initial move from other directories

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1844 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Robert Hak 2002-08-21 10:19:23 +00:00
parent 3a5b919e85
commit 40bafc5def
5 changed files with 749 additions and 0 deletions

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$Id$
__________ __ ___.
Open \______ \ ____ ____ | | _\_ |__ _______ ___
Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
\/ \/ \/ \/ \/
API summmary
[ This is still pretty rough and basic. Extend! ]
LCD
#include <lcd.h>
Generic
Most LCD functions are specific for which output we work with, due to the
huge differences.
lcd_init() - init the LCD stuff
lcd_clear_display() - clear the whole display
lcd_backlight(on) - set backlight on/off
lcd_puts(x,y,string) write a string at given character position
Recorder
All the functions operate on a display buffer. You make the buffer get
shown on screen by calling lcd_update().
lcd_update() update the LCD according to the internal buffer.
lcd_update_rect(int x, int y, int height, int width)
Update the given rectangle to the LCD. Give arguments measured in
pixels. Notice that the smallest vertical resolution in updates that the
hardware supports is even 8 pixels. This function will adjust to those.
lcd_setfont(int font) set default font
lcd_setmargins(int x, int y) set top/left margins
lcd_putsxy(x,y,string,font) put a string at given position, using a
specific font
lcd_bitmap(src,x,y,width,height,clear) put a bitmap at given position
lcd_clearrect(x,y,width,height) clear a rectangle area
lcd_fillrect(x,y,width,height) fill a rectangle area
lcd_drawrect(x,y,width,height) draw a rectangle
lcd_invertrect(x,y,width,height) revert the graphics of the given area
lcd_drawline(x1,y1,x2,y2) draw a line between the coordinates
lcd_drawpixel(x,y) put a pixel on the given coordinate
lcd_clearpixel(x,y) clear the pixel at the given coordinate
lcd_fontsize(font,width,height) return the width and height of the font
Player
lcd_define_pattern(which,pattern,lenth) define a custom pattern
Buttons
#include <button.h>
These functions work the same regardless of which keypad you have, but they
return a different set of values. Note that the Recorder keypad has 10
keys, while the Player keypad only features 6.
int button_get(bool block)
Returns a bitmask for which keys were pressed. If 'block' is set TRUE it
won't return until a key is pressed.
Files
(These functions are POSIX look-alikes)
#include <file.h>
int open(const char *path, int oflag);
The open() function establishes the connection between a file and a file
descriptor. It creates an open file descrip- tion that refers to a file
and a file descriptor that refers to that open file description. The file
descriptor is used by other I/O functions to refer to that file.
int read(int fildes, void *buf, size_t nbyte);
The read() function attempts to read nbyte bytes from the file associated
with the open file descriptor, fildes, into the buffer pointed to by buf.
int lseek(int fildes, off_t offset, int whence);
The lseek() function sets the file pointer associated with the open file
descriptor specified by fildes as follows:
o If whence is SEEK_SET, the pointer is set to offset
bytes.
o If whence is SEEK_CUR, the pointer is set to its
current location plus offset.
o If whence is SEEK_END, the pointer is set to the size
of the file plus offset.
int write(int fildes, const void *buf, size_t nbyte);
NOT CURRENTLY SUPPORTED.
write writes up to count bytes to the file referenced by the file
descriptor fd from the buffer starting at buf.
int close(int fildes);
The close() function will deallocate the file descriptor indicated by
fildes. To deallocate means to make the file descriptor available for
return by subsequent calls to open(2) or other functions that allocate
file descriptors.
int rename(const char *old, const char *new);
NOT CURRENTLY SUPPORTED.
The rename() function changes the name of a file. The old argument points
to the pathname of the file to be renamed. The new argument points to the
new pathname of the file.
int remove(const char *pathname);
NOT CURRENTLY SUPPORTED.
remove deletes a name from the filesystem. It calls unlink for files,
and rmdir for directories.
Directories
#include <dir.h>
DIR *opendir(const char *name);
The opendir() function opens a directory stream corresponding to the
directory name, and returns a pointer to the directory stream. The
stream is positioned at the first entry in the directory.
struct dirent *readdir(DIR *dir);
The readdir() function returns a pointer to a dirent structure
representing the next directory entry in the directory stream pointed to
by dir. It returns NULL on reaching the end-of-file or if an error
occurred.
Add a description of the struct here.
int closedir(DIR *dir);
The closedir() function closes the directory stream associated with dir.
The directory stream descriptor dir is not available after this call.
String/Memory
#include <string.h>
strcmp()
strcpy()
memcpy()
memset()
...
Memory allocation
#include <dmalloc.h>
void *malloc(size_t size);
malloc() allocates size bytes and returns a pointer to the allocated
memory. The memory is not cleared.
void free(void *ptr);
free() frees the memory space pointed to by ptr, which must have been
returned by a previous call to malloc(), calloc() or realloc().
Otherwise, or if free(ptr) has already been called before, undefined
behaviour occurs.
void *realloc(void *ptr, size_t size);
realloc() changes the size of the memory block pointed to by ptr to size
bytes. The contents will be unchanged to the minimum of the old and new
sizes; newly allocated memory will be uninitialized. If ptr is NULL, the
call is equivalent to malloc(size); if size is equal to zero, the call is
equivalent to free(ptr). Unless ptr is NULL, it must have been returned
by an earlier call to malloc(), calloc() or realloc().
void *calloc(size_t nmemb, size_t size);
calloc() allocates memory for an array of nmemb elements of size bytes
each and returns a pointer to the allocated memory. The memory is set to
zero.
ID3
#include <id3.h>
bool mp3info(mp3entry *entry, char *filename);
Return FALSE if successful. The given mp3entry is then filled in with
whatever id3 info it could find about the given file.
Various
#include <kernel.h>
void kernel_init(void)
Inits the kernel and starts the tick interrupt
void sleep(ticks)
Sleep a specified number of ticks, we have HZ ticks per second.
void yield(void)
Let another thread run. This should be used as soon as you have to "wait"
for something or similar, and also if you do anything that takes "a long
time". This function is the entire foundation that our "cooperative
multitasking" is based on. Use it.
int set_irq_level(int level)
Sets the interrupt level (0 = lowest, 15 = highest) and returns the
previous level.
void queue_init(struct event_queue *q)
Initialize an event queue. The maximum number of events in a queue is
QUEUE_LENGTH-1.
void queue_wait(struct event_queue *q, struct event *ev)
Receive an event in a queue, blocking the thread if the queue is empty.
void queue_post(struct event_queue *q, int id, void *data)
Post an event to a queue.
NOTE: Negative event ID's are for system use only!!!
bool queue_empty(struct event_queue* q)
Returns true if the queue is empty.
int queue_broadcast(int id, void *data)
Posts an event in all queues that has been initiated with queue_init().
Returns the number of queues that were posted to.
int tick_add_task(void (*f)(void))
Add a task to the tick task queue. The argument is a pointer to a
function that will be called every tick interrupt.
At most MAX_NUM_TICK_TASKS can be active at the same time.
int tick_remove_task(void (*f)(void))
Remove a task from the task queue.
void mutex_init(struct mutex *m)
Initialize a mutex.
void mutex_lock(struct mutex *m)
Lock a mutex. This will block the thread if the mutex is already locked.
Note that you will geta deadlock if you lock the mutex twice!
void mutex_unlock(struct mutex *m)
Unlock a mutex.

