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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-06-27 AHTYDHD the first version
*/
#include "drv_gpio.h"
#include <rthw.h>
#include <rtdevice.h>
#include "drv_gpio.h"
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#ifdef RT_USING_PIN
static const struct pin_index pins[] =
{
_TM4C_PIN(0, F, 0),
_TM4C_PIN(1, F, 1),
_TM4C_PIN(2, F, 2),
_TM4C_PIN(3, F, 3),
_TM4C_PIN(4, F, 4)
};
/* this is pin_irq map, reserved for update */
static struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
{
{-1, 0, RT_NULL, RT_NULL},
};
static uint32_t pin_irq_enable_mask = 0;
#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
static const struct pin_index *get_pin(uint8_t pin)
{
const struct pin_index *index;
if (pin < ITEM_NUM(pins))
{
index = &pins[pin];
if (index->index == -1)
index = RT_NULL;
}
else
{
index = RT_NULL;
}
return index;
};
static void tm4c123_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
{
const struct pin_index *index;
index = get_pin(pin);
if (index == RT_NULL)
{
return;
}
if (mode == PIN_MODE_INPUT)
{
GPIOPinTypeGPIOInput(index ->gpioBaseAddress, index->pin);
}
else if (mode == PIN_MODE_OUTPUT)
{
GPIOPinTypeGPIOOutput(index->gpioBaseAddress, index->pin);
}
else if (mode == PIN_MODE_INPUT_PULLUP)
{
GPIODirModeSet(index->gpioBaseAddress, index->pin, GPIO_DIR_MODE_IN);
GPIOPadConfigSet(index->gpioBaseAddress, index->pin, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);
}
else if (mode == PIN_MODE_INPUT_PULLDOWN)
{
GPIODirModeSet(index->gpioBaseAddress, index->pin, GPIO_DIR_MODE_IN);
GPIOPadConfigSet(index->gpioBaseAddress, index->pin, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPD);
}
else if (mode == PIN_MODE_OUTPUT_OD)
{
GPIOPadConfigSet(index->gpioBaseAddress, index->pin, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_OD);
GPIODirModeSet(index->gpioBaseAddress, index->pin, GPIO_DIR_MODE_OUT);
}
}
static void tm4c123_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t ui8Val)
{
const struct pin_index *index;
index = get_pin(pin);
if (index == RT_NULL)
{
return;
}
if (ui8Val)
{
GPIOPinWrite(index ->gpioBaseAddress, index->pin, index->pin);
}
else
{
GPIOPinWrite(index ->gpioBaseAddress, index->pin, 0);
}
}
static rt_ssize_t tm4c123_pin_read(rt_device_t dev, rt_base_t pin)
{
const struct pin_index *index;
rt_ssize_t value = 0;
index = get_pin(pin);
if (index == RT_NULL)
{
return -RT_EINVAL;
}
value = GPIOPinRead(index ->gpioBaseAddress, index ->pin);
return value;
}
static rt_err_t tm4c123_pin_attach_irq(rt_device_t device, rt_int32_t pin, rt_uint32_t mode, void (*hdr)(void *args), void *args)
{
/* this is interface for pin_irq, reserved for update. */
return RT_EOK;
}
static rt_err_t tm4c123_pin_dettach_irq(rt_device_t device, rt_int32_t pin)
{
/* this is interface for pin_irq, reserved for update. */
return RT_EOK;
}
static rt_err_t tm4c123_pin_irq_enable(rt_device_t device, rt_base_t pin,
rt_uint32_t enabled)
{
/* this is interface for pin_irq_enable, reserved for update. */
return RT_EOK;
}
const static struct rt_pin_ops _tm4c123_pin_ops =
{
tm4c123_pin_mode,
tm4c123_pin_write,
tm4c123_pin_read,
tm4c123_pin_attach_irq,
tm4c123_pin_dettach_irq,
tm4c123_pin_irq_enable,
RT_NULL,
};
int rt_hw_pin_init(void)
{
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
return rt_device_pin_register("pin", &_tm4c123_pin_ops, RT_NULL);
}
INIT_BOARD_EXPORT(rt_hw_pin_init);
#endif /*RT_USING_PIN*/
/************************** end of file ******************/
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