Search found 14 matches

by comarius
Sun Mar 22, 2020 10:19 pm
Forum: MyBlogger
Topic: CJMCU cp2112 GPIO pins
Replies: 0
Views: 1111

CJMCU cp2112 GPIO pins

CJMCU cp2112 GPIO's numbers There are 3 GPIO pins so far I05 I06 I07 as gpio 357 358 and 359. echo 357 > /sys/class/gpio/export echo 358 > /sys/class/gpio/export echo 359 > /sys/class/gpio/export echo "out" > /sys/class/gpio/gpio357/direction echo "out" > /sys/class/gpio/gpio358/direction echo "in"...
by comarius
Thu Feb 20, 2020 11:35 pm
Forum: Do It Yourself
Topic: R-PI EGL Tests
Replies: 1
Views: 1858

Re: R-PI EGL Tests

Feb 20/2020, Trying to install QT QUICK 5 Let's see sudo apt-get install qt5-default libqt5qml5 qml-module-qtquick-controls qt5-default qtdeclarative5-dev qtquickcontrols5-examples ...work in progress QT_QPA_DEBUG=1 QT_QPA_PLATFORM=linuxfb QT_LOGGING_RULES="qt.qpa.*=true" ./dashboard [9;0]qt.qpa.inp...
by comarius
Mon Feb 17, 2020 3:32 pm
Forum: PRELOADED SDCARDS
Topic: REGISTRATION
Replies: 0
Views: 1393

REGISTRATION

To register to forum you you should use the same email that was used when you purchased the SD card.
by comarius
Tue Jan 28, 2020 5:00 am
Forum: PRELOADED SDCARDS
Topic: Unplugging the power can cause a sdcard ireversible dammage on all ARM boars
Replies: 1
Views: 592

Re: Unplugging the power can cause a sdcard ireversible dammage on all ARM boars

Use a good quality power supply without ripples, 5V 3 amps or more. Use a good quality USB cable for power, not 1$, not gas station, search on Amazon a decent one ~10$. A bad USB can cause a SOC ARM board not to boot. I found that the most sensitive are the AllWiner based boards. Never power off by...
by comarius
Thu Jan 16, 2020 10:59 pm
Forum: MyBlogger
Topic: R-PI glui UI contrils on EGL Experiment
Replies: 0
Views: 1157

R-PI glui UI contrils on EGL Experiment

Ongoing research. download https://sourceforge.net/projects/freeglut/ latest right on pi build for native GLES Edit CMakeLIst.txt and add # NOTE: On Windows and Cygwin, the dll's are placed in the # CMAKE_RUNTIME_OUTPUT_DIRECTORY, while their corresponding import # libraries end up in CMAKE_ARCHIVE_...
by comarius
Thu Jan 16, 2020 10:34 pm
Forum: Do It Yourself
Topic: R-PI EGL Tests
Replies: 1
Views: 1858

R-PI EGL Tests

Prerequisites RPI 3 Linux raspberrypi 4.19.75-v7+ #1270 SMP Tue Sep 24 18:45:11 BST 2019 armv7l GNU/Linux Raspbian GNU/Linux 10 sudo apt-get install xcompmgr libgl1-mesa-dri (I dont know if you need this!!!) Then sudo raspi-config Advanced options -> GL Driver -> [ G1 LEGACY] -> The GL Driver is di...
by comarius
Thu Jan 16, 2020 3:17 pm
Forum: MyBlogger
Topic: STM32 Save data in RAM between reboots
Replies: 0
Views: 977

STM32 Save data in RAM between reboots

To avoid wear-out of flash data can be saved gracefully in RAM area. The data is preserved as long the CHIP is powered. You have to know your MPU RAM size. Usually you can find this information in the data sheet or using the STM32CubeMX tool for the MPU./MCU list. Once you have the skeleton code ge...
by comarius
Wed Jan 15, 2020 6:04 pm
Forum: Do It Yourself
Topic: Qt Creator debug on Target Beagelbone
Replies: 0
Views: 1277

Qt Creator debug on Target Beagelbone

Prerequisites: Linux Desktop / Laptop and qtcreator Qt Creator 4.9.1 Based on Qt 5.12.3 https://download.qt.io/official_releases/qt/5.12/5.12.3/ Linux for BBB 18 or up https://beagleboard.org/latest-images qt-everywhere-opensource-src-5.8 https://download.qt.io/archive/qt/5.8/5.8.0/single/ ARM toolc...