altos-avr: Initial OS port to AVR

This is working with output to the serial line

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/src-avr/ao_panic.c b/src-avr/ao_panic.c
new file mode 100644
index 00000000..aa5b9330
--- /dev/null
+++ b/src-avr/ao_panic.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+
+#if !HAS_BEEP
+#define ao_beep(x)
+#endif
+#if !LEDS_AVAILABLE
+#define ao_led_on(x)
+#define ao_led_off(x)
+#endif
+
+static void
+ao_panic_delay(uint8_t n)
+{
+	uint8_t	i = 0, j = 0;
+
+	while (n--)
+		while (--j)
+			while (--i)
+				asm_nop;
+}
+
+void
+ao_panic(uint8_t reason)
+{
+	uint8_t	n;
+
+	__critical for (;;) {
+		ao_panic_delay(20);
+		for (n = 0; n < 5; n++) {
+			ao_led_on(AO_LED_RED);
+			ao_beep(AO_BEEP_HIGH);
+			ao_panic_delay(1);
+			ao_led_off(AO_LED_RED);
+			ao_beep(AO_BEEP_LOW);
+			ao_panic_delay(1);
+		}
+		ao_beep(AO_BEEP_OFF);
+		ao_panic_delay(2);
+#ifndef AVR
+#pragma disable_warning 126
+#endif
+		for (n = 0; n < reason; n++) {
+			ao_led_on(AO_LED_RED);
+			ao_beep(AO_BEEP_MID);
+			ao_panic_delay(10);
+			ao_led_off(AO_LED_RED);
+			ao_beep(AO_BEEP_OFF);
+			ao_panic_delay(10);
+		}
+	}
+}