diff options
Diffstat (limited to 'nuttx/configs/px4fmu/include/drv_gpio.h')
| -rw-r--r-- | nuttx/configs/px4fmu/include/drv_gpio.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/nuttx/configs/px4fmu/include/drv_gpio.h b/nuttx/configs/px4fmu/include/drv_gpio.h new file mode 100644 index 000000000..22f80d038 --- /dev/null +++ b/nuttx/configs/px4fmu/include/drv_gpio.h @@ -0,0 +1,107 @@ +/**************************************************************************** + * + * 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 GPIO driver interface. + * + * This header defines the basic interface to platform-specific GPIOs. + */ + +#ifndef _BOARD_DRV_GPIO_H +#define _BOARD_DRV_GPIO_H + +/* + * PX4FMU GPIO numbers. + * + * For shared pins, alternate function 1 selects the non-GPIO mode + * (USART2, CAN2, etc.) + */ +#define GPIO_EXT_1 (1<<0) /**< high-power GPIO 1 */ +#define GPIO_EXT_2 (1<<1) /**< high-power GPIO 1 */ +#define GPIO_MULTI_1 (1<<2) /**< USART2 CTS */ +#define GPIO_MULTI_2 (1<<3) /**< USART2 RTS */ +#define GPIO_MULTI_3 (1<<4) /**< USART2 TX */ +#define GPIO_MULTI_4 (1<<5) /**< USART2 RX */ +#define GPIO_CAN_TX (1<<6) /**< CAN2 TX */ +#define GPIO_CAN_RX (1<<7) /**< CAN2 RX */ + +/** + * Default GPIO device - other devices may also support this protocol if + * they also export GPIO-like things. This is always the GPIOs on the + * main board. + */ +#define GPIO_DEVICE_PATH "/dev/gpio" + +/* + * IOCTL definitions. + * + * For all ioctls, the (arg) argument is a bitmask of GPIOs to be affected + * by the operation, with the LSB being the lowest-numbered GPIO. + * + * Note that there may be board-specific relationships between GPIOs; + * applications using GPIOs should be aware of this. + */ +#define _GPIOCBASE 0x6700 +#define GPIOC(_x) _IOC(_GPIOCBASE, _x) + +/** reset all board GPIOs to their default state */ +#define GPIO_RESET GPIOC(0) + +/** configure the board GPIOs in (arg) as outputs */ +#define GPIO_SET_OUTPUT GPIOC(1) + +/** configure the board GPIOs in (arg) as inputs */ +#define GPIO_SET_INPUT GPIOC(2) + +/** configure the board GPIOs in (arg) for the first alternate function (if supported) */ +#define GPIO_SET_ALT_1 GPIOC(3) + +/** configure the board GPIO (arg) for the second alternate function (if supported) */ +#define GPIO_SET_ALT_2 GPIOC(4) + +/** configure the board GPIO (arg) for the third alternate function (if supported) */ +#define GPIO_SET_ALT_3 GPIOC(5) + +/** configure the board GPIO (arg) for the fourth alternate function (if supported) */ +#define GPIO_SET_ALT_4 GPIOC(6) + +/** set the GPIOs in (arg) */ +#define GPIO_SET GPIOC(10) + +/** clear the GPIOs in (arg) */ +#define GPIO_CLEAR GPIOC(11) + +/** read all the GPIOs and return their values in *(uint32_t *)arg */ +#define GPIO_GET GPIOC(12) + +#endif /* _DRV_GPIO_H */ |