478 lines
11 KiB
C
478 lines
11 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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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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* 2020-06-16 guohp1128 first version
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*/
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#include "drv_gpio.h"
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#ifdef RT_USING_PIN
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static const struct pin_index pins[] =
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{
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__NRF5X_PIN(0 , 0, 0 ),
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__NRF5X_PIN(1 , 0, 1 ),
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__NRF5X_PIN(2 , 0, 2 ),
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__NRF5X_PIN(3 , 0, 3 ),
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__NRF5X_PIN(4 , 0, 4 ),
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__NRF5X_PIN(5 , 0, 5 ),
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__NRF5X_PIN(6 , 0, 6 ),
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__NRF5X_PIN(7 , 0, 7 ),
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__NRF5X_PIN(8 , 0, 8 ),
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__NRF5X_PIN(9 , 0, 9 ),
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__NRF5X_PIN(10, 0, 10),
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__NRF5X_PIN(11, 0, 11),
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__NRF5X_PIN(12, 0, 12),
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__NRF5X_PIN(13, 0, 13),
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__NRF5X_PIN(14, 0, 14),
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__NRF5X_PIN(15, 0, 15),
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__NRF5X_PIN(16, 0, 16),
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__NRF5X_PIN(17, 0, 17),
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__NRF5X_PIN(18, 0, 18),
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__NRF5X_PIN(19, 0, 19),
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__NRF5X_PIN(20, 0, 20),
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__NRF5X_PIN(21, 0, 21),
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__NRF5X_PIN(22, 0, 22),
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__NRF5X_PIN(23, 0, 23),
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__NRF5X_PIN(24, 0, 24),
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__NRF5X_PIN(25, 0, 25),
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__NRF5X_PIN(26, 0, 26),
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__NRF5X_PIN(27, 0, 27),
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__NRF5X_PIN(28, 0, 28),
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__NRF5X_PIN(29, 0, 29),
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__NRF5X_PIN(30, 0, 30),
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__NRF5X_PIN(31, 0, 31),
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#ifdef SOC_NRF52840
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__NRF5X_PIN(32, 1, 0 ),
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__NRF5X_PIN(33, 1, 1 ),
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__NRF5X_PIN(34, 1, 2 ),
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__NRF5X_PIN(35, 1, 3 ),
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__NRF5X_PIN(36, 1, 4 ),
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__NRF5X_PIN(37, 1, 5 ),
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__NRF5X_PIN(38, 1, 6 ),
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__NRF5X_PIN(39, 1, 7 ),
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__NRF5X_PIN(40, 1, 8 ),
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__NRF5X_PIN(41, 1, 9 ),
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__NRF5X_PIN(42, 1, 10),
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__NRF5X_PIN(43, 1, 11),
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__NRF5X_PIN(44, 1, 12),
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__NRF5X_PIN(45, 1, 13),
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__NRF5X_PIN(46, 1, 14),
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__NRF5X_PIN(47, 1, 15),
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#endif /* SOC_NRF52840 */
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};
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/* EVENTS_IN[n](n=0..7) and EVENTS_PORT */
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static 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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};
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#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
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/* pin: the number of pins */
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static const struct pin_index *get_pin(uint8_t pin)
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{
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const struct pin_index *index;
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if (pin < ITEM_NUM(pins))
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{
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index = &pins[pin];
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if (index->index == -1)
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index = RT_NULL;
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}
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else
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{
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index = RT_NULL;
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}
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return index;
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};
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static void nrf5x_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value)
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{
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const struct pin_index *index;
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index = get_pin(pin);
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if (index == RT_NULL)
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{
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return;
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}
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nrf_gpio_pin_write(pin, value);
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}
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static int nrf5x_pin_read(rt_device_t dev, rt_base_t pin)
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{
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int value;
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const struct pin_index *index;
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value = PIN_LOW;
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index = get_pin(pin);
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if (index == RT_NULL)
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{
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return value;
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}
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value = nrf_gpio_pin_read(pin);
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return value;
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}
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static void nrf5x_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
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{
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const struct pin_index *index;
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index = get_pin(pin);
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if (index == RT_NULL)
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{
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return;
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}
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if (mode == PIN_MODE_OUTPUT)
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{
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/* output setting */
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nrf_gpio_cfg_output(pin);
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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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nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_NOPULL);
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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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nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_PULLUP);
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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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nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_PULLDOWN);
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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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nrf_gpio_cfg(
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pin,
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NRF_GPIO_PIN_DIR_OUTPUT,
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NRF_GPIO_PIN_INPUT_DISCONNECT,
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NRF_GPIO_PIN_NOPULL,
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NRF_GPIO_PIN_S0D1,
