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- /*
- * Copyright (C) 2020, Huada Semiconductor Co., Ltd.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2020-10-30 CDT first version
- */
- #include <rtthread.h>
- #include "rthw.h"
- #ifdef RT_USING_PIN
- #include "drv_gpio.h"
- #include "drv_irq.h"
- #define GPIO_PIN_INDEX(pin) ((uint8_t)((pin) & 0x0F))
- #define GPIO_PORT(pin) ((uint8_t)(((pin) >> 4) & 0x0F))
- #define GPIO_PIN(pin) ((uint16_t)(0x01U << GPIO_PIN_INDEX(pin)))
- #define PIN_NUM(port, pin) (((((port) & 0x0F) << 4) | ((pin) & 0x0F)))
- #define PIN_MAX_NUM ((GPIO_PORT_I * 16) + (__CLZ(__RBIT(GPIO_PIN_13))) + 1)
- #define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
- static void exint0_irq_handler(void);
- static void exint1_irq_handler(void);
- static void exint2_irq_handler(void);
- static void exint3_irq_handler(void);
- static void exint4_irq_handler(void);
- static void exint5_irq_handler(void);
- static void exint6_irq_handler(void);
- static void exint7_irq_handler(void);
- static void exint8_irq_handler(void);
- static void exint9_irq_handler(void);
- static void exint10_irq_handler(void);
- static void exint11_irq_handler(void);
- static void exint12_irq_handler(void);
- static void exint13_irq_handler(void);
- static void exint14_irq_handler(void);
- static void exint15_irq_handler(void);
- struct hc32_pin_irq_map
- {
- rt_uint16_t pinbit;
- struct hc32_irq_config irq_config;
- func_ptr_t irq_callback;
- };
- #ifndef HC32_PIN_CONFIG
- #define HC32_PIN_CONFIG(pin, irq, src, irq_info) \
- { \
- .pinbit = pin, \
- .irq_callback = irq, \
- .irq_config = irq_info, \
- .irq_config.int_src = src, \
- }
- #endif /* HC32_PIN_CONFIG */
- static struct hc32_pin_irq_map pin_irq_map[] =
- {
- HC32_PIN_CONFIG(GPIO_PIN_00, exint0_irq_handler, INT_PORT_EIRQ0, EXINT0_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_01, exint1_irq_handler, INT_PORT_EIRQ1, EXINT1_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_02, exint2_irq_handler, INT_PORT_EIRQ2, EXINT2_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_03, exint3_irq_handler, INT_PORT_EIRQ3, EXINT3_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_04, exint4_irq_handler, INT_PORT_EIRQ4, EXINT4_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_05, exint5_irq_handler, INT_PORT_EIRQ5, EXINT5_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_06, exint6_irq_handler, INT_PORT_EIRQ6, EXINT6_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_07, exint7_irq_handler, INT_PORT_EIRQ7, EXINT7_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_08, exint8_irq_handler, INT_PORT_EIRQ8, EXINT8_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_09, exint9_irq_handler, INT_PORT_EIRQ9, EXINT9_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_10, exint10_irq_handler, INT_PORT_EIRQ10, EXINT10_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_11, exint11_irq_handler, INT_PORT_EIRQ11, EXINT11_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_12, exint12_irq_handler, INT_PORT_EIRQ12, EXINT12_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_13, exint13_irq_handler, INT_PORT_EIRQ13, EXINT13_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_14, exint14_irq_handler, INT_PORT_EIRQ14, EXINT14_IRQ_CONFIG),
- HC32_PIN_CONFIG(GPIO_PIN_15, exint15_irq_handler, INT_PORT_EIRQ15, EXINT15_IRQ_CONFIG),
- };
- 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 void pin_irq_handler(rt_uint16_t pinbit)
