70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-01-28 flybreak first version
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*/
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#include "drv_gpio.h"
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#include <hardware/gpio.h>
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#include <hardware/platform_defs.h>
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static void pico_pin_mode(struct rt_device *dev, rt_base_t pin, rt_uint8_t mode)
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{
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RT_ASSERT((0 <= pin) && (pin < NUM_BANK0_GPIOS));
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gpio_init(pin);
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switch (mode)
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{
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case PIN_MODE_OUTPUT:
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gpio_set_dir(pin, GPIO_OUT);
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break;
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case PIN_MODE_INPUT:
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gpio_set_dir(pin, GPIO_IN);
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break;
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case PIN_MODE_INPUT_PULLUP:
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gpio_pull_up(pin);
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break;
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case PIN_MODE_INPUT_PULLDOWN:
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gpio_pull_down(pin);
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break;
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case PIN_MODE_OUTPUT_OD:
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gpio_disable_pulls(pin);
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break;
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}
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}
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static void pico_pin_write(struct rt_device *dev, rt_base_t pin, rt_uint8_t value)
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{
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RT_ASSERT((0 <= pin) && (pin < NUM_BANK0_GPIOS));
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gpio_put(pin, value);
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}
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static rt_ssize_t pico_pin_read(struct rt_device *device, rt_base_t pin)
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{
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RT_ASSERT((0 <= pin) && (pin < NUM_BANK0_GPIOS));
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return (gpio_get(pin)? PIN_HIGH : PIN_LOW);
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}
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static const struct rt_pin_ops ops =
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{
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pico_pin_mode,
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pico_pin_write,
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pico_pin_read,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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};
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int rt_hw_gpio_init(void)
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{
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rt_device_pin_register("gpio", &ops, RT_NULL);
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return 0;
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}
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INIT_DEVICE_EXPORT(rt_hw_gpio_init);
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