This driver is for the Canon PowerShot series. It works with the
following models:
- PowerShot A50
- PowerShot S10
- PowerShot S20
- PowerShot S30 (under development)
- PowerShot S40 (under development)
- PowerShot S100/ Digital IXUS
- PowerShot IXY Digital
- PowerShot S300 / Digital IXUS 300
- PowerShot IXY Digital 300 (not tested)
- PowerShot G1
- PowerShot G2
- PowerShot A10 (not tested)
- PowerShot A20 (not tested)
- PowerShot Pro90 IS (not tested)
- EOS D30 (not tested)
The support of the following cameras is mostly there as they were supported
in gphoto 0.4.x but an API change broke the support as they handle files a
little differently. If you are interested in fixing it mail
gphoto-devel@gphoto.net or philm@users.sourceforge.net :
- PowerShot A5
- PowerShot A5 Zoom
It doesn't work with the PowerShot 350. However, the PS350 uses a
vaguely similar protocol, so some parts of the sources can probably be
shared.
The driver caches a lot of information. If the camera status changes
during a session or if the driver gets stuck for some other reason,
the caches can be manually flushed using "Configure camera".
We are currently working on support for the raw file format the Canon
cameras use (CRW -Canon RaW files). See
http://www.shore.net/~dcoffin/powershot/
or
http://www2.primushost.com/~dcoffin/powershot/
for details on the file format.
Change history
==============
Version 9 (17-APRIL-2001)
---------
- support added for
PowerShot S300 / Digital IXUS 300 /PowerShot IXY Digital 300
PowerShot A10 / PowerShot A20
EOS D30
Version 8 (1-APRIL-2001)
---------
- This history have not been updated in a while...
- support for G1, S100, Ixus and Ixy was added
- upload support only on serial
Version 7 (25-JULY-2000)
---------
- Ported to gphoto2
Version 6 (19-MAY-2000)
---------
- Included USB support in the driver
- More options in the configuration file
- Debug output can be mostly disabled
- The driver now sets the "downloaded" bit on downloaded images
Version 5 (09-MAY-2000)
---------
- Support for full-speed transfers (115200)
- Most protocol commands are implemented, or at least discovered (see
the 'Protocol' file)
- USB protocol description
- Get/Set owner name
- Get date
- Get firmware rev.
- Get battery status
- Use libgpio for serial transfers
- More reliable error recovery
- Better configuration dialog
- Support for all current powershot models (A5 to S20)
- Low battery condition detection
Version 4 (3-SEP-1999)
---------
- changed uint16_t to unsigned short and removed inclusion of stdint.h, for
compatibility :-(
Version 3 (1-SEP-1999)
---------
- lowered number of tries when initializing from 50 to 10 (50 was for
experiments)
- increased camera ID buffer to be large enough for PS350 responses
- serial input is now flushed before testing or attempting synchronization
- directories are now sorted alphabetically, implicitly ordering images by
date
- fixed a few memory leaks in directory handling
- added arbitrary file download to Configure/Configure Camera (experimental;
very fragile)
Version 2 (29-AUG-1999)
---------
- integrated into gphoto-2.3.5 (from CVS)
- added support for large directories (listing occupies > 1 message)
- receive timeout is now raised from 1 to 10 seconds after first response
- renamed a50_select_disk to a50_disk_info. It now returns disk capacity
and available space.
- completed CRC table
- properly integrated into gPhoto
- lots of cleanups
Version 1 (27-AUG-1999)
---------
- a little bit of code cleanup, added a50.h, doc/, full recursive download
in canon.c, and fixed a few documentation bugs, adjusted send/receive
buffers
- a50_send_msg incremented seq_tx when skipping retransissions while waiting
for ACK
Version 0 (27-AUG-1999)
---------
- initial release which demonstrates most functions in a way that's
completely useless for gPhoto
To do
=====
Not very up to date contact gphoto-devel@gphoto.net if you wish to
contribute.
- code structure is still pretty ugly. Things that absolutely need fixing:
- command codes and fffbs are spread all over the place
- "ping" (empty message) should probably be merged into normal message
handling; perhaps also 03 message -> wait_for_ack can be merged too
- psa50.c must not invoke GUI functions
- change many fprintf(stderr,... to GUI calls or callbacks
- improve error handling: distinguish between severe and harmless errors
(e.g. duplicate EOT vs. ten timeouts in a row)
- find out how error recovery works (need traces)
- get traces for other operations:
- idle period/restart (keepalive ?)
- upload file, create directory
- find out how to avoid blocking gPhoto during transfer
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