Hi Susmita and All
I have been reading this post with some interest. Not so much regarding exactly what you are trying to do but more of if you are asking too much from the devices you are using.
I recently tried to do exactly that but realised early that the devices I was trying to use were unlikely to be suitable. This led to some experimenting and of measurement of the particular limitations.
These devices are Arduino UNO R3 and Arduino NanoEvery and while I appreciate you are working with RPi I feel that the general idea would still apply. The practise of using a device within its particular limitations would apply to most everything I think.
I posted my experiments and results here
Arduino UNO R3 some limitations
if you would like to read through. Although my results are for Arduino and you are using RPi the general idea is the same and may be some help.
Cheers Bob