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NRF_GPIO_PIN_NOSENSE);
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}
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}
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static void pin_irq_hdr(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
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{
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int i;
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int irq_quantity;
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irq_quantity = ITEM_NUM(pin_irq_hdr_tab);
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for(i = 0; i < irq_quantity; i++)
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{
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if(pin_irq_hdr_tab[i].pin == pin)
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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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/* args = true : hi_accuracy(IN_EVENT)
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* args = false: lo_accuracy(PORT_EVENT)
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*/
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static rt_err_t nrf5x_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
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rt_uint32_t mode, void (*hdr)(void *args), void *args)
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{
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const struct pin_index *index;
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rt_int32_t irqindex = -1;
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rt_base_t level;
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nrfx_err_t err_code;
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int i;
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int irq_quantity;
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index = get_pin(pin);
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if (index == RT_NULL)
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{
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return RT_ENOSYS;
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}
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irq_quantity = ITEM_NUM(pin_irq_hdr_tab);
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for(i = 0; i < irq_quantity; i++)
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{
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if(pin_irq_hdr_tab[i].pin != -1)
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{
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irqindex = -1;
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continue;
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}
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else
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{
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irqindex = i;
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break;
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}
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}
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if(irqindex == -1)
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{
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return RT_ENOMEM;
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}
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level = rt_hw_interrupt_disable();
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pin_irq_hdr_tab[irqindex].pin = pin;
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pin_irq_hdr_tab[irqindex].hdr = hdr;
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pin_irq_hdr_tab[irqindex].mode = mode;
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pin_irq_hdr_tab[irqindex].args = args;
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if(mode == PIN_IRQ_MODE_RISING)
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{
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nrfx_gpiote_in_config_t inConfig = NRFX_GPIOTE_CONFIG_IN_SENSE_LOTOHI(args);
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inConfig.pull = NRF_GPIO_PIN_PULLDOWN;
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err_code = nrfx_gpiote_in_init(pin, &inConfig, pin_irq_hdr);
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}
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else if(mode == PIN_IRQ_MODE_FALLING)
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{
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nrfx_gpiote_in_config_t inConfig = NRFX_GPIOTE_CONFIG_IN_SENSE_HITOLO(args);
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inConfig.pull = NRF_GPIO_PIN_PULLUP;
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err_code = nrfx_gpiote_in_init(pin, &inConfig, pin_irq_hdr);
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}
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else if(mode == PIN_IRQ_MODE_RISING_FALLING)
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{
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nrfx_gpiote_in_config_t inConfig = NRFX_GPIOTE_CONFIG_IN_SENSE_TOGGLE(args);
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inConfig.pull = NRF_GPIO_PIN_PULLUP;
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err_code = nrfx_gpiote_in_init(pin, &inConfig, pin_irq_hdr);
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}
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rt_hw_interrupt_enable(level);
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switch(err_code)
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{
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case NRFX_ERROR_BUSY:
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return RT_EBUSY;
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case NRFX_SUCCESS:
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return RT_EOK;
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case NRFX_ERROR_NO_MEM:
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return RT_ENOMEM;
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default:
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return RT_ERROR;
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}
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}
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static rt_err_t nrf5x_pin_dettach_irq(struct rt_device *device, rt_int32_t pin)
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{
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const struct pin_index *index;
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rt_base_t level;
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int i;
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int irq_quantity;
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index = get_pin(pin);
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if (index == RT_NULL)
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{
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return RT_ENOSYS;
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}
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irq_quantity = ITEM_NUM(pin_irq_hdr_tab);
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for(i = 0; i < irq_quantity; i++)
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{
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if(pin_irq_hdr_tab[i].pin == pin)
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{
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level = rt_hw_interrupt_disable();
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pin_irq_hdr_tab[i].pin = -1;
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pin_irq_hdr_tab[i].hdr = RT_NULL;
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pin_irq_hdr_tab[i].mode = 0;
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pin_irq_hdr_tab[i].args = RT_NULL;
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nrfx_gpiote_in_uninit(pin);
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rt_hw_interrupt_enable(level);
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break;
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}
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}
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if(i >= irq_quantity)
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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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static rt_err_t nrf5x_pin_irq_enable(struct rt_device *device, rt_base_t pin,
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rt_uint32_t enabled)
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{
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const struct pin_index *index;
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rt_base_t level;
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int i;
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int irq_quantity;
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index = get_pin(pin);
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if (index == RT_NULL)
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{
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return RT_ENOSYS;
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}
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irq_quantity = ITEM_NUM(pin_irq_hdr_tab);
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for(i = 0; i < irq_quantity; i++)
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{
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if(pin_irq_hdr_tab[i].pin == pin)
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{
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level = rt_hw_interrupt_disable();
