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play snake game online for free NOTE: Submissions of project abstracts are done via BILDA.
The objective of the mini project is to let the students work in groups of play games for free now on a self-selected project during the whole semester.
We encourage that students within a group collaborate; however, in the source code, it must be explicitly declared who authored which code.
You are allowed to collaborate between groups, but each group must make a separate project.
Equipment The project should be done on a or a development board together with a shield see manuals on the Literature and Resources page or other electronics that are connected to the board.
The students may borrow these boards during the whole semester.
Hence, all development should be done at home or at KTH's computer rooms.
The project must make use of this hardware, but it is absolutely allowed and encouraged to add more hardware and electronic equipment these boards are compatible with some shields.
However, any additional hardware needs to be purchased by the students themselves.
You do not need to buy any more hardware to make a project that can pass the course examination, but if you do, the project can be even cooler!
Prestudy Phase We considers the time until the submission of the DRAFT extended abstract see below the "prestudy" phase, click that this is the time when you in the group can play around with the board and test different project ideas.
However, during this time, you need to decide on what you want to do in the project.
You may discuss different ideas at the lectures with the teaching assistants or during the lunch office hours.
What kind of project can we make?
It is very flexible and it is up to you what you want to do.
For inspiration, see for instance these pages: 1 2.
Solve an interesting everyday life problem.
See for instance 1or 2 search on.
Note that we do not provide any explicit project proposals.
It is part of the task to figure out the requirements of a project you want to make.
The reason is that you should learn about low level programming in this project.
If you are aiming for the highest grades grade A or grade Byou need to do an advanced project.
That is, if you have done an advanced project and scores an A or a B on the written exam, you get the final course grade A or B.
If you get points corresponding to A or B on the exam, but you have done a basic project, you get a grade C on both the exam and the final grade.
Hence, if you do a basic project not an advanced you cannot get a higher grade than C.
Note also that the ability to use the advanced project to get a higher grade is only valid on the ordinary written exam and the two following retake exams.
Your application has a non-trivial logic.
Examples that do not qualify as advanced projects, but would be enough for a basic project.
Your program is using buttons and some other input device, for instance the temperature sensor.
You are using interrupts and timers as part of the logic in your program.
Note also that it is not OK to have a lot of code duplications of if-statements etc.
In general, if you start to copy and duplicate your own code, then you are doing something that is not very good.
When you write your DRAFT abstract, it is important to clearly state if you aim for an Advanced project or not.
Please state this clearly in the beginning of PDF-file that you submit.
By doing so, we can give feedback if we believe that your proposal can be counted as an advanced project.
Note also that it is not until the actual Expo we examine the project and decide if the project can be counted as advanced.
If you have any questions, please do not hesitate to come and ask David about your project ideas during the lecture breaks.
Extended Abstract As part of the examination of the project, each student group shall submit an extended abstract.
This is an example of the DRAFT abstract that should be submitted in the middle of the course.
It is not a real student project and should only be seen as an example of how an abstract can be written.
Note that you may write the extended abstract in either English or Swedish, but not a mixture of the two languages.
Submission The submission of the abstract is divided into two important milestones.
Please see the deadlines at the end of this page.
The deadlines are also summarized on the page.
The draft should include 1.
The final version should explain what you have done in the project, not what you will do.
That is, the requirements and the proposed solution MUST NOT be a copy from the DRAFT.
Please make sure that the final version does not contain sentences like "We will do.
This should be part of the DRAFT, but not the final version.
You submit your extended abstract as a PDF-file.
If you are two members in your project, only ONE of you should submit the abstract not both of you.
Note also that it is very important that you include both your names and your personal identification numbers in the PDF-file.
Examination and Feedback on the Abstract We will provide feedback on the DRAFT and the final abstract approximately one week after the submission.
NOTE: You must login to KTH social and check if you passed the submission and to see the actual feedback.
The system cannot send out an email.
I will, however, create a post on the course webpage when the information is available.
Collaboration and Contributions In the project, you should collaborate.
However, it is important that both of you have approximately done 50% of the actual coding.
It is not allowed that one student is writing the abstract, and one student is doing the coding.
It is allowed to program together, but both of you must be sitting with the keyboard and actually write the code.
Exhibition All students present their projects at an exhibition that will take place at the end of the course see the schedule.
There will be nominations and awards for the best projects.
All the labs in the course are using this environment.
The main benefits with this environment are i that it is completely command line based, ii it does not hide hardware play snake game online for free, and iii it does not need a PICkit programmer, as the MPLAB X IDE requires.
This is the environment that most students will use in their projects.
It is possible and allowed to use this environment when you develop your project, but you need to buy a or a to be able to use it.
You will also need to download their There is a free version, which only has limited optimization capabilities enabled.
