IoT Sensor Hardware - C Programming - Contiki OS

Hi there !

We are looking for a trustworthy and skilled Software Developer, who has experience in embedded systems development, especially working with

Texas Industries Radio Chips (cc26xx / cc13xx Soc)

Contiki OS (which is running on above mentioned chips)

The project focus is to extend an existing demo application with code for getting additional sensor data, switch DPIO's from the Chip and integrate OTA- / configuration management options.

please have a look to: [login to view URL]

Detailed infos to a similiar project can be found here:


the design files of the sensortag are: http://www.ti.com/lit/zip/swrc321

here is the source of Contiki: https://github.com/contiki-os/contiki

setting up a demo system: http://processors.wiki.ti.com/index.php/Contiki-6LOWPAN-BBB

base software for Contiki Dev.: http://processors.wiki.ti.com/index.php/Cc26xx_sw_examples
--> cc26xx-web-demo

our needs:

on the sensortag, we want to add some I²C devices, some sensors, some AD converter and plugs for accessing the sensors / switches.
inside contiki, this data need to be added to the original set of 8 sensors.

We also need a second instance, which switches 230VAC and controls 230VAC via phase fired controller https://en.wikipedia.org/wiki/Phase-fired_controllers

1. Hardware:

Base: CC1350 Sensortag

Sensing Node:

- add optional Li-Ion connector with Charging control with standby coin cell battery and report accu status to sensor dataset (voltage)
- add 2-pin interface for Micro-Solar-Panel (attached to DCDC-Converter)
- add micro-USB interface with USB-UART Bridge and connection to UART of cc1350 & Power Inlet (max. current for Li-Ion Charger)

- add pwm-in for: https://www.co2meter.com/collections/co2-sensors/products/s8-miniature-co2-sensor-1
- add double-ssr for switching 2x max. 60V / 2A
- add 512 KB Flash memory via SPI (W25X40CL)
- add 2 x 4-20mA (opt. 0-20mA) sensor port

Acting Node:

- add 230VAC --> Li-Ion Charger-Input-Voltage
- add micro-USB interface with USB-UART Bridge and connection to UART of cc1350 & Power Inlet (max. current for Li-Ion Charger)
- add optional Li-Ion connector with Charging control with standby coin cell battery and report accu status to sensor dataset (voltage)
- add opto coupler with non-zero crossing OC and phase fire controller
- add interface for 2 x 230VAC loads (max. 16A) and auto-fuse
- add current sensor to each 230VAC output
- add mechanic fuse to the 230VAC inlet
- add LED for every 230VAC in- and outlet and show activity (RGB LED, dark = 0amp, red = 16A (green, orange in between)
- add interface for UART pins
- add 512 KB Flash memory via SPI (W25X40CL)

Power system:

- powered by Micro-USB plug connected to 5V --> operate and optionally charge Li-Ion Accu (when connected at Li-Ion Accu port)
- powered by Li-Ion Accu (when connected and charged above xx %)
- powered by Coincell battery

Квалификация: Программирование на С, Встроенное ПО, Микроконтроллер, Беспроводные технологии

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О работодателе:
( 0 отзыв(-а, -ов) ) Wien, Austria

ID проекта: #15677672

12 фрилансеров(-а) в среднем готовы выполнить эту работу за €13/час


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€10 EUR / час
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Hi I hope you are doing well. I have experience in CC2650 sensor tag programming with TI RTOS. onhave knowledge of contiki os as well. I have hardware available for quick progress. Looking Forward Khawaja

€15 EUR / час
(57 отзывов(-а))

Hello Dear, I am an expert with more than 15 years of experience in the field of embedded systems, firmware development and prototyping. I assure you the best solution for your work. Regards Ch

€15 EUR / час
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hello i am interested in your project. i have a good experience in embedded systems development and c pogramming. we can discuss more details in private chat. after reading the additional project descripti Больше

€11 EUR / час
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Hello I have experience in designing electronics circuits and can make your project. I will make your project practically on breadboard and will provide you circuit , code and PCB design. Thanks

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Hello, your project is interesting for me. I have an expirience with cc2530/2540. Also I have much expirience with other microcontrollers. I am an expert in electronics and embeded progrming.

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Have experience on TI processor and RTOs. Relevant Skills and Experience Firmware programming, RTOS, PIC32, Cypress, ARM, Linux, Device drivers

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IoT implementation using CC26xx/CC13xx processors. I have been working with CC2650 using TI RTOS. I also have experience with IoT implementations, using MQTT protocol I have not worked with ConTiki OS, but with Больше

€16 EUR / час
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Hello Dear Client, We have gone through your requirement and would to take this opportunity to work on this project. Can you send a detailed requirement about your project. About us We have been providin Больше

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