fix bw_env_gen uninit var + beginning of daisy synth examples

examples/common/daisy-seed/synth.cpp

@@ -0,0 +1,125 @@
+#include "daisy_seed.h"
+#include "config.h"
+#include "config_daisy_seed.h"
+
+#define BLOCK_SIZE 32
+
+using namespace daisy;
+
+DaisySeed hardware;
+CpuLoadMeter loadMeter;
+MidiUsbHandler midi;
+
+P_TYPE instance;
+
+float buf[2][BLOCK_SIZE];
+float *bufs[2] = { buf[0], buf[1] };
+
+static void AudioCallback(
+		AudioHandle::InterleavingInputBuffer in,
+		AudioHandle::InterleavingOutputBuffer out,
+		size_t size) {
+	loadMeter.OnBlockStart();
+	const size_t n = size >> 1;
+	P_PROCESS(&instance, nullptr, bufs, n);
+	for (size_t i = 0; i < n; i++) {
+		const size_t j = i << 1;
+		out[j] = buf[0][i];
+#if NUM_CHANNELS_OUT > 1
+		out[j + 1] = buf[1][i];
+#else
+		out[j + 1] = 0.f;
+#endif
+	}
+	loadMeter.OnBlockEnd();
+}
+
+int main() {
+	hardware.Configure();
+	hardware.Init();
+
+	hardware.SetAudioBlockSize(BLOCK_SIZE);
+	float sample_rate = hardware.AudioSampleRate();
+
+	P_INIT(&instance);
+	P_SET_SAMPLE_RATE(&instance, sample_rate);
+	
+//	hardware.StartLog();
+
+	loadMeter.Init(sample_rate, BLOCK_SIZE);
+
+	P_RESET(&instance);
+
+	MidiUsbHandler::Config midi_cfg;
+	midi_cfg.transport_config.periph = MidiUsbTransport::Config::INTERNAL;
+	midi.Init(midi_cfg);
+	
+	hardware.StartAudio(AudioCallback);
+	
+//	int i = 0;
+	while (1) {
+		midi.Listen();
+		while (midi.HasEvents()) {
+			MidiEvent ev = midi.PopEvent();
+			switch (ev.type) {
+			case NoteOn:
+			{
+				NoteOnEvent v = ev.AsNoteOn();
+				P_NOTE_ON(&instance, v.note, v.velocity);
+			}
+				break;
+			case NoteOff:
+			{
+				NoteOffEvent v = ev.AsNoteOff();
+				P_NOTE_OFF(&instance, v.note);
+			}
+				break;
+#ifdef P_PITCH_BEND
+			case PitchBend:
+			{
+				PitchBendEvent v = ev.AsPitchBend();
+				P_PITCH_BEND(&instance, v.value);
+			}
+#endif
+				break;
+			case ControlChange:
+			{
+				ControlChangeEvent v = ev.AsControlChange();
+#ifdef P_MOD_WHEEL
+				if (v.control_number == 1)
+					P_MOD_WHEEL(&instance, v.value);
+				else {
+#endif
+					for (int i = 0; i < NUM_CCS; i++)
+						if (v.control_number == config_ccs[i].cc)
+							P_SET_PARAMETER(&instance, config_ccs[i].param_index, v.value);
+#ifdef P_MOD_WHEEL
+				}
+#endif
+			}
+				break;
+			default:
+				break;
+			}
+		}
+		/*
+		i++;
+		if (i == 500) {
+			const float avgLoad = loadMeter.GetAvgCpuLoad();
+			const float maxLoad = loadMeter.GetMaxCpuLoad();
+			const float minLoad = loadMeter.GetMinCpuLoad();
+			hardware.PrintLine("---");
+			for (int i = 0; i < NUM_PARAMETERS; i++)
+				if (config_parameters[i].out)
+					hardware.PrintLine("%s: %f", config_parameters[i].name, P_GET_PARAMETER(&instance, i));
+			hardware.PrintLine("---");
+			hardware.PrintLine("Processing Load %:");
+			hardware.PrintLine("Max: " FLT_FMT3, FLT_VAR3(maxLoad * 100.0f));
+			hardware.PrintLine("Avg: " FLT_FMT3, FLT_VAR3(avgLoad * 100.0f));
+			hardware.PrintLine("Min: " FLT_FMT3, FLT_VAR3(minLoad * 100.0f));
+			i = 0;
+		}
+		*/
+		System::Delay(1);
+	}
+}