It is a fork of the Arduino development environment.
In the project work in this course, you may use this environment to explore different hardware techniques, but your final project is not allowed to be developed in MPIDE.
The reason for this is that it hides many hardware concepts, which is part of the learning objectives of this project!
The MIPDE development kit can be.
To get started, you can download a.
The teaching assistants will help you with technical questions.
Please feel free to ask questions about the project.
This section includes a lot of relevant information for the project, e.
That is, it is allowed to use the lab code, as long here you clearly declare in the code the parts that you have developed.
Project EXPO Before the EXPO Before the EXPO, you should make sure that your project works correctly, and that your source code includes comments of what you have done in the code.
You should also practice a short DEMO presentation of your project.
That is, you should be prepared to explain and demo your project for approximately 5 minutes.
Please make sure that all team members are part in this demonstration.
You must also bring a paper copy of your final extended abstract to the EXPO.
At the EXPO Teachers and teaching assistants will walk around at the expo and ask for a demonstration of your project.
We will ask questions about the project itself, challenges you had during the project, and how you designed and implemented the project.
The project must be running, so you need to provide all equipment that you need of the demo.
You should also be prepared to show source code of your project.
At this oral presentation, we will judge if you have passed the project.
NOTE: The EXPO takes place in a standard classroom and not in a computer lab.
This means that you will need to get the project to work either with your own computer, with a friend's computer, or with no computer.
In the last case, you will need to bring your project, including source code, on a USB stick.
There will be power supply available for the computers.
We will select certain projects for nominations as "best projects".
In such a case, we will take a photo of your project, if you allow it.
Note that this nomination is not connected to any grades in the course.
Note also that we encourage you to walk around at the expo and check out other students' project work.
You must be present at the whole 2h session see belowbut you are very welcome to join and look around at the other sessions as well.
After the EXPO We will collect all the ChipKIT boards and we will check a list to make sure that you have returned the equipment.
Booking You should select one time slot where you present your work.
The booking is done in Daisy.
Please note that only one of the students in a project group should book a slot in Daisy.
Note also that you are expected to participate in the whole session.
Hittar inte länken till Assignments för att skicka in mini projekt draft?
Finns den uppe eller är jag blind?
Hi Erik and Thomas, I answer in English because several of the students that are taking this course do not understand Swedish.
I just realized that the submission was not visible.
It should be available in the lower left part of the course website now.
Does it work for you now?
Best, David Hi Kevin, In the instructions above on the "mini project "page it says " You submit your extended abstract as a PDF-file by selecting "assignments" in the lower left menu on the course page.
You need to be registered to the course to be able to see this tab.
Best, David Hi, how are you supposed to get access to the functions malloc and free in the toolchain for the pic processor?
Do I need to change some linker setting for the compiler?
With the normal c compiler my program compiles just fine, but then I can't put it on the chipkit board.
Hannes: Code that is compiled for the Uno32 board is compiled as freestanding, that is, without a C library.
Most parts of the C-library require an underlying operating system, something that is not present on the board.
You will most likely be able to re-write your code not to rely on malloc, but instead define your arrays at compile-time as global or local variables of fixed size.
In the latest version of mcb32 version 2.
To use this library you need to add -lc to the end of the LDFLAGS line in the Makefile.
There is a version of malloc in this library, but it does not behave the same as the regular malloc function, nor has its functionality been tested at all.
I therefore strongly advise you not to use malloc but instead define all your arrays and variables at compile time.
Jag har några frågor angående mini projektet, står en hel del på hemsidan men, - vad är det som räknas som avancerat projekt.
Enligt hemsidan går det att koppla in sensorer, lampor, och så vidare.
Räknas det som ett avancerat?
Om jag skriver enkelt och upptäcker genom projektets gång att det är bökigare och det går mot avancerat.
Går det då att konvertera?
Hi Gustaf, I will respond in English, so that all students get the message.
Your question concerns what is counted as an advanced project.
On the course play snake game online for free, I describe it learn more here, but in the end it is a judgement that can only be made after reading your proposal.
When you submit your DRAFT deadline tomorrowplease indicate if you claim that this will be an advanced project.
If so, we will take a look at what you describe in the project, and then give feedback if it can be counted as an advanced project or not.
We can also suggest what you need to do so that it is mobile realistic games for computer the as an advanced project.
Your question is if it is possible to change to and advanced project during the project.
In the end, if it is counted as an advanced project or not will be determined at the project EXPO.
Best regards, David This mini-project, is that graded as a part of the written exam?
I already completed the written exam in a previous year, so am I required to do the mini-project?
If the course registration had went smoothly and such I would have done the project either way, because it's fun and I like hardware programming.
