Nicholas Outram
Demo of the sample LCD class, BMP280 Sensor and network with power on self test. Requires a network connectionb
Dependencies: BMP280 TextLCD BME280
Revision 6:9a95a39d1cce, committed 2018-11-24
- Comitter:
- noutram
- Date:
- Sat Nov 24 08:44:15 2018 +0000
- Parent:
- 5:5fd848b23b3e
- Commit message:
- simplify;
Changed in this revision
--- a/ELEC350-Hardware.lib Sat Nov 24 08:20:16 2018 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -https://os.mbed.com/teams/University-of-Plymouth-Stage-2-and-3/code/ELEC350-Coursework-2017/#df979097cc71
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Networkbits.cpp Sat Nov 24 08:44:15 2018 +0000
@@ -0,0 +1,68 @@
+#include "sample_hardware.hpp"
+#include "Networkbits.hpp"
+
+//Network thread - responsible for listening for connectinos and responding with updated tempature values
+void networktest()
+{
+ //This only runs when BOTH switches are pressed down
+ if ((SW1 == 0) || (SW2 == 0)) return;
+
+ lcd.cls();
+ lcd.printf("Basic HTTP server example\n");
+
+ //Configure an ethernet connection
+ EthernetInterface eth;
+ eth.set_network(IP, NETMASK, GATEWAY);
+ eth.connect();
+ lcd.printf("The target IP address is '%s'\n", eth.get_ip_address());
+
+ //Now setup a web server
+ TCPServer srv; //TCP/IP Server
+ TCPSocket clt_sock; //Socket for communication
+ SocketAddress clt_addr; //Address of incoming connection
+
+ /* Open the server on ethernet stack */
+ srv.open(ð);
+
+ /* Bind the HTTP port (TCP 80) to the server */
+ srv.bind(eth.get_ip_address(), 80);
+
+ /* Can handle 5 simultaneous connections */
+ srv.listen(5);
+
+ //KEEP RESPONDING WHILE THE SWITCHES ARE PRESSED
+ while ((SW1 == 1) && (SW2 == 1)) {
+ using namespace std;
+ lcd.cls();
+ lcd.printf("Open 10.0.0.1 in a browser\n");
+
+ //Block and wait on an incoming connection
+ srv.accept(&clt_sock, &clt_addr);
+ printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
+
+ //Uses a C++ string to make it easier to concatinate
+ string response;
+ //This is a C string
+ char ldr_str[64];
+
+ //Read the temperature value - note that getParameters() is thread safe
+ float temp = sensor.getTemperature();
+
+ //Convert to a C String
+ sprintf(ldr_str, "%5.3f", temp );
+ printf("LDR: %5.3f\n\r", temp);
+
+ //Build the C++ string response
+ response = HTTP_MESSAGE_BODY1;
+ response += ldr_str;
+ response += HTTP_MESSAGE_BODY2;
+
+ //Send static HTML response (as a C string)
+ clt_sock.send(response.c_str(), response.size()+6);
+ }
+
+ printf("Release BOTH switches\n");
+ lcd.printf("Release BOTH switches\n");
+ while ((SW1 != 0) && (SW2 != 0));
+ wait(0.5); //debounce
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Networkbits.hpp Sat Nov 24 08:44:15 2018 +0000 @@ -0,0 +1,38 @@ +#ifndef MBED_NETWORKBITS_H +#define MBED_NETWORKBITS_H + +#include "mbed.h" +#include "EthernetInterface.h" +#include "TCPServer.h" +#include "TCPSocket.h" +#include <iostream> +#include <string> + + +#define HTTP_STATUS_LINE "HTTP/1.0 200 OK" +#define HTTP_HEADER_FIELDS "Content-Type: text/html; charset=utf-8" +#define HTTP_MESSAGE_BODY1 "" \ +"<html>" "\r\n" \ +" <body style=\"display:flex;text-align:center\">" "\r\n" \ +" <div style=\"margin:auto\">" "\r\n" \ +" <h1>Hello World</h1>" "\r\n" \ +" <p>The temperature is " + +#define HTTP_MESSAGE_BODY2 "" \ + "</p>" "\r\n" \ +" </div>" "\r\n" \ +" </body>" "\r\n" \ +"</html>" + +#define HTTP_RESPONSE HTTP_STATUS_LINE "\r\n" \ + HTTP_HEADER_FIELDS "\r\n" \ + "\r\n" \ + HTTP_MESSAGE_BODY "\r\n" + +#define IP "10.0.0.10" +#define NETMASK "255.0.0.0" +#define GATEWAY "10.0.0.1" + +extern void networktest(); + +#endif \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sample_hardware.cpp Sat Nov 24 08:44:15 2018 +0000
