TMS570LC4357: speed sensor

Hi Jeeva,

You would like to do something like above right?

Yes, in this case you will get same results for both the quadrature encoders if your configurations were same for both the encoders.

May be a very small variations can be observed because, both the encoders will not sample the signal at the same instances of time right, there might be some microseconds variations can be seen.

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Thanks & regards,
Jagadish.

yes  sir  what  mention  same  like iam trying  to do  in  microcontroller TMS570LS1227  , but  schematic  of  this  conntroller is not getting sir , if we try like that  same configuration   but different  code composer i means two seprate project i  need to create and observe  output in  two  different  doclight sir 

Hi Jeev,

Understood.

Just try on yourself as we already did for eQEP2. If you face any issues in your implementation then i will assist you.

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Thanks,

Jagadish.

dear   sir  last  time  to direction  we have used shift  ( 1<<5) of  status register  it shown   correction but now  same code iam using  but direction is toggling sir , forward , backward ,   it not showing excite direction why what will be problem , this problwm in quadrature pulse and  even  RTI and gio constant pulse both  please response fast sir,

thank you ,

jeeva

problem solved  , i did not connect common ground due  to that its  giving wrong value , 

thank you ,

jeeva 

dear  sir  i want to see both  channel output  , will it   possible to see in same  doclight  , both EQEP1A ,EQEP1B  and  EQEP2A ,EQEP2B  , if  i try  make using two seprate doclight is not happen , in same code only shall i make two  eqepREG1  and  eqepREG2 . make to display in doclight it possible ? 

reply soon as possible 

thank you

jeeva

Hi Jeev,

jeev rathinam said:

dear  sir  i want to see both  channel output  , will it   possible to see in same  doclight  , both EQEP1A ,EQEP1B  and  EQEP2A ,EQEP2B  , if  i try  make using two seprate doclight is not happen , in same code only shall i make two  eqepREG1  and  eqepREG2 . make to display in doclight it possible ? 

Don't try to open two docklights. Only one docklight will work for one com port (one serial port or one SCI).

Just mention the eQEP number on the output.

Example:

You can print like 

"Speed1" for the eQEP1 and "Speed2" for the eQEP2. Something like this you can do.

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Thanks & regards,
Jagadish.

dear sir ,  last time  u produce constant pulse using GIO and  RTI   in controller 4357  now same  code some modification is according to controller  TMS570ls1227  , iam try to give  input eqep1A  and  input eqep1B  but its   not  accepting sir .  why ? what will be reason,

reply soon sir,

thank you,

jeeva

dear sir  after connecting output  of  quadrature pulse generator  to  micro controller  TMS570LS1227   , from eqep2A  and  eqep2B  is giving correct value , but  eqep1A  and  eqep1B   is giving  wrong value , what will be reason sir , kindly  reply  fast sir ,

thank you,

jeeva

May be configuration issue, please make sure all the settings of eQEP1 to be same as eQEP2.

configuration  every thing for both , instead of giving individual ,  from  channel 2  which is giving correct value , that split into part and i gave sir  then getting both  side same output , if i give seprate then its giving one as correct other one as wrong .

thank you

jeeva