more stuff

include/encoder.h

 #ifndef __ENCODER_H__
 #define __ENCODER_H__
 
+#include <stdint.h>
+
 void encoder_init(void);
 int32_t encoder_pos(void);
 void encoder_run(void);

include/led.h

 #ifndef __LED_H__
 #define __LED_H__
 
+#include <stdint.h>
+#include <stdbool.h>
+
 void led_init(void);
 void led_set(uint32_t i, bool v);
 

include/sequence.h

 #ifndef __SEQUENCE_H__
 #define __SEQUENCE_H__
 
+#include <stdint.h>
+#include "buttons.h"
+
 void sequence_init(void);
 void sequence_set_bpm(uint32_t new_bpm);
 void sequence_set_beats(uint32_t new_beats);
-void sequence_set(uint32_t beat, bool value);
+void sequence_handle_button(enum buttons btn, bool rec);
 void sequence_run(void);
 
 #endif // __SEQUENCE_H__

include/ui.h

+/*
+ * ui.h
+ *
+ * Copyright (c) 2024 Thomas Buck (thomas@xythobuz.de)
+ *
+ * This program 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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.
+ *
+ * See <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __UI_H__
+#define __UI_H__
+
+void ui_init(void);
+void ui_run(void);
+
+#endif // __UI_H__

src/lcd.c

 static ssd1306_t disp;
 
 void lcd_init(void) {
-    i2c_init(i2c1, 400000);
+    i2c_init(i2c1, 1000 * 1000);
     gpio_set_function(0, GPIO_FUNC_I2C);
     gpio_set_function(1, GPIO_FUNC_I2C);
     gpio_pull_up(0);

src/main.c

 #include "encoder.h"
 #include "lcd.h"
 #include "sequence.h"
+#include "ui.h"
 #include "main.h"
 
 #define WATCHDOG_PERIOD_MS 100
     buttons_init();
     lcd_init();
     sequence_init();
+    ui_init();
     printf("init done\n");
 
     while (1) {
         buttons_run();
         encoder_run();
         sequence_run();
+        ui_run();
     }
 
     return 0;

src/sequence.c

     beats = (new_beats <= MAX_BEATS) ? new_beats : MAX_BEATS;
 }
 
-void sequence_set(uint32_t beat, bool value) {
+static void sequence_set(uint32_t beat, bool value) {
     if (beat < MAX_BEATS) {
         sequence[beat] = value;
     }
 }
 
+void sequence_handle_button(enum buttons btn, bool rec) {
+    // TODO trigger gpio impulse
+
+    if (rec) {
+
+    }
+}
+
 void sequence_run(void) {
     uint32_t now = to_ms_since_boot(get_absolute_time());
 

src/ui.c

+/*
+ * ui.c
+ *
+ * Copyright (c) 2024 Thomas Buck (thomas@xythobuz.de)
+ *
+ * This program 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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.
+ *
+ * See <http://www.gnu.org/licenses/>.
+ */
+
+#include "pico/stdlib.h"
+
+#include "buttons.h"
+#include "ui.h"
+
+static bool rec_held_down = false;
+
+static void ui_buttons(enum buttons btn, bool val) {
+    switch (btn) {
+        case BTN_A:
+        case BTN_B:
+        case BTN_C:
+            if (val) {
+                sequence_handle_button(btn, rec_held_down);
+            }
+            break;
+
+        case BTN_REC:
+            rec_held_down = val;
+            break;
+
+        case BTN_CLICK:
+            break;
+
+        default:
+            break;
+    }
+}
+
+void ui_init(void) {
+    buttons_callback(ui_buttons);
+}
+
+void ui_run(void) {
+
+}