Tone 2 Makers Edition - Not working with VIM4 via GPIO

Technical Support
#1

I’m trying to use the Tone 2 with the VIM4 via the GPIO - Previously the Tone 1 has been working.

The Tone 2 works via USB C - updated to firmware version 1.30

When connected via the GPIO to the VIM4 there is no power led & the board does not function.

VIM4 has been updated via Oowow and tried with a clean install from Oowow - Ubuntu 22.04 Gnome linux 5.4 fenix 1.4 221229

Any help appreciated

#2

Hi
You should not connect VIM4 to Tone2 Makers directly by 40-Pin Header,because the definitions of Tone2 Pin 7 and Pin 8 are different from VIM4.You can find the definitions of Tone2 40-Pin Header from the last page of schematic.
You can use both USB or I2S of the 40-Pin Header.The details are following below.

NO. Audio Input Source Nets need to be connected Pins need to be connected Input Selection
Operations from Tone2		 Operations from VIM4
1 USB ■DCIN_GPIO
■GPIO_DP
■GPIO_DN
■GPIO_UART_TX
■GPIO_UART_RX		 ■GND
■GPIO_I2S_DECT
■GPIO_USB_DECT		 ■PIN1
■PIN3
■PIN4
■PIN15
■PIN16		 ■PIN21
■PIN35
■PIN37		 USB or Auto GPIO_I2S_DETECT=0;
GPIO_USB_DECT=1;
2 I2S ■DCIN_GPIO
■GPIO_UART_TX
■GPIO_UART_RX		 ■GND
■GPIO_I2S_BCLK
■GPIO_I2S_SDI
■GPIO_I2S_LRCK
■GPIO_I2S_DECT
■GPIO_USB_DECT		 ■PIN1
■PIN15
■PIN16		 ■PIN21
■PIN29
■PIN31
■PIN32
■PIN35
■PIN37		 I2S or Auto GPIO_I2S_DETECT=1;
GPIO_USB_DECT=0;
#3

Hi Eric,

This makes sense - the instructions provided suggest to look in products:audio:tone2:start [Khadas Docs] for the info on this - however this does not exist.

I’ve followed your pin out and the board now powers on correctly - however its not detected by the VIM4. Do I need to update something in relation to the ‘Operations from VIM4’ column and do you have instructions for this?

Thanks

#4

Hi
If you connect vim4 by usb,vim4 can recognize tone2.If you use i2s,it cannot. You should update vim4 firmware to do the operations as I mentioned.

#5

Hi Eric,

So I have the Tone 2 Connected to the VIM4 via the GPIO Connector - as per the USB option above

Pins 1,3,4,15,16,21,35,37

It powers up from the VIM4 - I can select Auto or USB via the encoder

The VIM4 Does not detect the Tone 2 - The only Audio out available is Analogue Audio - Built-in

$lsusb shows

3 x USB Hub entries
1 x Logitech USB Receiver

If I connect directly via the USB C port the Tone 2 is available in the Audio Output &

$lsusb shows:

Bus 001 Device 004 Khadas Tone2 Multichannel

Thanks again for your help with this

#6

Hi arts-projects,

This firmware not right, it lead to your Tone2 back to factory test firmware, so it display"Tone2 Multichannel". you need to upgrade your Tone2 firmware to dual-v1.23. and then it will display"Tone2"

Use Tone2 Makerkit at VIM4:

#7

Hi Kenny,

Thanks for these details - this helps a lot, I had downloaded the firmware from:

slightly confusing there are 2 x locations.

It’s all working now - though just disconnecting pins 7&8 the board powered but didnt boot - with just pins 2,3,4,5,35&37 its now all working.

Is there a way to change the Tone2 setting in ubuntu via the command line? We have the mouse and GUI disabled on the version we wish to add this to?

Cheers

Andy

#8

@arts-projects

fenix/tone2.sh at master · khadas/fenix (github.com)
fenix/tone2-control.sh at master · khadas/fenix (github.com)

This is the source code of the application, if you need to integrate your own application, you can refer to this source code.