I finally got around to hacking on the Midi Fighter firmware. My first idea is to be able to get the MIDI Clock LED without soldering a new LED onto my Midi Fighter. The fourbanks_off mode, I’m using the top-left LED. In fourbanks_internal mode, I’m using the selected bank LED. In fourbanks_external mode, I’m not using anything.
I’ll probably publish my code to github or something similar in the near future, but in the mean time, here is a diff:
WARNING: I take no responsibility for any damage my code does to your midi fighter, etc, etc
diff --git a/constants.h b/constants.h
index d03d541..30b3acd 100644
--- a/constants.h
+++ b/constants.h
@@ -68,4 +68,7 @@
// Note number of the basenote for the keys
#define MIDI_BASE_NOTE 36
+// midi note led to use for groundfx in fourbanks_off mode
+#define GROUNDFX_LED 48
+
#endif // _CONSTANTS_H_INCLUDED
diff --git a/midifighter.c b/midifighter.c
index 51b0008..dff20d0 100644
--- a/midifighter.c
+++ b/midifighter.c
@@ -684,7 +684,15 @@ void Midifighter_Task(void)
// MIDI keystate array and set an LED bit if that MIDI note has a
// velocity greater than zero.
for (uint8_t i=MIDI_BASE_NOTE; i<MIDI_BASE_NOTE + 16; ++i) {
- if (g_midi_note_state[i] > 0) {
+ if (i == GROUNDFX_LED) {
+ if (g_led_groundfx_counter < 8) {
+ leds |= 1 << midi_note_to_key(i);
+ } else if (g_led_groundfx_counter < 24) {
+ leds |= 0 << midi_note_to_key(i);
+ } else {
+ leds |= 1 << midi_note_to_key(i);
+ }
+ } else if (g_midi_note_state[i] > 0) {
leds |= 1 << midi_note_to_key(i);
}
}
@@ -701,7 +709,15 @@ void Midifighter_Task(void)
// ------------------
// The top four keys display which bank is selected. At least one
// bank is always selected.
- leds = (1 << g_key_bank_selected);
+
+ // Use the selected deck to show groundfx
+ if (g_led_groundfx_counter < 8) {
+ leds = (1 << g_key_bank_selected);
+ } else if (g_led_groundfx_counter < 24) {
+ leds = (0 << g_key_bank_selected);
+ } else {
+ leds = (1 << g_key_bank_selected);
+ }
// Update the bottom 12 LEDs with the MIDI state of the selected
// bank.
I’d love to hear some feedback about this. I’m sure there are better ways to accomplish what I’m doing. Once it is cleaned up, I’ll post the firmware somewhere, as long as there is interest and the DJTT people don’t mind distributing binaries.
Using the bank select LED to also indicate MIDI clock? Great idea!
How to use that code? There’s a command-line utility called “patch” that takes a working set of source files and applies the differences inside the patch file (that thing above) to the source:
WARNING: Neither DJ Tech Tools nor myself guarantee any support whatsoever for this code or firmware. Use at your own risk! I’m happy to help along the way, but I cannot take any responsibility for any problems this code or firmware may cause.
This code is still in development, so there may be bugs. I encourage you to let me know about any problems, or better yet, fix them and contribute your changes back into the project!
Now that we have the scary stuff out of the way, there are two ways to get my modified midi firmware image: the easy way (download the binary), and the fun way (download the source code and build the binary). Let’s start with the fun way!
The above build environment instructions also tell you how to flash your midifighter with your newly built firmware!
The easy way - Downloading the binary
For those of you who just want the binary without all of the fun of compiling from source, you can download it at http://djoverzero.com/midifighter/.
The Mac OS X MF Updater application allows you to select a specific firmware image (instead of downloading the latest one) by going to ‘File’ and then ‘Load HEX…’
I image the Windows version of the MF Updater also has this functionality, but I don’t have a Windows box to test on.
Thanks Overzero - that is a great idea!!! I tried on Mac OS to load the hex, MF successfully flashed but no blinking led… I am certainly doing something wrong.
Make sure you are sending MIDI clock data. In Traktor Preferences, make sure “Send MIDI Clock Data” is checked. Also, in the Master Clock Panel, be sure the Play button under “Send” is selected.
