output
Voltage on UART_EN PinExtended Output Selection
0VEnabled
VDDDisabled
Note: If the Extended Output mode is enabled using the UART_EN pin, the output format is both standard and delta measurement. Selecting another option for the Extended Output format must be done through the Enhanced Configuration mode.
After configuring the operation mode and the Sleep period in the Enhanced Configuration mode, the following two settings are the ones that configure the Extended Output mode:
Table 6-3. Extended Output Options in the Enhanced Configuration Mode
Enhanced Configuration SelectionCommandOption
Extended Output mode0Disabled
1Enabled
Extended Output Format(1)0Delta measurement
1Standard measurement
2Both standard and delta measurements
3MPLAB® Data Visualizer Data Stream protocol format(2)
Note:
  1. Only if the Extended Output mode is enabled these options are available in the Enhanced Configuration mode.
  2. Refer to the MPLAB Data Visualizer User's Guide.