Suljettu

I would like to hire a Microcontroller Developer

Ich suche Unterstützung bei Fehlersuche an einem fast fertigen Produkt. Wir sind eine kleine Elektronikfirma in Lüdenscheid und haben auf diesem Gebiet zwar Erfahrung. Leider bringt uns diese Fehlersuche an unserer Grenzen und ich wäre für Unterstützung sehr dankbar.

Anwendungsinfos:

* GSM / GPRS Funkmelder.

* Gerät befindet sich fast immer im Ruhezustand und wacht nur seltene Events und Lebendmeldungen auf.

* Nutzt Atmel Prozsssor Atmel ATMega 32 8P und Quectel Funkchip

* Der Atmel kommuniziert über eine UARTA Schnittstelle mit einem Quectel GSM Chip

Problem:

* Der Atmel startet (sehr sporadisch) ungewollt und ohne erkennbaren Grund neu.

* Dieses Verhalten tritt willkürlich auf bei ca. 1% aller Sendevorgänge.

* Vermeintlich während der Kommunikation mit dem GSM-Chip.

Prozessor Atmel ATMega 32 8P

Programmiert in C und C++

Atmel Studio 7

ca. 5500 Zeilen Code

Bislang keine Reproduzierbarkeit gefunden:

* Unabhängig vom gewählten Netz

* Unabhängig von Empfangsstärke / Netzqualität - Fehler tritt gehäuft bei schlechtem Mobilfunknetz auf (allerdings wird dann auch deutlich öfter gesendet).

* Unabhängig von Spannungsversorgung

* Saubere Reset-PIN Beschaltung

* EMV-Störung praktisch ausgeschlossen

Hardware:

* Platine mit F-Antenne (im Platinen-Layout)

* Atmel läuft mit 8MHz intermen Oszillator und hat einen Uhrenquarz der den TIMER2_OVF asynchron ansteuert

* GSM Chip Quectel 95

* Betriebsspannung kommt aus einem Akku

Benutzte Interrupts:

* INT0 (externer Sensor)

* TIMER2_OVF

* UARTA Interrupt

* TIMER0_COMPA

Libs

* avr/sleep.h

* stdlib.h

* mem-check/mem-check.c

* AVR055/calib_32kHz.c

* util/delay.h

* avr/interrupt.h

* avr/io.h

Taidot: Virheenjäljitys, Mikrocontroller, Ohjelmistokehitys

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About the Employer:
( 0 reviews ) Germany

Projektin tunnus: #13165950

26 freelanceria on tarjonnut keskimäärin 2348 € tähän työhön

MikroStar

hi, i am an electrical engineer. i have expertise in embedded system design and Matlab.i can help you with this project. Kindly reply back and let us discuss project further. regards

2000 € EUR 6 päivässä
(28 arvostelua)
7.2
chandra2sekhar

Hello, I am [url removed, login to view] sekhar,[url removed, login to view],[Phd].we have 12+ years experience in this field.i can assure u support and service even after completion of [url removed, login to view] have inhouse PCB design and [url removed, login to view] the provided inform Lisää

1500 € EUR 5 päivässä
(17 arvostelua)
6.6
seshupower

Hi, I am a post graduate power electronics engineer and having very good experience in product design and development. I am excellent in embedded programming using pic, dspic controllers and MATLAB codding for Power p Lisää

2500 € EUR 30 päivässä
(10 arvostelua)
5.8
geekyexperts

Hello, I am an Electronics and Embedded system developer. I have experience in Digital and Analog electronic design and Matlab. i can help you with this project work. i have developed many products based on Atmega328P Lisää

2000 € EUR 12 päivässä
(25 arvostelua)
6.3
A2Design

Hi, Nice project you have there, let us help you with it! Our team is Russian-Canadian. We code in PHP. Check our recent projects here [url removed, login to view] Here’s a little video about our team too! ht Lisää

3188 € EUR 31 päivässä
(2 arvostelua)
5.8
EEmbedded

A proposal has not yet been provided

2000 € EUR 20 päivässä
(14 arvostelua)
6.1
DamithaKD

HI, About the Project : We have developed similer projects before Can we talk about the project :) About ME : We have been freelancing for 10 years and has perfect reviews on all my projects. We am are Ex Lisää

2647 € EUR 30 päivässä
(17 arvostelua)
5.3
iTinkerBell

Hello. I have extensive experience with ATMEGA and GSM, and of course, debugging. I have finished several embedded system projects using ATMEGA. I think I can help you Thank you.

1764 € EUR 30 päivässä
(5 arvostelua)
5.1
CoherentTech123

Hello Dear, We are a team of experts with a cumulative experience of more than 50 years in the field of embedded, electronics, prototyping and pcb layout. We work on 8-bit, 16-bit and 32-bit architectures develo Lisää

2500 € EUR 30 päivässä
(22 arvostelua)
5.3
shahbaz1980

Hello, Have a great day. We will ship you fully working and tested prototype as it is much easier to build new device rather then finding troubles and killing them one by one . Most of the time bad routing on PCB ca Lisää

3000 € EUR 45 päivässä
(13 arvostelua)
4.9
espsofttech

Hello respected client, Hope you are doing well. I have gone through your project requirement. I can build this app as per your needs with great perfection in timely manner. I have 5 year experience in app developme Lisää

2368 € EUR 30 päivässä
(3 arvostelua)
4.8
yhaat

Hello: I am perfect for this project. I can understand pain of Atmel microcontroller with Atmel Studio! Please feel free to take me to the Interview. I have experience of 8 years. Thank you, -Sam

2000 € EUR 10 päivässä
(15 arvostelua)
4.7
ibrahimdanish

Hi, I am very much interested in your project as I believe I have the expertise, knowledge, skills and tools to do your project. I am embedded software developer with more than 8 years of experience of professional Lisää

1500 € EUR 30 päivässä
(2 arvostelua)
4.6
gold2star

Hi, Dear Employer! How are you? I have enough experience on Mobile App development and Electronic Engineering. I read your description carefully and understand your requirements fully. I am really interested in yo Lisää

2500 € EUR 30 päivässä
(7 arvostelua)
4.7
hawkscodeaus

Hi, I can start work on your project immediately once you confirm me and i am also open for further discussion if you want. I have 7+ years in web designing & development with good experience in following skills Lisää

2000 € EUR 30 päivässä
(3 arvostelua)
4.4
1529 € EUR 30 päivässä
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3.6
shivmirthyusl

"IT FLEX SOLUTIONS has focused exclusively on the Web Development/Designing projects with 10+ years of service. Our Web Development/Designing expertise has helped clients to create e-commerce, social networking, real-e Lisää

2705 € EUR 30 päivässä
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2.6
2000 € EUR 30 päivässä
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1.4
2500 € EUR 30 päivässä
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0.0
DesignExperts360

Senior App Programmer, Web & PowerPoint Expert I am a .NET developer with a Bachelor of Science (B.S.) in Information Technology from Bulacan State University and 23 years of software development experience I am e Lisää

2500 € EUR 30 päivässä
(0 arvostelua)
0.0