Find Jobs
Hire Freelancers

Develop embedded C Code for ARM processor and LoRa wireless

£1500-6150 GBP

Probíhající
Zveřejněno skoro před 8 roky

£1500-6150 GBP

Zaplaceno při doručení
We require an experienced C software developer to write an application for an ARM processor (NXP LPC1549) to send data over a wireless link using LoRa wireless module. The application shall read Modbus RS485 commands at the master and send these to slaves via LoRa wireless using the attached LoRa wireless module. The wireless module uses AT commands for control. The remote ends shall send the received Modbus command on their own RS485 connection and then send the received data back to the master over the wireless link The application shall also implement a number of FIFO buffers at the remote ends which can be requested by the master over the wireless link. The application shall also implement a simple Telnet type menu via the attached USB connection to carry out basic diagnostics and configuration parameters. Prototype hardware is available for the software development. A full specification is available upon signing an NDA.
IČ projektu: 10872104

O projektu

11 nabídky
Vzdálený projekt
Aktivní před 8 roky

Chcete si vydělat nějaké peníze?

Výhody podávání nabídek na Freelancer

Stanovte si rozpočet a časový rámec
Získejte za svou práci zaplaceno
Načrtněte svůj návrh
Registrace a podávání nabídek je zdarma
Uděleno:
Avatar uživatele
Dear Sir, I\'ve expert level skills in RF communication with excellent coding skills. Have used ARM, PIC, ST, 8051, MSP and many other microcontroller series. My projects group have got more than 70,000 members over the globe. [login to view URL] I have already use HopeRf, TI-CC1101, ST-SPIRIT, simple 433MHz rf modules, pl1167 and many other RF chips. Can you please share project details? Regards, Farrukh
£6 150 GBP v 210 dnech
4,9 (20 recenze)
5,4
5,4
11 freelanceři nabízejí v průměru £3 041 GBP za tuto práci
Avatar uživatele
Hello, I am a qualified expert in embedded programming with decades of experience. Many worked with a variety of RF modules, including BT, ZBee, WiFi and proprietary.
£2 500 GBP v 30 dnech
4,8 (30 recenze)
6,2
6,2
Avatar uživatele
Hi, I have experience in development of LoRa based embedded applications. I have also experience in working on ARM microcontrollers. I have experience with RS485 as well. I can execute this project in less possible time. Looking Forward, Khawaja
£2 368 GBP v 10 dnech
4,8 (58 recenze)
6,4
6,4
Avatar uživatele
Hi, I am interested in your project as I believe I meet most of the requirements you have specified. Please take a look into my profile to know more about me. I have quite lot experience of writing professional code for ARM processors both application and at driver level, I did a project based on AVR and RS485. Though I do not have experience of LoRa but I have hands on experience using AT commands to communicate with GSM modem. I have set the bid amount and milestone at random as I would like to know more details about the project to get a complete picture of it after which I can estimate the amount of work required. Please let me know if you have queries. Regards, Ibrahim
£3 333 GBP v 30 dnech
4,8 (10 recenze)
5,7
5,7
Avatar uživatele
hello i am interested in your project. i have already worked on projects that uses ARM controllers(STM32). we can discuss details via private chat. thanks.
£2 500 GBP v 60 dnech
4,9 (34 recenze)
5,6
5,6
Avatar uživatele
I am university professor with PhD in Computer Networks and I have published around 40 papers and one book. I have a lot of experience for this project.
£3 000 GBP v 30 dnech
4,9 (5 recenze)
4,9
4,9
Avatar uživatele
Hello! Please check my reviews to know a bit about me. I love to write assembly code in ARM. I have decent knowledge about ARM processors and architecture. It would be great if I could help you out. Thanks!
£2 500 GBP v 30 dnech
5,0 (37 recenze)
4,8
4,8
Avatar uživatele
