Srdjan Veljkovic / Mbed 2 deprecated Avnet_ATT_Cellular_Pubnub

Pubnub demo for AT&T IoT Starter Kit. Functionally similar to the Flow demo.

Dependencies:   FXOS8700CQ MODSERIAL mbed

http://pubnub.github.io/slides/workshop/pictures/broadcast.png

Pubnub demo for AT&T IoT Starter Kit

This demo is functionally similar to the Flow demo, so you can find general information here: https://developer.mbed.org/users/JMF/code/Avnet_ATT_Cellular_IOT/.

The only difference is that we use Pubnub to publish the measurements and subscribe to receiving the instructions to set the LED.

Settings

Pubnub related settings are:

Pubnub settings in `config_me.h`

PUBNUB_SUBSCRIBE_KEY
PUBNUB_PUBLISH_KEY
PUBNUB_CHANNEL

All are documented in their respective comments.

Pubnub context class

Similar to Pubnub SDKs, we provide a Pubnub context class. It is defined in pubnub.h header file and implemented in pubnub.cpp.

It provides only the fundamental "publish" and "subscribe" methods. They are documented in the header file.

This class is reusable in other code (it is not specific to this demo), it has a very narrow interface to the AT&T IoT cellular modem code. For example of use, you can look at the main() (in main.c).

Sample of published data

Published message w/measurement data

{"serial":"vstarterkit001","temp":89.61,"humidity":35,"accelX":0.97,"accelY":0.013,"accelZ":-0.038}

Don't worry, nobody got burnt, the temperature is in degrees Fahrenheit. :)

Publish a message (from, say, the Pubnub console http://pubnub.com/console) of the form {"LED":<name-of-the-color>} on the channel that this demo listens to (default is hello_world) to turn the LED to that color on the Starter Kit:

Turn LED to red

{"LED":"Red"}

Turn LED to green

{"LED":"Green"}

Turn LED to blue

{"LED":"Blue"}

main.cpp

Committer:
stefanrousseau
Date:
2016-07-12
Revision:
12:7c94ec5069dc
Parent:
11:e6602513730f
Child:
14:0c353e212296
Child:
15:61df4a452d38

File content as of revision 12:7c94ec5069dc:

#include "mbed.h"
#include <cctype>
#include <string>
#include "SerialBuffered.h"
#include "HTS221.h"
#include "config_me.h"
#include "wnc_control.h"
#include "sensors.h"

#include "hardware.h"
I2C i2c(PTC11, PTC10);    //SDA, SCL -- define the I2C pins being used

// comment out the following line if color is not supported on the terminal
#define USE_COLOR
#ifdef USE_COLOR
 #define BLK "\033[30m"
 #define RED "\033[31m"
 #define GRN "\033[32m"
 #define YEL "\033[33m"
 #define BLU "\033[34m"
 #define MAG "\033[35m"
 #define CYN "\033[36m"
 #define WHT "\033[37m"
 #define DEF "\033[39m"
#else
 #define BLK
 #define RED
 #define GRN
 #define YEL
 #define BLU
 #define MAG
 #define CYN
 #define WHT
 #define DEF
#endif

#define MDM_DBG_OFF                             0
#define MDM_DBG_AT_CMDS                         (1 << 0)
int mdm_dbgmask = MDM_DBG_OFF;

Serial         pc(USBTX, USBRX);
SerialBuffered mdm(PTD3, PTD2, 128);
DigitalOut     led_red(LED_RED);
DigitalOut     led_green(LED_GREEN);

DigitalOut  mdm_uart2_rx_boot_mode_sel(PTC17);  // on powerup, 0 = boot mode, 1 = normal boot
DigitalOut  mdm_power_on(PTB9);                 // 0 = turn modem on, 1 = turn modem off (should be held high for >5 seconds to cycle modem)
DigitalOut  mdm_wakeup_in(PTC2);                // 0 = let modem sleep, 1 = keep modem awake -- Note: pulled high on shield

DigitalOut  shield_3v3_1v8_sig_trans_ena(PTC4); // 0 = disabled (all signals high impedence, 1 = translation active
DigitalOut  mdm_uart1_cts(PTD0);

#define TOUPPER(a) (a) //toupper(a)

const char ok_str[] = "OK";
const char error_str[] = "ERROR";

#define MDM_OK                                  0
#define MDM_ERR_TIMEOUT                         -1

