MCUFRIEND_kbv | MCUFRIEND_kbv Library for Uno

by prenticedavid C Version: v3.0.0 License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | MCUFRIEND_kbv Summary

MCUFRIEND_kbv is a C library typically used in Internet of Things (IoT), Arduino applications. MCUFRIEND_kbv has no bugs, it has no vulnerabilities and it has low support. However MCUFRIEND_kbv has a Non-SPDX License. You can download it from GitHub.

#MCUFRIEND_kbv Library for Uno 2.4, 2.8, 3.5, 3.6, 3.95 inch mcufriend Shields. graphictest_kbv.ino: shows all the methods. LCD_ID_readreg.ino: diagnostic check to identify unsupported controllers. MCUFRIEND_kbv inherits all the methods from the Adafruit_GFX class: and Print class: The only "new" methods are hardware related: vertScroll(), readGRAM(), readPixel(), setAddrWindow(), pushColors(), readID(), begin(). readReg(), pushCommand() access the controller registers. The File layout changed with v2.9.3. If replacing a pre-v2.9.3 library: Please leave IDE. Delete the existing MCUFRIEND_kbv folder. Start the IDE. Install from Library Manager. HOW TO INSTALL AND USE: is now in "mcufriend_how_to.txt". CHANGE HISTORY: is now in "mcufriend_history.txt".

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Quality

Security

License

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Support

MCUFRIEND_kbv has a low active ecosystem.

It has 303 star(s) with 166 fork(s). There are 31 watchers for this library.

It had no major release in the last 12 months.

There are 28 open issues and 166 have been closed. On average issues are closed in 527 days. There are 9 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of MCUFRIEND_kbv is v3.0.0

Quality

MCUFRIEND_kbv has 0 bugs and 0 code smells.

Security

MCUFRIEND_kbv has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

MCUFRIEND_kbv code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

MCUFRIEND_kbv has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

MCUFRIEND_kbv releases are available to install and integrate.

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MCUFRIEND_kbv Key Features

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MCUFRIEND_kbv Examples and Code Snippets

No Code Snippets are available at this moment for MCUFRIEND_kbv.

Community Discussions

Trending Discussions on MCUFRIEND_kbv

Trouble with Char arrays, how to properly construct and display them

Arduino Mega to ADC SPI communication is not working

QUESTION

Trouble with Char arrays, how to properly construct and display them

Asked 2019-Aug-18 at 20:05

For a product I am co-designing I want to display bitmap icons on an LCD screen. Inspired by among others this tutorial I created a separate C-file with the byte array of the icon I am trying to display.

When I try to display the icon directly it seems to work. But when I try to do it indirectly - which is going to be nessecary eventually - it fails.

What really baffles me and what I seek to understand is; when I print out the array of the garbage icon (CHAR ARRAY) to the serial monitor and compare it to the byte array it is suppose to represent they match correctly. But when I do the same for the image that is displayed correctly (ICON ARRAY), what I print to the serial monitor does not match the byte array it is displaying, the information I printed is not even consistent... How can this be ?!

I have been cracking my head over this for a week now so any help would be greatly appreciated.

The main file:

...

ANSWER

Answered 2019-Aug-18 at 19:44

in drawBitmap() you are iterating through bytes via pgm_read_byte()

In the avr-libc docs it says

Read a byte from the program space with a 16-bit (near) address. Note: The address is a byte address. The address is in the program space.

Your array that is a copy of the bitmap, "myCharArray", is not in program space so pgm_read_byte() does not operate correctly.

Source https://stackoverflow.com/questions/57546691

QUESTION

Arduino Mega to ADC SPI communication is not working

Asked 2019-Aug-07 at 14:24

I'm using SPI communication to try to connect my Arduino Mega 2560 as the master with an ADC chip as the slave (Max 1247) in external clock mode, but I keep receiving the same values (RB1 = 255, RB2 = 255, RB3 = 255) or all zeros whenever I run my code. There is also a touch screen (which works) connected. Everything works except the ADC chip communication with the Arduino.

I have tried deleting the define header, and varying the clock. Neither change anything (which might be because of other errors).

...

ANSWER

Answered 2019-Aug-07 at 14:24

I can't definitely say if this is the root of your problem, but I found the following:

You defined SSTRB to be pin 43

Source https://stackoverflow.com/questions/57352483

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Vulnerabilities

No vulnerabilities reported

Install MCUFRIEND_kbv

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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