# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1434037596 -7200
# Node ID 799a20a2091fc5b3c5772fe7bcf7b9d426af8101
# Parent  283d5297ee031bc31ffb70dba26d9092b6cd60f1
Added a buzzer for testing purposes.

diff -r 283d5297ee03 -r 799a20a2091f stage2/board-nanonote.c
--- a/stage2/board-nanonote.c	Thu Jun 11 00:53:12 2015 +0200
+++ b/stage2/board-nanonote.c	Thu Jun 11 17:46:36 2015 +0200
@@ -75,6 +75,8 @@
 
 	__gpio_as_input(GPIO_USB_DETECT);
 	__gpio_enable_pull(GPIO_USB_DETECT);
+
+	__gpio_as_pwm4();
 }
 
 void cpm_init(void)
@@ -133,3 +135,21 @@
 
 	return 0;
 }
+
+void buzzer_init(void)
+{
+	volatile int i;
+
+	__tcu_select_extalclk(4);
+	__tcu_select_clk_div64(4);
+	__tcu_enable_pwm_output(4);
+
+	__tcu_set_full_data(4, 576);
+	__tcu_set_half_data(4, 576 / 2);
+	__tcu_set_count(4, 0);
+	__tcu_start_counter(4);
+
+	for (i = 0; i < 20000000; i++);
+
+	__tcu_stop_counter(4);
+}
diff -r 283d5297ee03 -r 799a20a2091f stage2/board-nanonote.h
--- a/stage2/board-nanonote.h	Thu Jun 11 00:53:12 2015 +0200
+++ b/stage2/board-nanonote.h	Thu Jun 11 17:46:36 2015 +0200
@@ -7,5 +7,6 @@
 void cpm_init(void);
 void rtc_init(void);
 int timer_init(void);
+void buzzer_init(void);
 
 #endif /* __BOARD_NANONOTE_H__ */
diff -r 283d5297ee03 -r 799a20a2091f stage2/stage2.c
--- a/stage2/stage2.c	Thu Jun 11 00:53:12 2015 +0200
+++ b/stage2/stage2.c	Thu Jun 11 17:46:36 2015 +0200
@@ -61,6 +61,7 @@
 
 	gpio_init2();
 	cpm_init();
+	buzzer_init();
 	rtc_init();
 	timer_init();
 	lcd_init();