Olja Jakovljevic
Student project, Faculty of Electrical Engineering, University of Belgrade
Revision 0:0093b6d26596, committed 2022-07-13
- Comitter:
- oljakovljevic
- Date:
- Wed Jul 13 15:08:13 2022 +0000
- Commit message:
- Student project, Faculty of Electrical Engineering, University of Belgrade
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/CONTRIBUTING.md Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,5 @@ +# Contributing to Mbed OS + +Mbed OS is an open-source, device software platform for the Internet of Things. Contributions are an important part of the platform, and our goal is to make it as simple as possible to become a contributor. + +To encourage productive collaboration, as well as robust, consistent and maintainable code, we have a set of guidelines for [contributing to Mbed OS](https://os.mbed.com/docs/mbed-os/latest/contributing/index.html).
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,64 @@ + +# Blinky Mbed OS example + +The example project is part of the [Arm Mbed OS Official Examples](https://os.mbed.com/code/) and is the [getting started example for Mbed OS](https://os.mbed.com/docs/mbed-os/v5.14/quick-start/index.html). It contains an application that repeatedly blinks an LED on supported [Mbed boards](https://os.mbed.com/platforms/). + +You can build the project with all supported [Mbed OS build tools](https://os.mbed.com/docs/mbed-os/latest/tools/index.html). However, this example project specifically refers to the command-line interface tool [Arm Mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). +(Note: To see a rendered example you can import into the Arm Online Compiler, please see our [import quick start](https://os.mbed.com/docs/mbed-os/latest/quick-start/online-with-the-online-compiler.html#importing-the-code).) + +1. [Install Mbed CLI](https://os.mbed.com/docs/mbed-os/latest/quick-start/offline-with-mbed-cli.html). + +1. Clone this repository on your system, and change the current directory to where the project was cloned: + + ```bash + $ git clone git@github.com:armmbed/mbed-os-example-blinky && cd mbed-os-example-blinky + ``` + + Alternatively, you can download the example project with Arm Mbed CLI using the `import` subcommand: + + ```bash + $ mbed import mbed-os-example-blinky && cd mbed-os-example-blinky + ``` + + +## Application functionality + +The `main()` function is the single thread in the application. It toggles the state of a digital output connected to an LED on the board. + +## Building and running + +1. Connect a USB cable between the USB port on the board and the host computer. +2. <a name="build_cmd"></a> Run the following command to build the example project and program the microcontroller flash memory: + ```bash + $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash + ``` +The binary is located at `./BUILD/<TARGET>/<TOOLCHAIN>/mbed-os-example-blinky.bin`. + +Alternatively, you can manually copy the binary to the board, which you mount on the host computer over USB. + +Depending on the target, you can build the example project with the `GCC_ARM`, `ARM` or `IAR` toolchain. After installing Arm Mbed CLI, run the command below to determine which toolchain supports your target: + +```bash +$ mbed compile -S +``` + +## Expected output +The LED on your target turns on and off every 500 milliseconds. + + +## Troubleshooting +If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it. + +## Related Links + +* [Mbed OS Stats API](https://os.mbed.com/docs/latest/apis/mbed-statistics.html). +* [Mbed OS Configuration](https://os.mbed.com/docs/latest/reference/configuration.html). +* [Mbed OS Serial Communication](https://os.mbed.com/docs/latest/tutorials/serial-communication.html). +* [Mbed OS bare metal](https://os.mbed.com/docs/mbed-os/latest/reference/mbed-os-bare-metal.html). +* [Mbed boards](https://os.mbed.com/platforms/). + +### License and contributions + +The software is provided under Apache-2.0 license. Contributions to this project are accepted under the same license. Please see contributing.md for more info. + +This project contains code from other projects. The original license text is included in those source files. They must comply with our license guide.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Servo.lib Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/simon/code/Servo/#36b69a7ced07
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jul 13 15:08:13 2022 +0000
@@ -0,0 +1,235 @@
+/*
+
+This code implements MQTT client for Smart Industry system.
+Proximity sensor detects the presence of the cup and
+the information is sent to the broker.
+If the cap is on the second stage, command for the servo motor, calculated by the broker,
+is sent to the client.
+
+Faculty of Electrical Engineering, University of Belgrade.
+Version (1), July 2022.
