| Commit message (Collapse) | Author | Age | Files | Lines |
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the old documentation was written more like a journal than a proper
paper, so I am rewriting in a separate document. Once the new doc
will be completed, the content of the old one will be discarted.
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Simple I/O (sio) interfaced, not yet implemented
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- remove syscall.h, unused and not implemented
- bug fix for memcmp() in string.c
other changes are still partially unfinished and might not work
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there is a new program with GUI (gtk3) to send data to its avr
conterpart.
it needs to be tested, since there may be a few bugs in it;
building a GUI was a terrible idea.
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the programmer will receive the binary in blocks of defined size
by a program under sw/programmer/linux (moved from sw/linux).
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- new type pid_t and program management mechanism to make it
easier to switch to a multitasking kernel
- new memory related functions in memory.h to move, copy and
manage pages
- fix typos
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the idea behind kernel/include/progman.h was good but the implementation was
very not unix-like, so I made a new file under
kernel/include/process.h that will implement the same features
other changes:
- move usart register structs definitions outside of the device
- remove old build files
- delete boot.h and boot_loader.h (as they weren't used by anything)
- change on makefile to build binary with `makebin` instead of `xxd`
- new file memory.h to implement memory mapping and mmu control
- new type `uint` in types.h
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Separation of boot and login sections
Improuved program manager system
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boot improved
program allocation
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Serial updates from NaoPross
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merge to get the new doc on master
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this is probably the last merge from this branch since the board has
been sent to print
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this is probably the last commit before printing the PCB, unless there are some
other errors in the board design
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since there wasn't enough space (I should have added the holes before
beginning) there are only 4 holes instead of 6 (2 will be cut out
since the space is unused).
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there are also many other minor changes to connect various wires
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the old layout is still under hw/MainBoard1.PcbDoc
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other changes:
- new layout, probably the board will have to be resized to a
nonstandard size (currently 2EUROCARD)
- new footprint HDR5x2_SOCKET for standard 5x2 flatcable connectors
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wired:
- clock circiuts
- reset button
set layout for:
- CPU & memory
- serial interface
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add missing capacitor and resistor values (serial XTAL)
create new eurocard standard compliant PCB for the uPC
and other minor fixes
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Programs management
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Some Program manager structures, macros and functions (WORK IN PROGRESS)
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fix for bug in usart.c, in function usart_write() that checked the
trasmission_empty register at the wrong time causing it to overwrite
the buffer.
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changes in usart:
- new functions to setup the serial comunication settings such as baudrate,
parity and stop bits
- init function with most common values
- transmit and receive functions each with a wrapper to send data blocks
changes in libc:
- new file stdio.c with basic implementation of putch, printf still a prototype
- new file string.c with memcpy() function
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other changes:
- change from main() to kmain() in crt0.s and kernel.c
- new file devices.h to define all address locations for devices
- new data type
- register_t as volatile uint8_t for registers in devices
- size_t from libc
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fix for the old makefile, because it could't compile more than one source file.
new libc directory with mem.c to start implementing the standard C library
(or at least the part we need).
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