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$Id$
In order for the project to run as smoothly as possible, it's best if all
contributors adhere to a few simple conventions:
Language
--------
Write all code in C. Sometimes assembly is faster, but C is always more
readable and maintainable.
Language features
-----------------
Write normal C code. Don't redefine the language. No new types (structs are
structs, not typedefs), no C++isms or Javaisms. Also, avoid using "const".
Names
-----
Variables and function names should be all lower case.
Preprocessor symbols should be all uppercase.
Style
-----
When changing code, follow the code style of the file you are editing.
When writing new files, you may use the brace placement style of your choice.
Always indent your code with four spaces. Don't use TAB characters, as that
will mess up code display in CVS, printing, and a zillion other places.
Keep lines below 80 columns length. Use whitespace and newlines to make the
code easy to browse/read.
Text format
-----------
Use "unix style" line feeds: "LF" only. Do not use "CR+LF".
Patches
-------
Create a patch using 'cvs diff -ub'.
Trim your patches so they only contain relevant changes.
Submit all patches to the mailing list.
Put [PATCH] first on the subject line of your mail.
If the patch is very large (>50k), gzip it before you send it.

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
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Preamble
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When we speak of free software, we are referring to freedom, not
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
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consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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People that have contributed to the project, one way or another. Friends!
Björn Stenberg Originator, project manager, code
Linus Nielsen Feltzing Electronics, code
Andy Choi Checksums
Andrew Jamieson Schematics, electronics
Paul Suade Serial port setup
Joachim Schiffer Schematics, electronics
Daniel Stenberg Code
Alan Korr Code
Gary Czvitkovicz Code
Stuart Martin Code
Felix Arends Code
Ulf Ralberg Thread embryo
David Härdeman Initial ID3 code
Thomas Saeys Logo
Grant Wier Code
Julien Labruyére Donated Archos Player
Nicolas Sauzede Display research
Robert Hak Code, documentation, sarcasm
Dave Chapman Code
Stefan Meyer Code
Eric Linenberg Code
Tom Cvitan Web design
Magnus Öman Font
Jerome Kuptz Code
Julien Boissinot Code, Sound research
Nuutti Kotivuori Code
Heikki Hannikainen Code
Hardeep Sidhu Code
Markus Braun Code
Justin Heiner Code
Magnus Holmgren Code
Bill Napier Build fixes
George Styles Code
Mats Lidell Code

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__________ __ ___.
Open \______ \ ____ ____ | | _\_ |__ _______ ___
Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
\/ \/ \/ \/ \/
Build your own archos.mod.
1. Check out 'firmware', 'apps' and 'tools' from CVS (or possibly from a
downloaded archive). You may possibly want 'uisimulator' too (for trying
out things on host before making target tests). If you haven't already
done so, we advise you pull down the 'docs' directory as well.
2. Build the tools by running 'make' in the tools/ directory.
3. Create your own build directory, preferably in the same directory as the
firmware/ and apps/ directories. This is where all generated files will be
put.
4. In your build directory, run the 'tools/configure' script and enter what
target you want to build for and if you want a debug version or not. It'll
prompt you. The debug version is for making a gdb version out of it. It is
only useful if you run gdb towards your target Archos.
5. Make sure you have sh-elf-gcc and siblings in the PATH.
6. *ploink*. Now you have got a Makefile generated for you. Run 'make' and
soon the necessary pieces from the firmware and the apps directories have
been compiled and linked.
7. Copy the archos.mod file to your archos, reboot it and *smile*.
Whenever the tools/configure script gets updated, you can make your makefile
updated too by running 'tools/configure update'
If you want to build for more than one target, just create a new build
directory and create a setup for another target combination in there.
Questions anyone? Take them to the mailing list. We'll be happy to help you
out!