The mcHF firmware developers have added a lot of UI functionality that uses the touchscreen, with more coming in the future. Some of these added features are simple conveniences that save the user from going into the menus to change a setting. Others are more involved and they have made touchscreen usage more of a requirement going forward. After investigating how the touchscreen could be enabled for my version of the kit I decided to go ahead with it.
- R30, R31, R32 should be a 0 ohm resistor (this was already done on my board)
- R33 and R34 should be removed
- R34 (right pad) is connected to R47b (bottom pad)
- R33 (right pad) is connected to R47d (bottom pad)
This process was actually far simpler than I had first anticipated and can be completed in under 30 minutes. When the radio is turned on it now shows “Touchscreen: Yes” on the boot screen indicating that the touch sensor is detected by the firmware. In order to test if everything was working properly I used the Button Test function. This is done by holding down any button (other than band minus) while powering on the radio. I then drug my finger around the touchscreen and noted that it correctly read the touch input. With touch enabled it is much easier to change the meter reading as well as toggle from spectrum display to waterfall and switch between the various input methods (microphone, digital, digital iq, line in, etc.) without having to go into the menus.