AT&T IoT / Mbed OS ATT_AWS_IoT_demo Featured

Demo application for using the AT&T IoT Starter Kit Powered by AWS.

Dependencies:   SDFileSystem

Fork of ATT_AWS_IoT_demo by Anthony Phillips

IoT Starter Kit Powered by AWS Demo

This program demonstrates the AT&T IoT Starter Kit sending data directly into AWS IoT. It's explained and used in the Getting Started with the IoT Starter Kit Powered by AWS on starterkit.att.com.

What's required

  • AT&T IoT LTE Add-on (also known as the Cellular Shield)
  • NXP K64F - for programming
  • microSD card - used to store your AWS security credentials
  • AWS account
  • Python, locally installed

If you don't already have an IoT Starter Kit, you can purchase a kit here. The IoT Starter Kit Powered by AWS includes the LTE cellular shield, K64F, and a microSD card.

Sensors/Temperature/HTS221.h@20:ee34856ae510, 2016-12-07 (annotated)

Committer:
ampembeng
Date:
Wed Dec 07 20:37:20 2016 +0000
Revision:
20:ee34856ae510
The demo now reads the FRDM-K64F temperature and humidity sensors and adds that data to the reported AWS IoT device Shadow.  Both the firmware and Python GUI are updated.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ampembeng 20:ee34856ae510 1
ampembeng 20:ee34856ae510 2 #ifndef HTS221_H_
ampembeng 20:ee34856ae510 3 #define HTS221_H_
ampembeng 20:ee34856ae510 4
ampembeng 20:ee34856ae510 5 class HTS221 {
ampembeng 20:ee34856ae510 6 public:
ampembeng 20:ee34856ae510 7 HTS221(void);
ampembeng 20:ee34856ae510 8 int begin(void);
ampembeng 20:ee34856ae510 9 int activate(void);
ampembeng 20:ee34856ae510 10 int deactivate(void);
ampembeng 20:ee34856ae510 11
ampembeng 20:ee34856ae510 12 int bduActivate(void);
ampembeng 20:ee34856ae510 13 int bduDeactivate(void);
ampembeng 20:ee34856ae510 14
ampembeng 20:ee34856ae510 15 int readHumidity(void);
ampembeng 20:ee34856ae510 16 double readTemperature(void);
ampembeng 20:ee34856ae510 17 private:
ampembeng 20:ee34856ae510 18 int storeCalibration(void);
ampembeng 20:ee34856ae510 19 unsigned char _h0_rH, _h1_rH;
ampembeng 20:ee34856ae510 20 unsigned int _T0_degC, _T1_degC;
ampembeng 20:ee34856ae510 21 unsigned int _H0_T0, _H1_T0;
ampembeng 20:ee34856ae510 22 unsigned int _T0_OUT, _T1_OUT;
ampembeng 20:ee34856ae510 23 double _temperature;
ampembeng 20:ee34856ae510 24 int _humidity;
ampembeng 20:ee34856ae510 25 unsigned char _address;
ampembeng 20:ee34856ae510 26
ampembeng 20:ee34856ae510 27 unsigned char readRegister(unsigned char slaveAddress, unsigned char regToRead);
ampembeng 20:ee34856ae510 28 int writeRegister(unsigned char slaveAddress, unsigned char regToWrite, unsigned char dataToWrite);
ampembeng 20:ee34856ae510 29 };
ampembeng 20:ee34856ae510 30
ampembeng 20:ee34856ae510 31 #define HTS221_ADDRESS 0xBF
ampembeng 20:ee34856ae510 32
ampembeng 20:ee34856ae510 33 //Define a few of the registers that we will be accessing on the HTS221
ampembeng 20:ee34856ae510 34 #define WHO_AM_I 0x0F
ampembeng 20:ee34856ae510 35 #define WHO_AM_I_RETURN 0xBC //This read-only register contains the device identifier, set to BCh
ampembeng 20:ee34856ae510 36
ampembeng 20:ee34856ae510 37 #define AVERAGE_REG 0x10 // To configure humidity/temperature average.
ampembeng 20:ee34856ae510 38 #define AVERAGE_DEFAULT 0x1B
