MCUXpresso SDK Documentation
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Overview

Overview#

This application implements the peripheral role. It:

  1. Advertises using a connectable advertiser

  2. Enables temperature service

  3. Records a new temperature reading every second

  4. Updates the temperature in the temperature service any time a new temperature is recorded

Running the demo#

If you paired to another phone before, first perform a full flash erase and reprogram the application. The HCIOT_PERIPH device must be forgotten/unpaired on the smartphone after reflashing the application, since the bonding passkey is lost on the MCXW23.

1.There are two possible modes for the MCXW23 at startup: 1.A. Upon the first startup, the MCXW23 automatically enters shelf-mode. 1.A.1.the expected output is shown below: Using bdAddr from UUID bd_addr = ed:41:cf:0f:d9:ce Eventstore content: Last recorded device state: 0 Flash erase done Entering device state 1 Flash write done

1.A.2.Press WAKEUP button to enter active state and start advertising.
	The expected output is similar to the following:
	Using bdAddr from UUID
	bd_addr = ed:41:cf:0f:d9:ce
	Eventstore content:
	0s: Device state changed to 1
	0s: Device state changed to 2
	0s: Radio state changed to advertising
	Last recorded device state: 2
	Entering device state 2
	Start ADV
	Flash erase done
	Flash write done
	Measurement initiated
	Measurement started
	Measurement done @ 5: 21
1.B.1.If the application has already run, The MCXW23 automatically starts advertising so no need to press the WAKEUP button.
The expected output is similar to the following:
	Using bdAddr from UUID
	bd_addr = 7f:6d:8b:36:fc:ef
	Eventstore content:
	1s: Device state changed to 1
	0s: Device state changed to 2
	0s: Radio state changed to advertising
	Last recorded device state: 2
	Entering device state 2
	Start ADV
	Flash erase done
	Flash write done
	Measurement initiated
	Measurement done @ 7: 27
	Measurement initiated
	Measurement done @ 8: 27
	Measurement initiated
	Measurement done @ 9: 27

  1. Open NXP IoT toolbox on your smartphone.

  2. Click on “Thermometer”

  3. There are two possible scenarios: the health_care_iot_peripheral bonding feature is either enabled or disabled:

    4.A. Bonding Disabled: 4.A.1. The app lists a device called “HCIOT_PERIPH” marked as ‘Unbonded’. Click on it. 4.A.2. The Thermometer window is opened. Thermometer and Sensor Location both show ‘—’ 4.A.3. wait for a moment to simulate a temperature measurement. A measurement for the ambient temperature value is shown on the smartphone with name of the sensor location.

    4.B. Bonding Enabled: There are two possible scenarios when the bonding feature is enabled: 4.B.A The health_care_iot_peripheral is not paired yet (first time): 4.B.A.1. The app lists a device called “HCIOT_PERIPH” marked as ‘Unbonded’. Click on it. 4.B.A.2. The Thermometer window is opened. The status is Disconnected. Thermometer and Sensor Location both show ‘—’ 4.B.A.3. Click on ‘Connect’. 4.B.A.4. A pop-up called ‘Bluetooth pairing request’ is opened to enter the passkey for bonding, Enter 999999. 4.B.A.5. Wait for a moment to simulate a temperature measurement. A measurement for the ambient temperature value is shown on the smartphone with name of the sensor location.

     4.B.B The health_care_iot_peripheral is already paired :
 	4.B.B.1. The app lists a device called "HCIOT_PERIPH" marked as 'Bonded'. Click on it.
 	4.B.B.2. The Thermometer window is opened. The status is Connected. Thermometer and Sensor Location both show '---'
 	4.B.B.3. Wait for a moment to simulate a temperature measurement. A measurement for the ambient temperature value is shown on the smartphone with name of the sensor location.

Supported boards:#

  • FRDM-MCXW32

  • MCXW23-EVK

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