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87 lines
1.9 KiB
87 lines
1.9 KiB
/*
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* Copyright (c) 2006-2018, 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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* 2020-11-27 WangHuachen the first version
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*/
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#include <rtdevice.h>
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#include <rthw.h>
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#include "drv_gpio.h"
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#include "xgpiops.h"
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#define DBG_TAG "drv.gpio"
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#define DBG_LVL DBG_INFO
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#include "rtdbg.h"
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#define GPIO_DEVICE_ID XPAR_XGPIOPS_0_DEVICE_ID
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static XGpioPs Gpio; /* The driver instance for GPIO Device. */
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void xgpiops_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode)
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{
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switch (mode)
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{
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case PIN_MODE_OUTPUT:
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case PIN_MODE_OUTPUT_OD:
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XGpioPs_SetDirectionPin(&Gpio, pin, 1);
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XGpioPs_SetOutputEnablePin(&Gpio, pin, 1);
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break;
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case PIN_MODE_INPUT:
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case PIN_MODE_INPUT_PULLUP:
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case PIN_MODE_INPUT_PULLDOWN:
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XGpioPs_SetDirectionPin(&Gpio, pin, 0);
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break;
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default:
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break;
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}
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}
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void xgpiops_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value)
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{
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if (pin >= Gpio.MaxPinNum)
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return;
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XGpioPs_WritePin(&Gpio, pin, (value == PIN_HIGH)?1:0);
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}
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rt_ssize_t xgpiops_pin_read(rt_device_t dev, rt_base_t pin)
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{
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if (pin >= Gpio.MaxPinNum)
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{
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return -RT_EINVAL;
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}
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int DataRead = XGpioPs_ReadPin(&Gpio, pin);
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return DataRead?PIN_HIGH:PIN_LOW;
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}
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const static struct rt_pin_ops _xgpiops_pin_ops =
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{
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xgpiops_pin_mode,
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xgpiops_pin_write,
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xgpiops_pin_read,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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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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int result;
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XGpioPs_Config *ConfigPtr;
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/* Initialize the GPIO driver. */
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ConfigPtr = XGpioPs_LookupConfig(GPIO_DEVICE_ID);
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if (XGpioPs_CfgInitialize(&Gpio, ConfigPtr,
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ConfigPtr->BaseAddr) == XST_SUCCESS)
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{
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result = rt_device_pin_register("pin", &_xgpiops_pin_ops, RT_NULL);
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return result;
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}
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return -RT_ERROR;
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}
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INIT_BOARD_EXPORT(rt_hw_pin_init);
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