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- /*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2021-08-15 Jonas first version
- */
- #include <board.h>
- #include "drv_gpio.h"
- #ifdef RT_USING_PIN
- #define PIN_NUM(port, no) (((((port) & 0xFu) << 4) | ((no) & 0xFu)))
- #define PIN_PORT(pin) ((uint8_t)(((pin) >> 4) & 0xFu))
- #define PIN_NO(pin) ((uint8_t)((pin) & 0xFu))
- #define PIN_HKPORTSOURCE(pin) ((uint8_t)(((pin) & 0xF0u) >> 4))
- #define PIN_HKPINSOURCE(pin) ((uint8_t)((pin) & 0xFu))
- #define PIN_HKPORT(pin) ((GPIO_TypeDef *)(GPIOA_BASE + (0x400u * PIN_PORT(pin))))
- #define PIN_HKPIN(pin) ((uint16_t)(1u << PIN_NO(pin)))
- #if defined(GPIOZ)
- #define __HK32_PORT_MAX 12u
- #elif defined(GPIOK)
- #define __HK32_PORT_MAX 11u
- #elif defined(GPIOJ)
- #define __HK32_PORT_MAX 10u
- #elif defined(GPIOI)
- #define __HK32_PORT_MAX 9u
- #elif defined(GPIOH)
- #define __HK32_PORT_MAX 8u
- #elif defined(GPIOG)
- #define __HK32_PORT_MAX 7u
- #elif defined(GPIOF)
- #define __HK32_PORT_MAX 6u
- #elif defined(GPIOE)
- #define __HK32_PORT_MAX 5u
- #elif defined(GPIOD)
- #define __HK32_PORT_MAX 4u
- #elif defined(GPIOC)
- #define __HK32_PORT_MAX 3u
- #elif defined(GPIOB)
- #define __HK32_PORT_MAX 2u
- #elif defined(GPIOA)
- #define __HK32_PORT_MAX 1u
- #else
- #define __HK32_PORT_MAX 0u
- #error Unsupported HK32 GPIO peripheral.
- #endif
- #define PIN_HKPORT_MAX __HK32_PORT_MAX
- static const struct pin_irq_map pin_irq_map[] =
- {
- {GPIO_Pin_0, EXTI_Line0, EXTI0_1_IRQn},
- {GPIO_Pin_1, EXTI_Line1, EXTI0_1_IRQn},
- {GPIO_Pin_2, EXTI_Line2, EXTI2_3_IRQn},
- {GPIO_Pin_3, EXTI_Line3, EXTI2_3_IRQn},
- {GPIO_Pin_4, EXTI_Line4, EXTI4_15_IRQn},
- {GPIO_Pin_5, EXTI_Line5, EXTI4_15_IRQn},
- {GPIO_Pin_6, EXTI_Line6, EXTI4_15_IRQn},
- {GPIO_Pin_7, EXTI_Line7, EXTI4_15_IRQn},
- {GPIO_Pin_8, EXTI_Line8, EXTI4_15_IRQn},
- {GPIO_Pin_9, EXTI_Line9, EXTI4_15_IRQn},
- {GPIO_Pin_10, EXTI_Line10, EXTI4_15_IRQn},
- {GPIO_Pin_11, EXTI_Line11, EXTI4_15_IRQn},
- {GPIO_Pin_12, EXTI_Line12, EXTI4_15_IRQn},
- {GPIO_Pin_13, EXTI_Line13, EXTI4_15_IRQn},
- {GPIO_Pin_14, EXTI_Line14, EXTI4_15_IRQn},
- {GPIO_Pin_15, EXTI_Line15, EXTI4_15_IRQn},
- };
- static struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
- {
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- {-1, 0, RT_NULL, RT_NULL},
- };
- static uint32_t pin_irq_enable_mask = 0;
- #define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
- static void hk32_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value)
- {
- GPIO_TypeDef *gpio_port;
- uint16_t gpio_pin;
- if (PIN_PORT(pin) < PIN_HKPORT_MAX)
- {
- gpio_port = PIN_HKPORT(pin);
- gpio_pin = PIN_HKPIN(pin);
- GPIO_WriteBit(gpio_port, gpio_pin, (BitAction)value);
- }
- }
- static rt_int8_t hk32_pin_read(rt_device_t dev, rt_base_t pin)
- {
- GPIO_TypeDef *gpio_port;
- uint16_t gpio_pin;
- rt_int8_t value;
- value = PIN_LOW;
- if (PIN_PORT(pin) < PIN_HKPORT_MAX)
- {
- gpio_port = PIN_HKPORT(pin);
- gpio_pin = PIN_HKPIN(pin);
- value = GPIO_ReadInputDataBit(gpio_port, gpio_pin);
- }
- return value;
- }
- static void hk32_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode)
- {
- GPIO_InitTypeDef GPIO_InitStruct;
- GPIO_TypeDef *gpio_port;
- uint16_t gpio_pin;
- if (PIN_PORT(pin) < PIN_HKPORT_MAX)
- {
- gpio_port = PIN_HKPORT(pin);
- gpio_pin = PIN_HKPIN(pin);
- }
- else
- {
- return;
- }
- /* Configure GPIO_InitStructure */
