/* * Copyright (c) 2006-2022, Synwit Technology Co.,Ltd. * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-07-01 lik first version */ #include "drv_gpio.h" #ifdef RT_USING_PIN #ifdef BSP_USING_GPIO //#define DRV_DEBUG #define LOG_TAG "drv.gpio" #include #define __SWM_PIN(index, gpio, pin_index) \ { \ index, GPIO##gpio, PIN##pin_index, GPIO##gpio##_IRQn \ } struct swm_pin_device { uint32_t index; GPIO_TypeDef *gpio; uint32_t pin; IRQn_Type irq; }; static const struct swm_pin_device pin_obj[] = { __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, A, 13), __SWM_PIN(14, A, 14), __SWM_PIN(15, A, 15), __SWM_PIN(16, B, 0), __SWM_PIN(17, B, 1), __SWM_PIN(18, B, 2), __SWM_PIN(19, B, 3), __SWM_PIN(20, B, 4), __SWM_PIN(21, B, 5), __SWM_PIN(22, B, 6), __SWM_PIN(23, B, 7), __SWM_PIN(24, B, 8), __SWM_PIN(25, B, 9), __SWM_PIN(26, B, 10), __SWM_PIN(27, B, 11), __SWM_PIN(28, B, 12), __SWM_PIN(29, B, 13), __SWM_PIN(30, B, 14), __SWM_PIN(31, B, 15), __SWM_PIN(32, C, 0), __SWM_PIN(33, C, 1), __SWM_PIN(34, C, 2), __SWM_PIN(35, C, 3), __SWM_PIN(36, C, 4), __SWM_PIN(37, C, 5), __SWM_PIN(38, C, 6), __SWM_PIN(39, C, 7), __SWM_PIN(40, C, 8), __SWM_PIN(41, C, 9), __SWM_PIN(42, C, 10), __SWM_PIN(43, C, 11), __SWM_PIN(44, C, 12), __SWM_PIN(45, C, 13), __SWM_PIN(46, C, 14), __SWM_PIN(47, C, 15), __SWM_PIN(48, D, 0), __SWM_PIN(49, D, 1), __SWM_PIN(50, D, 2), __SWM_PIN(51, D, 3), __SWM_PIN(52, D, 4), __SWM_PIN(53, D, 5), __SWM_PIN(54, D, 6), __SWM_PIN(55, D, 7), __SWM_PIN(56, D, 8), __SWM_PIN(57, D, 9), __SWM_PIN(58, D, 10), __SWM_PIN(59, D, 11), __SWM_PIN(60, D, 12), __SWM_PIN(61, D, 13), __SWM_PIN(62, D, 14), __SWM_PIN(63, D, 15), __SWM_PIN(64, E, 0), __SWM_PIN(65, E, 1), __SWM_PIN(66, E, 2), __SWM_PIN(67, E, 3), __SWM_PIN(68, E, 4), __SWM_PIN(69, E, 5), __SWM_PIN(70, E, 6), __SWM_PIN(71, E, 7), __SWM_PIN(72, E, 8), __SWM_PIN(73, E, 9), __SWM_PIN(74, E, 10), __SWM_PIN(75, E, 11), __SWM_PIN(76, E, 12), __SWM_PIN(77, E, 13), __SWM_PIN(78, E, 14), __SWM_PIN(79, E, 15), __SWM_PIN(80, M, 0), __SWM_PIN(81, M, 1), __SWM_PIN(82, M, 2), __SWM_PIN(83, M, 3), __SWM_PIN(84, M, 4), __SWM_PIN(85, M, 5), __SWM_PIN(86, M, 6), __SWM_PIN(87, M, 7), __SWM_PIN(88, M, 8), __SWM_PIN(89, M, 9), __SWM_PIN(90, M, 10), __SWM_PIN(91, M, 11), __SWM_PIN(92, M, 12), __SWM_PIN(93, M, 13), __SWM_PIN(94, M, 14), __SWM_PIN(95, M, 15), __SWM_PIN(96, N, 0), __SWM_PIN(97, N, 1), __SWM_PIN(98, N, 2), __SWM_PIN(99, N, 3), __SWM_PIN(100, N, 4), __SWM_PIN(101, N, 5), __SWM_PIN(102, N, 6), __SWM_PIN(103, N, 7), __SWM_PIN(104, N, 8), __SWM_PIN(105, N, 9), __SWM_PIN(106, N, 10), __SWM_PIN(107, N, 11), __SWM_PIN(108, N, 12), __SWM_PIN(109, N, 13), __SWM_PIN(110, N, 14), __SWM_PIN(111, N, 15)}; 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}, {100, 0, RT_NULL, RT_NULL}, {101, 0, RT_NULL, RT_NULL}, {102, 0, RT_NULL, RT_NULL}, {103, 0, RT_NULL, RT_NULL}, {104, 0, RT_NULL, RT_NULL}, {105, 0, RT_NULL, RT_NULL}, {106, 0, RT_NULL, RT_NULL}, {107, 0, RT_NULL, RT_NULL}, {108, 0, RT_NULL, RT_NULL}, {109, 0, RT_NULL, RT_NULL}, {110, 0, RT_NULL, RT_NULL}, {111, 0, RT_NULL, RT_NULL}}; #define ITEM_NUM(items) sizeof(items) / sizeof(items[0]) static const struct swm_pin_device *_pin2struct(uint8_t pin) { const struct swm_pin_device *gpio_obj; if (pin < ITEM_NUM(pin_obj)) { gpio_obj = &pin_obj[pin]; } else { gpio_obj = RT_NULL; } return gpio_obj; } static void swm_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode) { const struct swm_pin_device *gpio_obj; int dir = 0; int pull_up = 0; int pull_down = 0; int open_drain = 0; gpio_obj = _pin2struct(pin); if (gpio_obj == 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; open_drain = 1; break; } GPIO_Init(gpio_obj->gpio, gpio_obj->pin, dir, pull_up, pull_down, open_drain); } static void swm_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value) { const struct swm_pin_device *gpio_obj; gpio_obj = _pin2struct(pin); if (gpio_obj == RT_NULL) { return; } if (value) { GPIO_AtomicSetBit(gpio_obj->gpio, gpio_obj->pin); } else { GPIO_AtomicClrBit(gpio_obj->gpio, gpio_obj->pin); } } static rt_ssize_t swm_pin_read(rt_device_t