CPS-Lab1 / Mbed 2 deprecated Lab_10

Transmit pressure/temperature reading once per hour from xDot to iupivot server

Dependencies:   ATParser MPL3115A2 mbed

main.cpp@1:b672c24629d5, 2018-04-04 (annotated)

Committer:
csinders
Date:
Wed Apr 04 14:55:38 2018 +0000
Revision:
1:b672c24629d5
Parent:
0:50820e1648aa
Child:
2:9af94ceb9d37
Changed name to correct lab number.; Was unable to connect to network to test if input is correct.  Unsure of what size to make temperature and pressure buffer.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
csinders 0:50820e1648aa 1 #include "mbed.h"
csinders 0:50820e1648aa 2 #include "MPL3115A2.h"
csinders 1:b672c24629d5 3 #include "string.h"
csinders 0:50820e1648aa 4 MPL3115A2 pressure_sensor(PB_7,PB_6,0x60);
csinders 0:50820e1648aa 5 Serial pc(SERIAL_TX, SERIAL_RX, 115200);
csinders 0:50820e1648aa 6 Serial device(PA_9, PA_10, 115200); // tx, rx
csinders 1:b672c24629d5 7 DigitalOut myled(LED1);
csinders 0:50820e1648aa 8
csinders 1:b672c24629d5 9 /* Checks to see if the xDot has a buffered message OK to
csinders 1:b672c24629d5 10 confirm that operation has succeeded
csinders 1:b672c24629d5 11 */
csinders 1:b672c24629d5 12 int confirmOK() {
csinders 1:b672c24629d5 13 char buf[20];
csinders 1:b672c24629d5 14 int i = 0;
csinders 1:b672c24629d5 15 while (device.readable()) {
csinders 1:b672c24629d5 16 buf[i] = device.getc();
csinders 1:b672c24629d5 17 if (i > 20) {
csinders 1:b672c24629d5 18 return 0;
csinders 1:b672c24629d5 19 }
csinders 1:b672c24629d5 20 i++;
csinders 1:b672c24629d5 21 }
csinders 1:b672c24629d5 22 return strncmp("OK",buf,2);
csinders 1:b672c24629d5 23 }
csinders 1:b672c24629d5 24 /* Sends a message to the xDot
csinders 1:b672c24629d5 25 Messages are expected to end in \n so that an OK confirmation will be
csinders 1:b672c24629d5 26 recieved
csinders 1:b672c24629d5 27 */
csinders 1:b672c24629d5 28 int sendAtMessage(char * message) {
csinders 1:b672c24629d5 29 while (*message) {
csinders 1:b672c24629d5 30 device.putc(*message);
csinders 1:b672c24629d5 31 message++;
csinders 1:b672c24629d5 32 }
csinders 1:b672c24629d5 33 return confirmOK();
csinders 1:b672c24629d5 34 }
csinders 1:b672c24629d5 35
csinders 1:b672c24629d5 36 /*
csinders 1:b672c24629d5 37 Send a message to the xDot without checking for acknowledge
csinders 1:b672c24629d5 38 */
csinders 1:b672c24629d5 39 void sendAtMessageNACK(char * message) {
csinders 1:b672c24629d5 40 while (*message) {
csinders 1:b672c24629d5 41 device.putc(*message);
csinders 1:b672c24629d5 42 message++;
csinders 1:b672c24629d5 43 }
csinders 1:b672c24629d5 44 }
csinders 1:b672c24629d5 45 int main() {
csinders 1:b672c24629d5 46
csinders 1:b672c24629d5 47 pc.printf("Starting program\n\r");
csinders 1:b672c24629d5 48
csinders 1:b672c24629d5 49 //Try to connect xDot to network
csinders 1:b672c24629d5 50 // Provice network name
csinders 1:b672c24629d5 51 char networkName[] = "AT+NI=1, MTCDT-19400691\n";
csinders 1:b672c24629d5 52 sendAtMessage(networkName);
csinders 1:b672c24629d5 53 //Provide network passphrase
csinders 1:b672c24629d5 54 char networkPassphrase[] = "AT+NK=1,MTCDT-19400691\n";
csinders 1:b672c24629d5 55 sendAtMessage(networkPassphrase);
csinders 1:b672c24629d5 56 //Set the frequency sub band
csinders 1:b672c24629d5 57 char frequencySubBand[] = "AT+FSB=1\n";
csinders 1:b672c24629d5 58 sendAtMessage(frequencySubBand);
csinders 1:b672c24629d5 59 //Join the network
csinders 1:b672c24629d5 60 char joinNetwork[] = "AT+JOIN\n"; // Unable to join network atm.
csinders 1:b672c24629d5 61 if (!sendAtMessage(joinNetwork)) {
csinders 1:b672c24629d5 62 pc.printf("Error, unable to connect to network");
csinders 1:b672c24629d5 63 }
csinders 1:b672c24629d5 64 wait_ms(500);
csinders 1:b672c24629d5 65
csinders 1:b672c24629d5 66 //When an s is read from the serial pc,
csinders 1:b672c24629d5 67 // read the current pressure/temperature from the I2C pressure sensor
csinders 1:b672c24629d5 68 // and send it to the MQTT server pivot.iuiot
csinders 1:b672c24629d5 69
csinders 1:b672c24629d5 70 //Unsure of what size to set Buffer so that it doesn't go over
csinders 1:b672c24629d5 71 //when trying to send a message
csinders 1:b672c24629d5 72 while(1) {
csinders 1:b672c24629d5 73 if (pc.readable()) {
csinders 1:b672c24629d5 74 if (pc.getc() == 's') {
csinders 1:b672c24629d5 75 double temp = pressure_sensor.getTemperature();
csinders 1:b672c24629d5 76 char tempBuf[6];
csinders 1:b672c24629d5 77 double pres = pressure_sensor.getPressure();
csinders 1:b672c24629d5 78 char presBuf[7];
csinders 1:b672c24629d5 79 pc.printf("Current temp is %f\n\r",temp);
csinders 1:b672c24629d5 80 pc.printf("Current pres is %f\n\r",pres);
csinders 1:b672c24629d5 81 sprintf(tempBuf, "%2.2f",temp);
csinders 1:b672c24629d5 82 sprintf(presBuf, "%4.1f",pres);
csinders 1:b672c24629d5 83 pc.printf("After convert with sprintf temp = %s\n\r",tempBuf);
csinders 1:b672c24629d5 84 pc.printf("After convert with sprintf pres = %s\n\r",presBuf);
csinders 1:b672c24629d5 85
csinders 1:b672c24629d5 86 }
csinders 1:b672c24629d5 87 }
csinders 1:b672c24629d5 88 }
csinders 1:b672c24629d5 89
csinders 1:b672c24629d5 90 /*
csinders 0:50820e1648aa 91 while(1) {
csinders 0:50820e1648aa 92 if(pc.readable()) {
csinders 0:50820e1648aa 93 device.putc(pc.getc());
csinders 0:50820e1648aa 94 myled = !myled;
csinders 0:50820e1648aa 95 }
csinders 0:50820e1648aa 96 if(device.readable()) {
csinders 0:50820e1648aa 97 pc.putc(device.getc());
csinders 0:50820e1648aa 98 myled = !myled;
csinders 0:50820e1648aa 99 }
csinders 0:50820e1648aa 100 }
csinders 1:b672c24629d5 101 */
csinders 0:50820e1648aa 102 }