268 lines
6.2 KiB
C
268 lines
6.2 KiB
C
/*
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* Copyright (c) 2006-2021, YICHIP Technology Co.,Ltd.
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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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* 2021-09-09 WSY first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <board.h>
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#include <rthw.h>
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#define PIN_MAX_NUM (48)
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typedef void (*pin_callback_t)(void *args);
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struct pin
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{
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uint32_t package_index;
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const char *name;
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IRQn_Type irq;
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rt_uint32_t irq_mode;
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pin_callback_t callback;
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void *callback_args;
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};
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typedef struct pin pin_t;
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struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
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{
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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{-1, 0, RT_NULL, RT_NULL},
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};
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static void yc_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode)
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{
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/* Configure GPIO_InitStructure */
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if (mode == PIN_MODE_OUTPUT)
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{
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/* output setting */
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GPIO_CONFIG(pin) = OUTPUT_LOW;
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}
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else if (mode == PIN_MODE_INPUT)
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{
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/* input setting: not pull. */
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GPIO_CONFIG(pin) = INPUT;
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}
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else if (mode == PIN_MODE_INPUT_PULLUP)
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{
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/* input setting: pull up. */
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GPIO_CONFIG(pin) = PULL_UP;
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}
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else if (mode == PIN_MODE_INPUT_PULLDOWN)
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{
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/* input setting: pull down. */
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GPIO_CONFIG(pin) = PULL_DOWN;
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}
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else if (mode == PIN_MODE_OUTPUT_OD)
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{
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/* output setting: od. */
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GPIO_CONFIG(pin) = PULL_UP;
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}
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}
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static void yc_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value)
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{
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if (value)
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{
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GPIO_CONFIG(pin) = OUTPUT_HIGH;
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}
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else
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{
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GPIO_CONFIG(pin) = OUTPUT_LOW;
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}
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}
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static rt_ssize_t yc_pin_read(rt_device_t dev, rt_base_t pin)
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{
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return GPIO_IN(pin / 16) & (1 << (pin % 16)) ? 1 : 0;
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}
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static rt_err_t yc_pin_attach_irq(struct rt_device *device,
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rt_base_t pin,
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rt_uint8_t mode,
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pin_callback_t cb,
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void *args)
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{
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rt_int32_t index = -1;
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rt_base_t level;
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if (pin >= PIN_MAX_NUM)
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{
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return -RT_EINVAL;
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}
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index = pin;
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level = rt_hw_interrupt_disable();
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pin_irq_hdr_tab[index].pin = pin;
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pin_irq_hdr_tab[index].hdr = cb;
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pin_irq_hdr_tab[index].mode = mode;
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pin_irq_hdr_tab[index].args = args;
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rt_hw_interrupt_enable(level);
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return RT_EOK;
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}
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static rt_err_t yc_pin_detach_irq(struct rt_device *device, rt_base_t pin)
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{
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rt_int32_t index = -1;
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rt_base_t level;
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if (pin >= PIN_MAX_NUM)
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{
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return -RT_EINVAL;
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}
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index = pin;
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level = rt_hw_interrupt_disable();
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pin_irq_hdr_tab[index].pin = -1;
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pin_irq_hdr_tab[index].hdr = RT_NULL;
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pin_irq_hdr_tab[index].mode = 0;
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pin_irq_hdr_tab[index].args = RT_NULL;
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rt_hw_interrupt_enable(level);
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return RT_EOK;
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}
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static rt_err_t yc_pin_irq_enable(struct rt_device *device,
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rt_base_t pin,
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rt_uint8_t enabled)
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{
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rt_int32_t index;
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rt_base_t level = 0;
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if (pin >= PIN_MAX_NUM)
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{
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return -RT_EINVAL;
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}
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index = pin;
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if (enabled == PIN_IRQ_ENABLE)
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{
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switch (pin_irq_hdr_tab[index].mode)
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{
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case PIN_IRQ_MODE_RISING:
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break;
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case PIN_IRQ_MODE_FALLING:
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break;
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case PIN_IRQ_MODE_RISING_FALLING:
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break;
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case PIN_IRQ_MODE_HIGH_LEVEL:
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GPIO_CONFIG(pin) = PULL_DOWN;
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GPIO_TRIG_MODE(pin / 16) &= (1 << (pin % 16));
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break;
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case PIN_IRQ_MODE_LOW_LEVEL:
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GPIO_CONFIG(pin) = PULL_UP;
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GPIO_TRIG_MODE(pin / 16) |= (1 << (pin % 16));
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break;
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default:
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rt_hw_interrupt_enable(level);
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return -RT_EINVAL;
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}
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level = rt_hw_interrupt_disable();
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NVIC_EnableIRQ(GPIO_IRQn);
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GPIO_INTR_EN(pin / 16) |= (1 << (pin % 16));
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rt_hw_interrupt_enable(level);
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}
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else if (enabled == PIN_IRQ_DISABLE)
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{
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NVIC_DisableIRQ(GPIO_IRQn);
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GPIO_INTR_EN(pin / 16) &= ~(1 << (pin % 16));
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}
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else
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{
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return -RT_ENOSYS;
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}
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return RT_EOK;
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}
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const static struct rt_pin_ops yc3121_pin_ops =
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{
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yc_pin_mode,
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yc_pin_write,
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yc_pin_read,
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yc_pin_attach_irq,
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yc_pin_detach_irq,
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yc_pin_irq_enable,
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RT_NULL,
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};
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int rt_hw_pin_init(void)
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{
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int result;
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result = rt_device_pin_register("pin", &yc3121_pin_ops, RT_NULL);
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return result;
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}
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INIT_BOARD_EXPORT(rt_hw_pin_init);
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void GPIO_IRQHandler(void)
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{
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int i;
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rt_interrupt_enter();
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for (i = 0; i < PIN_MAX_NUM; i++)
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{
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if ((GPIO_TRIG_MODE(i / 16) & (1 << (i % 16))) == (GPIO_IN(i / 16) & (1 << (i % 16))))
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{
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if (pin_irq_hdr_tab[i].hdr)
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{
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pin_irq_hdr_tab[i].hdr(pin_irq_hdr_tab[i].args);
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}
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}
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}
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rt_interrupt_leave();
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}
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