Advice re ftp download using SIM900 and STM32 controller

min €36 EUR / hour

Zamknięte

Opublikowano

ponad 11 lat temu

min €36 EUR / hour

We are working with a battery powered remote monitoring device that uses a STM32F100CB controller and a SIM900 GSM modem. We are seeking to implement a FOTA capability, by allowing the STM32 to download new firmware (c 50k) from our server via ftp through the SIM900 device. The new firmware, once downloaded, is written to external I2C EEPROM and from there it may be used for replacing the existing firmware, subject to certain checks being passed. Our current issues are: FTP dowload is taking way too long (c 10 minutes). We do not understand why, though we suspect the writing to EEPROM via I2C is the main culprit. We are wondering whether it is possible to write the new firmware directly to the internal flash of the STM32? We seek to resolve these issues by consultancy via an online meeting. FTP download is t

Identyfikator projektu: 2660133

Informację o projekcie

7 ofert

Zdalny projekt

Aktywny 11 lat temu

Szukasz sposobu na zarobienie pieniędzy?

Adres e-mail

Korzyści ze składania ofert na Freelancer.com

Ustal budżet i ramy czasowe

Otrzymuj wynagrodzenie za swoją pracę

Przedstaw swoją propozycję

Rejestracja i składanie ofert jest bezpłatne

7 freelancerzy składają oferty o średniej wysokości €39 EUR/godz. dla tej pracy

@betaenergy

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of hardware For each concept descriptions are as follows: Digital Motor Control: -3-phase induction motor vector control drive -Flux estimation algoritm generation -DSP(TMS320) implementation on motor drive -Low speed application -Torque and speed loop generation -Control algoritms Analog design -Low power distribution -Noissless special opamp based analog circuits -Analog filters -Orcad simulation of several circuits Electronic Design -RF transmitter and receiver -Bluetooh reader and transmitter -Magnetic reader Power Electronics -Implementation motor drive -AC/DC converter -DC-DC converter -Battery charger -Solar inverter -Renewable Energy simulations -Uninterruptle power supplies PCB design -Schematic design by Altium -PCB design by Altium -Power board design -SMPS board design Embedded system -PIC18,PIC24,PIC30 and dsPIC applications -Ardino -MSP430 -Atmel -DSP(Texas Instruments) -Renesas Matlab -Power Electronics simulation -Motor drive -Wind Energy -Solar Energy -Control applications Simulation of Hardware -Orcad Simulation(TI,National, Linear Tech, Maxim libraries) -LTI -National -Matlab Very important Note: References attached. Please look excel file to see projects which we made until now! Metin

€36 EUR w 20 dni

4,5

(9 opinii)

4,6

@MikroStar

hi, i can help.

€40 EUR w 20 dni

4,8

(10 opinii)

4,4

@codeembedded

I'm very experienced with STM32 family of microcontrollers from STMicro, and did lots of projects with them. I have some really good ideas which will I guess solve your problem. I'll propose you a few methods to speed your FOTA. After my work if you are not satisfied you are free not to pay me. Hope to hear from you.

€50 EUR w 1 dzień

5,0

(1 opinia)

3,9

@Comsytec

If you decide for us please explain more about this project.

€36 EUR w 45 dni

0,0

(0 opinii)

0,0

@Mq217PVHa

Custom software development: w w w . The Administrator removed this message for containing contact details which breaches our Terms of Service . i o

€36 EUR w 1 dzień

0,0

(0 opinii)

0,0

@embfocus

we are a embedded company and we offer end to end software development sevices, consulting and outsourcing projects on Android, Embedded linux,ARM, DSP and Embedded.

€36 EUR w 48 dni