An mbed health monitor
Dependencies: 4DGL-uLCD-SE GP-20U7 PinDetect RPCInterface mbed
main.cpp
- Committer:
- dnergui3
- Date:
- 2016-12-15
- Revision:
- 1:ad5378dcef79
- Parent:
- 0:0de3867984e5
File content as of revision 1:ad5378dcef79:
// ESP8266 Static page WEB server to control Mbed #include "mbed.h" #include "LSM9DS1.h" #include "GPS.h" #include "GPSstuff.h" #include <string> #include <iostream> Serial pc(USBTX, USBRX); Serial esp(p28, p27); // tx, rx GPS gps(p13, p14); GPSstuff object; LSM9DS1 IMU(p9, p10, 0xD6, 0x3C); char ssid[32] = "AndroidAP"; // enter WiFi router ssid inside the quotes char pwd [32] = "91d4f66f56c1"; // enter WiFi router passusrname inside the quotes char Steps[10]; char Distance_travel[10]; char Calories_burned[10]; float a, ax, ay, az; //acceleration int i=0, n=0; bool flag=0; float buffer[4], d, totalDistance=0, threshold=1.1, calories=0, steps=0; // things for sending/receiving data over serial volatile int tx_in=0; volatile int tx_out=0; volatile int rx_in=0; volatile int rx_out=0; const int buffer_size = 4095; char tx_buffer[buffer_size+1]; char rx_buffer[buffer_size+1]; void Tx_interrupt(); void Rx_interrupt(); void send_line(); void read_line(); int DataRX; int update; int count; char cmdbuff[1024]; char replybuff[4096]; char webdata[4096]; // This may need to be bigger depending on WEB browser used char webbuff[4096]; // Currently using 1986 characters, Increase this if more web page data added char timebuf[30]; void SendCMD(),getreply(),ReadWebData(),startserver(); void gettime(),setRTC(), getsteps(), getdistance(); char rx_line[1024]; int port =80; // set server port int SERVtimeout =5; // set server timeout in seconds in case link breaks. struct tm t; // manual set RTC values int minute =00; // 0-59 int hour =12; // 2-23 int dayofmonth =26; // 1-31 int month =8; // 1-12 int year =15; // last 2 digits int main() { pc.baud(9600); esp.baud(9600); // Setup a serial interrupt function to receive data esp.attach(&Rx_interrupt, Serial::RxIrq); // Setup a serial interrupt function to transmit data esp.attach(&Tx_interrupt, Serial::TxIrq); if (time(NULL) < 1420070400) { setRTC(); } startserver(); DataRX=0; ReadWebData(); IMU.begin(); if (!IMU.begin()) { pc.printf("Failed to communicate with LSM9DS1.\n"); } IMU.calibrate(1); while(1) { while(n<26){ getsteps(); wait(0.2); n++; } //if(DataRX==1) { ReadWebData(); esp.attach(&Rx_interrupt, Serial::RxIrq); // get new values gettime(); getdistance(); // send new values sprintf(cmdbuff, "count,time,steps,distance,calories=%d,\"%s\",\"%s\",\"%s\",\"%s\"\r\n",count,timebuf,Steps,Distance_travel, Calories_burned); // sprintf(cmdbuff, "count,time,steps,distance= %d,\"%s\",\"%s\",\"%s\"\r\n",count,timebuf,Steps,Distance_travel); SendCMD(); getreply(); n=0; } } // Reads and processes GET and POST web data void ReadWebData() { wait_ms(200); esp.attach(NULL,Serial::RxIrq); DataRX=0; memset(webdata, '\0', sizeof(webdata)); strcpy(webdata, rx_buffer); memset(rx_buffer, '\0', sizeof(rx_buffer)); rx_in = 0; rx_out = 0; // check web data for form information if( strstr(webdata, "POST") != NULL ) { // set update flag if POST request update=1; } if( strstr(webdata, "GET") != NULL && strstr(webdata, "favicon") == NULL ) { // set update flag for GET request but do not want to update for favicon requests update=1; } } // Starts webserver