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rt-thread-official/bsp/swm320/drivers/drv_gpio.c

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/*
* Copyright (c) 2006-2018, Synwit Technology Co.,Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-05-31 ZYH first version
* 2018-12-10 Zohar_Lee fix bug
* 2020-07-10 lik rewrite
*/
#include "drv_gpio.h"
#ifdef RT_USING_PIN
#ifdef BSP_USING_GPIO
static const struct swm_pin_index pins[] =
{
__SWM_PIN(0, A, 0),
__SWM_PIN(1, A, 1),
__SWM_PIN(2, A, 2),
__SWM_PIN(3, A, 3),
__SWM_PIN(4, A, 4),
__SWM_PIN(5, A, 5),
__SWM_PIN(6, A, 6),
__SWM_PIN(7, A, 7),
__SWM_PIN(8, A, 8),
__SWM_PIN(9, A, 9),
__SWM_PIN(10, A, 10),
__SWM_PIN(11, A, 11),
__SWM_PIN(12, A, 12),
__SWM_PIN(13, B, 0),
__SWM_PIN(14, B, 1),
__SWM_PIN(15, B, 2),
__SWM_PIN(16, B, 3),
__SWM_PIN(17, B, 4),
__SWM_PIN(18, B, 5),
__SWM_PIN(19, B, 6),
__SWM_PIN(20, B, 7),
__SWM_PIN(21, B, 8),
__SWM_PIN(22, B, 9),
__SWM_PIN(23, B, 10),
__SWM_PIN(24, B, 11),
__SWM_PIN(25, B, 12),
__SWM_PIN(26, C, 0),
__SWM_PIN(27, C, 1),
__SWM_PIN(28, C, 2),
__SWM_PIN(29, C, 3),
__SWM_PIN(30, C, 4),
__SWM_PIN(31, C, 5),
__SWM_PIN(32, C, 6),
__SWM_PIN(33, C, 7),
__SWM_PIN(34, M, 0),
__SWM_PIN(35, M, 1),
__SWM_PIN(36, M, 2),
__SWM_PIN(37, M, 3),
__SWM_PIN(38, M, 4),
__SWM_PIN(39, M, 5),
__SWM_PIN(40, M, 6),
__SWM_PIN(41, M, 7),
__SWM_PIN(42, M, 8),
__SWM_PIN(43, M, 9),
__SWM_PIN(44, M, 10),
__SWM_PIN(45, M, 11),
__SWM_PIN(46, M, 12),
__SWM_PIN(47, M, 13),
__SWM_PIN(48, M, 14),
__SWM_PIN(49, M, 15),
__SWM_PIN(50, M, 16),
__SWM_PIN(51, M, 17),
__SWM_PIN(52, M, 18),
__SWM_PIN(53, M, 19),
__SWM_PIN(54, M, 20),
__SWM_PIN(55, M, 21),
__SWM_PIN(56, N, 0),
__SWM_PIN(57, N, 1),
__SWM_PIN(58, N, 2),
__SWM_PIN(59, N, 3),
__SWM_PIN(60, N, 4),
__SWM_PIN(61, N, 5),
__SWM_PIN(62, N, 6),
__SWM_PIN(63, N, 7),
__SWM_PIN(64, N, 8),
__SWM_PIN(65, N, 9),
__SWM_PIN(66, N, 10),
__SWM_PIN(67, N, 11),
__SWM_PIN(68, N, 12),
__SWM_PIN(69, N, 13),
__SWM_PIN(70, N, 14),
__SWM_PIN(71, N, 15),
__SWM_PIN(72, N, 16),
__SWM_PIN(73, N, 17),
__SWM_PIN(74, N, 18),
__SWM_PIN(75, N, 19),
__SWM_PIN(76, P, 0),
__SWM_PIN(77, P, 1),
__SWM_PIN(78, P, 2),
__SWM_PIN(79, P, 3),
__SWM_PIN(80, P, 4),
__SWM_PIN(81, P, 5),
__SWM_PIN(82, P, 6),
__SWM_PIN(83, P, 7),
__SWM_PIN(84, P, 8),
__SWM_PIN(85, P, 9),
__SWM_PIN(86, P, 10),
__SWM_PIN(87, P, 11),
__SWM_PIN(88, P, 12),
__SWM_PIN(89, P, 13),
__SWM_PIN(90, P, 14),
__SWM_PIN(91, P, 15),
__SWM_PIN(92, P, 16),
__SWM_PIN(93, P, 17),
__SWM_PIN(94, P, 18),
__SWM_PIN(95, P, 19),
__SWM_PIN(96, P, 20),
__SWM_PIN(97, P, 21),
__SWM_PIN(98, P, 22),
__SWM_PIN(99, P, 23)};
static struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
{
{0, 0, RT_NULL, RT_NULL},
{1, 0, RT_NULL, RT_NULL},