But now, even though I've done all the preparations for Lab 1 and 2, that I could do without the hardware, I feel a bit pressured for time and if I'm not required to do the mini-project I'd rather focus on getting the labs done properly once I'm registered for the course that is.
Dear Robin, Please see the info in the course PM:.
It says: "The course contains two parts, which are reported into LADOK separately.
This part is reported as P pass when the student has passed Labs 1,2,3,5 and received a pass on the project.
This part is reported after finishing the written exam.
Note that it is unblock games school to write the exam several times to get a higher grade.
The final grade for the course is given when LAB1 and TEN1 have a pass grade.
The final grad is the grade of TEN1.
You must do the project even if you already have finished the written exam.
We have a queue for getting the hardware.
Contact Gunnar Johansson to sign up if you have not done so already.
Have a nice weekend, David Hej!
Jag har problem med "make install" kommandot.
Då jag kör kommandot laddas allt ner som det ska men jag får ett felmeddelande: mipsel-mcb32-elf-avrdude: verifying.
Med vänlig hälsning, Ida Grünwald Hej!
Jag har börjat om mitt projekt eftersom jag hade fått några problem.
När man ändrar variabel x så får man ett objekt att förflytta sig.
Men jag undrar hur kan man göra så att ett objekt förflytta sig fram och tillbaka eventuellt i sidled när man trycker på knapparna.
Jag har försökt med if-satser och implementation som vi anände i labb 3 men det händer ingenting.
Hur går man tillväga?
I slutrapporten hur detaljerad ska den vara?
Ska man ta med exempel från programmet eller ska man vara mer generell i lösningen?
Jag och Frida har problem med microchipet, när vi kör "make", "make install" reagerar chipet olika trots att vi använder exakt samma kod utan justeringar i koden.
Hur ska vi gå tillväga, är det fel med microchipet?
Mvh, Ida Grünwald Hej, om jag förstår det rätt får ni alltså olika resultat när ni kompilerar och installerar samma kod från två olika datorer?
Prova att köra "make clean" först en gång för att rensa ut om play snake game online for free finns några objektfiler kvar.
What I am curious about is this: What doe the various constants that are being sent mean exactly?
I cannot find any details with regards to which constants would dictate font, colour, size, whatever.
So far I have looked in the IOShieldOled folder, Basic IO shield rm and UNO rm not that I believe that any details would exist in the latter two but it was worth a shot.
Please let me know if you have any extra information I could look through!
Regards Nicholas Hejsan, vi har eventuellt stött på ett problem, vi får nämligen verification error som många andra har kommenterat om nu helt plötsligt, saken är bara den att det fortfarande går att installera och programmen körs som de ska, vi vet dock inte om vi fortfarande borde flasha om den för att vara 100% säkra?
Hej Sebastian, ni får välja själva.
Å ena sidan: don't fix it if it ain't broken Å andra sidan: better safe than sorry Vill ni flasha om bootloadern hemsk svengelska egentligenring mig på 08 790 4147.
Hej Nicholas, För att tolka SPI-kommandona behöver du titta i databladet för teckenfönstrets styrkrets display-kontrollern på svengelska.
Vad den heter står i Basic IO Shield Reference Manual, men själva databladet får du googla fram.
That is, after we have completed and showed the school required one.
Nicholas: The commands are documented in the datasheet of the display controller.
If you look at the datasheet of the Basic IO Shield, you will find the name of the display controller: SSD1306.
A search for this number and you will find the datasheet documenting all the commands.
Please note that while I do encourage you to have a look at the datasheet and poke around with the display, sending commands and trying things out, I would recommend you to not change the initialization sequence of the display since this can actually physically damage it according to the datasheet.
Then i also need to use the digital signal connectors on the shield but I can't find any corresponding register for them either.
Please help : Hi, if you look at the pin header beside the push buttons you will find the following markings: RST 3v3 5v0GND.
Here, 3v3 means 3.
They are always connected to the power supply as long as the board is powered up.
Jag finns det någon som skulle kunna flasha om ChipKit idag?
Vi har stött på verifieringsfel vilket verkar sabba hela vårt program.
Detta kom väldigt olägligt.
Om flera läser detta och behöver få sina labbkort flashade, kom gärna samtidigt.
Hiss A plan 4 i Electrum.
Om man inte var med på EXPO finns det då någon möjlighet att visa upp sin projekt på någon av extra lab tillfällena eller får det bli nästa termin borta på Campus?
Hej Dino, Om man visste innan att man inte kunde vara med på EXPO:t så skulle man kontakta mig innan EXPO:t och redovisas för mig personligen innan EXPO:t, inte efter.
Det är grupper som gjort detta.
Om du av oförutsett anledning inte kunde komma, t.