void startserver() { gettime(); getsteps(); getdistance(); pc.printf("++++++++++ Resetting ESP ++++++++++\r\n"); strcpy(cmdbuff,"node.restart()\r\n"); SendCMD(); wait(2); getreply(); pc.printf("\n++++++++++ Starting Server ++++++++++\r\n> "); // initial values sprintf(cmdbuff, "count,time,steps,distance,calories=%d,\"%s\",\"%s\",\"%s\",\"%s\"\r\n",count,timebuf,Steps,Distance_travel, Calories_burned); SendCMD(); getreply(); wait(0.5); //create server sprintf(cmdbuff, "srv=net.createServer(net.TCP,%d)\r\n",SERVtimeout); SendCMD(); getreply(); wait(0.5); strcpy(cmdbuff,"srv:listen(80,function(conn)\r\n"); SendCMD(); getreply(); wait(0.3); strcpy(cmdbuff,"conn:on(\"receive\",function(conn,payload) \r\n"); SendCMD(); getreply(); wait(0.3); //print data to mbed strcpy(cmdbuff,"print(payload)\r\n"); SendCMD(); getreply(); wait(0.2); //web page data strcpy(cmdbuff,"conn:send('<!DOCTYPE html><html><body><h1>Mbed IoT Web Controller</h1>')\r\n"); SendCMD(); getreply(); wait(0.4); strcpy(cmdbuff,"conn:send('<br>Last hit (based on mbed RTC time): '..time..'<br><hr>')\r\n"); SendCMD(); getreply(); wait(0.4); strcpy(cmdbuff,"conn:send('Steps: '..steps..' <br>Distance: '..distance..' km<br><hr>')\r\n"); SendCMD(); getreply(); wait(0.3); strcpy(cmdbuff,"conn:send('Calories: '..calories..' kcal<br><hr>')\r\n"); SendCMD(); getreply(); wait(0.3); strcpy(cmdbuff,"conn:send('<form method=\"POST\"')\r\n"); SendCMD(); getreply(); wait(0.3); strcpy(cmdbuff,"conn:send('<p><input type=\"submit\" value=\"Update\"></form>')\r\n"); SendCMD(); getreply(); wait(0.3); // end web page data strcpy(cmdbuff, "conn:on(\"sent\",function(conn) conn:close() end)\r\n"); // close current connection SendCMD(); getreply(); wait(0.3); strcpy(cmdbuff, "end)\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff, "end)\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff, "tmr.alarm(0, 1000, 1, function()\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff, "if wifi.sta.getip() == nil then\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff, "print(\"Connecting to AP...\\n\")\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff, "else\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff, "ip, nm, gw=wifi.sta.getip()\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff,"print(\"IP Address: \",ip)\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff,"tmr.stop(0)\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff,"end\r\n"); SendCMD(); getreply(); wait(0.2); strcpy(cmdbuff,"end)\r\n"); SendCMD(); getreply(); wait(0.2); pc.printf("\n\n++++++++++ Ready ++++++++++\r\n\n"); } // ESP Command data send void SendCMD() { int i; char temp_char; bool empty; i = 0; // Start Critical Section - don't interrupt while changing global buffer variables NVIC_DisableIRQ(UART1_IRQn); empty = (tx_in == tx_out); while ((i==0) || (cmdbuff[i-1] != '\n')) { // Wait if buffer full if (((tx_in + 1) % buffer_size) == tx_out) { // End Critical Section - need to let interrupt routine empty buffer by sending NVIC_EnableIRQ(UART1_IRQn); while (((tx_in + 1) % buffer_size) == tx_out) { } // Start Critical Section - don't interrupt while changing global buffer variables NVIC_DisableIRQ(UART1_IRQn); } tx_buffer[tx_in] = cmdbuff[i]; i++; tx_in = (tx_in + 1) % buffer_size; } if (esp.writeable() && (empty)) { temp_char = tx_buffer[tx_out]; tx_out = (tx_out + 1) % buffer_size; // Send first character to start tx interrupts, if stopped esp.putc(temp_char); } // End Critical Section NVIC_EnableIRQ(UART1_IRQn); return; } // Get Command and ESP status replies void getreply() { read_line(); sscanf(rx_line,replybuff); } // Read a line from the large rx buffer from rx interrupt routine void read_line() { int i; i = 0; // Start Critical Section - don't interrupt while changing global buffer variables NVIC_DisableIRQ(UART1_IRQn); // Loop reading rx buffer characters until end of line character while ((i==0) || (rx_line[i-1] != '\r')) { // Wait if buffer empty if (rx_in == rx_out) { // End Critical Section - need to allow rx interrupt to get new characters for buffer NVIC_EnableIRQ(UART1_IRQn); while (rx_in == rx_out) { } // Start Critical Section - don't interrupt while changing global buffer variables NVIC_DisableIRQ(UART1_IRQn); } rx_line[i] = rx_buffer[rx_out]; i++; rx_out = (rx_out + 1) % buffer_size; } // End Critical Section NVIC_EnableIRQ(UART1_IRQn); rx_line[i-1] = 0; return; } // Interupt Routine to read in data from serial port void Rx_interrupt() { DataRX=1; // Loop just in case more than one character is in UART's receive FIFO buffer // Stop if buffer full while ((esp.readable()) && (((rx_in + 1) % buffer_size) != rx_out)) { rx_buffer[rx_in] = esp.getc(); // Uncomment to Echo to USB serial to watch data flow pc.putc(rx_buffer[rx_in]); rx_in = (rx_in + 1) % buffer_size; } return; } // Interupt Routine to write out data to serial port void Tx_interrupt() { // Loop to fill more than one character in UART's transmit FIFO buffer // Stop if buffer empty while ((esp.writeable()) && (tx_in != tx_out)) { esp.putc(tx_buffer[tx_out]); tx_out = (tx_out + 1) % buffer_size; } return; } void gettime() { time_t seconds = time(NULL); strftime(timebuf,50,"%H:%M:%S %a %d %b %y", localtime(&seconds)); } void setRTC() { t.tm_sec = (0); // 0-59 t.tm_min = (minute); // 0-59 t.tm_hour = (hour); // 0-23 t.tm_mday = (dayofmonth); // 1-31 t.tm_mon = (month-1); // 0-11 "0" = Jan, -1 added for Mbed RCT clock format t.tm_year = ((year)+100); // year since 1900, current DCF year + 100 + 1900 = correct year set_time(mktime(&t)); // set RTC clock } // Analog in example void getsteps(){ while(!IMU.accelAvailable()); IMU.readAccel(); ax=IMU.calcAccel(IMU.ax); ay=IMU.calcAccel(IMU.ay); az=IMU.calcAccel(IMU.az); a=sqrt(pow(ax, 2) + pow(ay, 2) + pow(az, 2)); if (a>=threshold && flag==0){ // if it crosses threshold increment step by one and raise the flag steps+=1; flag=1; calories=steps/20; pc.printf("steps: %i\n", steps); } else if (a < threshold && flag==1){ // if flag is raised and threshold is not crossed , put that flag down. flag=0; } sprintf(Steps,"%2.3f",steps); sprintf(Calories_burned, "%2.3f", calories); } void getdistance(){ if (i==0){ //initial reading made by the GPS gps.sample(); buffer[i]= gps.longitude; buffer[i+1] = gps.latitude; i=i+2; if (buffer[2]==0 && buffer[3]==0){ //second reading made by GPS gps.sample(); buffer[2]= gps.longitude; buffer[3] = gps.latitude; i=2; } } else if (i==2){ float lat1d = buffer[0]; float lon1d = buffer[1]; float lat2d = buffer[2]; float lon2d = buffer[3]; d = object.distanceEarth(lat1d, lon1d, lat2d, lon2d); lat1d = buffer[2]; lon1d = buffer[3]; i=0; } totalDistance+=d; sprintf(Distance_travel, "%2.3f", totalDistance); }