GPRS MQTT gateway with OTA feature for target stm32

₹12500-37500 INR

Closed

Posted

over 4 years ago

₹12500-37500 INR

Paid on delivery

Need to design firmware to build MQTT gateway with following details [login to view URL] for STM32 + sim800 + SPI flash memory 2. Gateway need to publish data received on uart of STM32 gate way from mother board 3. Gateway need to subscribe topic and when data recieved send that data to mother board via uart 4. Gateway need to check atleast once/twice a day for new firmware available on server. 5. If new file available then ask server to send that .bin or hex file and store it to SPI flash. If correct file received then reprogram mother board SMT32 using bootloader pin and uart.

Project ID: 21262034

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8 proposals

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Active 5 yrs ago

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8 freelancers are bidding on average ₹42,361 INR for this job

@TisteAndii

Hi, I'm an embedded software engineer with lots of experience with STM32s. I understand you'd like to build an STM32 gateway between your motherboard and a web MQTT broker, with OTA support as well, all over GSM. I can implement this quickly and neatly. Contact me to discuss details.

₹35,000 INR in 14 days

5.0

(21 reviews)

4.6

@deeproadrash

Hello, Deep is here. I have experience with STM32 series MCUs, SIM800 hardware as well as Firmware development. I have experience with MQTT, OTA. I can help you for this development.

₹60,000 INR in 30 days

4.8

(20 reviews)

4.3

@edi45

Hi i am embedded system engineer. i have a few experience with GSM module like SIM800 and a few other like sim900, 5320a or IoT-GA6. i have ever develop firmware update for stm32. i develop custom bootloader so no need for additional pin. let me know if you are interested

₹50,000 INR in 7 days

4.8

(1 review)

0.5

@rtdxinc

I am an Embedded System Developer with an expertise in IOT. I have built firmware for Esp, Arduinos and STM board over parts and I can develop a customized one for you. I also build MQTT cloud servers and can build one for you on any cloud platform. Features you mentioned seem possible to implement and I would love to work with you!

₹30,000 INR in 5 days

5.0

(2 reviews)

0.6

@vijaykumarmourya

Hi we have a almost prototype ready to which will have ability to full fill your requirement by making some changes in it We are also having Expertise in following domains 1. Embedded. 2. Electronic & Electrical. 3. IOT. 4. Robotics & Drones Engineering. 5. Industry 4.0 & 6.0. 6. Industry & Home Automation. 7. Research & Development for industrial. We have well experience person in there domains. For further details please contact us at Free Lancer Thanks you

₹38,888 INR in 3 days

0.0

(0 reviews)

0.0

@ajaysoni1516

hello I am embedded system developer. I have developed project with mqtt server. I have developed OTA in stm32 and using quectel mc66. I have ota with openCpu.

₹44,444 INR in 20 days

0.0

(0 reviews)

0.0

@anish7448

I am interested to work on this project as I have already experience on GPS, GSM products. I have worked on quectel, Simcom GPRS chips.

₹55,555 INR in 30 days

0.0

(0 reviews)

0.0

@uxiaojuan2019

I have worked as developer embedded system with microcontroller such as DSP, FPGA/CPLD, PIC, PLC and so on. In there years, I have experiences about electronics engineering, power converter, communication such as SCI, SPI, CAN, GPIB(Agilent equipment), GPRS(Sim800, Sim808, etc). Also I have experiences about Automatic control such as Motor Control, PI control, 2P2Z control, Hysteresis control, and so on. I have made many equipments.

₹25,000 INR in 7 days