examples/synth_mono/daisy-seed/Makefile

@@ -0,0 +1,9 @@
+ROOT_DIR := $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
+
+TARGET = bw_example_synth_mono
+
+C_SOURCES += ${ROOT_DIR}/../src/bw_example_synth_mono.c
+
+SYNTH := yes
+
+include ${ROOT_DIR}/../../common/daisy-seed/daisy-seed.mk

examples/synth_mono/daisy-seed/config_daisy_seed.h

@@ -0,0 +1,35 @@
+/*
+ * Brickworks
+ *
+ * Copyright (C) 2023 Orastron Srl unipersonale
+ *
+ * Brickworks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * Brickworks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Brickworks.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File authors: Stefano D'Angelo
+ */
+
+#ifndef _CONFIG_DAISY_SEED_H
+#define _CONFIG_DAISY_SEED_H
+
+struct config_pin {
+	int	param_index;
+	int	pin;
+};
+
+#define NUM_PINS 	1
+
+static struct config_pin config_pins[NUM_PINS] = {
+	{ 0, 15 }
+};
+
+#endif

examples/synth_simple/daisy-seed/Makefile

@@ -0,0 +1,9 @@
+ROOT_DIR := $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
+
+TARGET = bw_example_synth_simple
+
+C_SOURCES += ${ROOT_DIR}/../src/bw_example_synth_simple.c
+
+SYNTH := yes
+
+include ${ROOT_DIR}/../../common/daisy-seed/daisy-seed.mk

examples/synth_simple/daisy-seed/config_daisy_seed.h

@@ -0,0 +1,44 @@
+/*
+ * Brickworks
+ *
+ * Copyright (C) 2023 Orastron Srl unipersonale
+ *
+ * Brickworks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * Brickworks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Brickworks.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File authors: Stefano D'Angelo
+ */
+
+#ifndef _CONFIG_DAISY_SEED_H
+#define _CONFIG_DAISY_SEED_H
+
+struct config_cc {
+	int		param_index;
+	unsigned char	cc;
+};
+
+#define NUM_CCS 	10
+
+static struct config_cc config_ccs[NUM_CCS] = {
+	{ 0, 32 },
+	{ 1, 33 },
+	{ 2, 34 },
+	{ 3, 35 },
+	{ 4, 36 },
+	{ 5, 37 },
+	{ 6, 38 },
+	{ 7, 39 },
+	{ 8, 40 },
+	{ 9, 41 }
+};
+
+#endif

include/bw_env_gen.h

@@ -1,7 +1,7 @@
 /*
  * Brickworks
  *
- * Copyright (C) 2022 Orastron Srl unipersonale
+ * Copyright (C) 2022, 2023 Orastron Srl unipersonale
  *
  * Brickworks is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@
 
 /*!
  *  module_type {{{ dsp }}}
- *  version {{{ 0.2.0 }}}
+ *  version {{{ 0.3.0 }}}
  *  requires {{{ bw_config bw_common bw_one_pole bw_math }}}
  *  description {{{
  *    Linear ADSR envelope generator.
@@ -40,6 +40,12 @@
  *  }}}
  *  changelog {{{
  *    <ul>
+ *      <li>Version <strong>0.3.0</strong>:
+ *        <ul>
+ *          <li>Avoid a warning related to a potentially uninitialized
+ *          variable.</li>
+ *        </ul>
+ *      </li>
  *      <li>Version <strong>0.2.0</strong>:
  *        <ul>
  *          <li>Refactored API.</li>
@@ -301,7 +307,7 @@ static inline void bw_env_gen_update_state_ctrl(const bw_env_gen_coeffs *BW_REST
 }
 
 static inline float bw_env_gen_process1(const bw_env_gen_coeffs *BW_RESTRICT coeffs, bw_env_gen_state *BW_RESTRICT state) {
-	float v;
+	float v = 0.f;
 	switch (state->phase) {
 	case bw_env_gen_phase_attack:
 		v = state->y_z1 + coeffs->attack_inc;