MCP23017
Source select at startup
This requires the use of the MCP23017. When the MCP23017 (with address=0x00) is detected at startup, then the source selection by means of external input is enabled.
When source=systime and auto_start=1 (see configuration), then the source select is bypassed. - A rotary encoder can be used for selecting the source.
- Two buttons <LEFT>/<RIGHT> can be used for selecting the source. Mapping on the rotary encoder behavior:
When the appropriate source is selected, then the <SELECT> button must be pressed.
Up to 8 led's can be used for showing the selection. The selection is also showed on all other supported displays.
The mapping for the buttons/rotary encoder is as following: - GPA0 -> Rotary encoder Pin A
- GPA1 -> Rotary encoder Pin B
- GPA2 -> Button <SELECT>
- GPA3 -> Button <LEFT>
- GPA4 -> Button <RIGHT>
- GPA5 -> Button <START>
- GPA6 -> Button <STOP>
- GPA7 -> Button <RESUME>/<RESET>
The GPA pins are active low (connecting the other side of the button to ground).
The source select led's are mapped as following: - GPB0 -> led0 [source=ltc]
- GPB1 -> led1 [source=artnet]
- GPB2 -> led2 [source=midi]
- GPB3 -> led3 [source=tcnet]
- GPB4 -> led4 [source=internal]
- GPB5 -> led5 [source=rtpmidi]
- GPB6 -> led6 [source=systime]
- GPB7 -> led7 - currently not used
The MCP23017 INTA must be connected to GPIO7 (pin 12).
Using the rotary for setting Start/Stop time
When in source select and Internal is selected then press <START> for changing the Start time and/or Frame rate. With pressing <START> there is toggle between editing the Start time and Frame rate.
With <LEFT>/<RIGHT> the cursor can be moved in the Start time. Then with the rotary encoder you can change the digit/tens.
Press <SELECT> for activating the selected/updated Start time and/or Frame rate.
Press <RESUME> for getting out of editing mode. Skip Forward and BackwardAfter <STOP> is pressed or triggered, then with buttons <LEFT> or <RIGHT> the seconds are skipped as defined with skip_seconds=. |