374 lines
9.0 KiB
C
Executable File
374 lines
9.0 KiB
C
Executable File
/*
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* Copyright (c) 2006-2023, 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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* 2015-01-20 Bernard the first version
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* 2021-02-06 Meco Man fix RT_ENOSYS code in negative
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* 2022-04-29 WangQiang add pin operate command in MSH
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*/
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#include <drivers/pin.h>
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static struct rt_device_pin _hw_pin;
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static rt_ssize_t _pin_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
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{
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struct rt_device_pin_value *value;
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struct rt_device_pin *pin = (struct rt_device_pin *)dev;
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/* check parameters */
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RT_ASSERT(pin != RT_NULL);
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value = (struct rt_device_pin_value *)buffer;
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if (value == RT_NULL || size != sizeof(*value))
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return 0;
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value->value = pin->ops->pin_read(dev, value->pin);
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return size;
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}
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static rt_ssize_t _pin_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
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{
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struct rt_device_pin_value *value;
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struct rt_device_pin *pin = (struct rt_device_pin *)dev;
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/* check parameters */
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RT_ASSERT(pin != RT_NULL);
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value = (struct rt_device_pin_value *)buffer;
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if (value == RT_NULL || size != sizeof(*value))
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return 0;
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pin->ops->pin_write(dev, (rt_base_t)value->pin, (rt_base_t)value->value);
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return size;
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}
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static rt_err_t _pin_control(rt_device_t dev, int cmd, void *args)
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{
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struct rt_device_pin_mode *mode;
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struct rt_device_pin *pin = (struct rt_device_pin *)dev;
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/* check parameters */
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RT_ASSERT(pin != RT_NULL);
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mode = (struct rt_device_pin_mode *)args;
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if (mode == RT_NULL)
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return -RT_ERROR;
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pin->ops->pin_mode(dev, (rt_base_t)mode->pin, (rt_base_t)mode->mode);
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return 0;
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}
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#ifdef RT_USING_DEVICE_OPS
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const static struct rt_device_ops pin_ops =
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{
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RT_NULL,
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RT_NULL,
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RT_NULL,
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_pin_read,
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_pin_write,
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_pin_control
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};
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#endif
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int rt_device_pin_register(const char *name, const struct rt_pin_ops *ops, void *user_data)
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{
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_hw_pin.parent.type = RT_Device_Class_Pin;
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_hw_pin.parent.rx_indicate = RT_NULL;
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_hw_pin.parent.tx_complete = RT_NULL;
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#ifdef RT_USING_DEVICE_OPS
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_hw_pin.parent.ops = &pin_ops;
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#else
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_hw_pin.parent.init = RT_NULL;
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_hw_pin.parent.open = RT_NULL;
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_hw_pin.parent.close = RT_NULL;
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_hw_pin.parent.read = _pin_read;
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_hw_pin.parent.write = _pin_write;
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_hw_pin.parent.control = _pin_control;
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#endif
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_hw_pin.ops = ops;
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_hw_pin.parent.user_data = user_data;
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/* register a character device */
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rt_device_register(&_hw_pin.parent, name, RT_DEVICE_FLAG_RDWR);
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return 0;
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}
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rt_err_t rt_pin_attach_irq(rt_base_t pin, rt_uint8_t mode,
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void (*hdr)(void *args), void *args)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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if (_hw_pin.ops->pin_attach_irq)
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{
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return _hw_pin.ops->pin_attach_irq(&_hw_pin.parent, pin, mode, hdr, args);
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}
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return -RT_ENOSYS;
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}
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rt_err_t rt_pin_detach_irq(rt_base_t pin)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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if (_hw_pin.ops->pin_detach_irq)
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{
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return _hw_pin.ops->pin_detach_irq(&_hw_pin.parent, pin);
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}
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return -RT_ENOSYS;
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}
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rt_err_t rt_pin_irq_enable(rt_base_t pin, rt_uint8_t enabled)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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if (_hw_pin.ops->pin_irq_enable)
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{
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return _hw_pin.ops->pin_irq_enable(&_hw_pin.parent, pin, enabled);
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}
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return -RT_ENOSYS;
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}
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/* RT-Thread Hardware PIN APIs */
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void rt_pin_mode(rt_base_t pin, rt_uint8_t mode)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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_hw_pin.ops->pin_mode(&_hw_pin.parent, pin, mode);
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}
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void rt_pin_write(rt_base_t pin, rt_ssize_t value)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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_hw_pin.ops->pin_write(&_hw_pin.parent, pin, value);
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}
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rt_ssize_t rt_pin_read(rt_base_t pin)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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return _hw_pin.ops->pin_read(&_hw_pin.parent, pin);
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}
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/* Get pin number by name, such as PA.0, P0.12 */
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rt_base_t rt_pin_get(const char *name)
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{
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RT_ASSERT(_hw_pin.ops != RT_NULL);
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if (_hw_pin.ops->pin_get == RT_NULL)
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{
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return -RT_ENOSYS;
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}
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return _hw_pin.ops->pin_get(name);
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}
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#ifdef RT_USING_FINSH
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <finsh.h>
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#include <msh_parse.h>
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/*
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* convert function for port name
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*/
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static rt_base_t _pin_cmd_conv(const char *name)
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{
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return rt_pin_get(name);
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}
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static void _pin_cmd_print_usage(void)
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{
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rt_kprintf("pin [option] GPIO\n");
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rt_kprintf(" num: get pin number from hardware pin\n");
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rt_kprintf(" mode: set pin mode to output/input/input_pullup/input_pulldown/output_od\n");
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rt_kprintf(" e.g. MSH >pin mode GPIO output\n");
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rt_kprintf(" read: read pin level of hardware pin\n");
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rt_kprintf(" e.g. MSH >pin read GPIO\n");
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rt_kprintf(" write: write pin level(high/low or on/off) to hardware pin\n");
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rt_kprintf(" e.g. MSH >pin write GPIO high\n");
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rt_kprintf(" help: this help list\n");
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rt_kprintf("GPIO e.g.:");
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rt_pin_get(" ");
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}
