diff options
Diffstat (limited to 'libopencm3/include/libopencm3/sam/gpio.h')
-rw-r--r-- | libopencm3/include/libopencm3/sam/gpio.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libopencm3/include/libopencm3/sam/gpio.h b/libopencm3/include/libopencm3/sam/gpio.h new file mode 100644 index 0000000..20fd9ad --- /dev/null +++ b/libopencm3/include/libopencm3/sam/gpio.h @@ -0,0 +1,51 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef SAM3X_GPIO_H +#define SAM3X_GPIO_H + +#include <libopencm3/sam/pio.h> + +/* flags may be or'd together, but only contain one of + * GPOUTPUT, PERIPHA and PERIPHB */ +enum gpio_flags { + GPIO_FLAG_GPINPUT = 0, + GPIO_FLAG_GPOUTPUT = 1, + GPIO_FLAG_PERIPHA = 2, + GPIO_FLAG_PERIPHB = 3, + GPIO_FLAG_OPEN_DRAIN = 4, + GPIO_FLAG_PULL_UP = 8, +}; + +void gpio_init(uint32_t gpioport, uint32_t pins, enum gpio_flags flags); + +static inline void gpio_set(uint32_t gpioport, uint32_t gpios) +{ + PIO_SODR(gpioport) = gpios; +} + +static inline void gpio_clear(uint32_t gpioport, uint32_t gpios) +{ + PIO_CODR(gpioport) = gpios; +} + +void gpio_toggle(uint32_t gpioport, uint32_t gpios); + +#endif + |