Rian De Rous
school project
Dependencies: C12832 EthernetInterface LM75B mbed-rtos mbed
Diff: main.cpp
- Revision:
- 0:9aa59e25b651
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Apr 28 15:10:21 2017 +0000
@@ -0,0 +1,341 @@
+#include "mbed.h"
+#include "C12832.h"
+#include "LM75B.h"
+#include "EthernetInterface.h"
+
+
+
+DigitalOut aliveLed(LED1);
+
+PwmOut led(p24);
+PwmOut buzzer(p26);
+LM75B tmp(p28,p27);
+C12832 lcd(p5, p7, p6, p8, p11);
+AnalogIn pot(p20);
+Serial pc(USBTX,USBRX);
+TCPSocketServer server;
+
+InterruptIn joyStickUp(p12);
+InterruptIn joyStickDown(p15);
+DigitalIn joyStickCenter(p14);
+DigitalIn joyStickLeft(p13);
+DigitalIn joyStickRight(p16);
+
+EthernetInterface eth;
+
+bool stop;
+char temp [50];
+char ids[20];
+char CRC;
+char destination[15];
+
+float currentTemperature;
+char potentiometer;
+
+unsigned char targetId;
+
+const unsigned int id = 107; //ip address = 192.168.1.107
+
+
+bool checkCRC()
+{
+ pc.printf("check CRC: CRC correct\n\r");
+ return true;
+}
+
+char calcCRC()
+{
+ pc.printf("calculate crc\n\r");
+ return 0xab;
+}
+
+void sendBuffer(int id, char* buffer,int length)
+{
+ pc.printf("send buffer to 192.168.1.%3d with a length of %2d\n\r",id,length);
+ if(!stop) {
+ sprintf("192.168.1.%3d",destination, 100+targetId);
+ TCPSocketConnection client2;
+ client2.connect(destination,4000);
+ client2.send_all(buffer, length);
+ }
+}
+
+/*-----------------------------------------------------------------------------
+* interrupt routines for joystick up, down & center
+*-----------------------------------------------------------------------------*/
+void joyStickUpISR(void)
+{
+ aliveLed=!aliveLed;
+ if(targetId<16) targetId++;
+ //pc.printf("Next Node: 192.168.1.%3d",100+targetId);
+}
+
+void joyStickDownISR(void)
+{
+ aliveLed=!aliveLed;
+ if(targetId>0) targetId--;
+ //pc.printf("Next Node: 192.168.1.%3d",100+targetId);
+}
+
+void joyStickEnter()
+{
+ char firstFrame[11];
+ firstFrame[0]=0xAA;
+ firstFrame[1]=0x55;
+ firstFrame[2]=0;
+ firstFrame[3]=targetId;
+ firstFrame[4]=pot.read();
+ firstFrame[5]=107;
+ // int a, b;
+ // tmp.readRaw(&a,&b);
+ firstFrame[6]=9;
+ firstFrame[7]=8;
+ firstFrame[8]=calcCRC();
+ firstFrame[9]=0xaa;
+ firstFrame[10]=0x55;
+
+ stop=false;
+
+ aliveLed=!aliveLed;
+
+ char buffer [16];
+
+ //sprintf (buffer, "192.168.1.%03d", 100+targetId, 16);
+ pc.printf("sending first frame to 192.1681.100 ");
+ pc.printf(buffer);
+ pc.printf("\n\r");
+ TCPSocketConnection client2;
+
+ // pc.printf("destination: %s", buffer);
+ while (client2.connect("192.168.1.100", 4000) < 0) {
+ pc.printf("Unable to connect to (%s) on port (%d)\n\r", "192.168.1.100", 4000);
+ }
+ char hello[] = "Hello World";
+ int succes = client2.send_all(hello,sizeof(hello)-1);
+ //int succes = client2.send_all(firstFrame,sizeof(firstFrame));
+
+ if(succes>0) {
+ pc.printf("%d bytes transmitted succesfully\n\r",succes);
+ } else {
+ pc.printf("ERROR SENDING FIRST FRAME\n\r");
+ }
+ pc.printf("\n\r");
+ client2.close();
+}
+
+/*------------------------------------------------------------------------------
+ play the first n notes
+------------------------------------------------------------------------------*/
+
+double frequencies[] = { 110,110,110,98,130,110,98,130,110,165,165,165,175,130,104,98,130};
+int length[] = { 480,480,480,360,120,480,360,120,960,480,480,480,360,120,480,360,120};
+char delay[] = { 100,100,100,075,100,100,075,100,100,100,100,100,075,100,100,075,100};
+
+void playTune(int n)
+{
+ pc.printf("play %d notes from tune\n\r", n);
+ for(int i = 0; i<n; i++) {
+ buzzer.write(0.5);
+ int period = 1000000/frequencies[i];
+ buzzer.period_us(period);
+ wait_ms(length[i]);
+ buzzer.write(0);
+ wait_ms(delay[i]);
+ }
+}
+
+/*------------------------------------------------------------------------------
+/ print ip address, target ip, temperature and potentiometer value on LCD
+------------------------------------------------------------------------------*/
+
+void printLCD(void)
+{
+ // pc.printf("update lcd\n\r");
+ lcd.locate(0,8);
+ lcd.printf("target = 192.168.1.%3d",100+targetId);
+ lcd.locate(0,23);
+ potentiometer = (char) 255*pot.read();
+ // pc.printf("potvalue %d \r\n" , potentiometer);
+ lcd.printf("pot is = %2d", potentiometer);
+
+}
+
+
+/*-----------------------------------------------------------------------------
+/init routine
+/
+/ UART
+/ -set the baudrate to 115200
+/
+/ Ethernet connection
+/ set up ethernet connection with static ip 10.182.34.107 and make connection
+/
+/ LCD
+/ clear LCD
+/ run printLCD()
+/
+/ Add Interrupt to joystick up, down & center
+/ PWM: init PWM for (R)G(B) led.
