From df5950d5baedea61eb51b674077afe00218a83ce Mon Sep 17 00:00:00 2001
From: Making Sound Machines <roland@makingsoundmachines.com>
Date: Thu, 1 Aug 2024 22:57:22 +0200
Subject: Unprinted pad sets MIDI I/O channels

---
 plink0A6.bin             | Bin 0 -> 1048576 bytes
 plink0A6.uf2             | Bin 0 -> 874496 bytes
 sw/Core/Src/config.h     |   3 ++-
 sw/Core/Src/params.h     |  12 ++++++++++--
 sw/Core/Src/params_new.h |   4 ++--
 sw/Core/Src/plinky.c     |  27 ++++++++++++++++++++++++---
 sw/Core/Src/ui.h         |   8 ++++++++
 7 files changed, 46 insertions(+), 8 deletions(-)
 create mode 100644 plink0A6.bin
 create mode 100644 plink0A6.uf2

diff --git a/plink0A6.bin b/plink0A6.bin
new file mode 100644
index 0000000..4fcbada
Binary files /dev/null and b/plink0A6.bin differ
diff --git a/plink0A6.uf2 b/plink0A6.uf2
new file mode 100644
index 0000000..927f4a9
Binary files /dev/null and b/plink0A6.uf2 differ
diff --git a/sw/Core/Src/config.h b/sw/Core/Src/config.h
index 2451839..f86471f 100755
--- a/sw/Core/Src/config.h
+++ b/sw/Core/Src/config.h
@@ -55,4 +55,5 @@
 // 0.A3 - Fixes a USB bug in which some hosts wouldn't recognize Plinky. New startup sequence is plinky_init(), then midiinit().
 // 0.A4 - Disabled MERGE_PLAYBACK in touch.h. DISABLE_AUTOSAVE flag enables Demo Mode - changes are not written to flash. Disables ProgramPage() in params.h
 // 0.A5 - Encoder fix
-#define VERSION2			  "v0.A5"
+// 0.A6 - Set Channels for MIDI in and out (unused pad)
+#define VERSION2			  "v0.A6"
diff --git a/sw/Core/Src/params.h b/sw/Core/Src/params.h
index 905cf3d..910ab6b 100755
--- a/sw/Core/Src/params.h
+++ b/sw/Core/Src/params.h
@@ -200,6 +200,10 @@ const char * const paramnames[P_LAST]={
 	[P_YSHAPE]=I_SHAPE "LFO Shape",
 	[P_YWARP]=I_WARP "LFO Warp",
 
+	[P_MIDI_CH_IN]=I_PIANO "MIDI In Ch",
+	[P_MIDI_CH_OUT]=I_PIANO "MIDI Out Ch",
+
+
 };
 
 #define FLAG_SIGNED 128
@@ -239,8 +243,6 @@ const static u8 param_flags[P_LAST] = {
 	[P_SEQPAT]=24,
 	[P_SEQSTEP] = FLAG_SIGNED + 64,
 
-	
-
 	[P_DLSEND]=0,
 	[P_DLTIME]=FLAG_SIGNED,
 	[P_DLFB]=0,
@@ -306,6 +308,9 @@ const static u8 param_flags[P_LAST] = {
 	[P_SMP_TIME] = FLAG_SIGNED,
 	[P_CV_QUANT] = CVQ_LAST,
 	[P_JIT_PULSE] = FLAG_SIGNED,
+
+	[P_MIDI_CH_IN] = 16,
+	[P_MIDI_CH_OUT] = 16
 };
 
 #define C  ( 0*512)
@@ -1079,6 +1084,9 @@ static Preset const init_params = {
 				[P_YWARP] = {0},
 
 				[P_ACCEL_SENS] = {HALF},
+
+				[P_MIDI_CH_IN] = {0},
+				[P_MIDI_CH_OUT] = {0},
 				}
 }; // init params
 
diff --git a/sw/Core/Src/params_new.h b/sw/Core/Src/params_new.h
index c3a40a8..3da280e 100755
--- a/sw/Core/Src/params_new.h
+++ b/sw/Core/Src/params_new.h
@@ -102,14 +102,14 @@ enum EParams {
 	P_MIXSYNTH = PG_MIX1 * 6,
 	P_MIXWETDRY,
 	P_MIXHPF,
-	P_MIX_UNUSED,
+	P_MIDI_CH_IN,  //P_MIX_UNUSED,
 	P_CV_QUANT,
 	P_HEADPHONE, // system?
 
