Find Jobs
Hire Freelancers

Develop embedded C Code for ARM processor and LoRa wireless

£1500-6150 GBP

処理中
投稿日: 8年近く前

£1500-6150 GBP

完了時にお支払い
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.
プロジェクト ID: 10872104

プロジェクトについて

11個の提案
リモートプロジェクト
アクティブ 8年前

お金を稼ぎたいですか?

Freelancerで入札する利点

予算と期間を設定してください
仕事で報酬を得る
提案をご説明ください
登録して仕事に入札するのは無料です
アワード者:
ユーザーアバター
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 210日以内
4.9 (20 レビュー)
5.4
5.4
この仕事に11人のフリーランサーが、平均£3,041 GBPで入札しています
ユーザーアバター
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 30日以内
4.8 (30 レビュー)
6.2
6.2
ユーザーアバター
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 10日以内
4.8 (58 レビュー)
6.4
6.4
ユーザーアバター
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 30日以内
4.8 (10 レビュー)
5.7
5.7
ユーザーアバター
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 60日以内
4.9 (34 レビュー)
5.6
5.6
ユーザーアバター
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 30日以内
4.9 (5 レビュー)
4.9
4.9
ユーザーアバター
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 30日以内
5.0 (37 レビュー)
4.8
4.8
ユーザーアバター
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 14日以内
1.2 (16 レビュー)
7.0
7.0
ユーザーアバター
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 30日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
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 30日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
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 45日以内
0.0 (0 レビュー)
0.0
0.0

クライアントについて

UNITED KINGDOMのフラグ
Stone, United Kingdom
4.8
4
お支払い方法確認済み
メンバー登録日:1月 31, 2013

クライアント確認

ありがとうございます!無料クレジットを受け取るリンクをメールしました。
メールを送信中に問題が発生しました。もう一度お試しください。
登録ユーザー 投稿された仕事の合計
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
プレビューを読み込み中
位置情報へのアクセスが許可されました。
あなたのログインセッションの有効期限がきれ、ログアウトされました。もう一度ログインしてください。