Kwame Nyantakyi
Initial commit
Dependencies: C12832 MQTT_MbedOS mbed
Revision 0:fb05faf411e7, committed 2016-12-05
- Comitter:
- co657_kn241
- Date:
- Mon Dec 05 15:07:11 2016 +0000
- Commit message:
- Initial commit
Changed in this revision
diff -r 000000000000 -r fb05faf411e7 C12832.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832.lib Mon Dec 05 15:07:11 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/co657_frmb/code/C12832/#7accdf0bfc18
diff -r 000000000000 -r fb05faf411e7 MQTT.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MQTT.lib Mon Dec 05 15:07:11 2016 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/azazeal88/code/MQTT_MbedOS/#ac90fd2dd859
diff -r 000000000000 -r fb05faf411e7 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Dec 05 15:07:11 2016 +0000
@@ -0,0 +1,223 @@
+/**
+ * Door lock Mechanism which work similar to locking and unlocking
+ * by using an RFID card to scan nfc tag which is publish onto MQTT
+ * server by saying in door is locked or unlucked.
+ * By Kwame Nyantakyi
+
+ * Use of MQTT client code created by Daniel Knox and Fred Barnes
+**/
+
+//
+#include "mbed.h"
+#include "C12832.h"
+#include "MQTTEthernet.h"
+#include "MQTTClient.h"
+
+/* speed we talk up the [USB] serial-port at */
+#define HOST_SPEED (38400)
+
+// Using Arduino pin notation
+C12832 lcd(D11, D13, D12, D7, D10);
+
+static Serial host (USBTX, USBRX); /* connection to host */
+
+// led display
+DigitalOut red_led(D5);
+DigitalOut green_led(D9);
+
+// joystick left and right
+DigitalIn left(A4);
+AnalogIn right(A5);
+
+// sw2 and sw3
+InterruptIn sw2_int (PTC6); /* interrupts for the two on-board switches */
+InterruptIn sw3_int (PTA4);
+
+static volatile int sw2_trig; /* switches triggered? */
+static volatile int sw3_trig;
+
+PwmOut spkr(D6);
+
+const char* def = "Unknown";
+const char* stat = "Unknown";
+
+
+/* connection stuff for MQTT */
+typedef struct S_mqtt_params {
+ char *hostname;
+ int port;
+ char *topic;
+ char *clientid;
+} mqtt_params_t;
+
+/* configure MQTT with hostname, port, topic and clientid */
+static mqtt_params_t mqtt_config = {
+hostname: "129.12.44.120"
+ ,
+ port: 1883,
+topic: "unikent/users/kn241/room/status"
+ ,
+clientid: "kn241"
+};
+
+/*
+* prints stuffs on the serial host and lcd
+*/
+static int set_up(void)
+{
+ host.baud (HOST_SPEED);
+ host.printf ("\r\n\r\nEthernet MQTT client from K64F\r\n");
+
+ lcd.cls ();
+ lcd.locate (0, 0);
+ lcd.printf ("Door Lock Mechanism\n");
+
+ return 0;
+}
+
+
+/*
+* Display the status of the connection to MQTT aswell as
+* the activity of the user.
+*
+* Roboust function used to print out format,arg of server
+* server connection and user interaction on the serial host
+* and lcd
+*/
+static int display_info(const char *format, ...)
+{
+ va_list arg;
+ int re;
+
+ va_start(arg, format);
+ re = host.vprintf (format, arg);
+ va_end (arg);
+ host.printf ("\r\n");
+
+ lcd.fill (0, 20, 128, 12, 0);
+ lcd.locate (0, 15);
+ va_start (arg, format);
+ lcd.vprintf (format, arg);
+ va_end (arg);
+
+ return re;
+}
+
+/* plays sounds and sets chars to accepted */
+void accepted()
+{
+ def = "Accepted";
+ stat= "Unlocked";
+ for (float i=2000.0f; i<10000.0f; i+=100) {
+ spkr.period(1.0f/i);
+ spkr=0.5;
+ wait(0.02);
+ spkr = 0.0;
+ }
+}
+
+/* function which checks when wrong card is scanned */
+void declined()
+{
+ def = "Rejected";
+ stat ="Locked";
+ red_led = !left;
+
+ for (float i=2000.0f; i<10000.0f; i+=100) {
+ spkr.period(1.0/150.0); // 500hz period
+ spkr =0.25;
+ wait(.02);
+ spkr=0.0;
+ }
+}
+
+//main code, where the program runs
+int main()
+{
+ const char *ip;
+ int re = 0;
+ MQTT::Message msg;
+ char buf[200];
+
+ set_up();
+ display_info("Establishing network...");
+
+ /* Brings up the network interface */
+ MQTTEthernet eth = MQTTEthernet ();
+ ip = eth.get_ip_address();
+
+ display_info("IP address is: %s", ip ?: "Not found.");
+
+ /* Create Mbed Client Interface */
+ MQTT::Client<MQTTEthernet, Countdown> client = MQTT::Client<MQTTEthernet, Countdown> (eth);
+
+ /* Create TCP connection */
+ eth.open (eth.getEth());
+ re = eth.connect (mqtt_config.hostname, mqtt_config.port);
+
+
+ if (!re) {
+ display_info ("Connected Status: Good");
+
+ /* Wait for a short length of time to allow user to see output messages. */
+ Thread::wait(1500);
+
+ MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
+ data.keepAliveInterval = 20;
+ data.cleansession = 1;
+ data.MQTTVersion = 3;
+ data.clientID.cstring = mqtt_config.clientid;
+ re = client.connect (data);
+
+ if (!re) {
+ display_info ("MQTT connected!");
+
+ while (!re) {
+ /* clear screen to setup - set up door status*/
+ lcd.cls ();
+ set_up();
+
+ while(1) {
+
+ //Depending on button pressed display a colour
+ red_led = !left;
+ green_led = !right;
+
+ if(right && !left) {
+ accepted();
+ } else if(left && !right) {
+ declined();
+ }
+ display_info("Scan :%s \n", def);
+ sprintf (buf, "%s\n", stat);
+ // QoS 0
+
+ msg.qos = MQTT::QOS0;
+ msg.retained = false;
+ msg.dup = false;
+ msg.payload = (void*)buf;
+ msg.payloadlen = strlen(buf)+1;
+
+ re = client.publish (mqtt_config.topic, msg);
+ wait(1.0);
+
+
+ if (re) {
+ //if data can't be publish
+ display_info ("MQTT publish failed with %d", re);
+ } else {
+ Thread::wait(1500);
+ }
+ }
+ }
+ } else {
+ //
+ display_info ("Failed to connect to MQTT");
+ }
+ } else {
+ display_info ("Failed to connect (TCP)");
+ }
+
+ // closed ethernet socket
+ eth.disconnect();
+}
\ No newline at end of file
diff -r 000000000000 -r fb05faf411e7 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Mon Dec 05 15:07:11 2016 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#d5de476f74dd4de27012eb74ede078f6330dfc3f
diff -r 000000000000 -r fb05faf411e7 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Dec 05 15:07:11 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/d75b3fe1f5cb \ No newline at end of file