 	P_MIXINPUT = PG_MIX2 * 6,
 	P_MIXINWETDRY,
 	P_SYS_UNUSED1,
-	P_SYS_UNUSED2,
+	P_MIDI_CH_OUT, //P_SYS_UNUSED2,
 	P_ACCEL_SENS,
 	P_MIX_WIDTH,
 
diff --git a/sw/Core/Src/plinky.c b/sw/Core/Src/plinky.c
index 90df966..fdf9a9b 100755
--- a/sw/Core/Src/plinky.c
+++ b/sw/Core/Src/plinky.c
@@ -1500,6 +1500,11 @@ const s8 midicctable[128] = {
 	/* 112 */			P_DLRATIO,	P_DLWOB,	P_RVWOB,	-1,			P_JIT_POS,	P_JIT_GRAINSIZE, P_JIT_RATE, P_JIT_PULSE,
 	/* 120 */		-1,			-1,			-1,			-1,			-1,			-1,			-1,			-1,
 };
+
+
+
+
+
 bool midi_receive(unsigned char packet[4]); // usb midi poll
 void processmidimsg(u8 msg, u8 d1, u8 d2);
 bool processusbmidi(void) {
@@ -1532,12 +1537,19 @@ bool send_midimsg(u8 status, u8 data1, u8 data2);
 void processmidimsg(u8 msg, u8 d1, u8 d2) {
 	u8 chan = msg & 15;
 	u8 type = msg >> 4;
-	if ((chan != 0)&&(type != 0xF)) //LPZW KAY Fix for MIDI Sync type == F continue
+
+	//int midi_ch_in = ((GetParam(P_MIDI_CH_IN, 0) * 16)/FULL) & 15;
+	//int midi_ch_in = clampi(((GetParam(P_MIDI_CH_IN, 0) * 15)/FULL),0,15);
+
+	int midi_ch_in = clampi((mini(GetParam(P_MIDI_CH_IN, 0), FULL - 1) * 16) / FULL,0,15);
+
+	//if ((chan != 0)&&(type != 0xF)) // chan != 0 = allow all channels; LPZW KAY Fix for MIDI Sync type == F continue
+	if ((chan != midi_ch_in)&&(type != 0xF)) // allow only selected channel and MIDI sync
 		return; 
 	if (type < 8)
 		return;
 
-//	send_midimsg(msg, d1, d2); // midi echo!
+	//	send_midimsg(msg, d1, d2); // midi echo!
 
 	if (type == 9 && d2 == 0)
 		type = 8;
@@ -2972,13 +2984,22 @@ bool send_midi_serial(const u8 *data, int len) {
 }
 
 bool send_midimsg(u8 status, u8 data1, u8 data2) { // returns false if too full
+
 	u8 len=3;
-	if (status>=0xc0 && status<0xe0)
+
+	if (status>=0xc0 && status<0xe0) // Cn Program Change, Dn Mono / Channel Aftertouch
 		len=2;
 	if (!(status&0x80))
 		return true;
 	if (status == 0x80 && data1 == 0)
 		return true; // er, no
+
+	//int midi_ch_out = ((GetParam(P_MIDI_CH_OUT, 0) * 16)/FULL) & 15;
+	//int midi_ch_out = clampi(((GetParam(P_MIDI_CH_OUT, 0) * 16)/FULL),0,15);
+	int midi_ch_out = clampi((mini(GetParam(P_MIDI_CH_OUT, 0), FULL - 1) * 16) / FULL,0,15);
+
+	if (status<0xf0) status += midi_ch_out; // sets output channel
+
 	u8 buf[4]={status>>4, status,data1,data2};
 	usb_midi_write(buf);
 #ifdef DEBUG
diff --git a/sw/Core/Src/ui.h b/sw/Core/Src/ui.h
index 1a93c8d..9687d0d 100755
--- a/sw/Core/Src/ui.h
+++ b/sw/Core/Src/ui.h
@@ -590,6 +590,14 @@ const char *getparamstr(int p, int mod, int v, char *valbuf, char *decbuf) {
 	case P_ARPOCT:
 		v += (FULL * 10) / displaymax; // 1 based
 		break;
+	case P_MIDI_CH_IN:
+	case P_MIDI_CH_OUT: {
+	    int midich = clampi(vscale,0,15)+1;
+	    int n=sprintf(valbuf, "%d", midich);
+	    if (!decbuf)
+	        decbuf = valbuf + n;
+	    return valbuf;
+	}
 	case P_ARPMODE:
 		return arpmodenames[clampi(vscale, 0, ARP_LAST - 1)];
 	case P_SEQMODE:
-- 
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