Advanced-cache.php Already Exists Warning Solved by blog_1buq8n - November 30, 2019November 30, 20190 Everything was broken when we tried to install yet another WP cache plugin. All the tabs and pages from admin panel are showing advanced-cache.php already exists warning. Warning! The file ../../wp-content/advanced-cache.php already exists. Please manually delete it before using this plugin. Origin Most of the wordpress installation done from dreamhost will have wp super cache plugin installed. This plugin will speed up wordpress blog, and so is recommended. If you do not have cache plugin installed then your wordpress blog will eat up lot of RAM(memory). There are multiple cache plugins available. We were trying out different plugins other than wp super cache. We tried to install hyper cache. Other than hyper cache there are tons of cache plugins, like, wp rocket, w3
JSON libraries HelloWorld by neudeep - November 22, 2019November 22, 20190 JSON libraries 1.frozen Output JSON objects in C as JSON formatted strings and parse JSON formatted strings back into the C presentation of the JSON objects. FEATUES: • C and C++ complaint portable. • Several extra format specifiers supported. JSON token: This stucture contains- Pointer pointing to beginning of the value. Value length Type of the token Token types are string,number,true,false,null, object start, object end,array start and array end. API’s: • json_scanf Scans json string directly into c/c++ variables. • json_printf Print c/c++ variables directly into output stream. • json_setf Modifies existing json_string.
Install Redmine on DreamHost VPS Server LinuxAdmin by blog_1buq8n - October 14, 2019June 29, 20200 Recently we moved to dreamhost VPS server and signed in for 3 year service. We were using redmine in our projects for handling project management activities. After successful installation of latest redmine release on local server, it was time to move on to install and test it on webservers. But when we contacted Dreamhost support they have standard reply, Thank you for writing into DreamHost Support!Unfortunately, we cannot assist with custom configs for that application, My apologies. If you need root access for the install then you would need to use a dedicated server or DreamCompute and that would not be allowed on your current VPS.Dreamhost Support Reply There are multiple resources available across the web about Redmine on Dreamhost,
SAME54 I2C Driver Issue Solved embedded by blog_1buq8n - September 10, 2019October 10, 20190 If you are reading this post that means you are using ATMEL or Microchip controller. We are using ATSAME54 micro from microchip, it is ARM based cortex-M4 series controller. In our application we have around eight I2C ( Inter-integrated Circuit) slave devices connected. I2C slave devices includes, RTC, onboard temperature sensor, FRAM, LED drivers etc. Well as you know all I2C slave devices can be addressed using their addresses. Well as most of guys does we too have downloaded sample code from start.atmel.com and tested. We have SAME54 explained pro and we brought PCA9685 LED driver. This is simple I2C based LED driver and is easily available, its schematic and design also available from adafruit. With sample code and its
Modbus Master Stack On ATSAME54 With RTOS embedded by neudeep - September 7, 2019September 7, 20190 In previous post we discussed about how to port modbus slave stack on ATSAME54. This post we will discuss on how to port modbus master stack on SAME microcontroller. You can download example freemodbus master stack for reference from FreeModbus. We have referred the 'AT91SAM7X_FREETROS' example project. You can follow the steps from previous post for creating directory of project files. Instead of modbus slave stack, add modbus master stack. In addition, We are using FreeRTOS in our project. So In top level directory we have added FreeRTOS V9.0.0 . Please refer to modifications in port specific files described in previous post. So lets begin with issues while port modbus master stack on SAME, Without an operating systems there are
Install wxPython With Solved ImportError python by blog_1buq8n - August 30, 2019August 10, 20200 This post describes how to install wxPython on ubuntu system and helps with solved build errors while installation. This post assumes you have bare Ubuntu 18.04.3 LTS system and it is newly installed. wxPython is a opensource, cross platform, GUI toolkit for the Python programming. This post describes in detail for how to install wxpython ubuntu 18.04 for python2 and python3. wxPython allows Python programmers to create programs highly functional graphical user interface, simply and easily. Being cross platform with little changes it works on Microsoft windows and Linux systems. So if you have GUI application that requires to be executed on both windows and Linux wxPython is right choice for python programmers. 'pip' is required as a prior
How To Install Ionic Cordova With First Application Android by blog_1buq8n - August 19, 2019August 19, 20190 Ionic framework is one of the popular development environment for mobile applications. Ionic is popular because of its open source mobile UI toolkit for developing rich cross-platform mobile applications. Cross platform meaning, apps developed using Ionic with single codebase can be executed from iOS(iPhones, iPad), Android and webserver(desktop Applications). It uses technologies like HTML, CSS, Javascript, NodeJS, To start with your first Ionic Application, you need to install Ionic framework. This post describes about installation of Ionic and its required components, running first Ionic application and how to run android application in ionic framework. Installation Follow below steps for Ionic framework installation. Assuming you are using fresh Ubuntu system and 'npm' is not installed on system, first install 'npm' - node
Port Modbus Slave Stack On ATSAME54 embedded by neudeep - July 30, 20190 We are referring modbus server stack implementation for SAM3X and We want to port it on SAME54P20A. First we have downloaded the example project for SAME54P20A which is using Usart_Asynchrnous module from Atmel START. Then create new top level directory for project files. Following files needs modification while porting, they are present in sub directory named 'port' which will contain all port specific files, portserial.cporttimer.cportevent.cportother.cport.h Atmel start project is having makefile in sub-directory 'gcc'. Add these port specific files paths in makefile. Then add modbus stack folder to top level directory which is having all the modbus specific functions. For compilation we hav to add these all file paths in makefile which is in gcc directory. We have to first
How To Use Two Timers In Same Project embedded by blog_1buq8n - July 29, 2019August 22, 20210 If you are using SAM series controller you probably have came across this question, How do i implement two timer which generate two interrupt at different time in same project? or How we can use two timer in same project in SAME54 controller? Well SAM series controller are ARM-based MCUs and MPUs from ATMEL now Microchip. We are using ATSAME54P20A ie SAME54 explained pro board to evaluate the functionality of it. So created new project using start.atmel.com with TC0 and TC1 along with WDT and interrputs. The project tree looks as below, This project works well and TC0 timer interrupt is working but TC1 timer interrupt is not working. Following is code for initialization and using
How To Write RTOS Safe ISR For ATSAME embedded by blog_1buq8n - July 26, 2019August 22, 20210 In our application it is required to use FreeRTOS API functions from an interrupt service routine(ISR). Good thing about FreeRTOS is it has provided interrupt safe API, meaning one can use FreeRTOS API functions from ISR, as they have provided two versions of some API. Functions intended for use from ISRs have “FromISR” appended to their name eg. xQueueSendFromISR How to set correct priority levels if I want to call an ISR-safe function from interrupt? Because the maximum level of configKERNEL_INTERRUPT_PRIORITY is 1 and the minimum preemption Priority level of any interrupt source e.g. and edge interrupt is 15. That means it is above the max. level of configKERNEL_INTERRUPT_PRIORITY. In our application we were using xQueueSendFromISR() from IRQ10 ie 'EIC_10_IRQn', to