#define MAX_AT_RSP_LEN                          255

ssize_t mdm_getline(char *buff, size_t size, int timeout_ms) {
    int cin = -1;
    int cin_last;
    
    if (NULL == buff || size == 0) {
        return -1;
    }

    size_t len = 0;
    Timer timer;
    timer.start();
    while ((len < (size-1)) && (timer.read_ms() < timeout_ms)) {
        if (mdm.readable()) {
            cin_last = cin;
            cin = mdm.getc();
            if (isprint(cin)) {
                buff[len++] = (char)cin;
                continue;
            } else if (('\r' == cin_last) && ('\n' == cin)) {
                break;
            }
        }
        wait_ms(1);
    }
    buff[len] = (char)NULL;
    
    return len;
}

int mdm_sendAtCmd(const char *cmd, const char **rsp_list, int timeout_ms) {
    if (cmd && strlen(cmd) > 0) {
        if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
            printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd);
        }
        mdm.printf("%s\r\n", cmd);
    }
    
    if (rsp_list) {
        Timer   timer;
        char    rsp[MAX_AT_RSP_LEN+1];
        int     len;
        
        timer.start();
        while (timer.read_ms() < timeout_ms) {
            len = mdm_getline(rsp, sizeof(rsp), timeout_ms - timer.read_ms());
            
            if (len < 0)
                return MDM_ERR_TIMEOUT;

            if (len == 0)
                continue;
                
            if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
                printf(MAG "ATRSP: " DEF "<-- " CYN "%s" DEF "\n", rsp);
            }
        
            if (rsp_list) {
                int rsp_idx = 0;
                while (rsp_list[rsp_idx]) {
                    if (strcasecmp(rsp, rsp_list[rsp_idx]) == 0) {
                        return rsp_idx;
                    }
                    rsp_idx++;
                }
            }
        }
        return MDM_ERR_TIMEOUT;
    }
    return MDM_OK;
}

int mdm_init(void) {
    // disable signal level translator
    shield_3v3_1v8_sig_trans_ena = 0;

    // power modem on //off
    mdm_power_on = 0; //1;
    
    // insure modem boots into normal operating mode
    // and does not go to sleep when powered on
    mdm_uart2_rx_boot_mode_sel = 1;
    mdm_wakeup_in = 1;
    
    // initialze comm with the modem
    mdm.baud(115200);
    // clear out potential garbage
    while (mdm.readable())
      mdm.getc();

    mdm_uart1_cts = 0;
    
    // enable the signal level translator to start
    // modem reset process (modem will be powered down)
    shield_3v3_1v8_sig_trans_ena = 1;
    
    // Give the modem 60 secons to start responding by
    // sending simple 'AT' commands to modem once per second.
    Timer timer;
    timer.start();
    while (timer.read() < 60) {
        const char * rsp_lst[] = { ok_str, error_str, NULL };
        int rc = mdm_sendAtCmd("AT", rsp_lst, 500);
        if (rc == 0)
            return timer.read();
        wait_ms(1000 - (timer.read_ms() % 1000));
        pc.printf("\r%d",timer.read_ms()/1000);
    }
    return false;       
}

int mdm_sendAtCmdRsp(const char *cmd, const char **rsp_list, int timeout_ms, string * rsp, int * len) {
    static char cmd_buf[3200];  // Need enough room for the WNC sockreads (over 3000 chars)
    size_t n = strlen(cmd);
    if (cmd && n > 0) {
        if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
            printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd);
        }
        while (n--) {
            mdm.putc(*cmd++);
            wait_ms(1);
        };
        mdm.putc('\r');
        wait_ms(1);
        mdm.putc('\n');
        wait_ms(1);
    }

    if (rsp_list) {
        rsp->erase(); // Clean up from prior cmd response
        *len = 0;
        Timer   timer;
        timer.start();
        while (timer.read_ms() < timeout_ms) {
            int lenCmd = mdm_getline(cmd_buf, sizeof(cmd_buf), timeout_ms - timer.read_ms());

            if (lenCmd == 0)
                continue;

            if (lenCmd < 0)
                return MDM_ERR_TIMEOUT;
            else {
                *len += lenCmd;
                *rsp += cmd_buf;
            }

            if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
                printf(MAG "ATRSP: " DEF "<-- " CYN "%s" DEF "\n", cmd_buf);
            }

            int rsp_idx = 0;
            while (rsp_list[rsp_idx]) {
                if (strcasecmp(cmd_buf, rsp_list[rsp_idx]) == 0) {
                    return rsp_idx;
                }
                rsp_idx++;
            }
        }
        return MDM_ERR_TIMEOUT;
    }
    pc.printf("D %s",rsp);
    return MDM_OK;
}

void reinitialize_mdm(void)
{
    // Initialize the modem
    printf(GRN "Modem RE-initializing..." DEF "\r\n");
    if (!mdm_init()) {
        printf(RED "\n\rModem RE-initialization failed!" DEF "\n");
    }
    printf("\r\n");
}
// These are built on the fly
string MyServerIpAddress;
string MySocketData;

// These are to be built on the fly
string my_temp;
string my_humidity;

#define CTOF(x)  ((x)*1.8+32)

