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, 39 insertions, 0 deletions

diff --git a/src-avr/ao_romconfig.c b/src-avr/ao_romconfig.c
new file mode 100644
index 00000000..ed6f5e0c
--- /dev/null
+++ b/src-avr/ao_romconfig.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2010 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"
+
+#ifdef AVR
+__code struct ao_romconfig ao_romconfig __attribute__ ((section("romconfig")))
+#else
+__code __at (0x00a0) struct ao_romconfig ao_romconfig
+#endif
+= {
+	.version = AO_ROMCONFIG_VERSION,
+	.check = ~AO_ROMCONFIG_VERSION,
+	.serial_number = 0,
+	/*
+	 * For 434.550MHz, the frequency value is:
+	 *
+	 * 434.550e6 / (24e6 / 2**16) = 1186611.2
+	 *
+	 * This value is stored in a const variable so that
+	 * ao-load can change it during programming for
+	 * devices that have no eeprom for config data.
+	 */
+	.radio_cal = 1186611
+};