- {
- rt_int32_t irqindex = -1;
- if (Set == EXINT_GetExIntSrc(pinbit))
- {
- EXINT_ClrExIntSrc(pinbit);
- irqindex = __CLZ(__RBIT(pinbit));
- if (pin_irq_hdr_tab[irqindex].hdr)
- {
- pin_irq_hdr_tab[irqindex].hdr(pin_irq_hdr_tab[irqindex].args);
- }
- }
- }
- static void exint0_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[0].pinbit);
- rt_interrupt_leave();
- }
- static void exint1_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[1].pinbit);
- rt_interrupt_leave();
- }
- static void exint2_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[2].pinbit);
- rt_interrupt_leave();
- }
- static void exint3_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[3].pinbit);
- rt_interrupt_leave();
- }
- static void exint4_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[4].pinbit);
- rt_interrupt_leave();
- }
- static void exint5_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[5].pinbit);
- rt_interrupt_leave();
- }
- static void exint6_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[6].pinbit);
- rt_interrupt_leave();
- }
- static void exint7_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[7].pinbit);
- rt_interrupt_leave();
- }
- static void exint8_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[8].pinbit);
- rt_interrupt_leave();
- }
- static void exint9_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[9].pinbit);
- rt_interrupt_leave();
- }
- static void exint10_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[10].pinbit);
- rt_interrupt_leave();
- }
- static void exint11_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[11].pinbit);
- rt_interrupt_leave();
- }
- static void exint12_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[12].pinbit);
- rt_interrupt_leave();
- }
- static void exint13_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[13].pinbit);
- rt_interrupt_leave();
- }
- static void exint14_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[14].pinbit);
- rt_interrupt_leave();
- }
- static void exint15_irq_handler(void)
- {
- rt_interrupt_enter();
- pin_irq_handler(pin_irq_map[15].pinbit);
- rt_interrupt_leave();
- }
- static void hc32_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value)
- {
- uint8_t gpio_port;
- uint16_t gpio_pin;
- if (pin < PIN_MAX_NUM)
- {
- gpio_port = GPIO_PORT(pin);
- gpio_pin = GPIO_PIN(pin);
- if (PIN_LOW == value)
- {
- GPIO_ResetPins(gpio_port, gpio_pin);
- }
- else
- {
- GPIO_SetPins(gpio_port, gpio_pin);
- }
- }
- }
- static int hc32_pin_read(rt_device_t dev, rt_base_t pin)
- {
- uint8_t gpio_port;
- uint16_t gpio_pin;
- int value = PIN_LOW;
- if (pin < PIN_MAX_NUM)
- {
- gpio_port = GPIO_PORT(pin);
- gpio_pin = GPIO_PIN(pin);
- if (Pin_Reset == GPIO_ReadInputPins(gpio_port, gpio_pin))
- {
- value = PIN_LOW;
- }
- else
- {
- value = PIN_HIGH;
- }
- }
- return value;
- }
- static void hc32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
- {
- uint8_t gpio_port;
- uint16_t gpio_pin;
- stc_gpio_init_t stcGpioInit;
- if (pin >= PIN_MAX_NUM)
- {
- return;
- }
- GPIO_StructInit(&stcGpioInit);
- switch (mode)
- {
- case PIN_MODE_OUTPUT:
- stcGpioInit.u16PinDir = PIN_DIR_OUT;
- stcGpioInit.u16PinOType = PIN_OTYPE_CMOS;
- break;
- case PIN_MODE_INPUT:
- stcGpioInit.u16PinDir = PIN_DIR_IN;
- break;
- case PIN_MODE_INPUT_PULLUP:
- stcGpioInit.u16PinDir = PIN_DIR_IN;
- stcGpioInit.u16PullUp = PIN_PU_ON;
- break;