//********************************************************************************************************************************************
//* Create string with sensor readings that can be sent to flow as an HTTP get
//********************************************************************************************************************************************
K64F_Sensors_t  SENSOR_DATA =
{
    .Temperature        = "0",
    .Humidity           = "0",
    .AccelX             = "0",
    .AccelY             = "0",
    .AccelZ             = "0",
    .MagnetometerX      = "0",
    .MagnetometerY      = "0",
    .MagnetometerZ      = "0",
    .AmbientLightVis    = "0",
    .AmbientLightIr     = "0",
    .UVindex            = "0",
    .Proximity          = "0",
    .Temperature_Si7020 = "0",
    .Humidity_Si7020    = "0"
};

void GenerateModemString(char * modem_string)
{
    switch(iSensorsToReport)
    {
        case TEMP_HUMIDITY_ONLY:
        {
            sprintf(modem_string, "GET %s%s?serial=%s&temp=%s&humidity=%s %s%s\r\n\r\n", FLOW_BASE_URL, FLOW_INPUT_NAME, FLOW_DEVICE_NAME, SENSOR_DATA.Temperature, SENSOR_DATA.Humidity, FLOW_URL_TYPE, MY_SERVER_URL);
            break;
        }
        case TEMP_HUMIDITY_ACCELEROMETER:
        {
            sprintf(modem_string, "GET %s%s?serial=%s&temp=%s&humidity=%s&accelX=%s&accelY=%s&accelZ=%s %s%s\r\n\r\n", FLOW_BASE_URL, FLOW_INPUT_NAME, FLOW_DEVICE_NAME, SENSOR_DATA.Temperature, SENSOR_DATA.Humidity, SENSOR_DATA.AccelX,SENSOR_DATA.AccelY,SENSOR_DATA.AccelZ, FLOW_URL_TYPE, MY_SERVER_URL);
            break;
        }
        case TEMP_HUMIDITY_ACCELEROMETER_PMODSENSORS:
        {
            sprintf(modem_string, "GET %s%s?serial=%s&temp=%s&humidity=%s&accelX=%s&accelY=%s&accelZ=%s&proximity=%s&light_uv=%s&light_vis=%s&light_ir=%s %s%s\r\n\r\n", FLOW_BASE_URL, FLOW_INPUT_NAME, FLOW_DEVICE_NAME, SENSOR_DATA.Temperature, SENSOR_DATA.Humidity, SENSOR_DATA.AccelX,SENSOR_DATA.AccelY,SENSOR_DATA.AccelZ, SENSOR_DATA.Proximity, SENSOR_DATA.UVindex, SENSOR_DATA.AmbientLightVis, SENSOR_DATA.AmbientLightIr, FLOW_URL_TYPE, MY_SERVER_URL);
            break;
        }
        default:
        {
            sprintf(modem_string, "Invalid sensor selected\r\n\r\n");
            break;
        }
    } //switch(*ucCommandIndex)
} //GenerateModemString        
            
            
//Periodic timer
Ticker OneMsTicker;
volatile bool bTimerExpiredFlag = false;
int OneMsTicks = 0;
int iTimer1Interval_ms = 1000;
//********************************************************************************************************************************************
//* Periodic 1ms timer tick
//********************************************************************************************************************************************
void OneMsFunction() 
{
    OneMsTicks++;
    if ((OneMsTicks % iTimer1Interval_ms) == 0)
    {
        bTimerExpiredFlag = true;
    }            
} //OneMsFunction()

int main() {
    int i;
    HTS221 hts221;
    pc.baud(115200);
    
    void hts221_init(void);

    pc.printf(BLU "Hello World from AT&T Shape!\r\n\n\r");
    pc.printf(GRN "Initialize the HTS221\n\r");

    i = hts221.begin();  
    if( i ) 
        pc.printf(BLU "HTS221 Detected! (0x%02X)\n\r",i);
    else
        pc.printf(RED "HTS221 NOT DETECTED!!\n\r");

    printf("Temp  is: %0.2f F \n\r",CTOF(hts221.readTemperature()));
    printf("Humid is: %02d %%\n\r",hts221.readHumidity());
    
    sensors_init();
    read_sensors();

    // Initialize the modem
    printf(GRN "Modem initializing... will take up to 60 seconds" DEF "\r\n");
    i=mdm_init();
    if (!i) {
        pc.printf(RED "Modem initialization failed!" DEF "\n");
        while (1);
    }
    
    //Software init
    software_init_mdm();
    
    // Resolve URL to IP address to connect to
    resolve_mdm();

    //Create a 1ms timer tick function:
    OneMsTicker.attach(OneMsFunction, 0.001f) ;
    iTimer1Interval_ms = 5000; //5 seconds

    // Send and receive data perpetually
    while(1) {
        if  (bTimerExpiredFlag)
        {
            bTimerExpiredFlag = false;
            sprintf(SENSOR_DATA.Temperature, "%0.2f", CTOF(hts221.readTemperature()));
            sprintf(SENSOR_DATA.Humidity, "%02d", hts221.readHumidity());
            read_sensors(); //read available external sensors from a PMOD and the on-board motion sensor
            sockopen_mdm();
            char modem_string[512];
            GenerateModemString(&modem_string[0]);
            printf(DEF "Sending to modem : %s\n", modem_string); 
            sockwrite_mdm(modem_string);
            sockread_mdm(&MySocketData, 1024, 20);
            sockclose_mdm();
        } //bTimerExpiredFlag
    } //forever loop

#if (0)
    string * pStr;
    while (1)
    {
       send_wnc_cmd("AT", &pStr, WNC_TIMEOUT_MS);
    }
#endif    
}