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/* e.g. MSH >pin num PA.16 */
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static void _pin_cmd_get(int argc, char *argv[])
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{
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rt_base_t pin;
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if (argc < 3)
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{
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_pin_cmd_print_usage();
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return;
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}
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pin = _pin_cmd_conv(argv[2]);
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if (pin < 0)
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{
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rt_kprintf("Parameter invalid : %s!\n", argv[2]);
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_pin_cmd_print_usage();
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return ;
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}
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rt_kprintf("%s : %d\n", argv[2], pin);
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}
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/* e.g. MSH >pin mode PA.16 output */
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static void _pin_cmd_mode(int argc, char *argv[])
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{
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rt_base_t pin;
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rt_base_t mode;
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if (argc < 4)
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{
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_pin_cmd_print_usage();
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return;
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}
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if (!msh_isint(argv[2]))
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{
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pin = _pin_cmd_conv(argv[2]);
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if (pin < 0)
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{
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rt_kprintf("Parameter invalid : %s!\n", argv[2]);
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_pin_cmd_print_usage();
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return;
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}
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}
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else
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{
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pin = atoi(argv[2]);
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}
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if (0 == rt_strcmp("output", argv[3]))
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{
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mode = PIN_MODE_OUTPUT;
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}
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else if (0 == rt_strcmp("input", argv[3]))
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{
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mode = PIN_MODE_INPUT;
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}
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else if (0 == rt_strcmp("input_pullup", argv[3]))
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{
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mode = PIN_MODE_INPUT_PULLUP;
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}
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else if (0 == rt_strcmp("input_pulldown", argv[3]))
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{
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mode = PIN_MODE_INPUT_PULLDOWN;
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}
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else if (0 == rt_strcmp("output_od", argv[3]))
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{
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mode = PIN_MODE_OUTPUT_OD;
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}
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else
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{
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_pin_cmd_print_usage();
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return;
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}
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rt_pin_mode(pin, mode);
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}
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/* e.g. MSH >pin read PA.16 */
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static void _pin_cmd_read(int argc, char *argv[])
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{
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rt_base_t pin;
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rt_uint8_t value;
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if (argc < 3)
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{
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_pin_cmd_print_usage();
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return;
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}
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if (!msh_isint(argv[2]))
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{
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pin = _pin_cmd_conv(argv[2]);
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if (pin < 0)
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{
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rt_kprintf("Parameter invalid : %s!\n", argv[2]);
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_pin_cmd_print_usage();
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return;
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}
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}
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else
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{
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pin = atoi(argv[2]);
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}
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value = rt_pin_read(pin);
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if (value == PIN_HIGH)
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{
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rt_kprintf("pin[%d] = high\n", pin);
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}
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else
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{
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rt_kprintf("pin[%d] = low\n", pin);
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}
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}
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/* e.g. MSH >pin write PA.16 high */
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static void _pin_cmd_write(int argc, char *argv[])
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{
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rt_base_t pin;
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rt_uint8_t value;
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if (argc < 4)
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{
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_pin_cmd_print_usage();
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return;
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}
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if (!msh_isint(argv[2]))
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{
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pin = _pin_cmd_conv(argv[2]);
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if (pin < 0)
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{
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rt_kprintf("Parameter invalid : %s!\n", argv[2]);
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_pin_cmd_print_usage();
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return;
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}
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}
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else
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{
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pin = atoi(argv[2]);
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}
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if ((0 == rt_strcmp("high", argv[3])) || (0 == rt_strcmp("on", argv[3])))
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{
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value = PIN_HIGH;
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}
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else if ((0 == rt_strcmp("low", argv[3])) || (0 == rt_strcmp("off", argv[3])))
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{
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value = PIN_LOW;
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}
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else
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{
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_pin_cmd_print_usage();
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return;
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}
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rt_pin_write(pin, value);
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}
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static void _pin_cmd(int argc, char *argv[])
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{
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if (argc < 3)
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{
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_pin_cmd_print_usage();
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return ;
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}
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if (0 == rt_strcmp("num", argv[1]))
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{
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_pin_cmd_get(argc, argv);
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}
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else if (0 == rt_strcmp("mode", argv[1]))
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{
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_pin_cmd_mode(argc, argv);
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}
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else if (0 == rt_strcmp("read", argv[1]))
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{
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_pin_cmd_read(argc, argv);
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}
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else if (0 == rt_strcmp("write", argv[1]))
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{
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_pin_cmd_write(argc, argv);
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}
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else
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{
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_pin_cmd_print_usage();
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return;
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}
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}
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MSH_CMD_EXPORT_ALIAS(_pin_cmd, pin, pin [option]);
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#endif /* RT_USING_FINSH */
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