+/ Tune: plays 3 notes from tune when finished
+------------------------------------------------------------------------------*/
+
+
+void init(void)
+{
+ pc.baud(9600);
+ pc.printf("\n\n\r projectlab Rian De Rous \n\r\n");
+ //setup an eternet connection. IP ADDRESS = 192.168.1.107
+ //int result = eth.init("192.168.1.107","255.255.255.0","192.168.1.1");
+ pc.printf("initialisatie ethernet connectie \n\r");
+ // eth.init("192.168.1.107","255.255.255.0","192.168.1.1");
+ eth.init("192.168.1.107", "255.255.255.0", "192.168.1.1");
+ //pc.printf("IP Address is %s \n\r", eth.getIPAddress());
+ pc.printf("try to connect\r\n");
+
+
+
+ if(eth.connect()==0) {
+ pc.printf("connectie geslaagd\r\n");
+ } else {
+ pc.printf("connectie gefaald\r\n");
+ }
+
+
+ server.bind(4000);
+ server.listen();
+
+ pc.printf("initialisatie lcd\n\r");
+ //lcd initialisation
+ lcd.cls(); // good practice to clear lcd on startup
+ lcd.locate(0,0);
+ lcd.printf("IP Address is %s \n\r", eth.getIPAddress());// print ip address to first line on lcd
+
+
+ //add interrupt routines
+ pc.printf("initialisatie interrupts\n\r");
+ joyStickUp.rise(&joyStickUpISR); // interrupt on joystick up --> jump to joyStickUpISR on Interrupt
+ joyStickDown.rise(&joyStickDownISR); // interrupt on joystick down --> jump to joyStickDownISR on Interrupt
+
+ pc.printf("initialisatie tcp server\n\r");
+ server.bind(4000);
+ server.listen();
+
+ pc.printf("initialisatie led");
+ led.period_ms(1); // 1kHz pwm Out frequency to dim green led in RGB led.
+ led.write(0.95);
+
+ pc.printf("play tune!\n\r");
+ playTune(0);
+
+}
+
+float tmpToFloat(char a, char b)
+{
+ pc.printf("convert 2 byte temperature value to a float");
+ return float((a<<8)|b) / 256.0 ;
+}
+
+float averageTemperature(int n, char * temp)
+{
+ pc.printf("calculate average temperature\n\r");
+ float avgtemp;
+
+ for(int i=0; i<n; i++) {
+ avgtemp+=tmpToFloat(temp[3*i],temp[3*i+1]);
+
+ }
+ avgtemp=avgtemp/n;
+ lcd.locate(0,16);
+ lcd.printf("average temp is = %.2f\n",avgtemp);
+ return avgtemp;
+}
+
+int main()
+{
+ init();
+ while (true) {
+
+ printLCD();
+ if(joyStickCenter.read()==1) {
+ joyStickEnter();
+ wait(0.2);
+ }
+ if(joyStickLeft.read()==1) {
+ playTune(10);
+ wait(0.2);
+ }
+ if(joyStickRight.read()==1) {
+ lcd.locate(64,23);
+ lcd.printf("temp is %.2f°C\n",tmp.read());
+ wait(0.2);
+ }
+
+ TCPSocketConnection client;
+ server.accept(client);
+ client.set_blocking(true, 15000); // Timeout after (1.5)s
+ // if(client.get_address()!=null) {
+ // printf("Connection from: %s \r\n", client.get_address());
+ // }
+ char buffer[256];
+ while (true) {
+ int n = client.receive(buffer, sizeof(buffer));
+ if (n <= 0) break;
+
+ int count=0;
+ //check if frame starts with 0xAA55
+
+ if(buffer[0]==0xaa && buffer[1]==0x55) {
+
+ count = 5;
+ //extract temperatures from buffer
+ for(int i = 0; i<3* buffer[2]; i++, count++) {
+ temp[i]=buffer[count];
+ }
+ //extract CRC checksum from buffer
+ count++;
+ CRC = buffer[count];
+ count++;
+
+ int i = 6;
+ stop = false;
+ while(stop == false && i<(buffer[2]*3+6)) {
+ stop =true;
+ i+=3;
+ }
+
+ //check if packet is (in)valid
+ if((buffer[count]==0x55 && buffer[count+1]==0xAA)) {
+
+ led.write(buffer[4]);
+ playTune(buffer[2]);
+
+ averageTemperature(buffer[2],temp);
+
+ if(!stop) {
+ buffer[2]++;
+ buffer[3]=targetId;
+ buffer[4]=pot.read();
+ count++;
+
+ buffer[count-1]=id;
+ int a, b;
+ tmp.readRaw(&a,&b);
+ buffer[count]= a; // nog om te zetten met complement
+ buffer[count+1]=b;
+ buffer[count+2]=calcCRC();
+ buffer[count+3]=0x55;
+ buffer[count+4]=0xAA;
+ sendBuffer(targetId, buffer,count +4);
+ if(!checkCRC()) {
+ //correct packet
+ }
+ }
+
+ }
+ stop = false;
+ }
+ client.close();
+ }
+ }
+
+}