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if(enabled == PIN_IRQ_ENABLE)
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{
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nrfx_gpiote_in_event_enable(pin,enabled);
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}
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else if(enabled == PIN_IRQ_DISABLE)
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{
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nrfx_gpiote_in_event_disable(pin);
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}
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rt_hw_interrupt_enable(level);
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break;
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}
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}
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if(i >= irq_quantity)
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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 _nrf5x_pin_ops =
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{
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nrf5x_pin_mode,
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nrf5x_pin_write,
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nrf5x_pin_read,
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nrf5x_pin_attach_irq,
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nrf5x_pin_dettach_irq,
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nrf5x_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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nrfx_err_t err_code;
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err_code = (nrfx_err_t)rt_device_pin_register("pin", &_nrf5x_pin_ops, RT_NULL);
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err_code = nrfx_gpiote_init(NRFX_GPIOTE_CONFIG_IRQ_PRIORITY);
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switch(err_code)
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{
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case NRFX_ERROR_INVALID_STATE:
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return RT_EINVAL;
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case NRFX_SUCCESS:
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return RT_EOK;
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default:
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return RT_ERROR;;
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}
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}
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INIT_BOARD_EXPORT(rt_hw_pin_init);
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/* test GPIO write, read, input interrupt */
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#define DK_BOARD_LED_1 13
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#define DK_BOARD_LED_2 14
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#define DK_BOARD_LED_3 15
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#define DK_BOARD_LED_4 16
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#define DK_BOARD_BUTTON_1 11
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#define DK_BOARD_BUTTON_2 12
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#define DK_BOARD_BUTTON_3 24
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#define DK_BOARD_BUTTON_4 25
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void button_1_callback(void *args)
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{
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static int flag1 = 0;
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if(flag1 == 0)
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{
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flag1 = 1;
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rt_pin_write(DK_BOARD_LED_1, PIN_LOW);
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}
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else
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{
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flag1 = 0;
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rt_pin_write(DK_BOARD_LED_1, PIN_HIGH);
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}
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}
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void button_2_callback(void *args)
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{
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static int flag2 = 0;
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if(flag2 == 0)
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{
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flag2 = 1;
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rt_pin_write(DK_BOARD_LED_2, PIN_LOW);
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}
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else
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{
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flag2 = 0;
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rt_pin_write(DK_BOARD_LED_2, PIN_HIGH);
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}
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}
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void button_3_callback(void *args)
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{
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static int flag3 = 0;
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if(flag3 == 0)
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{
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flag3 = 1;
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rt_pin_write(DK_BOARD_LED_3, PIN_LOW);
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}
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else
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{
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flag3 = 0;
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rt_pin_write(DK_BOARD_LED_3, PIN_HIGH);
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}
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}
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void button_4_callback(void *args)
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{
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static int flag4 = 0;
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if(flag4 == 0)
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{
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flag4 = 1;
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rt_pin_write(DK_BOARD_LED_4, PIN_LOW);
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}
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else
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{
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flag4 = 0;
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rt_pin_write(DK_BOARD_LED_4, PIN_HIGH);
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}
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}
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void gpio_sample(void)
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{
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rt_pin_mode(DK_BOARD_LED_1, PIN_MODE_OUTPUT);
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rt_pin_mode(DK_BOARD_LED_2, PIN_MODE_OUTPUT);
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rt_pin_mode(DK_BOARD_LED_3, PIN_MODE_OUTPUT);
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rt_pin_mode(DK_BOARD_LED_4, PIN_MODE_OUTPUT);
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rt_pin_write(DK_BOARD_LED_1, PIN_HIGH);
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rt_pin_write(DK_BOARD_LED_2, PIN_HIGH);
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rt_pin_write(DK_BOARD_LED_3, PIN_HIGH);
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rt_pin_write(DK_BOARD_LED_4, PIN_HIGH);
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rt_pin_attach_irq(DK_BOARD_BUTTON_1, PIN_IRQ_MODE_FALLING,
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button_1_callback, (void*) true); //true: hi_accuracy(IN_EVENT),false: lo_accuracy(PORT_EVENT)
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rt_pin_irq_enable(DK_BOARD_BUTTON_1, PIN_IRQ_ENABLE);
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rt_pin_attach_irq(DK_BOARD_BUTTON_2, PIN_IRQ_MODE_FALLING,
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button_2_callback, (void*) true); //true: hi_accuracy(IN_EVENT),false: lo_accuracy(PORT_EVENT)
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rt_pin_irq_enable(DK_BOARD_BUTTON_2, PIN_IRQ_ENABLE);
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rt_pin_attach_irq(DK_BOARD_BUTTON_3, PIN_IRQ_MODE_FALLING,
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button_3_callback, (void*) true); //true: hi_accuracy(IN_EVENT),false: lo_accuracy(PORT_EVENT)
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rt_pin_irq_enable(DK_BOARD_BUTTON_3, PIN_IRQ_ENABLE);
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rt_pin_attach_irq(DK_BOARD_BUTTON_4, PIN_IRQ_MODE_FALLING,
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button_4_callback, (void*) false); //true: hi_accuracy(IN_EVENT),false: lo_accuracy(PORT_EVENT)
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rt_pin_irq_enable(DK_BOARD_BUTTON_4, PIN_IRQ_ENABLE);
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}
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MSH_CMD_EXPORT(gpio_sample, gpio sample);
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#endif /* RT_USING_PIN */
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