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by Heater
Tue Oct 16, 2018 2:41 pm
Forum: Beginners
Topic: Attendance system with PI
Replies: 2
Views: 59

Re: Attendance system with PI

mariadb, node.js, react.js, bootstrap.
by Heater
Mon Oct 15, 2018 2:59 am
Forum: Raspbian
Topic: Is it Time to force Raspbian password change on initial login
Replies: 39
Views: 1044

Re: Is it Time to force Raspbian password change on initial login

One aspect of the security thing that has not been mentioned here is that it's not all always about the bad guys getting access to your network and your data exactly. A growing problem has been the bad guys being able to use your machines as a means to attack others or do miscreant things on the net...
by Heater
Mon Oct 15, 2018 2:39 am
Forum: Off topic discussion
Topic: Design your own 8$-RISC-V (may work with your pi)
Replies: 12
Views: 446

Re: Design your own 8$-RISC-V (may work with your pi)

mic_s, a low number of the required LOC (Verilog or SpinalHDL or ...) for your rv32i-core is a measure for „doable“ in a short time frame. Quite so. I'm really liking SpinalHDL as it is so much nicer to be able to design logic in a nice readable, expressive, high level language than Verilog or VHDL....
by Heater
Sun Oct 14, 2018 4:21 pm
Forum: Off topic discussion
Topic: Design your own 8$-RISC-V (may work with your pi)
Replies: 12
Views: 446

Re: Design your own 8$-RISC-V (may work with your pi)

I'm not sure we should worry about LOC so much. It's FPGA usage that matters at the end of the day. My RISC V core source code is kind of verbose, in order to make it clear to the human reader, but it all boils down to nothing when synthesized. I'm very sure these compilers do a better job of minimi...
by Heater
Sun Oct 14, 2018 8:53 am
Forum: Raspbian
Topic: Is it Time to force Raspbian password change on initial login
Replies: 39
Views: 1044

Re: Is it Time to force Raspbian password change on initial login

wh7qq, I don't like the Gov. telling me... So you won't like the news that it will be illegal to sell Raspberry Pi in California after 2020 unless every one comes with a unique username and password and “contains a security feature that requires a user to generate a new means of authentication befor...
by Heater
Sun Oct 14, 2018 6:52 am
Forum: Off topic discussion
Topic: Design your own 8$-RISC-V (may work with your pi)
Replies: 12
Views: 446

Re: Design your own 8$-RISC-V (may work with your pi)

fanoush, Thanks for the heads up on darkriscv. Wait a minute, a bit of exaggeration going on there, darklife does go on to say "after weeks of exciting sleepless nights of work...the darkriscv reached a very good quality result, in a way that the "hello world" compiled by the standard riscv-elf-gcc ...
by Heater
Sun Oct 14, 2018 6:28 am
Forum: General discussion
Topic: Cannot copy SD - no "copy to " selection.
Replies: 10
Views: 371

Re: Cannot copy SD - no "copy to " selection.

What we would like to know is: Why does this work for other people but not for you? Why do some people say it sometimes works depending on the card or card formatting on phase of the moon? I'm not suggesting you are doing anything wrong but clearly there is something different in the situations. Wha...
by Heater
Sat Oct 13, 2018 10:46 pm
Forum: Off topic discussion
Topic: Design your own 8$-RISC-V (may work with your pi)
Replies: 12
Views: 446

Re: Design your own 8$-RISC-V (may work with your pi)

I think the idea has lots of possibilities. I got a picorv32 core running on DE-0 Nano board a year ago. https://github.com/ZiCog/xoro As I was new to Verilog I just cut out the picorv32 core and started surrounding it with my own memory and peripheral interfaces. Didn't take much time at all to get...
by Heater
Sat Oct 13, 2018 8:11 pm
Forum: Off topic discussion
Topic: Design your own 8$-RISC-V (may work with your pi)
Replies: 12
Views: 446

Re: Design your own 8$-RISC-V (may work with your pi)

I started my own RISC-V implementation back in April. There is no way that it's going to be completed by the closing date of this competition. https://github.com/ZiCog/sodor-spinal Not that my humble effort would compete on speed, it has no pipelinning or caches etc. I'm sure someone could find a wa...
by Heater
Sat Oct 13, 2018 10:29 am
Forum: C/C++
Topic: compilation error in raspberry pi 3
Replies: 4
Views: 170

Re: compilation error in raspberry pi 3

Well, you have the source code to both libraries. Or you can get it. Then you can change the name of one of those functions and rebuild it. Or delete the one you don't want. Or you could be sneaky. Compile your project as C++ instead of C. The two functions have the same name but different parameter...
by Heater
Sat Oct 13, 2018 2:38 am
Forum: Other
Topic: makefile problem (freeBSD)
Replies: 9
Views: 316

Re: makefile problem

That's great.

Would be nice if you would say what the problem actually turned out to be and what you changed to fix it.