I så fall kan vi göra ett undantag och du kan göra redovisningen för mig personligen.
Om du däremot missat det av annan anledning eller inte hunnit klart så är andra och sista chansen att redovisa projektet i höst December tillsammans med EXPO:t som går för kursen IS1500 inne på campus i stan.
Hälsningar David Hi, I didn't complete the labs and the project during spring 2018, I would like to experiment on my own this summer and intend to buy the uno32 board but I've been looking around and it is no longer manufactured.
Digilent encourages migration to the uc32 that is almost the same but with a PIC32MX340F512H processor instead of PIC32MX320F128.
Will the uc32 work with the mcb32tools or must one have the now retired uno32?
Thanks in advance, Marvin Koselnik Hi Marvin, I'm sorry, but our current software does not work at all with the Chipkit uc32.
We are investigating a migration to the uc32, but we cannot make any promises at this time.
Best regards, F Lundevall Alright, thanks for the quick response.
I did some research and found one uno32 on amazon.
It will arrive in three weeks.
Regards, Marvin Hi, I finally have the Uno32 board and have failed with make install trying to do Lab.
I read that I might need to fix this with a new bootloader with special hardware.
When is it possible to get help for this?
Regards, Marvin Koselnik Hi Marvin, I think everyone is on vacation now including myself.
Unfortunately, I am not sure that anyone can help you before the middle of August.
You can perhaps send an email to and then Gunnar or Fredrik can help you when they are back from their vacations.
Have a nice summer, David Hi David, Thanks a lot but now I fixed the problem.
I didn't have the right permissions to use the serial port on Ubuntu 16.
So now I have worked through lab 2 and started preparing lab 3.
Have a nice vacation, Marvin Hello, I am having trouble getting the PWM to work.
I have also tried switching between different values for the dutycycle and periodregister.
Any input on how i can get this to work?
Hi Tomas, Just a simple check: did you try connecting the light to a standard digital output, to make sure that the output voltage and current from the Uno32 is enough to make the light shine?
Best regards, F Lundevall Hi, Yes, we have.
Our real goal is to get a passive summer to make sounds, but we figured a light is a better indicator for whether or not the PWM is working.
Also, the code found in the reference-manual for the output-compare seems to be dependent on a peripheral-lib which i dont have, so i find it rather hard to get any help from there.
The code i just wrote is based on the course book.
Which manual are you looking at, is it the DS61111 from microchip?
From what I can see in your code, you are not setting up any timer.
The output compare module needs to be connected to a timer which will actually increase the counters of the output compare.
If I recall correctly, you also set the period of the output waveform by setting the timer period, the duty cycle you set in the output compare module.
I do not achieve any result with a light, a passive summer or a multimeter.
I believe the problem might lie in how i implement interupt-handling, and since its been about a year since i did the lab3 i am kind of rusty in that department.
Can i achieve the same result by checking for a flag in the register using an if-statement?
However, I would strongly recommend you to use interrupts instead.
In the zip file provided file for lab 1, time4mips.
S which is used for interrupts.
Parts of the file have explanatory comments and it might help to read those.
Furthermore, you need to enable interrupts not only for specific components, such as timer 2, but also globally.
Information about how that could be done is given in the third assignment of lab 3.
Kan inte lämna in Draft.
När jag trycker på "Ladda upp inlämningsuppgift" står det här: När jag trycker på "Nästa" står det: Någon som kan hjälpa till?
Hej William, Det var väldigt konstigt.
Det verkar vara något fel på IT-systemet och KTH social.
Jag har rapporterat felet till KTH IT-support.
Jag återkommer så fort jag fått svar från den.
Tack för att du uppmärksammade detta!
Hälsningar David Hej igen William, Nu har jag fått svar från IT-support och problemet ska vara löst nu.
Försök och skicka in igen nu.
Hör gärna av dig igen om det funkade eller ej.
Hälsningar David Hej William, Konstigt.
Får du samma meddelande?
Är det någon annan som har försökt?
När jag som lärare testar och laddar upp ett dokument nu så fungerar det bra.
Jag kontaktar IT-support igen.
Hälsningar David Samma problem med inlämningen av Extended Abstract Draft för mig med.
Finns det någon uppskattning på när problemet kommer vara löst?
Hej Johan, alla, Jag har varit i kontakt med KTH IT-support igen och de pratar nu med deras utvecklare.
Jag återkommer med mer info så snart som möjligt.
Om problemet inte är löst senast på fredag så kommer jag i så fall justera deadline:en.
I and Erik Larsson would like some advice regarding our Mini Project.
We are planning to build a digital implementation of the early analog electronic musical instrument, the theremin: Now, instead of using antennas like the original theremin, we planned to use some other kind of distance sensor.
