I still can’t buy the fact that this is my last time to write an official blog as AESTE intern. Yes! If you haven’t figured it out yet… I’m the type of person who hates all the goodbye thing. đ I do still remember my first blog I wrote, my first days at AESTE and how nervous I was. All these memories seem like just yesterday. Time really went by so fast, almost twenty eight weeks I spent here in Read more
Well this week I continued working on the project. Some bugs were solved, some minor modification for the code here and there and some modules and classes were added. The first issue I was working on was regarding the CodeMirror editor interface. The tabs of the editor weren’t in line. Some need a single tab and other needs double tabs to be in the same depth. The solution for this bug was straight-forward. The C++ mode that we use for Read more
Again, we spent this week fixing bugs and adding more components. We are not adding new features but rather working on the features that are already implemented. Here’s the summary of what happened throughout the week. More components We added more components to the web application. These components are LCD, Mtwi, Mspi. Previously we have had these components (Mtwi and Mspi), however we needed to change their names to Stwi and Sspi (hence, changing them from masters to slaves). So, Read more
This week I continued to look into tree dump files in the effort to find out the data passed to the plugin event. Honestly as I have posted before, information on analysing dump files are really hard to find online. Most of the information available are about the basic information about dump files but not how to analyse them. After searching for quite some time online, I have found only one resource so far from GCC Resource Centre, IIT Bombay that Read more
This week I am trying to implement the stack initialization to the system. Other than that, the FreeRTOS required programmer to make functions to save and restore context of the system during tasks switching. Every tasks in FreeRTOS required to save into the stack. The task is assigned to the stack during creating task into the system. Once the task is needed to be run, the stack pointer will restore to the particular stack address. And the minimal task space Read more
My task was to include all the request method to allow users to interface with the web server. Inside the demo code of microchip TCPIP, there was a flow of state machine to receive and response the request. By modifying and inserting the request method, a simple receive request and return response program can be performed. Â This was tested by using the telnet to send the commands, for example OPTION / HTTP/1.1. After finishing the simple receive and response task, Read more
Completion of Timer Interrupt This week, I had been working around with the timer interrupt, confirmed that the timer interrupt mechanism is actually correct after storing and restoring the 32 general registers that had been discussed previously. RISC-V control status register ISA only works around with the registers, but not the immediate value. Thus, I had to save an immediate value to a register before using the control status register ISA such as CSRRW, CSRRS, and etc. Configuring most of Read more
Data Flow Analysis This week I continued in my search for reference in dump files analysis. In the beginning, I found something about Data Flow Analysis and when I look inside the content, it looks like exactly like Mathematics, probability all over again. There are a lot of symbols and expressions that I have not seen before, probably because I did not learn about data flow analysis before. At first I was quite shocked to see data flow will involve Read more
This week I continue the work on the TCPIP. There are a many features in the TCPIP microchip allpication library demo, which are unnecessary. I had to remove these unnecessary features. Since many of these features were linked with each others, therefore I need to delete them one by one and compile to test whether there are errors. After removing those unnecessary features, I continue to work on the performance improvement task. There is a built-in TCP buffer used to Read more
This week I trying to port another RTOS to our microprocessor. The purpose to learn this OS because it usually run preemptive operation in event scheduler. Same as Contiki, FreeRTOS also a RTOS design for small and memory constraint processor. Currently, FreeRTOS had successfully ported to plenty of microprocessor which consist products of Altera, Atmel, Arm, Cadence Tensilica, Cortus, Infineon and so on. Each of the process in FreeRTOS called task, FreeRTOS using the scheduler to control the tasks state. A task will be Read more