This program simply connects to a HTS221 I2C device to read Temperature & Humidity, and a WNC Cellular Module both of which are on the Avnet WNC Shield.
Dependencies: mbed FXOS8700CQ
AT&T Shape Hackathon QuickStart Instructions
- One area that has been problematic is setting the the MY_SERVER_URL. When you copy the URL from the flow, you must make sure that the MY_SERVER_URL is also set to the appropirate server. It can be either "run-east.att.io" or "run-west.att.io", so be sure to check this.
Useful Links
Adding Additional Sensors
The FLOW_DEVICE_NAME field must contain the name of the instance of the Virtual Starter kit in FLOW that you will be communicating with. Usually this will be "vstarterkit001", but if you have problems communicating you can verify that this is indeed correct. Note that this device will not be created until you click the “Initialize” input on the Virtual Device tab of the Starter Kit project in FLOW. At that point it becomes available in M2X and you can see it there, as the DEVICE SERIAL field under Devices as in the image below.
Sensors: When executing, the FRDM-K64F board will upload sensor measurements to AT&T’s Flow environment every 5 seconds, using the Cellular shield board. You can adjust how often you want to do this by editing the SENSOR_UPDATE_INTERVAL_MS value in the header file. Temperature and humidity: By default the board will report readings from the HTS221 temperature and humidity sensor. These two values are sent to the HTTP IN /climate port in FLOW with field names “temp” and “humidity”. Temperature is in degrees Fahrenheit and humidity is a %. This default assignment is: iSensorsToReport = TEMP_HUMIDITY_ONLY;
Accelerometer: If you want to expand and use the on-board motion sensor, you can also send 3-axis accelerometer information from the board as “accelX”, “accelY” and “accelZ”. This is useful if you want to know the stationary position of the board with regards to gravity, or whether it is in motion. These readings are in g’s. To send these values, change the assignment to: iSensorsToReport = TEMP_HUMIDITY_ACCELEROMETER;
PMOD Sensors: If you have a Silicon Labs sensor module that can plug into the PMOD connector on the Cellular shield, you will also be able to measure proximity, UV light, ambient visible and infrared light from the Si1145 sensor. This PMOD also has a temperature and humidity sensor, but in this case it is redundant. When enabled, the fields “proximity”, “light_uv”, “light_vis” and “light_ir” will also be sent. To enable all these sensors, change the assignment to: iSensorsToReport = TEMP_HUMIDITY_ACCELEROMETER_PMODSENSORS;
Connecting up the PMOD sensors: Because the pinouts do not align, the SiLabs PMOD sensor board cannot be plugged into the J10 PMOD receptacle on the shield directly. The following wiring instructions must be used:
Signal | =J10 | =(Shield) PMOD | =Color in the image below |
---|---|---|---|
VCC | Pin 6 | Pin 6 | Red |
GND | Pin 5 | Pin 5 | Black |
SDA | Pin4 | Pin 3 | Green |
SCL | Pin3 | Pin 2 | Yellow |
Link to AT&T M2X
Link to AT&T Flow
Avnet WNC-Shield Information
Getting Started with the Avnet WNC-Shield & Hackathon software
- This project uses Revision 119 of the MBED library because of I2C implementation differences with the tip (Revision 121)
- This project uses Revision 4 of the FXOS8700CQ library for sensors
Easily modifiable parameters in source code
Inside the mbed “AvnetATT_shape_hackathon” project, the parameters that are needed to customize your board are in the config_me.h file.
- FLOW parameters: This project assumes that you are using a fork of the “Starter Kit Base” project, which is a reference design that was created using AT&T’s FLOW (https://flow.att.com) that allows the creation of on-line virtualization and other IoT functionality. The default parameters in the config_me.h file are done for a specific instance of this project. When you fork the original project, you get your own instance and it will have its own base address. At the bottom of the FLOW environment, when you click on the “Endpoints” tab, you will see the URL information that is specific to your instance. Of note is the Base URL. In the example below (as in the default mbed project), the Base URL is: https://run-west.att.io/1e464b19cdcde/774c88d68202/86694923d5bf28a/in/flow You have to take note of two parts of this address. The run-west.att.io part is the server URL, and you have to make sure the
- MY_SERVER_URL field in config_me.h matches this. Then there is the rest of the base URL, in green above, that needs to be pasted into the FLOW_BASE_URL field.
There is also a FLOW_INPUT_NAME field. This should match the name of the HTTP IN port in the FLOW project that you want to send sensor data to. The default is "/climate", as in the FLOW image below.
Where is the binary I compiled
When the COMPILE button is pressed, it will compile your project and link it. The result is placed in the DOWNLOAD folder you use when downloading files from the internet. It will be called AvnetATT_shape_hackathon_K64F.bin.
Additional information on compiling/configuring
Comprehensive instructions can be found at: Quick Start Instructions
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 }