ampembeng 20:ee34856ae510 39
ampembeng 20:ee34856ae510 40 /*
ampembeng 20:ee34856ae510 41 * [7] PD: power down control
ampembeng 20:ee34856ae510 42 * (0: power-down mode; 1: active mode)
ampembeng 20:ee34856ae510 43 *
ampembeng 20:ee34856ae510 44 * [6:3] Reserved
ampembeng 20:ee34856ae510 45 *
ampembeng 20:ee34856ae510 46 * [2] BDU: block data update
ampembeng 20:ee34856ae510 47 * (0: continuous update; 1: output registers not updated until MSB and LSB reading)
ampembeng 20:ee34856ae510 48 The BDU bit is used to inhibit the output register update between the reading of the upper
ampembeng 20:ee34856ae510 49 and lower register parts. In default mode (BDU = ?0?), the lower and upper register parts are
ampembeng 20:ee34856ae510 50 updated continuously. If it is not certain whether the read will be faster than output data rate,
ampembeng 20:ee34856ae510 51 it is recommended to set the BDU bit to ?1?. In this way, after the reading of the lower (upper)
ampembeng 20:ee34856ae510 52 register part, the content of that output register is not updated until the upper (lower) part is
ampembeng 20:ee34856ae510 53 read also.
ampembeng 20:ee34856ae510 54 *
ampembeng 20:ee34856ae510 55 * [1:0] ODR1, ODR0: output data rate selection (see table 17)
ampembeng 20:ee34856ae510 56 */
ampembeng 20:ee34856ae510 57 #define CTRL_REG1 0x20
ampembeng 20:ee34856ae510 58 #define POWER_UP 0x80
ampembeng 20:ee34856ae510 59 #define BDU_SET 0x4
ampembeng 20:ee34856ae510 60 #define ODR0_SET 0x1 // setting sensor reading period 1Hz
ampembeng 20:ee34856ae510 61
ampembeng 20:ee34856ae510 62 #define CTRL_REG2 0x21
ampembeng 20:ee34856ae510 63 #define CTRL_REG3 0x22
ampembeng 20:ee34856ae510 64 #define REG_DEFAULT 0x00
ampembeng 20:ee34856ae510 65
ampembeng 20:ee34856ae510 66 #define STATUS_REG 0x27
ampembeng 20:ee34856ae510 67 #define TEMPERATURE_READY 0x1
ampembeng 20:ee34856ae510 68 #define HUMIDITY_READY 0x2
ampembeng 20:ee34856ae510 69
ampembeng 20:ee34856ae510 70 #define HUMIDITY_L_REG 0x28
ampembeng 20:ee34856ae510 71 #define HUMIDITY_H_REG 0x29
ampembeng 20:ee34856ae510 72 #define TEMP_L_REG 0x2A
ampembeng 20:ee34856ae510 73 #define TEMP_H_REG 0x2B
ampembeng 20:ee34856ae510 74 /*
ampembeng 20:ee34856ae510 75 * calibration registry should be read for temperature and humidity calculation.
ampembeng 20:ee34856ae510 76 * Before the first calculation of temperature and humidity,
ampembeng 20:ee34856ae510 77 * the master reads out the calibration coefficients.
ampembeng 20:ee34856ae510 78 * will do at init phase
ampembeng 20:ee34856ae510 79 */
ampembeng 20:ee34856ae510 80 #define CALIB_START 0x30
ampembeng 20:ee34856ae510 81 #define CALIB_END 0x3F
ampembeng 20:ee34856ae510 82 /*
ampembeng 20:ee34856ae510 83 #define CALIB_T0_DEGC_X8 0x32
ampembeng 20:ee34856ae510 84 #define CALIB_T1_DEGC_X8 0x33
ampembeng 20:ee34856ae510 85 #define CALIB_T1_T0_MSB 0x35
ampembeng 20:ee34856ae510 86 #define CALIB_T0_OUT_L 0x3C
ampembeng 20:ee34856ae510 87 #define CALIB_T0_OUT_H 0x3D
ampembeng 20:ee34856ae510 88 #define CALIB_T1_OUT_L 0x3E
ampembeng 20:ee34856ae510 89 #define CALIB_T1_OUT_H 0x3F
ampembeng 20:ee34856ae510 90 */
ampembeng 20:ee34856ae510 91
ampembeng 20:ee34856ae510 92 #endif
ampembeng 20:ee34856ae510 93