{2, 0, RT_NULL, RT_NULL},
{3, 0, RT_NULL, RT_NULL},
{4, 0, RT_NULL, RT_NULL},
{5, 0, RT_NULL, RT_NULL},
{6, 0, RT_NULL, RT_NULL},
{7, 0, RT_NULL, RT_NULL},
{8, 0, RT_NULL, RT_NULL},
{9, 0, RT_NULL, RT_NULL},
{10, 0, RT_NULL, RT_NULL},
{11, 0, RT_NULL, RT_NULL},
{12, 0, RT_NULL, RT_NULL},
{13, 0, RT_NULL, RT_NULL},
{14, 0, RT_NULL, RT_NULL},
{15, 0, RT_NULL, RT_NULL},
{16, 0, RT_NULL, RT_NULL},
{17, 0, RT_NULL, RT_NULL},
{18, 0, RT_NULL, RT_NULL},
{19, 0, RT_NULL, RT_NULL},
{20, 0, RT_NULL, RT_NULL},
{21, 0, RT_NULL, RT_NULL},
{22, 0, RT_NULL, RT_NULL},
{23, 0, RT_NULL, RT_NULL},
{24, 0, RT_NULL, RT_NULL},
{25, 0, RT_NULL, RT_NULL},
{26, 0, RT_NULL, RT_NULL},
{27, 0, RT_NULL, RT_NULL},
{28, 0, RT_NULL, RT_NULL},
{29, 0, RT_NULL, RT_NULL},
{30, 0, RT_NULL, RT_NULL},
{31, 0, RT_NULL, RT_NULL},
{32, 0, RT_NULL, RT_NULL},
{33, 0, RT_NULL, RT_NULL},
{34, 0, RT_NULL, RT_NULL},
{35, 0, RT_NULL, RT_NULL},
{36, 0, RT_NULL, RT_NULL},
{37, 0, RT_NULL, RT_NULL},
{38, 0, RT_NULL, RT_NULL},
{39, 0, RT_NULL, RT_NULL},
{40, 0, RT_NULL, RT_NULL},
{41, 0, RT_NULL, RT_NULL},
{42, 0, RT_NULL, RT_NULL},
{43, 0, RT_NULL, RT_NULL},
{44, 0, RT_NULL, RT_NULL},
{45, 0, RT_NULL, RT_NULL},
{46, 0, RT_NULL, RT_NULL},
{47, 0, RT_NULL, RT_NULL},
{48, 0, RT_NULL, RT_NULL},
{49, 0, RT_NULL, RT_NULL},
{50, 0, RT_NULL, RT_NULL},
{51, 0, RT_NULL, RT_NULL},
{52, 0, RT_NULL, RT_NULL},
{53, 0, RT_NULL, RT_NULL},
{54, 0, RT_NULL, RT_NULL},
{55, 0, RT_NULL, RT_NULL},
{56, 0, RT_NULL, RT_NULL},
{57, 0, RT_NULL, RT_NULL},
{58, 0, RT_NULL, RT_NULL},
{59, 0, RT_NULL, RT_NULL},
{60, 0, RT_NULL, RT_NULL},
{61, 0, RT_NULL, RT_NULL},
{62, 0, RT_NULL, RT_NULL},
{63, 0, RT_NULL, RT_NULL},
{64, 0, RT_NULL, RT_NULL},
{65, 0, RT_NULL, RT_NULL},
{66, 0, RT_NULL, RT_NULL},
{67, 0, RT_NULL, RT_NULL},
{68, 0, RT_NULL, RT_NULL},
{69, 0, RT_NULL, RT_NULL},
{70, 0, RT_NULL, RT_NULL},
{71, 0, RT_NULL, RT_NULL},
{72, 0, RT_NULL, RT_NULL},
{73, 0, RT_NULL, RT_NULL},
{74, 0, RT_NULL, RT_NULL},
{75, 0, RT_NULL, RT_NULL},
{76, 0, RT_NULL, RT_NULL},
{77, 0, RT_NULL, RT_NULL},
{78, 0, RT_NULL, RT_NULL},
{79, 0, RT_NULL, RT_NULL},
{80, 0, RT_NULL, RT_NULL},
{81, 0, RT_NULL, RT_NULL},
{82, 0, RT_NULL, RT_NULL},
{83, 0, RT_NULL, RT_NULL},
{84, 0, RT_NULL, RT_NULL},
{85, 0, RT_NULL, RT_NULL},
{86, 0, RT_NULL, RT_NULL},
{87, 0, RT_NULL, RT_NULL},
{88, 0, RT_NULL, RT_NULL},
{89, 0, RT_NULL, RT_NULL},
{90, 0, RT_NULL, RT_NULL},
{91, 0, RT_NULL, RT_NULL},
{92, 0, RT_NULL, RT_NULL},
{93, 0, RT_NULL, RT_NULL},
{94, 0, RT_NULL, RT_NULL},
{95, 0, RT_NULL, RT_NULL},
{96, 0, RT_NULL, RT_NULL},
{97, 0, RT_NULL, RT_NULL},
{98, 0, RT_NULL, RT_NULL},
{99, 0, RT_NULL, RT_NULL}};
#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
