altos/detherm: Add servo driver

[fw/altos] / src / drivers / ao_servo.h

diff --git a/src/drivers/ao_servo.h b/src/drivers/ao_servo.h
new file mode 100644 (file)
index 0000000..e1df347
--- /dev/null
+++ b/src/drivers/ao_servo.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright © 2016 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_SERVO_H_
+#define _AO_SERVO_H_
+
+void
+ao_servo_run(uint16_t speed, uint8_t dir, uint16_t timeout);
+
+void
+ao_servo_init(void);
+
+#define AO_SERVO_FORE  0
+#define AO_SERVO_BACK  1
+
+/* To configure the servo:
+ *
+ *     #define AO_SERVO_PWM                    <pwm index>
+ *     #define AO_SERVO_DIR_PORT               <gpio>
+ *     #define AO_SERVO_DIR_PIN                <pin>
+ *     #define AO_SERVO_LIMIT_FORE_PORT        <gpio>
+ *     #define AO_SERVO_LIMIT_FORE_PIN         <pin>
+ *     #define AO_SERVO_LIMIT_BACK_PORT        <gpio>
+ *     #define AO_SERVO_LIMIT_BACK_PIN         <pin>
+ */
+
+#endif /* _AO_SERVO_H_ */