diff options
Diffstat (limited to 'src/drivers/stm32/drv_pwm_servo.h')
-rw-r--r-- | src/drivers/stm32/drv_pwm_servo.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/drivers/stm32/drv_pwm_servo.h b/src/drivers/stm32/drv_pwm_servo.h new file mode 100644 index 000000000..5dd4cf70c --- /dev/null +++ b/src/drivers/stm32/drv_pwm_servo.h @@ -0,0 +1,66 @@ +/**************************************************************************** + * + * Copyright (C) 2012 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file drv_pwm_servo.h + * + * stm32-specific PWM output data. + */ + +#pragma once + +#include <drivers/drv_pwm_output.h> + +/* configuration limits */ +#define PWM_SERVO_MAX_TIMERS 4 +#define PWM_SERVO_MAX_CHANNELS 8 + +/* array of timers dedicated to PWM servo use */ +struct pwm_servo_timer { + uint32_t base; + uint32_t clock_register; + uint32_t clock_bit; + uint32_t clock_freq; +}; + +/* array of channels in logical order */ +struct pwm_servo_channel { + uint32_t gpio; + uint8_t timer_index; + uint8_t timer_channel; + servo_position_t default_value; +}; + +/* supplied by board-specific code */ +__EXPORT extern const struct pwm_servo_timer pwm_timers[PWM_SERVO_MAX_TIMERS]; +__EXPORT extern const struct pwm_servo_channel pwm_channels[PWM_SERVO_MAX_CHANNELS]; |