- GPIO_StructInit(&GPIO_InitStruct);
- GPIO_InitStruct.GPIO_Pin = gpio_pin;
- GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
- GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
- GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
- GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
- if (mode == PIN_MODE_OUTPUT)
- {
- /* output setting */
- GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
- }
- else if (mode == PIN_MODE_INPUT)
- {
- /* input setting: not pull. */
- GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
- }
- else if (mode == PIN_MODE_INPUT_PULLUP)
- {
- /* input setting: pull up. */
- GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
- GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
- }
- else if (mode == PIN_MODE_INPUT_PULLDOWN)
- {
- /* input setting: pull down. */
- GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
- GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
- }
- else if (mode == PIN_MODE_OUTPUT_OD)
- {
- /* output setting: od. */
- GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;
- }
- GPIO_Init(gpio_port, &GPIO_InitStruct);
- }
- rt_inline rt_int32_t bit2bitno(rt_uint32_t bit)
- {
- int i;
- for (i = 0; i < 32; i++)
- {
- if ((0x01 << i) == bit)
- {
- return i;
- }
- }
- return -1;
- }
- rt_inline const struct pin_irq_map *get_pin_irq_map(uint32_t pinbit)
- {
- rt_int32_t mapindex = bit2bitno(pinbit);
- if (mapindex < 0 || mapindex >= ITEM_NUM(pin_irq_map))
- {
- return RT_NULL;
- }
- return &pin_irq_map[mapindex];
- };
- static rt_err_t hk32_pin_attach_irq(struct rt_device *device, rt_base_t pin,
- rt_uint8_t mode, void (*hdr)(void *args), void *args)
- {
- rt_base_t level;
- rt_int32_t irqindex = -1;
- uint16_t gpio_pin;
- if (PIN_PORT(pin) < PIN_HKPORT_MAX)
- {
- gpio_pin = PIN_HKPIN(pin);
- }
- else
- {
- return -RT_ENOSYS;
- }
- irqindex = bit2bitno(gpio_pin);
- if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
- {
- return -RT_ENOSYS;
- }
- level = rt_hw_interrupt_disable();
- if (pin_irq_hdr_tab[irqindex].pin == pin &&
- pin_irq_hdr_tab[irqindex].hdr == hdr &&
- pin_irq_hdr_tab[irqindex].mode == mode &&
- pin_irq_hdr_tab[irqindex].args == args)
- {
- rt_hw_interrupt_enable(level);
- return RT_EOK;
- }
- if (pin_irq_hdr_tab[irqindex].pin != -1)
- {
- rt_hw_interrupt_enable(level);
- return -RT_EBUSY;
- }
- pin_irq_hdr_tab[irqindex].pin = pin;
- pin_irq_hdr_tab[irqindex].hdr = hdr;
- pin_irq_hdr_tab[irqindex].mode = mode;
- pin_irq_hdr_tab[irqindex].args = args;
- rt_hw_interrupt_enable(level);
- return RT_EOK;
- }
- static rt_err_t hk32_pin_dettach_irq(struct rt_device *device, rt_base_t pin)
- {
- rt_base_t level;
- rt_int32_t irqindex = -1;
- uint16_t gpio_pin;
- if (PIN_PORT(pin) < PIN_HKPORT_MAX)
- {
- gpio_pin = PIN_HKPIN(pin);
- }
- else
- {
- return -RT_ENOSYS;
- }
- irqindex = bit2bitno(gpio_pin);
- if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
- {
- return -RT_ENOSYS;
- }
- level = rt_hw_interrupt_disable();
- if (pin_irq_hdr_tab[irqindex].pin == -1)
- {
- rt_hw_interrupt_enable(level);
- return RT_EOK;
- }
- pin_irq_hdr_tab[irqindex].pin = -1;
- pin_irq_hdr_tab[irqindex].hdr = RT_NULL;
- pin_irq_hdr_tab[irqindex].mode = 0;
- pin_irq_hdr_tab[irqindex].args = RT_NULL;
- rt_hw_interrupt_enable(level);
- return RT_EOK;
- }
- static rt_err_t hk32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
