Richard Hirst
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fe63b9899e
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Rework to process commands as they are issued, rather than on close()
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2012-11-23 22:31:42 +00:00 |
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Robin Mallinson
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e59ad99d57
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Change dev_read() to output data suitable for direct write back through the dev file.
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2012-11-21 22:46:23 +00:00 |
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Robin Mallinson
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e712bd86ba
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All works as intended now. Commands can be written partially, and a single
write to the device file may contain multiple commands.
To achieve both of these the driver now only parses the commands on
dev_close().
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2012-11-21 03:15:12 +00:00 |
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Robin Mallinson
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1b8dbeed21
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Increase space available for cmd_str ready for taking multiple commands in one go.
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2012-11-21 01:07:17 +00:00 |
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Robin Mallinson
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ce367d489a
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Factor out process_command_string()
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2012-11-21 01:00:36 +00:00 |
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Robin Mallinson
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983e36f7c1
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Following test and bug fix code now works as intended on partial writes.
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2012-11-21 00:48:27 +00:00 |
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Robin Mallinson
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b1bb608d4c
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Allow dev_write to work per-process.
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2012-11-18 23:35:32 +00:00 |
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Robin Mallinson
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ef87ef88a7
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Add code to allow dev_write to cope with partial writes (as will sometimes
occur when using languages such as python to write to the dev file).
Currently static data so same for all processes.
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2012-11-18 23:15:35 +00:00 |
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Robin Mallinson
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b14044eba1
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Refactor dev_write prior to allowing it to take partial strings.
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2012-11-18 21:52:28 +00:00 |
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Robin Mallinson
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38101f8a62
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fix dumb typo
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2012-11-18 14:57:55 +00:00 |
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Robin Mallinson
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d6e1b2efe5
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Add skeleton of allocation code for kmalloc and kfree. Currently allocates a dummy storage area.
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2012-11-18 14:36:05 +00:00 |
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Robin Mallinson
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4b87d814df
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Add crude 'written_data' array so dev_read simply echos verbatim what was written to dev_write without probing the actual DMA control block data. This gives no clue as to whether the DMA control bloack has been programmed but does mean that Richard's control code - which has a special case for delay=0 - does not require changing. Next steps are to have an array per-process.
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2012-11-18 14:09:45 +00:00 |
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Robin Mallinson
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62f326001c
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Refactor to amke the only difference between the code paths a little more obvious.
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2012-11-13 00:02:11 +00:00 |
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Robin Mallinson
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e3230cb8d2
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Make servoblaster write pulse high length even when cnt=0. Also change default tick high from 1 to zero.
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2012-11-12 23:49:39 +00:00 |
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Robin Mallinson
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8002904e4e
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Enable dev_read code, plus fix a couple of syntax errors (the code hadn't been compiled).
It appears to work at a cursory level:
pi@raspberrypi ~/src/PiBits/ServoBlaster $ sudo insmod ./servoblaster.ko
pi@raspberrypi ~/src/PiBits/ServoBlaster $ ls -l /dev/servoblaster
crw-rw-rw- 1 root root 251, 0 Nov 11 19:22 /dev/servoblaster
pi@raspberrypi ~/src/PiBits/ServoBlaster $ cat /dev/servoblaster
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
pi@raspberrypi ~/src/PiBits/ServoBlaster $
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2012-11-11 19:23:41 +00:00 |
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Richard Hirst
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da669a303d
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Updated for kernel Linux raspberrypi 3.2.27+ #151 PREEMPT Fri Sep 14 17:00:51 BST 2012 armv6l GNU/Linux
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2012-09-15 21:40:27 +01:00 |
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Richard Hirst
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25b3c962a8
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Rebuilt for Linux version 3.2.27+ (dc4@dc4-arm-01) (gcc version 4.7.2 20120731 (prerelease) (crosstool-NG linaro-1.13.1+bzr2458 - Linaro GCC 2012.08) ) #90 PREEMPT Wed Aug 29 22:58:42 BST 2012
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2012-08-31 09:05:23 +01:00 |
|
Richard Hirst
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2b9f76dd88
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Updates to allow tweaking timing via module parameters
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2012-08-30 21:58:53 +01:00 |
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Richard Hirst
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d8df9b7625
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Added ServoBlaster
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2012-08-19 17:11:33 +01:00 |
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