static const struct swm_pin_index *get_pin(uint8_t pin)
{
const struct swm_pin_index *index;
if (pin < ITEM_NUM(pins))
{
index = &pins[pin];
if (index->gpio == GPIO0)
index = RT_NULL;
}
else
{
index = RT_NULL;
}
return index;
}
static void swm_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value)
{
const struct swm_pin_index *index;
index = get_pin(pin);
if (index == RT_NULL)
{
return;
}
if (value)
{
GPIO_SetBit(index->gpio, index->pin);
}
else
{
GPIO_ClrBit(index->gpio, index->pin);
}
}
static int swm_pin_read(rt_device_t dev, rt_base_t pin)
{
const struct swm_pin_index *index;
index = get_pin(pin);
if (index == RT_NULL)
{
return PIN_LOW;
}
return (int)GPIO_GetBit(index->gpio, index->pin);
}
static void swm_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
{
const struct swm_pin_index *index;
int dir = 0;
int pull_up = 0;
int pull_down = 0;
index = get_pin(pin);
if (index == RT_NULL)
{
return;
}
/* Configure GPIO_InitStructure */
switch (mode)
{
case PIN_MODE_OUTPUT:
/* output setting */
dir = 1;
break;
case PIN_MODE_INPUT:
/* input setting: not pull. */
dir = 0;
break;
case PIN_MODE_INPUT_PULLUP:
/* input setting: pull up. */
dir = 0;
pull_up = 1;
break;
case PIN_MODE_INPUT_PULLDOWN:
/* input setting: pull down. */
dir = 0;
pull_down = 1;
break;
case PIN_MODE_OUTPUT_OD:
/* output setting: od. */
dir = 1;
pull_up = 1;
break;
}
GPIO_Init(index->gpio, index->pin, dir, pull_up, pull_down);
}
static rt_err_t swm_pin_attach_irq(struct rt_device *device,
rt_int32_t pin,
rt_uint32_t mode,
void (*hdr)(void *args),
void *args)
{
const struct swm_pin_index *index;
rt_base_t level;
index = get_pin(pin);
if (index == RT_NULL)
{
return RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[pin].pin == pin &&
pin_irq_hdr_tab[pin].mode == mode &&
pin_irq_hdr_tab[pin].hdr == hdr &&
pin_irq_hdr_tab[pin].args == args)
{
rt_hw_interrupt_enable(level);
return RT_EOK;
}
pin_irq_hdr_tab[pin].pin = pin;
pin_irq_hdr_tab[pin].mode = mode;
pin_irq_hdr_tab[pin].hdr = hdr;
pin_irq_hdr_tab[pin].args = args;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t swm_pin_detach_irq(struct rt_device *device, rt_int32_t pin)
{
const struct swm_pin_index *index;
rt_base_t level;
index = get_pin(pin);
if (index == RT_NULL)
{
return RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
pin_irq_hdr_tab[pin].mode = 0;
pin_irq_hdr_tab[pin].hdr = RT_NULL;
pin_irq_hdr_tab[pin].args = RT_NULL;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t swm_pin_irq_enable(struct rt_device *device,
rt_base_t pin,
rt_uint32_t enabled)
{
const struct swm_pin_index *index;
rt_base_t level = 0;
index = get_pin(pin);
if (index == RT_NULL)
{
return RT_ENOSYS;
}
if (enabled == PIN_IRQ_ENABLE)
