Difference between revisions of "User:Pbansal"

From REU@MU
Jump to: navigation, search
Line 18: Line 18:
  
 
Day 4: <br>
 
Day 4: <br>
−
Tried booting a light version of Xinu taken from an old Operating System's homework.  Didn't work.  Started to convert the code that turned the light on in the C file to assembly (ARM64) to see if the booting process just wasn't getting to the C file <br><br>
+
Tried booting a light version of Xinu taken from an old Operating System's homework (didn't work)
 +
Started to convert the code that turned the light on in the C file to assembly (ARM64) to see if the booting process just wasn't getting to the C file <br><br>
  
 
Day 5: <br>
 
Day 5: <br>
−
Realized over the weekend that our compiler already converts the C code to assembly, so if we just told it not to delete the assembly file we wouldn't have to write the assembly code ourselves...  So we tried that today and got it to work.  We then moved the code around to see where it stopped working.  It worked no matter where we put it in the assembly code, but when we put the code again in the C code that the assembly code branched to, it wouldn't turn the light on.  Fixed some problems by changing the address where the Pi boots the Xinu, but we still aren't receiving any input from the serial connection<br><br>
+
Converted C to assembly using the compiler (which we should have just done before)
 +
Found that booting process wasn't getting to C file but was getting to assembly
 +
Fixed code so light would turn on even when code was in C file
 +
Still not receiving any input from the serial connection<br><br>
  
 +
Day 6: <br>
 +
Got serial connection working using mini-UART
 +
Receiving wrong characters using pl011<br><br>
 +
 +
Day 7: <br>
 +
Tried to find what the correct baud rate should be set to for pl011 (to no avail)<br><br>
  
  

Revision as of 18:52, 10 June 2017

Priya.jpg


Marquette Senior

My research project focuses on porting Embedded Xinu into our new, multi-core Raspberry Pi 3s. While my project has just begun, my log thus far is below.

Day 1:
Orientation

Day 2:
Booted Raspbian onto Raspberry Pi 3
Realized Pi is 64 bit and not 32 bit... Found new cross-compiler since old one won't work
Attempted to boot Xinu onto Pi 3 (not yet there)

Day 3:
Got a bare metal program (taken from Tristan Gingold) to boot on the Rasberry Pi and turn on a light

Day 4:
Tried booting a light version of Xinu taken from an old Operating System's homework (didn't work) Started to convert the code that turned the light on in the C file to assembly (ARM64) to see if the booting process just wasn't getting to the C file

Day 5:
Converted C to assembly using the compiler (which we should have just done before) Found that booting process wasn't getting to C file but was getting to assembly Fixed code so light would turn on even when code was in C file Still not receiving any input from the serial connection

Day 6:
Got serial connection working using mini-UART Receiving wrong characters using pl011

Day 7:
Tried to find what the correct baud rate should be set to for pl011 (to no avail)


Phone: (414) 379-0802

Upgrading Embedded Xinu for the Multi-Core Raspberry Pi 3

Retrieved from "https://reu.cs.mu.edu/index.php?title=User:Pbansal&oldid=2366"