Since the only reference I have is an example code of bearSSL that is working in PC environment, in order to sort out the problem I am facing that the bearSSL server does not reply to client hello, I’ll have to look inside the source code of bearSSL. After some study, Read more…
In order to apply bearSSL in the project, the first thing I need to do is to include the bearSSL library object. The source code is available as a git repository, simply type “git clone https://www.bearssl.org/git/BearSSL” in a terminal to download the newest version of bearSSL. Apart from this, the Read more…
Continue with last week problem of PUT request failure after implementing SSL, I look through every line of the code again and again and search through every keyword I could think of on the web but did not find much useful information. Without a clue on how to proceed, I asked for Read more…
In my fourth week, after Dr. Shawn saw my code of writing on flash memory which is playing with the pointer, he was like “why did you do that!?”. It was too complicated. Dr. Shawn said “Writing a complicated code is easy, the hardest part is how do you establish the Read more…
As I am collecting the statistic of how the TCP receiver buffer size affects the speed of downloading, I found that the time it takes to download the firmware topped at around 11.6 seconds with 512byte of receiver buffer size, which is in fact very slow, further increase of receiver Read more…
This is my twelfth week in AESTE, and also my last week here. Last week I manage to download file from localhost by TFTP. This week the task is PIC32 which is to swap the program flash memory after receive a valid new firmware. From the Microchip Datasheet Section 52: Read more…
This is my eleventh week in AESTE. This week my task is to download a file from the network. There are a lot of protocols can be used to download the file via network. At the end we choose TFTP(Trivial File Transfer Protocol) due to TFTP will transfer maximum 512 Read more…
This is my tenth week work in AESTE. This week I had successfully to test the Bootloader Live Update work. Although it is update by USB device (my actual project use Ethernet). But that is a good starting point, at least I know how to use the live update demo Read more…
This is my ninth week in AESTE. I spent almost my whole week to study the theory of bootlaoder and how the dual memory work for PIC32MZ. Only the PIC32MZ has dual memory bank, other PIC32 only has one. Bootloader is used to upgrade the firmware of microcontroller without using Read more…
This is my fifth week in AESTE. Yes !! I had solved the 4096 RSA key encrytption problem. The solution is change the FP_MAX_BITS to 8192, then all the problems solved. This week my task is to generate a 1024 RSA key by PIC32, generate serial number and MAC address. Generate Read more…