Re: linux and rs-485
Date: 11 Aug 2003 13:23:00 GMT
In article <3F374306.967659C8@lumino.de>, Michael Schnell wrote:
> A quite common (non-standard) modification is a "master/slave RS422
Yup. The places I've worked always referred to that as "4-wire
As opposed to RS-422 which was strictly a point-to-point
solution for two devices each of which had a driver that was
> Here a master sends to many slaves on one pair and all slaves
> send only to that master on another pair. As the slaves only
> send on request of the master bus release timing in not
In fact, it's often best if the master never releases at all
and keeps its driver enabled all the time.
Grant Edwards grante Yow! .. the HIGHWAY is
at made out of LIME JELLO and
visi.com my HONDA is a barbequed
- 1wire timing
... ich habe mal eine Frage zum Timing am 1Wire Bus. ... Und zwar geht es mir um die Zeiten B und D (H-Zustand am Bus): ... das einhalten der Zeit für den kurzen L-Puls A, den langen L-Puls C und das ... Mir geht es um eine Anwendung in der der Master nicht allzu fix ist, ...
- Re: Knowledge in DUP-line protocol?
... short the bus. ... 0,3 - 0,5 ms, ie when the master tries to make a zero by ... If, for some reason, one channel is to be transmitted as a 1 ... might have been dis-connected unless a transmitter is ...
- Re: [RFC/PATCH 0/22] W1: sysfs, lifetime and other fixes
... > which is managed by bus master dirver, but also some logic over it, ... Only if caller would send request and continue one woudl ... > which will implement only read/write interface. ...
- [PATCH v3] i2c/mux: Driver for PCA9541 I2C Master Selector
... This patch adds support for PCA9541, an I2C Bus Master Selector. ... The driver is modeled as single channel I2C Multiplexer to be able to utilize ... Added more detailed description and reasoning why the driver was implemented ...
- [PATCH] w1: Updates the w1 documentation (w1.generic)
... When some device is found on the bus, ... -checks if driver for it's family is loaded. ... +All w1 slave devices must be connected to a w1 bus master device. ...