@@ -0,0 +1,107 @@
+#include "mbed.h"
+#include "sample_hardware.hpp"
+#include "Networkbits.hpp"
+
+#define RED_DONE 1
+#define YELLOW_DONE 2
+
+//Digital outputs
+DigitalOut onBoardLED(LED1);
+DigitalOut redLED(PE_15);
+DigitalOut yellowLED(PB_10);
+DigitalOut greenLED(PB_11);
+
+//Inputs
+DigitalIn onBoardSwitch(USER_BUTTON);
+DigitalIn SW1(PE_12);
+DigitalIn SW2(PE_14);
+//Serial pc(USBTX, USBRX);
+AnalogIn adcIn(PA_0);
+
+//Environmental Sensor driver
+#ifdef BME
+BME280 sensor(D14, D15);
+#else
+BMP280 sensor(D14, D15);
+#endif
+
+//LCD Driver (provided via mbed repository)
+//RS D9
+//E D8
+//D7,6,4,2 are the 4 bit for d4-7
+TextLCD lcd(D9, D8, D7, D6, D4, D2); // rs, e, d4-d7
+
+//SD Card
+SDBlockDevice sd(PB_5, D12, D13, D10); // mosi, miso, sclk, cs
+
+//POWER ON SELF TEST
+void post()
+{
+ //POWER ON TEST (POT)
+ puts("**********STARTING POWER ON SELF TEST (POST)**********");
+
+ //Test LEDs
+ puts("ALL LEDs should be blinking");
+ for (unsigned int n=0; n<10; n++) {
+ redLED = 1;
+ yellowLED = 1;
+ greenLED = 1;
+ wait(0.05);
+ redLED = 0;
+ yellowLED = 0;
+ greenLED = 0;
+ wait(0.05);
+ }
+
+ //Output the switch states (hold them down to test)
+ printf("SW1: %d\tSW2: %d\n\r", SW1.read(), SW2.read());
+ printf("USER: %d\n\r", onBoardSwitch.read());
+
+ //Output the ADC
+ printf("ADC: %f\n\r", adcIn.read());
+
+ //Read Sensors (I2C)
+ float temp = sensor.getTemperature();
+ float pressure = sensor.getPressure();
+ #ifdef BME
+ float humidity = sensor.getHumidity();
+ #endif
+
+ //Display in PuTTY
+ printf("Temperature: %5.1f\n", temp);
+ printf("Pressure: %5.1f\n", pressure);
+ #ifdef BME
+ printf("Pressure: %5.1f\n", humidity);
+ #endif
+
+ //Display on LCD
+ redLED = 1;
+ lcd.cls();
+ lcd.printf("LCD TEST...");
+ wait(0.5);
+ redLED = 0;
+
+ //Network test (if BOTH switches are held down)
+ networktest();
+
+ puts("**********POST END**********");
+
+}
+
+void errorCode(ELEC350_ERROR_CODE err)
+{
+ switch (err) {
+ case OK:
+ greenLED = 1;
+ wait(1.0);
+ greenLED = 0;
+ return;
+ case FATAL:
+ while(1) {
+ redLED = 1;
+ wait(0.1);
+ redLED = 0;
+ wait(0.1);
+ }
+ };
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sample_hardware.hpp Sat Nov 24 08:44:15 2018 +0000
@@ -0,0 +1,39 @@
+#ifndef __sample_hardware__
+#define __sample_hardware__
+
+//#define BME
+#ifdef BME
+#include "BME280.h"
+#else
+#include "BMP280.h"
+#endif
+#include "TextLCD.h"
+#include "SDBlockDevice.h"
+#include "FATFileSystem.h"
+
+enum ELEC350_ERROR_CODE {OK, FATAL};
+
+extern DigitalOut onBoardLED;
+extern DigitalOut redLED;
+extern DigitalOut yellowLED;
+extern DigitalOut greenLED;
+
+extern DigitalIn onBoardSwitch;
+extern DigitalIn SW1;
+extern DigitalIn SW2;
+//extern Serial pc;
+extern AnalogIn adcIn;
+
+#ifdef BME
+extern BME280 sensor;
+#else
+extern BMP280 sensor;
+#endif
+
+extern TextLCD lcd;
+extern SDBlockDevice sd;
+
+extern void post();
+extern void errorCode(ELEC350_ERROR_CODE err);
+
+#endif
\ No newline at end of file