MQTT example using the Freescale FRDM-K64F platform without additional hardware.
Dependencies: EthernetInterface MQTT mbed-rtos mbed
This is a simple MQTT demo that does the following:
- connect/disconnect to the MQTT Dashboard public broker (broker.mqttdashboard.com)
- subscribe to a user-defined MQTT topic
- publish messages from the FRDM-K64F board when SW2 or SW3 is pressed
- receive messages from a web dashboard client to change the color of the LED
- send serial output regarding connection status and MQTT messages sent/received
The web client code can be found at the following URL:
https://github.com/msbaylis/frdm-k64f-mqtt-dashboard.git
NOTE: make sure you change the #defines in main.cpp to specify your client ID and MQTT topic. I used the MAC address of my FRDM-K64F board without colons for the client ID. Assuming you're board is properly connected to a network, the serial output should display info including the board's MAC address.
k64f.h@0:9796509d718e, 2016-02-10 (annotated)
- Committer:
- msbaylis
- Date:
- Wed Feb 10 18:39:26 2016 +0000
- Revision:
- 0:9796509d718e
Initial committ
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
msbaylis | 0:9796509d718e | 1 | #ifndef K64F_H_ |
msbaylis | 0:9796509d718e | 2 | #define K64F_H_ |
msbaylis | 0:9796509d718e | 3 | |
msbaylis | 0:9796509d718e | 4 | typedef enum color {off, red, green, blue} color_t; |
msbaylis | 0:9796509d718e | 5 | |
msbaylis | 0:9796509d718e | 6 | Serial pc(USBTX, USBRX); |
msbaylis | 0:9796509d718e | 7 | DigitalOut redLED(LED_RED); |
msbaylis | 0:9796509d718e | 8 | DigitalOut greenLED(LED_GREEN); |
msbaylis | 0:9796509d718e | 9 | DigitalOut blueLED(LED_BLUE); |
msbaylis | 0:9796509d718e | 10 | InterruptIn switch2(SW2); |
msbaylis | 0:9796509d718e | 11 | InterruptIn switch3(SW3); |
msbaylis | 0:9796509d718e | 12 | |
msbaylis | 0:9796509d718e | 13 | #endif // K64F.H |