We have mostly been looking at ultrasonic sensors, because they seem somewhat straightforward to work with, but the best resolution we have been able to find is 1mm, and we don't think that is good enough.
As you can see in the above video, the produced frequency of the audio output varies continuously with the distance between the right antenna and the operators hand same for ampitude and left antennaor at least the resolution is great enough that we do not notice any discrete steps in the output.
If we could find a sensor with an accuracy of about 0.
Do you know of any ultrasonic sensors, or other types of sensors, with that kind of accuracy?
Something that works in the intended range ca 0-1 mand is also reasonably priced?
I guess we could use capacitive antennas like the original, but that is all very physics:y and we don't quite understand it.
Any advice is greatly appreciated.
We might have come up with an adequate solution for my question above.
If we use sensors with a resolution of 1 mm and also implement a post-processing subroutine that "smooths" changes in the sensor readings before they are used for wave generation we think we will be able to get a satisfying result.
Still, any suggestions for accurate and practical sensors are still very much appreciated!
Roderick Tack, kul att du gillar idén!
Ultrasonic distance sensors should work OK, there have been some similar and rather successful projects in years past if I remember correctly.
Like you say, capacitive sensing is also an option.
A fairly simple way to do capacitive sensing is to use two GPIO pins, a very high value resistor megaohm range and your capacitive antenna.
You use one pin as a pulse output and the other pin as the input.
The resistor connects between the two pins and your antenna to the input pin.
You then send a pulse on the output pin and measure the time it takes for the input pin to register the pulse.
This works by letting the capacitor charge up very slowly through the high value resistor until the voltage becomes high enough that the input is triggered.
The larger capacitance, the longer it takes to charge up.
You can probably find more information on this online.
Good luck, Axel Well, we found lot of somewhat successful similar projects online also, but most seem to settle for noticeably discrete pitch variation, which is a bit of a bummer.
That actually sounds pretty doable when you put it that way, we will have to consider it.
I think I get the principle behind it well, except the part about how waving our hands around actually changes the capacitance, but never mind that.
If you were to take a guess, which method do you think would give us the best results, ultrasound or capacitive sensing?
Thank you for the advice!
Were you the lab assistant that graded us yesterday by the way?
I don't know off hand which method will work the best in your case, it depends on the sensitivity and precision you can get with the capacitive sensor.
You'll have to try and see.
Regarding the lab, it was some other assistant.
I only have the lunch office hours.
That way we still have some time to switch to ultrasonic if it doesn't work out.
Maybe we can check in with you on the lunch office hour tomorrow Wednesday?
Hi, Where can i get the information about how to create an icon.
For example, if i want to create a ball?
Currently, it displays the little dog.
You can experiment with the data in the array, for example by changing one value to 0xff or 0x00, and see what happens.
The display controller splits the display into four pages.
Each page is 8 pixels high and 128 pixels wide.
Each vertical group of 8 pixels corresponds to one byte of data.
For more specific information, please check the documentation for the display controller SSD1306.
Best regards, F Lundevall Hi!
My guess is that it is ok as long as we manage the in-source credits and COPYING text file correctly, but it would be nice to have it confirmed.
Is it meant for us to try an extensive amount of values to display an image, font, object etc.
Best Regards, Daniel Anton, Yes, it is ok like you say if you make it clear in the comments who authored the code and that you have permission from the author to use the code The lab code is under a BSD license and is therefore OK to use Kangyoun, Trying different values in the array is one way of figuring it out, but I also recommend you to take a look at the datasheet for the display controller linked on the Literature and Resources page which should describe the memory layout of the display.
Skulle ni kunna förklara för oss vad siffrorna står för?
Vi ser att ni sparar tecken i textbuffer, och sedan skicka motsvarande data i font till kortet, men förstår inte riktigt vad det gör.
Varje byte motsvarar en kolumn som är 8 pixlar hög, en bit per pixel.
Fonten är lite specialanpassad till layouen på IO-shields skärm som är indelad i fyra textrader där varje textrad är 8 pixlar hög.
Det gör att det bara är att skicka 8 byte till displayen för att rita ett tecken.
Er skärm har antagligen en annan layout så ni kanske behöver konvertera font-arrayen till att funka på er skärm.
Ta också en titt här där originalbilden för fonten finns.
Behöver man skriva något i assembly för ett basic project?
Hello, my lab partner and I have a question regarding interrupts for the mini project.
In lab 3 we were all introduced to interrupts, and learnt how to set them up and make them work.
We think that external interrupts are going to be useful for what we are doing.
What we havn't understood, even after studying the reference sheets, is how we can assign a certain uno32 pin to an interrupt of choice.
For instance assign button one, BTN1 uno32 pin 4 to external interrupt 1, INT1.