+
+*/
+
+// Include the libraries
+#include "mbed.h"
+#include "platform/mbed_thread.h"
+#include <string>
+#include <algorithm>
+#include "Servo.h"
+#include "MQTTClientMbedOs.h"
+
+#define MAX_NETWORKS 10
+#define PRINTF_DELAY_MS 10
+#define YIELD_TIMEOUT_MS 1000
+
+#define PSAdress (0x38<<1)
+
+Servo myservo(D7); // servo motor control signal pin
+Serial pc(USBTX,USBRX);
+
+// Proximity sensor parameters
+I2C i2c(PB_14,PB_13);
+
+int PSresult = 0;
+char modeControlRegister[2] = {0x41, 0xC6}; // Mode Control Register - {Adress, Value}
+char PSregadRegister [2] = {0x44, 0x45}; // PS register values - {PSLSB Adress, PSMSB Adress}
+char PSReading [2];
+int poximityTreshold = 280;
+
+TCPSocket socket;
+MQTTClient client(&socket);
+MQTT::Message message;
+
+char* topic_pub_proximity2 = "PMK_industry/micro/proximity2";
+char* topic_sub_servo2 = "PMK_industry/micro/servo2";
+
+char* receavedMessage;
+
+WiFiInterface *wifi;
+volatile int mems_event = 0;
+uint32_t previous_tick = 0;
+uint32_t current_tick = 0;
+uint8_t high = 0, low = 0;
+float temperature = 0.0f;
+char buffer[32];
+
+int flag = 0;
+
+const char *sec2str(nsapi_security_t sec)
+{
+ switch (sec)
+ {
+ case NSAPI_SECURITY_NONE:
+ return "None";
+ case NSAPI_SECURITY_WEP:
+ return "WEP";
+ case NSAPI_SECURITY_WPA:
+ return "WPA";
+ case NSAPI_SECURITY_WPA2:
+ return "WPA2";
+ case NSAPI_SECURITY_WPA_WPA2:
+ return "WPA/WPA2";
+ case NSAPI_SECURITY_UNKNOWN:
+ default:
+ return "Unknown";
+ }
+}
+
+int scan_networks(WiFiInterface *wifi)
+{
+ printf("Scan:\n");
+
+ // Scan only for the number of networks, first parameter is NULL
+ int count = wifi->scan(NULL, 0);
+
+ // If there are no networks, count == 0, if there is an error, counter < 0
+ if (count <= 0)
+ {
+ printf("scan() failed with return value: %d\n", count);
+ return 0;
+ }
+
+ // Limit number of network arbitrary to some reasonable number
+ count = count < MAX_NETWORKS ? count : MAX_NETWORKS;
+
+ // Create a local pointer to an object, which is an array of WiFi APs
+ WiFiAccessPoint *ap = new WiFiAccessPoint[count];
+
+ // Now scan again for 'count' networks and populate the array of APs
+ count = wifi->scan(ap, count);
+
+ // This time, the number of entries to 'ap' is returned
+ if (count <= 0)
+ {
+ printf("scan() failed with return value: %d\n", count);
+ return 0;
+ }
+
+ // Print out the parameters of each AP:
+ for (int i = 0; i < count; i++)
+ {
+ printf("Network: %s secured: %s BSSID: %hhX:%hhX:%hhX:%hhx:%hhx:%hhx RSSI: %hhd Ch: %hhd\n", ap[i].get_ssid(),
+ sec2str(ap[i].get_security()), ap[i].get_bssid()[0], ap[i].get_bssid()[1], ap[i].get_bssid()[2],
+ ap[i].get_bssid()[3], ap[i].get_bssid()[4], ap[i].get_bssid()[5], ap[i].get_rssi(), ap[i].get_channel());
+ thread_sleep_for(PRINTF_DELAY_MS);
+ }
+ printf("%d networks available.\n", count);
+
+ // Since 'ap' is dynamically allocated pointer to the array of objects, it
+ // needs to be deleted:
+ delete[] ap;
+ return count;
+}
+
+void messageArrivedServo2(MQTT::MessageData& md)
+{
+ MQTT::Message &message = md.message;
+ receavedMessage = (char*)message.payload;
+
+ if (strcmp(receavedMessage,"zero") == 0){ flag = 0;}
+ else if (strcmp(receavedMessage,"left") == 0){ flag = 1;}
+ else if (strcmp(receavedMessage,"right") == 0) { flag = 2;}
+
+}
+
+
+int main()
+
+{
+ const char* hostname = "broker.hivemq.com";
+ int port = 1883;
+
+ // Create a default network interface
+ wifi = WiFiInterface::get_default_instance();
+ if (!wifi) {
+ printf("ERROR: No WiFiInterface found.\n");
+ return -1;
+ }
+
+ // Scan for available networks and aquire information about Access Points
+ int count = scan_networks(wifi);
+ if (count == 0) {
+ printf("No WIFI APs found - can't continue further.\n");
+ return -1;
+ }
+
+ // Connect to the network with the parameters specified in 'mbed_app.json'
+ printf("\nConnecting to %s...\n", MBED_CONF_APP_WIFI_SSID);
+ int ret = wifi->connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
+ if (ret != 0) {