Ending a thread like this is like reading a detective novel only to find someone has torn out the last page!
by Heater
Fri Oct 12, 2018 5:31 pm
Forum: Other programming languages
Topic: golang?
Replies: 17
Views: 24140

Re: golang?

fkirill, * GoLang cannot in theory be faster than C/C++ due to the language/standard library features like automatic memory management, dynamic coroutine scheduling etc. I know what you mean. One can write C++ code that uses no threads or dynamic memory allocation. In fact I have compiled such C++ c...
by Heater
Fri Oct 12, 2018 5:09 pm
Forum: General discussion
Topic: Raspbian or what ? ( semi rant)
Replies: 18
Views: 778

Re: Raspian or what ? ( semi rant)

AnneCreek, OK, i'll say it again. This post was not met to be "issue solving" post. I know better. Ah sorry, I misunderstood, you do not want help on a help forum. You are just having a rant. Thank you for saying so, before we waste anymore time trying to help you. Seems you know better so I guess y...
by Heater
Fri Oct 12, 2018 12:15 pm
Forum: General discussion
Topic: run the program
Replies: 2
Views: 89

Re: run the program

If you want to run a command line only program, no graphical interface, keyboard or mouse, from system startup the modern way to do it is to get the systemd init system to start it for you. To achieve this one need only create a short and simple "service" text file that tells systemd what to run, wh...
by Heater
Fri Oct 12, 2018 11:48 am
Forum: General discussion
Topic: How can you prove raspberry pi 3B+ is suitable for industrial and stamping factory environment?
Replies: 11
Views: 346

Re: How can you prove raspberry pi 3B+ is suitable for industrial and stamping factory environment?

abouhaa, If the PI is suitable for such work environments, how can I prove/convince my team? It is of course impossible for us to advise on that without details of a specific application and environment. However that won't stop me making some general observations: The Raspi is a consumer device. Lik...
by Heater
Thu Oct 11, 2018 9:23 pm
Forum: General discussion
Topic: Production use for Raspberry
Replies: 2
Views: 104

Re: Production use for Raspberry

Any particular reason we cannot discuss your project here?
by Heater
Thu Oct 11, 2018 7:10 pm
Forum: General discussion
Topic: Raspbian or what ? ( semi rant)
Replies: 18
Views: 778

Re: Raspian or what ? ( semi rant)

AnneCreek, I have been using Raspbian Stretch on the Pi since it was released. Also Debian Stretch on all my Pi, PC's and cloud servers. It works very well and has been reliable. Now, there may have been some changes to the way things are configured in Stretch and hence some tweaks you have to do. I...
by Heater
Thu Oct 11, 2018 10:40 am
Forum: General programming discussion
Topic: web server connection with vnc interconnection
Replies: 1
Views: 80

Re: web server connection with vnc interconnection

What, people still use java applets?
by Heater
Thu Oct 11, 2018 10:36 am
Forum: General discussion
Topic: RS485 Communication with Pi Compute 3L
Replies: 7
Views: 163

Re: RS485 Communication with Pi Compute 3L

moksha29, We have no permission to access your google drive. ...there is no such library or driver support for MAX485-TO-PI communication. Why would you need one? Once you have configure the GPIO UART properly it will send and receive data by writing and reading to it's device in /dev (Sorry I forge...
by Heater
Wed Oct 10, 2018 10:23 pm
Forum: General discussion
Topic: under voltage detected
Replies: 19
Views: 402

Re: under voltage detected

The happiest Pi I have is run from a 5v supply that can deliver 4 amps. But this supply can be tweaked up and down a bit by winding a trim pot. Turns out the Pi is happiest when the supply is outputting 5.3 volts or so. It amazing how much voltage can be lost through short lengths of cheap skinny US...
by Heater
Tue Oct 09, 2018 8:17 pm
Forum: General discussion
Topic: Why sell a 7" screen?
Replies: 69
Views: 1647

Re: Why sell a 7" screen?

Njord, From your link... The good news is that the vast majority of monitors now use DC (Direct Current) instead of PWM to modulate backlight brightness I think we can be very sure that the "Direct Current" of which they speak is generated by a switched mode power supply. That is to say PWM. Sure it...
by Heater
Tue Oct 09, 2018 1:17 pm
Forum: C/C++
Topic: RPi losing bytes from custom sensor(Atmel microcontroller) over UART
Replies: 8
Views: 195

Re: RPi losing bytes from custom sensor(Atmel microcontroller) over UART

In the world of serial port communications there is no concept of "packet" of data or message. It's just a stream of bytes arriving over the line. When you do a read of the serial port you will get back whatever number of bytes are currently available. Which may start at any position within the data...
by Heater
Tue Oct 09, 2018 12:42 pm
Forum: General discussion
Topic: Please update raspbian ISO a little bit More often , and add rss feed for updating.
Replies: 6
Views: 223

Re: Please update raspbian ISO a little bit More often , and add rss feed for updating.

Generally "apt-get dist-upgrade" is a lot more exciting than most TV. Even without the sound effects.
by Heater
Tue Oct 09, 2018 12:29 pm
Forum: Other
Topic: makefile problem (freeBSD)
Replies: 9
Views: 316

Re: makefile problem

Given that you have all the object files what happens if you run the last step of the build manually: $ cc -o fase1 main.o antispam.o ops_timeval.o -O2 -pipe -std=c89 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Wpointer-arith -Wdeclaration-after-statement -Wformat -Wformat...
by Heater
Tue Oct 09, 2018 10:07 am
Forum: General discussion
Topic: Please update raspbian ISO a little bit More often , and add rss feed for updating.
Replies: 6
Views: 223

Re: Please update raspbian ISO a little bit More often , and add rss feed for updating.

I'm curious...

Is there some new feature of the latest kernel that you need?

Or is there some bug/issue with the current kernel that is causing you problems?

In short, why the need for a newer kernel in such a hurry?

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