During our endeavors we have found some interesting features, such as changing polarity of an external interrup, LATx, etc.
Instead, SW1 through SW4 are assigned to interrupt inputs INT1 through INT4.
For buttons and switches, polling is usually better than interrupts.
In particular, the processor may unexpectedly receive more than one interrupt per switch operation, due to contact-bounces.
You can use timer interrupts to make sure that polling happens regularly.
Best regards, F Lundevall Blenda: Det är okej att bygga vidare på sin labbkod och använda den som bas för projektkoden.
Att skriva något i assembly är inte ett krav per se, men ni kommer kanske behöva skriva någon liten assemblysnutt för interrupts eller liknande.
Oskar: Three of the four buttons are connected to pins with change notification CN functionality which should be able to cause interrupts the fourth button cannot interruptI think some groups in the past have used this.
You will find more about the CN functionality in the IO ports datasheet, but like Fredrik says, it's probably best to just use polling for the buttons.
Vi försöker koda en Analog-to-Digital-converter.
Då vi läser i boken bland annat och på nätet så används något som kallas för "AD1CON1bits", men när vi försöker kompilera kod med denna kodrad, så säger programmet att vi ej definierat detta.
Finns inte detta i filen "pic32mx.
Hej Niclas, Kodexempel med "XYZbits" byt XYZ mot vad som helst fungerar inte med vår labbprogramvara.
Den sortens kodexempel refererar till enskilda bitar med namn.
http://cardscasinoallin.top/games-for/play-candyland-board-game-online-for-free.html vår labbprogramvara får man använda maskning och liknande i stället.
Jag hittar inte information om vad som kommer returneras.
Jag har problem med att förstå hur alla kommandon fungerar på SSD1306 Display Controller databladet.
Hur ska man tolka dessa kommandon och hur ska man skriva dessa kommandon till displayen.
Databladet nämner många olika hexadecimala värden med h efter, t.
AFh, D8h som tillhör olika funktioner.
Vart skickar man in dessa värden eller hur tolkar man denna information?
Vi använder oss av en extern skärm till spelet som vi skriver.
Vårt problem är att skärmen verkar slå ut 1 av de fyra knappar som finns på sheilden låser sig till antingen 1 eller 0, trotts att knapparna och skärmen använder olika portar.
Alla knappar fungerar korrekt ifall skärmens kod kommenteras bort.
I koden för skärmen så ändrar vi inte någon bit som knapparna använder.
Känner ni till något som skulle kunna orsaka ett sådant fel?
Oskar Näslund: analogRead är en arduino-funktion som inte finns i mcb32.
Ta en titt på exemplet "hello-adc" som finns på github-sidan länkad ifrån literature and resources.
De andra kommandona kan du däremot labba runt med utan problem.
Marcus Jonsson Ewerbring: Sitter de på samma PORT?
Hej Under nästa vecka är jag utomlands, och jag undrar hur det blir då med expot, som är på torsdag nästa vecka?
Finns det möjlighet för mig att redovisa när jag kommer hem på något sätt?
Jag har ingen partner.
Om man inte kan redovisa på EXPO:t så ger vi möjlighet till individuell examination, om man gör denna examination innan EXPO:t.
Om man inte kan redovisa på EXPO:t så är nästa möjlighet inte förrän i december tillsammans med EXPO:t inne i stan tillsammans med kursen IS1500.
Det undantaget vi kan godkänna för att göra individuell examination efter EXPO:t är pga.
I så fall måste ni maila mig personligen och förklara omständigheterna.
Jag hoppas att detta klargör det hela.
Hör av dig i annat fall!
Hälsningar David Hallå igen!
Efter lite efterforskningar och sånt i PDFen Fredrik tipsade om innan så börjar vi tvivla på att vi nyttjar rätt PIN för vår fuktsensormodul.
I Family Data-sheetet så framgår det inte riktigt var A1-A5 skulle sitta på kortet.
Det vi hittar däremot är något som refererar till "större" kort, exempelvis 121-pin.
Tolkar vi rätt så syns vårt kort på Sida 6 i Family Sheet-PDFen, där framgår inget om att någon PIN A0 till A5 skulle existera, däremot så finns det AN0 till AN5.
Är dessa samma pins?
Hur ska vi veta säkert?
TL;Dr: Vi vill hitta PDF och Sida som säger oss vad A2 är för PIN och Port, tack.
Trevlig Helg, Niclas Hur mycket av koden från labbarna är tillåtet att använda i projektet?
Vi tänker använda skärmen till en del i projektet, men osäker om vi måste skriva om all SPI kod eller om man kan använda den som redan existerar.
Det är tillåtet att återanvända all kod från labbarna.
Det viktiga är att ni tydligt deklarerar vilken kod ni har skrivit själva.
