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Diffstat (limited to 'Documentation/input/iforce-protocol.txt')
| -rw-r--r-- | Documentation/input/iforce-protocol.txt | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/Documentation/input/iforce-protocol.txt b/Documentation/input/iforce-protocol.txt index afed1ae093ed..3ac92413c874 100644 --- a/Documentation/input/iforce-protocol.txt +++ b/Documentation/input/iforce-protocol.txt @@ -7,7 +7,7 @@ This is not a reference. Comments and corrections are welcome. To contact me, send an email to: johann.deneux@gmail.com ** WARNING ** -I may not be held responsible for any dammage or harm caused if you try to +I shall not be held responsible for any damage or harm caused if you try to send data to your I-Force device based on what you read in this document. ** Preliminary Notes: @@ -151,13 +151,13 @@ OP= ff Query command. Length varies according to the query type. The general format of this packet is: ff 01 QUERY [INDEX] CHECKSUM -reponses are of the same form: +responses are of the same form: FF LEN QUERY VALUE_QUERIED CHECKSUM2 where LEN = 1 + length(VALUE_QUERIED) **** Query ram size **** QUERY = 42 ('B'uffer size) -The device should reply with the same packet plus two additionnal bytes +The device should reply with the same packet plus two additional bytes containing the size of the memory: ff 03 42 03 e8 CS would mean that the device has 1000 bytes of ram available. @@ -234,12 +234,16 @@ is the amount of memory apparently needed for every set of parameters: ** Appendix: How to study the protocol ? ** -1. Generate effects using the force editor provided with the DirectX SDK, or use Immersion Studio (freely available at their web site in the developer section: www.immersion.com) -2. Start a soft spying RS232 or USB (depending on where you connected your joystick/wheel). I used ComPortSpy from fCoder (alpha version!) +1. Generate effects using the force editor provided with the DirectX SDK, or +use Immersion Studio (freely available at their web site in the developer section: +www.immersion.com) +2. Start a soft spying RS232 or USB (depending on where you connected your +joystick/wheel). I used ComPortSpy from fCoder (alpha version!) 3. Play the effect, and watch what happens on the spy screen. A few words about ComPortSpy: -At first glance, this soft seems, hum, well... buggy. In fact, data appear with a few seconds latency. Personnaly, I restart it every time I play an effect. +At first glance, this software seems, hum, well... buggy. In fact, data appear with a +few seconds latency. Personally, I restart it every time I play an effect. Remember it's free (as in free beer) and alpha! ** URLS ** |