README.md

FriskBy for CC3200 Launchpad running Energia

A general framework for reading sensors and sending data to the friskby server, using Energia on the TI CC3200 Launchpad.

Currently the on-board die-temp sensor and the Sharp GP2Y1010AU0F dust-sensor has been implemented. The Adafruit_TMP006 library is needed for the temp-sensor, but this should be included in energia by default.

TODO

• SSL
• Timestamp (Will not be necessary if the friskby server adds this automatically #15)
• Optimize for lower power consumption (check out sleepseconds(), suspend() etc.)

Getting started

1. Get Energia + cc3200 up and running following the guides http://energia.nu/pin-maps/guide_cc3200launchpad/ and http://energia.nu/cc3200guide/
2. Clone this repo and open it in energia

• Set correct serial port in Tools - Serial Port.
• Select Board Launchpad without EMT: Tools - Board - Launcpad w/cc3200

3. Update configuration-section in code, e.g. Wi-FI SSID & password
4. Build and upload (Ctrl+M is handy as it also brings up port monitor) - readings and messages sent to server should appear in port monitor (baud rate 115200)

Hardware and connections

• TI CC3200 Launchpad
• Sharp GP2Y1010AU0F
  • Connect to Dust sensor adapter
• Dust sensor adapter
  • Input:
    • VCC connected to 5V
    • D connected to Pin 61 (Digital out)
  • Output:
    • VCC connected to 5V
    • GND and A to voltage divider
• Voltage divider
  • Connected to Pin 59 (ADC channel 2)

Adding more sensors

See configuration-section on sensors. To add a new sensor:

• Create a new sensor-struct, add it to the listOfSensors array, and increase NUM_SENSORS.
• Implement initSensor() and readSensor(). Note! readSensor() must populate valueStr[] (the reading formatted as a string)
• Framework will do the rest.

Misc.

• ADC max input is 1.43 V (http://e2e.ti.com/support/wireless_connectivity/f/968/p/452997/1679745), dust sensor may deliver more than this so a voltage divider is needed.
• Do not use ADC Channel 0 (pin 57) because of bug, see http://e2e.ti.com/support/wireless_connectivity/f/968/p/452997/1679745
• Dust sensor will output 0.5 V pr 0.1 mg/m3 (https://www.sparkfun.com/products/9689), and the max output at no dust is 1.5 V (https://www.sparkfun.com/datasheets/Sensors/gp2y1010au_e.pdf)