- case PIN_MODE_INPUT_PULLDOWN:
- stcGpioInit.u16PinDir = PIN_DIR_IN;
- stcGpioInit.u16PullUp = PIN_PU_OFF;
- break;
- case PIN_MODE_OUTPUT_OD:
- stcGpioInit.u16PinDir = PIN_DIR_OUT;
- stcGpioInit.u16PinOType = PIN_OTYPE_NMOS;
- break;
- default:
- break;
- }
- gpio_port = GPIO_PORT(pin);
- gpio_pin = GPIO_PIN(pin);
- GPIO_Init(gpio_port, gpio_pin, &stcGpioInit);
- }
- static void gpio_irq_config(uint8_t u8Port, uint16_t u16Pin, uint16_t u16ExInt)
- {
- __IO uint16_t *PCRx;
- uint16_t pin_num;
- pin_num = __CLZ(__RBIT(u16Pin));
- PCRx = (__IO uint16_t *)((uint32_t)(&M4_GPIO->PCRA0) + ((uint32_t)u8Port * 0x40UL) + (pin_num * 4UL));
- MODIFY_REG16(*PCRx, GPIO_PCR_INTE, u16ExInt);
- }
- static rt_err_t hc32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
- rt_uint32_t mode, void (*hdr)(void *args), void *args)
- {
- rt_base_t level;
- rt_int32_t irqindex = -1;
- if (pin >= PIN_MAX_NUM)
- {
- return -RT_ENOSYS;
- }
- irqindex = GPIO_PIN_INDEX(pin);
- if (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 hc32_pin_detach_irq(struct rt_device *device, rt_int32_t pin)
- {
- rt_base_t level;
- rt_int32_t irqindex = -1;
- if (pin >= PIN_MAX_NUM)
- {
- return -RT_ENOSYS;
- }
- irqindex = GPIO_PIN_INDEX(pin);
- if (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 hc32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled)
-
- {
- struct hc32_pin_irq_map *irq_map;
- rt_base_t level;
- rt_int32_t irqindex = -1;
- uint16_t gpio_pin;
- stc_exint_init_t stcExintInit;
- if ((pin >= PIN_MAX_NUM) || ((PIN_IRQ_ENABLE != enabled) && (PIN_IRQ_DISABLE != enabled)))
- {
- return -RT_ENOSYS;
- }
- irqindex = GPIO_PIN_INDEX(pin);
- if (irqindex >= ITEM_NUM(pin_irq_map))
- {
- return RT_ENOSYS;
- }
- irq_map = &pin_irq_map[irqindex];
- gpio_pin = GPIO_PIN(pin);
- if (enabled == PIN_IRQ_ENABLE)
- {
- level = rt_hw_interrupt_disable();
- if (pin_irq_hdr_tab[irqindex].pin == -1)
- {
- rt_hw_interrupt_enable(level);
- return RT_ENOSYS;
- }
- /* Exint config */
- EXINT_StructInit(&stcExintInit);
- switch (pin_irq_hdr_tab[irqindex].mode)
- {
- case PIN_IRQ_MODE_RISING:
- stcExintInit.u32ExIntLvl = EXINT_TRIGGER_RISING;
- break;
- case PIN_IRQ_MODE_FALLING:
- stcExintInit.u32ExIntLvl = EXINT_TRIGGER_FALLING;
- break;
- case PIN_IRQ_MODE_RISING_FALLING:
- stcExintInit.u32ExIntLvl = EXINT_TRIGGER_BOTH;
- break;
- case PIN_IRQ_MODE_LOW_LEVEL:
- stcExintInit.u32ExIntLvl = EXINT_TRIGGER_LOW;
- break;
- }
- stcExintInit.u32ExIntCh = gpio_pin;
- stcExintInit.u32ExIntFAE = EXINT_FILTER_A_ON;
- stcExintInit.u32ExIntFAClk = EXINT_FACLK_HCLK_DIV8;
- EXINT_Init(&stcExintInit);
- /* IRQ sign-in */
- hc32_install_irq_handler(&irq_map->irq_config, irq_map->irq_callback, RT_FALSE);
- NVIC_EnableIRQ(irq_map->irq_config.irq);
- gpio_irq_config(GPIO_PORT(pin), gpio_pin, PIN_EXINT_ON);
- rt_hw_interrupt_enable(level);
- }
- else
- {
- level = rt_hw_interrupt_disable();
- gpio_irq_config(GPIO_PORT(pin), gpio_pin, PIN_EXINT_OFF);
- NVIC_DisableIRQ(irq_map->irq_config.irq);
- rt_hw_interrupt_enable(level);
- }
- return RT_EOK;
- }
- static const struct rt_pin_ops pin_ops =
- {
- hc32_pin_mode,
- hc32_pin_write,
- hc32_pin_read,
- hc32_pin_attach_irq,
- hc32_pin_detach_irq,
- hc32_pin_irq_enable,
- };
- int rt_hw_pin_init(void)
- {
- return rt_device_pin_register("pin", &pin_ops, RT_NULL);
- }
- INIT_BOARD_EXPORT(rt_hw_pin_init);
- #endif /* RT_USING_PIN */
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