Wouter Van den Bogaert
/
PGO6_VoteController_template
PGO6
main.cpp
- Committer:
- s0130594
- Date:
- 2019-10-28
- Revision:
- 3:14b20a4f36d0
- Parent:
- 2:5b7d055dbc91
- Child:
- 4:15e7cac255da
File content as of revision 3:14b20a4f36d0:
#define APP_VERSION 0.6f #define MQTT_VERSION 3 #define BROKER_NAME "broker.hivemq.com" #define BROKER_PORT 1883 #include "debounce_button.h" #include "EthernetInterface.h" #include "MQTTNetwork.h" #include "MQTTmbed.h" #include "MQTTClient.h" #include "mbed.h" char* topic; Serial pc(USBTX, USBRX); /** TODO ---- - Check if the button has been pressed. If so, print the amount of clicks to a serial terminal. - Make an MQTT-service which: - starts up a network using EthernetInterface. Make sure the development board requests its address via DHCP. - makes a client and connects it to the broker using a client ID and credentials (username & password). - sends messages at the same topic as the smartphone app from PGO 2. Feel free to choose which Quality of Service you are going to use. Make a separate function which handles the sending procedure. Therefore, this function can be called each time we want to send a certain message. - When the button is pressed once, we send an upvote. When pressed twice, a downvote is sent. By pressing 4 times, the program disconnects from the broker and terminates. Extra ----- - Subscribe to the topic on which the song data is published. Display this received message on the serial terminal. - Test this controller in the complete system of PGO 2. Use these controllers instead of the smartphones. Tips & tricks ------------- - To generate an interrupt on the press of a button, use: InterruptIn button(USER_BUTTON); ... button.fall(callback(someFunction)); - Before implementing MQTT, test the multiclick feature first. - Have a look at the MQTT-library for Mbed and the HelloMQTT-example. - To have a uniform message sending procedure, use the following function usage: sendMessage(&client, topic, buf, qos, retained, duplicate) */ int main(int argc, char* argv[]) { InterruptIn button(USER_BUTTON); button.fall(callback(button1_onpressed_cb)); multiclick_state = 0; pc.printf("Print print \n"); while(true){ if(!button1_busy && !button1_pressed){ // Toon eindtotaal pc.printf("Er is zoveel keer geklikt: %d",button_count); pc.printf("\n"); } } return 0; }