+ printf("\nConnection error: %d\n", ret);
+ return -1;
+ }
+
+ // Print out the information aquired:
+ printf("Success\n\n");
+ printf("MAC: %s\n", wifi->get_mac_address());
+ printf("IP: %s\n", wifi->get_ip_address());
+ printf("Netmask: %s\n", wifi->get_netmask());
+ printf("Gateway: %s\n", wifi->get_gateway());
+ printf("RSSI: %d\n\n", wifi->get_rssi());
+
+ socket.open(wifi);
+ socket.connect(hostname, port);
+
+ int rc=0;
+
+ MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
+ data.MQTTVersion = 3;
+ data.clientID.cstring = "Client2";
+
+ if ((rc = client.connect(data)) != 0)
+ printf("rc from MQTT connect is %d\r\n", rc);
+
+
+ if ((rc = client.subscribe(topic_sub_servo2, MQTT::QOS2, messageArrivedServo2)) != 0)
+ printf("rc from MQTT subscribe is %d\r\n", rc);
+
+ // Start I2C communication
+ i2c.start();
+
+ // Set the Mode Control Register, so the sensor is waken up from the standby mode (default)
+ i2c.write(PSAdress, modeControlRegister, 2, 1);
+
+ myservo.position(0);
+
+ while (true) {
+
+ i2c.write(PSAdress, PSregadRegister, 2, 1); // Select the registers to read from, no I2C Stop
+ i2c.read(PSAdress, PSReading, 2, 0); // Read data from register
+ PSresult = (int) ((int)PSReading[1] << 8) | PSReading[0];
+
+ char buf[100];
+ sprintf(buf, "%d", PSresult);
+ message.qos = MQTT::QOS0;
+ message.retained = false;
+ message.dup = false;
+ message.payload = (void*)buf;
+ message.payloadlen = strlen(buf)+1;
+ client.publish(topic_pub_proximity2, message);
+
+ // Servo commands
+
+ if (flag == 0)
+ {
+ myservo.position(0);
+
+ }
+
+ else if (flag == 1)
+ {
+ myservo.position(25);
+
+ }
+
+ else if (flag == 2)
+ {
+ myservo.position(-25);
+
+ }
+
+ client.yield(YIELD_TIMEOUT_MS); // Need to call yield API to maintain connection
+ }
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-mqtt.lib Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-mqtt/#7fa219e87b3355e8a6fd281659697fe3a0c87630
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#cf4f12a123c05fcae83fc56d76442015cb8a39e9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jul 13 15:08:13 2022 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_app.json Wed Jul 13 15:08:13 2022 +0000
@@ -0,0 +1,65 @@
+{
+ "config": {
+ "wifi-ssid": {
+ "help": "WiFi SSID",
+ "value": "\"oljko\""
+ },
+ "wifi-password": {
+ "help": "WiFi Password",
+ "value": "\"oljaolja\""
+ }
+ },
+ "target_overrides": {
+ "*": {
+ "platform.stdio-convert-newlines": true
+ },
+ "NUCLEO_L476RG": {
+ "target.network-default-interface-type": "WIFI",
+ "esp8266.tx" : "PC_4",
+ "esp8266.rx" : "PC_5",
+ "esp8266.provide-default" : true,
+ "drivers.uart-serial-rxbuf-size" : 1024,
+ "drivers.uart-serial-txbuf-size" : 1024
+ },
+ "NUCLEO_F746ZG": {
+ "target.network-default-interface-type" : "WIFI",
+ "esp8266.tx" : "D1",
+ "esp8266.rx" : "D0",
+ "esp8266.provide-default" : true,
+ "drivers.uart-serial-rxbuf-size" : 1024,
+ "drivers.uart-serial-txbuf-size" : 1024
+ },
+ "NUCLEO_L4R5ZI": {
+ "target.network-default-interface-type" : "WIFI",
+ "esp8266.tx" : "D1",
+ "esp8266.rx" : "D0",
+ "esp8266.provide-default" : true,
+ "drivers.uart-serial-rxbuf-size" : 1024,
+ "drivers.uart-serial-txbuf-size" : 1024
+ },
+ "NUCLEO_H743ZI2": {
+ "target.network-default-interface-type" : "WIFI",
+ "esp8266.tx" : "D1",
+ "esp8266.rx" : "D0",
+ "esp8266.provide-default" : true,
+ "drivers.uart-serial-rxbuf-size" : 1024,
+ "drivers.uart-serial-txbuf-size" : 1024
+ },
+ "NUCLEO_F103RB": {
+ "target.network-default-interface-type" : "WIFI",
+ "esp8266.tx" : "D8",
+ "esp8266.rx" : "D2",
+ "esp8266.provide-default" : true,
+ "drivers.uart-serial-rxbuf-size" : 1024,
+ "drivers.uart-serial-txbuf-size" : 1024
+ },
+ "NUCLEO_F401RE": {
+ "target.network-default-interface-type" : "WIFI",
+ "esp8266.tx" : "D8",
+ "esp8266.rx" : "D2",
+ "esp8266.provide-default" : true,
+ "drivers.uart-serial-rxbuf-size" : 1024,
+ "drivers.uart-serial-txbuf-size" : 1024
+ }
+ }
+}
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