- rt_uint8_t enabled)
- {
- GPIO_InitTypeDef GPIO_InitStruct;
- EXTI_InitTypeDef EXTI_InitStruct;
- NVIC_InitTypeDef NVIC_InitStruct;
- const struct pin_irq_map *irqmap;
- rt_base_t level;
- rt_int32_t irqindex = -1;
- GPIO_TypeDef *gpio_port;
- uint16_t gpio_pin;
- if (PIN_PORT(pin) < PIN_HKPORT_MAX)
- {
- gpio_port = PIN_HKPORT(pin);
- gpio_pin = PIN_HKPIN(pin);
- }
- else
- {
- return -RT_ENOSYS;
- }
- if (enabled == PIN_IRQ_ENABLE)
- {
- irqindex = bit2bitno(gpio_pin);
- if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
- {
- return -RT_ENOSYS;
- }
- level = rt_hw_interrupt_disable();
- if (pin_irq_hdr_tab[irqindex].pin == -1)
- {
- rt_hw_interrupt_enable(level);
- return -RT_ENOSYS;
- }
- irqmap = &pin_irq_map[irqindex];
- /* Configure GPIO_InitStructure */
- GPIO_StructInit(&GPIO_InitStruct);
- EXTI_StructInit(&EXTI_InitStruct);
- GPIO_InitStruct.GPIO_Pin = irqmap->pinbit;
- GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
- EXTI_InitStruct.EXTI_Line = irqmap->pinbit;
- EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
- EXTI_InitStruct.EXTI_LineCmd = ENABLE;
- switch (pin_irq_hdr_tab[irqindex].mode)
- {
- case PIN_IRQ_MODE_RISING:
- GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
- EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising;
- break;
- case PIN_IRQ_MODE_FALLING:
- GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
- EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
- break;
- case PIN_IRQ_MODE_RISING_FALLING:
- EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
- break;
- }
- GPIO_Init(gpio_port, &GPIO_InitStruct);
- SYSCFG_EXTILineConfig(PIN_HKPORTSOURCE(pin), PIN_HKPINSOURCE(pin));
- EXTI_Init(&EXTI_InitStruct);
- NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
- NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
- NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
- NVIC_Init(&NVIC_InitStruct);
- pin_irq_enable_mask |= irqmap->pinbit;
- rt_hw_interrupt_enable(level);
- }
- else if (enabled == PIN_IRQ_DISABLE)
- {
- irqmap = get_pin_irq_map(gpio_pin);
- if (irqmap == RT_NULL)
- {
- return -RT_ENOSYS;
- }
- level = rt_hw_interrupt_disable();
- pin_irq_enable_mask &= ~irqmap->pinbit;
- NVIC_InitStruct.NVIC_IRQChannelCmd = DISABLE;
- NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
- if ((irqmap->pinbit >= GPIO_Pin_0) && (irqmap->pinbit <= GPIO_Pin_1))
- {
- if (!(pin_irq_enable_mask & (GPIO_Pin_0 | GPIO_Pin_1)))
- {
- NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
- }
- }
- else if ((irqmap->pinbit >= GPIO_Pin_2) && \
- (irqmap->pinbit <= GPIO_Pin_3))
- {
- if (!(pin_irq_enable_mask & (GPIO_Pin_2 | GPIO_Pin_3)))
- {
- NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
- }
- }
- else if ((irqmap->pinbit >= GPIO_Pin_4) && \
- (irqmap->pinbit <= GPIO_Pin_15))
- {
- if (!(pin_irq_enable_mask & (GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | \
- GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | \
- GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | \
- GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15)))
- {
- NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
- }
- }
- else
- {
- NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
- }
- NVIC_Init(&NVIC_InitStruct);
- rt_hw_interrupt_enable(level);
- }
- else
- {
- return -RT_ENOSYS;
- }
- return RT_EOK;
- }
- const static struct rt_pin_ops _hk32_pin_ops =
