pbio/drv/sound/sound_ev3: Create stub sound driver

Author: ArcaneNibble

bricks/_common/sources.mk

@@ -176,6 +176,7 @@ PBIO_SRC_C = $(addprefix lib/pbio/,\
 	drv/reset/reset_ev3.c \
 	drv/resistor_ladder/resistor_ladder.c \
 	drv/sound/beep_sampled.c \
+	drv/sound/sound_ev3.c \
 	drv/sound/sound_nxt.c \
 	drv/sound/sound_stm32_hal_dac.c \
 	drv/stack/stack_embedded.c \

lib/pbio/drv/sound/sound_ev3.c

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 The Pybricks Authors
+
+#include <pbdrv/config.h>
+
+#if PBDRV_CONFIG_SOUND_EV3
+
+#include <stdint.h>
+
+void pbdrv_sound_stop() {
+
+}
+
+void pbdrv_beep_start(uint32_t frequency, uint16_t sample_attenuator) {
+
+}
+
+void pbdrv_sound_init() {
+
+}
+
+#endif // PBDRV_CONFIG_SOUND_EV3

lib/pbio/platform/ev3/pbdrvconfig.h

@@ -71,6 +71,9 @@
 #define PBDRV_CONFIG_RESET                          (1)
 #define PBDRV_CONFIG_RESET_EV3                      (1)
 
+#define PBDRV_CONFIG_SOUND                          (1)
+#define PBDRV_CONFIG_SOUND_EV3                      (1)
+
 #define PBDRV_CONFIG_UART                           (1)
 #define PBDRV_CONFIG_UART_DEBUG_FIRST_PORT          (1)
 #define PBDRV_CONFIG_UART_EV3                       (1)

pybricks/hubs/pb_type_ev3brick.c

@@ -20,6 +20,7 @@ typedef struct _hubs_EV3Brick_obj_t {
     mp_obj_t buttons;
     mp_obj_t light;
     mp_obj_t screen;
+    mp_obj_t speaker;
     mp_obj_t system;
 } hubs_EV3Brick_obj_t;
 
@@ -53,6 +54,7 @@ static mp_obj_t hubs_EV3Brick_make_new(const mp_obj_type_t *type, size_t n_args,
     self->buttons = pb_type_Keypad_obj_new(pb_type_ev3brick_button_pressed);
     self->light = common_ColorLight_internal_obj_new(pbsys_status_light_main);
     self->screen = pb_type_Image_display_obj_new();
+    self->speaker = mp_call_function_0(MP_OBJ_FROM_PTR(&pb_type_Speaker));
     self->system = MP_OBJ_FROM_PTR(&pb_type_System);
 
     return MP_OBJ_FROM_PTR(self);
@@ -63,6 +65,7 @@ static const pb_attr_dict_entry_t hubs_EV3Brick_attr_dict[] = {
     PB_DEFINE_CONST_ATTR_RO(MP_QSTR_buttons, hubs_EV3Brick_obj_t, buttons),
     PB_DEFINE_CONST_ATTR_RO(MP_QSTR_light, hubs_EV3Brick_obj_t, light),
     PB_DEFINE_CONST_ATTR_RO(MP_QSTR_screen, hubs_EV3Brick_obj_t, screen),
+    PB_DEFINE_CONST_ATTR_RO(MP_QSTR_speaker, hubs_EV3Brick_obj_t, speaker),
     PB_DEFINE_CONST_ATTR_RO(MP_QSTR_system, hubs_EV3Brick_obj_t, system),
     PB_ATTR_DICT_SENTINEL
 };