ZYNQ连载07-PIN设备

1. 简述

RT-Thread PIN设备
这里参看RT-Thread提供的PIN设备管理接口，简单封装了几个接口函数。

2. 实现

#include "include/drv_gpio.h"
#define LOG_TAG    "drv_gpio"
static XGpioPs xgpiops;


void rt_pin_mode(rt_base_t pin, rt_uint8_t mode)
{
	XGpioPs_Config *xgpiops_config;
	xgpiops_config = XGpioPs_LookupConfig(XPAR_XGPIOPS_0_DEVICE_ID);
	if (XST_SUCCESS != XGpioPs_CfgInitialize(&xgpiops, xgpiops_config, xgpiops_config->BaseAddr))
		log_e("XGpioPs_CfgInitialize fail");

	switch (mode)
	{
		case PIN_MODE_OUTPUT:
			XGpioPs_SetDirectionPin(&xgpiops, pin, 1);
			XGpioPs_SetOutputEnablePin(&xgpiops, pin, 1);
			break;
		case PIN_MODE_INPUT:
			XGpioPs_SetDirectionPin(&xgpiops, pin, 0);
			break;
		default:
			log_e("XGpioPs_SetDirectionPin fail");
			break;
	}
}


void rt_pin_write(rt_base_t pin, rt_uint8_t value)
{
	XGpioPs_WritePin(&xgpiops, pin, value);
}

rt_int8_t rt_pin_read(rt_base_t pin)
{
	return (rt_int8_t)XGpioPs_ReadPin(&xgpiops, pin);
}