Hälsningar David Hej Niclas!
Från vad jag kan läsa i chipkit uno32 board reference manual på sidan 11, ska det enligt tabell under avsnittet 3.
Ingen orsak : För andra intresserade läsare, det som var misstaget var att råka blanda ihop referensmanual för PIC32-microcontrollern med den för uno32-kortet development board.
Där microcontrollern är mer generellt beskriven, vad gäller hårdvara, är uno32-kortet mer specifikt beskriven.
Vissa detaljer är bara bestämt i manualen för just utvecklingskortet, eftersom free for word games nook andra kort med samma microcontroller kan se annorlunda ut.
Jag har själv bläddrat i fel dokument under projektet, så det är alltid bra att ha i åtanke vilken information man söker och till vilket dokument den informationen bör höra, med hänsyn till om det handlar om microcontrollern generellt eller något som har och göra med hur just vårt kort är uppbyggt.
Tack på förhand, Daniel Hej!
Titta på kommandotabellen i displaykontrollerns datablad.
Kommandot för att sätta kolumnen är tvådelat och de två kommandona tar fyra bitar vardera ett kommando för de lägre 4 bitarna och ett för de högre 4 Varför displaykontrollern funkar så kan jag inte svara på, play snake game online for free så är det och därför skiftar och maskar koden kolumnvärdet och skickar det i två olika kommandon.
Vi har stött på ett problem som vi inte lyckas få ordning på.
Som jag nämnt tidigare så försöker vi implementera capacitive distance sensing med en antenn.
Det är i princip som det står här texten, inte koden : Men, vi får det inte att fungera!
En möjlig orsak: I alla beskrivningar vi har läst så står det att man ska använda en ganska stor resistans, typ 100 kilohm - 50 megohm, men vi får aldrig utslag på recievePin om vi använder så stor resistans.
Så vi har fått använda futtiga 18 kilohm, eftersom det är största resistansen vi ens får igenom signalen med.
Men det verkar ge oss andra problem, för vi lyckas inte mäta tiden det tar, kanske för att det går extremt fort?
Vår misstanke är att man måste använda en stor resistor, men vi får som sagt inte det att funka.
Någon som har något tips på hur vi ska göra för att kunna få använda större resistorer men ändå få igenom signalen?
Jag begriper inte detta.
Hur mäter ni signalen?
Det kan ta lång tid att mäta stift-tillstånd med mjukvara om man har signal som skiftar snabbt, så det kan erfordra att använda en hårdvarumätning istället.
Om det inte redan är så att ni använder det kan det Input Capture periferin vara något att kolla upp, som använder hårdvarutimers för att snabbt mäta signaler.
Vår taktik hittills har varit att använda två vanliga GPIO pins, för send och recieve.
Recieve-pinnen är associerad med External Interrupt 1.
Vår metod var att börja mata ut på sendPin och samtidigt starta en klocka.
När INT1 triggar så kollar vi vad klockan hunnit räkna upp till, slutar mata på sendPin och väntar en liten stund för att låta kondensatorn antennen ladda ur.
INT1 triggar som den ska.
Det kunde man enkelt testa genom att till exempel skriva någon debug-grej inifrån isr:en för den.
När vi ska mäta tiden och sånt får vi dock nonsensresultat.
Men vad tror du om det här med resistanserna?
Är det inte märkligt att vi aldrig får utslag om vi använder en hög resistans 100 kilohm - 50 megohm?
Är det något vi missat?
Jag ska kika på Input Capture, men jag är inte så säker på att det kommer hjälpa.
Om du råkar vara i Kista så får du hemskt gärna komma förbi G320 där vi sitter.
Det låter som att ni avänder en ingång som används av Basic IO Shield till nånting annat och har ett pull-up eller pull-down-motstånd kopplat.
Se till at ni använder en helt ledig pinne.
Det finns några på nedre kortet som inte är kopplade till det övre kortet till exempel.
Vår tanke med send-porten var just att kunna använda External Interrupt, och då fanns det inga helt lediga tänkte det skulle funka eftersom vi inte använder switchen som är kopplad till den.
Förresten, vi har aldrig blivit helt klara på hur storleken på antennen påverkar resultatet.
Det är inte ett problem att ha en ganska stor antenn va?
För vår antenn är rätt stor.
Ok, tack för hjälpen ni som gav oss tips, men vi får nog ge upp denna metoden.
Vi lyckades till slut få någorlunda användbara mätningar när vi använde open-drain på send-utgången för att få 5V spänning istället för 3.
Men endast för mycket kort range, typ 0-2 cm från antennen.
Över det så funkar det dåligt.
Dags att försöka få tag på en ultraljudssensor illa kvickt!