dev, rt_base_t pin) { const struct swm_pin_device *gpio_obj; gpio_obj = _pin2struct(pin); if (gpio_obj == RT_NULL) { return -RT_EINVAL; } return (rt_ssize_t)GPIO_GetBit(gpio_obj->gpio, gpio_obj->pin); } static rt_err_t swm_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; 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_base_t pin) { rt_base_t level; 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_uint8_t enabled) { const struct swm_pin_device *gpio_obj; rt_base_t level = 0; gpio_obj = _pin2struct(pin); if (gpio_obj == RT_NULL) { return -RT_ENOSYS; } if (enabled == PIN_IRQ_ENABLE) { switch (pin_irq_hdr_tab[pin].mode) { case PIN_IRQ_MODE_RISING: GPIO_Init(gpio_obj->gpio, gpio_obj->pin, 0, 0, 1, 0); EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_RISE_EDGE); break; case PIN_IRQ_MODE_FALLING: GPIO_Init(gpio_obj->gpio, gpio_obj->pin, 0, 1, 0, 0); EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_FALL_EDGE); break; case PIN_IRQ_MODE_RISING_FALLING: GPIO_Init(gpio_obj->gpio, gpio_obj->pin, 0, 1, 1, 0); EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_BOTH_EDGE); break; case PIN_IRQ_MODE_HIGH_LEVEL: GPIO_Init(gpio_obj->gpio, gpio_obj->pin, 0, 0, 1, 0); EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_HIGH_LEVEL); break; case PIN_IRQ_MODE_LOW_LEVEL: GPIO_Init(gpio_obj->gpio, gpio_obj->pin, 0, 1, 0, 0); EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_LOW_LEVEL); break; default: return -RT_EINVAL; } level = rt_hw_interrupt_disable(); NVIC_EnableIRQ(gpio_obj->irq); EXTI_Open(gpio_obj->gpio, gpio_obj->pin); rt_hw_interrupt_enable(level); } else if (enabled == PIN_IRQ_DISABLE) { level = rt_hw_interrupt_disable(); // NVIC_DisableIRQ(gpio_obj->irq); EXTI_Close(gpio_obj->gpio, gpio_obj->pin); rt_hw_interrupt_enable(level); } else { return -RT_ENOSYS; } return RT_EOK; } static rt_base_t swm_pin_get(const char *name) { rt_base_t pin = 0; int pin_num = 0; int i, name_len; name_len = rt_strlen(name); if ((name_len < 4) || (name_len >= 6)) { goto out; } if ((name[0] != 'P') || (name[2] != '.')) { goto out; } switch(name[1]) { case 'A': pin = 0; break; case 'B': pin = 16; break; case 'C': pin = 32; break; case 'D': pin = 48; break; case 'E': pin = 64; break; case 'M': pin = 80; break; case 'N': pin = 96; break; default: goto out; } for (i = 3; i < name_len; i++) { pin_num *= 10; pin_num += name[i] - '0'; } if(pin_num < 16) { pin += pin_num; } else { goto out; } return pin; out: rt_kprintf("Px.y x:A/B/C/D/E/M/N y:0~15, e.g. PA.0\n"); return -RT_EINVAL; } static const 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, .pin_get = swm_pin_get }; static void swm_pin_isr(GPIO_TypeDef *GPIOx) { static int gpio[16]; int index = 0; static int init = 0; const struct swm_pin_device *gpio_obj; if (init == 0) { init = 1; for (gpio_obj = &pin_obj[0]; gpio_obj->index < ITEM_NUM(pin_obj); gpio_obj++) { if (gpio_obj->gpio == GPIOx) { gpio[index] = gpio_obj->index; index++; RT_ASSERT(index <= 16) } } } for (index = 0; index < 16; index++) { gpio_obj = _pin2struct(gpio[index]); if (EXTI_State(gpio_obj->gpio, gpio_obj->pin)) { EXTI_Clear(gpio_obj->gpio, gpio_obj->pin); if (pin_irq_hdr_tab[gpio_obj->index].hdr) { pin_irq_hdr_tab[gpio_obj->index].hdr(pin_irq_hdr_tab[gpio_obj->index].args); } } } } void GPIOA_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPIOA); rt_interrupt_leave(); } void GPIOB_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPIOB); rt_interrupt_leave(); } void GPIOC_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPIOC); rt_interrupt_leave(); } void GPIOD_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPIOD); rt_interrupt_leave(); } void GPIOE_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPIOE); rt_interrupt_leave(); } void GPIOM_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPIOM); rt_interrupt_leave(); } void GPION_Handler(void) { rt_interrupt_enter(); swm_pin_isr(GPION); rt_interrupt_leave(); } int swm_pin_init(void) { return rt_device_pin_register("pin", &swm_pin_ops, RT_NULL); } #endif /* BSP_USING_GPIO */ #endif /* RT_USING_PIN */