TAS5825M: Purepath socket bridge / talk to target without ev-kit

Hi Dav

this function do very useful.

is that possible share us what platform you used in your board design.

i will let our sw development team considering developing this function.

thanks.

jesse

we can help provide an example bridge in python if you add a way to connect to purepath and remote control it.

up to you, either you add a way to "connect to target" in purepath, i.e. enter 127.0.0.1 port 50051
or pure path default has socket listener open on a fixed port, whatever is easiest for you

I would propose a raw socket with a basic framing, but maybe https://grpc.io/ would be an easy way to get libraries ready that can run cross platform in most program languages. that way pure path would just include that library and implement a few rpc methods that can be used to subscribe to changes in the desktop GUI.

scribble below, but something like this would be enough to setup a bridge to any target

import grpc

# basic gRPC class
import purepath

# function to handle i2c writes sent from purepath
def handle_i2c(message):
    print("received message:", message.i2cbuf)
    # pass through to target board
    # i.e. pyserial -> usb-cdc -> mcu -> i2c -> class-d amp(s)

def run():
    # create a gRPC channel to communicate with the server
    with grpc.insecure_channel('localhost:50051') as channel:

        pp = purepath.Console(channel)

        # subscribe to start receiving messages when changing
        # things in purepath console
        i2c_stream = pp.Subscribe(pp.SubscribeRequest())

        # loop through incoming messages from the server
        for message in i2c_stream:
            handle_message(message)

if __name__ == '__main__':
    run()

Hi Dav

thank you very much for you information, i will take it to discuss with our SW team.

before that, we have another way might help you control your amplifier.

our evm board is controlled by the mother board, you can jump i2c and i2s signal to your board.

EVM board link

https://www.ti.com/tool/PUREPATH-CMBEVM?keyMatch=MOTHER%20BOARD

with this method, you can also use our ppc3 to control you amplifiers on the board.

thanks.

jesse

jesse, thanks, yes we already use that method, but too much wiring and not what we want to achieve here.

we need to allow to run "closed case debug/developent", so no jumpers or wiring or ev-kits involved.

please provide a solution to what I described above. its going to be great for many customer.

Dav01

we already start let SW team evaluate how much resource we need for this function.

if we need other information, we will contact you by email.

thanks.

jesse

fantastic! looking forward. 

anything we can try?

sorry for latency.

once i got sw team reply, i will share you the information.

thks.