{
switch (pin_irq_hdr_tab[pin].mode)
{
case PIN_IRQ_MODE_RISING:
GPIO_Init(index->gpio, index->pin, 0, 0, 1);
EXTI_Init(index->gpio, index->pin, EXTI_RISE_EDGE);
break;
case PIN_IRQ_MODE_FALLING:
GPIO_Init(index->gpio, index->pin, 0, 1, 0);
EXTI_Init(index->gpio, index->pin, EXTI_FALL_EDGE);
break;
case PIN_IRQ_MODE_RISING_FALLING:
GPIO_Init(index->gpio, index->pin, 0, 1, 1);
EXTI_Init(index->gpio, index->pin, EXTI_BOTH_EDGE);
break;
case PIN_IRQ_MODE_HIGH_LEVEL:
GPIO_Init(index->gpio, index->pin, 0, 0, 1);
EXTI_Init(index->gpio, index->pin, EXTI_HIGH_LEVEL);
break;
case PIN_IRQ_MODE_LOW_LEVEL:
GPIO_Init(index->gpio, index->pin, 0, 1, 0);
EXTI_Init(index->gpio, index->pin, EXTI_LOW_LEVEL);
break;
default:
return RT_EINVAL;
}
level = rt_hw_interrupt_disable();
NVIC_EnableIRQ(index->irq);
EXTI_Open(index->gpio, index->pin);
rt_hw_interrupt_enable(level);
}
else if (enabled == PIN_IRQ_DISABLE)
{
level = rt_hw_interrupt_disable();
NVIC_DisableIRQ(index->irq);
EXTI_Close(index->gpio, index->pin);
rt_hw_interrupt_enable(level);
}
else
{
return -RT_ENOSYS;
}
return RT_EOK;
}
const static struct rt_pin_ops swm_pin_ops =
{
.pin_mode = swm_pin_mode,
.pin_write = swm_pin_write,
.pin_read = swm_pin_read,
.pin_attach_irq = swm_pin_attach_irq,
.pin_detach_irq = swm_pin_detach_irq,
.pin_irq_enable = swm_pin_irq_enable};
static void rt_hw_pin_isr(GPIO_TypeDef *GPIOx)
{
static int gpio[24];
int index = 0;
static int init = 0;
const struct swm_pin_index *pin;
if (init == 0)
{
init = 1;
for (pin = &pins[0];
pin->index < ITEM_NUM(pins);
pin++)
{
if (pin->gpio == GPIOx)
{
gpio[index] = pin->index;
index++;
RT_ASSERT(index <= 24)
}
}
}
for (index = 0; index < 24; index++)
{
pin = get_pin(gpio[index]);
if (EXTI_State(pin->gpio, pin->pin))
{
EXTI_Clear(pin->gpio, pin->pin);
if (pin_irq_hdr_tab[pin->index].hdr)
{
pin_irq_hdr_tab[pin->index].hdr(pin_irq_hdr_tab[pin->index].args);
}
}
}
}
void GPIOA_Handler(void)
{
rt_interrupt_enter();
rt_hw_pin_isr(GPIOA);
rt_interrupt_leave();
}
void GPIOB_Handler(void)
{
rt_interrupt_enter();
rt_hw_pin_isr(GPIOB);
rt_interrupt_leave();
}
void GPIOC_Handler(void)
{
rt_interrupt_enter();
rt_hw_pin_isr(GPIOC);
rt_interrupt_leave();
}
void GPIOM_Handler(void)
{
rt_interrupt_enter();
rt_hw_pin_isr(GPIOM);
rt_interrupt_leave();
}
void GPION_Handler(void)
{
rt_interrupt_enter();
rt_hw_pin_isr(GPION);
rt_interrupt_leave();
}
void GPIOP_Handler(void)
{
rt_interrupt_enter();
rt_hw_pin_isr(GPIOP);
rt_interrupt_leave();
}
int rt_hw_pin_init(void)
{
return rt_device_pin_register("pin", &swm_pin_ops, RT_NULL);
}
INIT_BOARD_EXPORT(rt_hw_pin_init);
#endif /* BSP_USING_GPIO */
#endif /* RT_USING_PIN */
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