Arduino basic control via uart of up2stream pro v3

[piccy]

does anyone have knowledge of or basic arduino code i can use as a start to control this device, all i need to do is activate bluetooth mode at the push f a button, dect when bluetooth is not playing so i can releease control of amplifier back to the main automated clock chime and bells playing system after a pre determined time if the bluetooth connection is no longer used.
I have limited knowledge of i2C and serial control , so any starter info would be appreciated .
Thanks in advance

[maettu49]

hi piccy

Here is the UART definition. I am trying to find some help for my project in this forum. but there are probably not many readers and even fewer writers here.

Latest API documents and UART protocols

Please check the following for the UART messages: {param} this is a field for a param, you should replace it with a specified text in actual message to send [ ] optional NA not available message normally query current state when execute with no param, and normally set the value when continued with param execution UART (some model) message need to be terminated with ; uart passthrough tool message need to be sent in this format: MCU+PAS+RAKOIT:{message}& ACPWorkbench …

[piccy]

Hi, not shure what you are asking me here, i managed to get it working and could control the things that i wanted , i have to code somewhere i can find it it for you, may give you a start , the biggest issue i had was cured by using a level shifter circuit to drop the arduino 5v to 3,3v then i found i could get the correct replies from the arylic amp unit before that i would get some response but no sensible information, if i remember i could switch sources , control vol etc and play selected tracks ( ionly needed to play 3 diff tracks) , after i got it that far i switched to a simpler audio / bt system that i could for my project control easier . I dont know if what i wrote will be of use as i dont know what your project is, it was a combination of something a german guy on this forum wrote that got it started, and the suggestions of a few others, then just added more code step by step once i got it to respond to the arduino reliably.
regards Piccy

just as a side note not all the commands in the uart would provide a response back to the arduino.

[maettu49]

i didn’t ask a question. sorry for the misunderstanding.
i had ordered an Up2Stream Pro and a DAC board.
But I received an Up2Stream Pro and an Up2Stream HD DAC.
so I was looking for I2C and came across your post.

in the linked post the UART interface is described.

in my project I want to use the parameter VOL:{volume} via UART to adjust the volume on a Technics SU-A900D via arduino. the Up2Stream HD DAC has an I2C interface instead of the UART.

thanks for the hint. since VOL:{volume} is described as get/set volume, i hope it works.

i still hope that i can find a way to fix the output level of the Up2Stream Pro and still change the parameter VOL:{volume} to use it only as a control signal.

best regards from switzerland
maettu