- {
- hk32_pin_mode,
- hk32_pin_write,
- hk32_pin_read,
- hk32_pin_attach_irq,
- hk32_pin_dettach_irq,
- hk32_pin_irq_enable,
- RT_NULL,
- };
- rt_inline void pin_irq_hdr(int irqno)
- {
- EXTI_ClearITPendingBit(pin_irq_map[irqno].lineno);
- if (pin_irq_hdr_tab[irqno].hdr)
- {
- pin_irq_hdr_tab[irqno].hdr(pin_irq_hdr_tab[irqno].args);
- }
- }
- void GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
- {
- pin_irq_hdr(bit2bitno(GPIO_Pin));
- }
- void EXTI0_1_IRQHandler(void)
- {
- rt_interrupt_enter();
- if (RESET != EXTI_GetITStatus(EXTI_Line0))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_0);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line1))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_1);
- }
- rt_interrupt_leave();
- }
- void EXTI2_3_IRQHandler(void)
- {
- rt_interrupt_enter();
- if (RESET != EXTI_GetITStatus(EXTI_Line2))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_2);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line3))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_3);
- }
- rt_interrupt_leave();
- }
- void EXTI4_15_IRQHandler(void)
- {
- rt_interrupt_enter();
- if (RESET != EXTI_GetITStatus(EXTI_Line4))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_4);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line5))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_5);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line6))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_6);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line7))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_7);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line8))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_8);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line9))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_9);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line10))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_10);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line11))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_11);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line12))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_12);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line13))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_13);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line14))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_14);
- }
- if (RESET != EXTI_GetITStatus(EXTI_Line15))
- {
- GPIO_EXTI_IRQHandler(GPIO_Pin_15);
- }
- rt_interrupt_leave();
- }
- int rt_hw_pin_init(void)
- {
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
- #ifdef GPIOA
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
- #endif
- #ifdef GPIOB
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
- #endif
- #ifdef GPIOC
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
- #endif
- #ifdef GPIOD
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
- #endif
- #ifdef GPIOE
- RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOE, ENABLE);
- #endif
- #ifdef GPIOF
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
- #endif
- #ifdef GPIOG
- RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOG, ENABLE);
- #endif
- return rt_device_pin_register("pin", &_hk32_pin_ops, RT_NULL);
- }
- INIT_BOARD_EXPORT(rt_hw_pin_init);
- #endif /* RT_USING_PIN */
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