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| author | Tero Kontkanen <tero.kontkanen@granitedevices.fi> | 2016-10-28 15:18:37 +0300 |
|---|---|---|
| committer | Tero Kontkanen <tero.kontkanen@granitedevices.fi> | 2016-10-28 15:18:37 +0300 |
| commit | f629f3a69e092a9299fd0d70dddd2efa6bbee2e7 (patch) | |
| tree | 0392c5a173b9f5e32115b764ceafcb559d2d2ef3 /simplemotion.h | |
| parent | 0490facebd118837d821d8d382dafc16cba475dc (diff) | |
| parent | fa9c9212d7e25e9eacbbfcc4e6a516b4d48ebbb5 (diff) | |
| download | SimpleMotionV2-f629f3a69e092a9299fd0d70dddd2efa6bbee2e7.tar.gz SimpleMotionV2-f629f3a69e092a9299fd0d70dddd2efa6bbee2e7.zip | |
Merge branch 'develop'
Diffstat (limited to 'simplemotion.h')
| -rw-r--r-- | simplemotion.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/simplemotion.h b/simplemotion.h index 056c745..913a595 100644 --- a/simplemotion.h +++ b/simplemotion.h @@ -81,6 +81,24 @@ typedef enum _smVerbosityLevel {Off,Low,Mid,High,Trace} smVerbosityLevel; */
LIB smbus smOpenBus( const char * devicename );
+/** Change baudrate of SM communication port. This does not affect already opened ports but the next smOpenBus will be opened at the new speed.
+ Calling this is optional. By default SM bus and all slave devices operates at 460800 BPS speed.
+ Parameters:
+ -bps: bus speed in bits per second. for possible choices, see rs232.c (but note that all speeds are not necessarily supported by SM devices)
+ Typical usage is:
+ - first call smSetParameter(handle,0,SMP_BUS_SPEED,N) to change speed of all connected slaves to N PBS
+ - then close port with smCloseBus
+ - then call smSetBaudrate(N)
+ - then open bus again with smOpenBus
+
+ Note that in upcoming SM device firmware versions, bitrate will be reset to default (460800) if device side SM bus watchdog timer has been enabled, and it timeouts.
+ This allows re-establishing connection at defautl speed if connection breaks up and SM bus watchdog timeout gets exceeded. To identify is device supports this,
+ read parameter SMP_SM_VERSION. Values above 25 support this feature. Value 25 and below will not reset baudrate.
+
+ Note also that SMP_BUS_SPEED will not be saved in device flash memory - it will reset to default at every reset & power on.
+ */
+LIB void smSetBaudrate( unsigned long pbs );
+
/** Set timeout of how long to wait reply packet from bus. Must be set before smOpenBus and cannot be changed afterwards
* max value 5000ms. In unix this is rounded to 100ms (rounding downwards), so 99 or less gives 0ms timeout.
*
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