I would like some help with understanding the display and the usage of bitmaps with it.
That would mean that it's using 128 bits horizontally, times 64 bits vertically?
How is this possible?
Wouldn't that mean that it's using two vertical?
If the bitmap has 128 lines, does that mean each line is one segment?
If it has 8 elements per line, does that mean each element equates to one page?
If it has 8 bits of data in each element, does that mean that each bit of data represents one box?
If so, how does it really work?
Furthermore, does the bitmap store data with big or little endian?
Does it use interleaved data so that it reads data for line 0, 32, 1, 31 and so on or does it simply count from 0 and up?
And finally, is there any free software you can use to convert a.
The display uses a controller with support for 8 pages, but the display itself is only 4 pages.
The configuration in the lab code uses page 0 as the uppermost.
Each page is divided up into 128 columns 8 pixels high.
Each 8 pixel high column is worth on byte, that you send over one at a time using SPI.
You have to address each page manually, after that the controller will move the cursor to the right automatically after receiving each graphic data byte.
Think of it as a type writer.
The details are in the reference manual.
In the hello-display repository on github linked from the literature and resources page there is a small utility 'convert' for converting a bitmap to the display's format.
The way it works is that you first use The Gimp free image editor to turn the image into a a black and white indexed image.
Then you export the image as a C Header file Gimp can do this.
Then compile the convert program and run it, it will output another C array that is suitable for the display on the board.
Regarding endianess: since the display data is handled in bytes, there really is no endianess.
Endianess matters when you for instance access individual bytes of an int or other larger data type, which is not the case here.
When accessing a byte array, you always access each element sequentially in memory.
Jag behöver 5V output för att kommunicera med en extern sensor, men jag får det inte att funka.
Utgången fungerar bra i 3.
Jag har också läst att open drain mappar till de blå skruvportarna på IO-skölden, men inte heller där får jag någon output.
Open drain kan bara driva signalen låg, vilket betyder att du behöver ett pull-up motstånd till 5V som driver signalen hög.
Någonstans mellan 4-10 kOhm borde vara lagom.
Jag blir dock inte helt klok på detta ändå.
Jag läste denna sidan: Exemplet där med knappen är ju dock ganska olikt vårt.
Vi vill höja vår utsignal till 5V, så i vårt fall skulle väl vår utsignal agera som knappen i exemplet?
Genom att mata ut låg eller hög spänning så vill vi koppla click externa komponenten till ground respektive 5V.
Jag vet att vi kan få 5V från 5V-porten på chipKit, men hur gör man switch-funktionen?
Eller gör jag detta mycket krångligare än vad det är?
Hmm, verkar som att detta löser sig ändå, om en kommentar på ett forum stämmer.
Komponenten verkar kunna triggas med 3.
Skulle gärna höra hur du menade att man ska göra dock Axel, om du har tid att svara.
Principen är exakt densamma för inputs som för outputs, i exemplet du länkar så ersätter du bara knappen med pulsingången på er ultraljudssensor.
Funkar det att trigga den med 3.
Om vi vill ha en knapp som hanteras med avbrott, är det lämpligt att då ha en egen sådan och koppla den till en ledig port som har avbrott?
Mvh, Rasmus Hej Rasmus, INT1, INT2, INT3 och INT4 är inkopplade till SW1, SW2, SW3 och SW4.
Kanske det stämmer med era behov.
Om inte, så föreslår jag att ni i stället pollar den knapp eller de knappar ni behöver.
För att få pollningen regelbunden kan ni använda timeravbrott.
Jag har grävt en hel del i Solomon Systech-manualen och börjar få ett ok grepp om hur skärmen fungerar, men en sak begriper jag inte, och det är de två sista kommandona innan ON-kommandot.
Men dessa verkar ha utelämnats här, så vad händer då?
Sätts de till default-värden?
Eller har jag missuppfattat något?
Hi Simon, I'm sorry for the late answer.
Best regards, F Lundevall Hi, me and my friend are attempting to upgrade our basic project into an advanced one.
Occasionally when compiling we get a verification error, for example: mipsel-mcb32-elf-avrdude: verification error, first mismatch at byte 0x1ff1 0x61!
We have read about it online and it seems to have something to do with a timing problem in the bootloader.
There seems to be a new version of the bootloader that fixes this problem.
Thank you for looking into this a bit more.
I have suspected timing issues for some time, but just now discovered that the bootloader version I have been flashing that I downloaded in 2018 is dated 2011 and that there has been an update since.
Maybe this new bootloader will fix the verification errors.
I suggest you send an email to Fredrik Lundevall and ask him to reprogram the bootloader on your board, or if that does not work, replace it.
I'll also send an email to him, asking him to check the date of the bootloader he uses.

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