Creative developer of small, controller type of applications. Experienced in integrating electronics hardware with state of art micro controller software. Specializing in ATmel of-the-shelf SAM 3X8E ARM series processor. STM32, AVR, oneWire, Freertos(starter) Altium designer. make PCB Strong skill electronic hardware. Oscilloscope, ammeter, voltmeter. Solderwork, Ubuntu (strong user) MSEE (electronics and computers ) and programming since 1973. I launched several IoT projects using LoRa and Sigfox. And keep in touch with all the new technologies involved in the Internet of Things, specially in long range ones. I have designed and developed systems over ARM/PIC/Atmel/Arduino controllers using GSM, GPRS, GPS, IMUs, BLE, Zigbee, LORA, sensors (temperature, humidity, pressure etc), USB_OTG etc and have also integrated battery management/charging and energy harvesting solutions with my designs. Summary of processors & tools I use: - Processors: Analog Devices SHARC 210xx and 214xx, MicroChip dsPIC33/PIC16/PIC18, ST Micro STM32F0/STM32F1/STM32F4 and NXP ARM-7/Cortex-M3/Cortex-M4, Texas Instruments TLV320AIC3254 CODEC miniDSP - Embedded IDE tools: Keil uVision, IAR EWARM, Eclipse GCC, Analog Devices CrossCore Embedded Studio, MicroChip MPLAB-X, Texas Instruments PurePath Studio DSP - Embedded IP libraries: Micrium GUI, Micrium uC/OS-II RTOS, MicroDigital smxFS FAT file system, OBD Experts vehicle OBD-II
£1 666 GBP v 14 dnech
1,2 (16 recenze)
7,0
7,0
Avatar uživatele
Hello, This is Kevin Kathro here from TheWebTechies Web Services. We are a reputed IT firm specialising in creating and doing projects in C, C++ etc. We have an excellent team of developers who can deliver your project within the specified time frame and as per your exact requirements. We also provide service and support even after the project is completed and submitted to the client. P.S: The price and time is subjected to change depending on our final discussion of project. Thanks and Regards Kevin Kathro
£2 500 GBP v 30 dnech
0,0 (0 recenze)
0,0
0,0
Avatar uživatele
Dear Madam or Sir, I noticed that your project fits perfectly with our experience, thus I would like to offer our services. In order to confirm our EXPERIENCE in requested area (embedded programming, communication protocols, wireless) I'm sending the examples of the projects we completed: * Firmware development for electro-energetic circuit protection systems (C, ARM), * Ethernet encryption device, HW&SW development (ARM, encryption), * Insulation resistance tester software and hardware development (ARM, drivers), * Car infotainment systems, firmware development (ARM, wireless), * Snow gun wireless remote control, software + hardware development (ARM, drivers, wifi/bt), * TCP/IP protocol stack implementation for embedded devices (ARM, encryption), * Modbus TCP/IP implementation, * IEC61850 stack implementation for embedded applications (ARM, Linux, drivers), * Powerlink stack integration on different platforms (ARM, Linux, drivers), * Porting of Linux kernel to different hardware platforms (ARM, Linux) * Drivers development -> Ethernet Driver for BeagleBone running MINIX OS, LCD driver for Renesas chip, Linux drivers (e.g. PCIe, Powerlink)... (drivers), * android app collecting information from different medical devices (wireless). Company presentation and reference letters available upon request. Price indicated above is our monthly rate. I kindly ask you to provide me with the project specification. Yours faithfully Maciej Gasienica JPEmbedded
£4 444 GBP v 30 dnech
0,0 (0 recenze)
0,0
0,0
Avatar uživatele
Hi, I already worked on several similar project professionally, executed in scheduled time with bug free software. Thanks, Warm Regards, Nilesh Bhadule
£2 488 GBP v 45 dnech
0,0 (0 recenze)
0,0
0,0

O klientovi

Pochází z UNITED KINGDOM
Stone, United Kingdom
4,8
4
Ověřená platební metoda
Členem od led 31, 2013

Ověření klienta

Díky! Poslali jsme vám e-mailem odkaz pro získání kreditu zdarma.
Při odesílání e-mailu se něco pokazilo. Zkuste to prosím znovu.
Registrovaných uživatelů Zveřejněných projektů
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Načítání náhledu
Bylo uděleno povolení ke geolokaci.
Vaše doba přihlášení vypršela a byli jste odhlášeni. Přihlaste se znovu.