altos: Add attiny architecture files

[fw/altos] / src / attiny / ao_arch.h

diff --git a/src/attiny/ao_arch.h b/src/attiny/ao_arch.h
new file mode 100644 (file)
index 0000000..c34206e
--- /dev/null
+++ b/src/attiny/ao_arch.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright © 2011 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.
+ */
+
+#ifndef _AO_ARCH_H_
+#define _AO_ARCH_H_
+
+#include <stdio.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/sleep.h>
+
+#define F_CPU  8000000UL       // 8 MHz
+
+/*
+ * AVR definitions and code fragments for AltOS
+ */
+
+#define AO_STACK_SIZE  116
+
+/* Various definitions to make GCC look more like SDCC */
+
+#define ao_arch_naked_declare  __attribute__((naked))
+#define ao_arch_naked_define
+#define __pdata
+#define __data
+#define __xdata
+#define __code const
+#define __reentrant
+#define __critical
+#define __interrupt(n)
+#define __at(n)
+
+#define ao_arch_reboot()       /* XXX */
+
+#define ao_arch_nop()          asm("nop")
+
+#define ao_arch_interrupt(n)   /* nothing */
+
+#undef putchar
+#undef getchar
+#define putchar(c)     ao_putchar(c)
+#define getchar                ao_getchar
+
+#define ao_arch_cpu_idle() do {                        \
+               sleep_enable();                 \
+               sei();                          \
+               sleep_cpu();                    \
+               sleep_disable();                \
+       } while (0)
+
+#define ao_arch_critical(b) do { cli(); do { b } while (0); sei(); } while (0)
+
+#define ao_mutex_get(m)
+#define ao_mutex_put(m)
+
+void
+ao_delay_until(uint16_t target);
+
+/* We can't hit 100 Hz, but we can hit 125 */
+#define AO_HERTZ       125
+
+void
+ao_eeprom_read(uint16_t addr, void *buf, uint16_t len);
+
+void
+ao_eeprom_write(uint16_t addr, void *buf, uint16_t len);
+
+#endif /* _AO_ARCH_H_ */