3 files changed, 23 insertions, 9 deletions
diff --git a/src/nucleao-32/Makefile b/src/nucleao-32/Makefile
index 57fb4cde..69049982 100644
--- a/src/nucleao-32/Makefile
+++ b/src/nucleao-32/Makefile
@@ -27,6 +27,7 @@ ALTOS_SRC = \
 	ao_config.c \
 	ao_task.c \
 	ao_led.c \
+	ao_beep_stm.c \
 	ao_dma_stm.c \
 	ao_stdio.c \
 	ao_panic.c \
@@ -35,21 +36,22 @@ ALTOS_SRC = \
 	ao_usb_stm.c \
 	ao_serial_stm.c \
 	ao_flash_stm.c \
-	ao_lisp_lex.c \
-	ao_lisp_mem.c \
+	ao_lisp_atom.c \
+	ao_lisp_builtin.c \
 	ao_lisp_cons.c \
+	ao_lisp_error.c \
 	ao_lisp_eval.c \
-	ao_lisp_string.c \
-	ao_lisp_atom.c \
+	ao_lisp_frame.c \
 	ao_lisp_int.c \
+	ao_lisp_lambda.c \
+	ao_lisp_lex.c \
+	ao_lisp_mem.c \
 	ao_lisp_poly.c \
-	ao_lisp_builtin.c \
 	ao_lisp_read.c \
 	ao_lisp_rep.c \
-	ao_lisp_frame.c \
-	ao_lisp_error.c \
-	ao_lisp_lambda.c \
 	ao_lisp_save.c \
+	ao_lisp_stack.c \
+	ao_lisp_string.c \
 	ao_lisp_os_save.c
 
 PRODUCT=Nucleo-32
diff --git a/src/nucleao-32/ao_nucleo.c b/src/nucleao-32/ao_nucleo.c
index 3e448865..6b4cbaae 100644
--- a/src/nucleao-32/ao_nucleo.c
+++ b/src/nucleao-32/ao_nucleo.c
@@ -14,13 +14,19 @@
 
 #include <ao.h>
 #include <ao_lisp.h>
+#include <ao_beep.h>
 
 static void lisp_cmd() {
 	ao_lisp_read_eval_print();
 }
 
+static void beep() {
+	ao_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(200));
+}
+
 static const struct ao_cmds blink_cmds[] = {
 	{ lisp_cmd,	"l\0Run lisp interpreter" },
+	{ beep,		"b\0Beep" },
 	{ 0, 0 }
 };
 
@@ -33,6 +39,7 @@ void main(void)
 	ao_dma_init();
 	ao_usb_init();
 	ao_serial_init();
+	ao_beep_init();
 	ao_cmd_init();
 	ao_cmd_register(blink_cmds);
 	ao_start_scheduler();
diff --git a/src/nucleao-32/ao_pins.h b/src/nucleao-32/ao_pins.h
index e631db7b..cee4616f 100644
--- a/src/nucleao-32/ao_pins.h
+++ b/src/nucleao-32/ao_pins.h
@@ -47,7 +47,12 @@
 #define HAS_USB				1
 #define AO_USB_DIRECTIO			0
 #define AO_PA11_PA12_RMP		0
-#define HAS_BEEP			0
+#define HAS_BEEP			1
+
+#define BEEPER_TIMER			2
+#define BEEPER_CHANNEL			4
+#define BEEPER_PORT			(&stm_gpioa)
+#define BEEPER_PIN			3
 
 #define IS_FLASH_LOADER	0