87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
/*
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* Copyright (c) 2006-2023, 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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* 2023-10-25 Raman Gopalan Initial version
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* 2023-11-06 Raman Gopalan Abstraction for GPIO driver boilerplate
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* 2023-12-01 Raman Gopalan Use Microchip's updated drivers for abstraction
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include "gpio.h"
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#include <rtdbg.h>
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#include "drv_gpio.h"
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#ifdef RT_USING_PIN
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static void at32uc3_pin_mode(struct rt_device *dev, rt_base_t pin, rt_uint8_t mode)
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{
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RT_ASSERT((AVR32_BSP_GPIO_PMIN <= pin) && (pin <= AVR32_BSP_GPIO_PMAX));
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uint32_t gpio_flag = GPIO_DIR_INPUT;
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gpio_enable_gpio_pin(pin);
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/* Decide based on required mode */
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switch (mode)
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{
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case PIN_MODE_OUTPUT:
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gpio_flag = GPIO_DIR_OUTPUT;
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break;
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case PIN_MODE_INPUT:
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gpio_flag = GPIO_DIR_INPUT;
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break;
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case PIN_MODE_INPUT_PULLUP:
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gpio_flag = GPIO_PULL_UP;
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break;
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case PIN_MODE_INPUT_PULLDOWN:
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gpio_flag = GPIO_PULL_DOWN;
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break;
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case PIN_MODE_OUTPUT_OD:
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gpio_flag = GPIO_OPEN_DRAIN;
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break;
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}
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gpio_configure_pin(pin, gpio_flag);
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}
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static void at32uc3_pin_write(struct rt_device *dev, rt_base_t pin, rt_uint8_t value)
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{
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RT_ASSERT((AVR32_BSP_GPIO_PMIN <= pin) && (pin <= AVR32_BSP_GPIO_PMAX));
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if (value == PIN_HIGH)
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{
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gpio_set_gpio_pin(pin);
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}
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else
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{
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gpio_clr_gpio_pin(pin);
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}
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}
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static rt_ssize_t at32uc3_pin_read(struct rt_device *device, rt_base_t pin)
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{
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RT_ASSERT((AVR32_BSP_GPIO_PMIN <= pin) && (pin <= AVR32_BSP_GPIO_PMAX));
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return (gpio_get_pin_value(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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at32uc3_pin_mode,
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at32uc3_pin_write,
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at32uc3_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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#endif /* RT_USING_PIN */
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