#include "gpio.h"


#define PxPU_BASE_ADDR  0x7EFE10 


void gpio_set_level(PIN_enum pin, uint8 level)
{
	if(0x00 == (pin&0xF0))	//P0
	{
		if(level)
			P0 |= (1<<(pin&0xF));
		else
			P0 &= ~(1<<(pin&0xF));
	}
	else if(0x10 == (pin&0xF0))	//P1
	{
		if(level)
			P1 |= (1<<(pin&0xF));
		else
			P1 &= ~(1<<(pin&0xF));
	}
	else if(0x20 == (pin&0xF0))	//P2
	{
		if(level)
			P2 |= (1<<(pin&0xF));
		else
			P2 &= ~(1<<(pin&0xF));
	}
	else if(0x30 == (pin&0xF0))	//P3
	{
		if(level)
			P3 |= (1<<(pin&0xF));
		else
			P3 &= ~(1<<(pin&0xF));
	}
	else if(0x40 == (pin&0xF0))	//P4
	{
		if(level)
			P4 |= (1<<(pin&0xF));
		else
			P4 &= ~(1<<(pin&0xF));
	}
	else if(0x50 == (pin&0xF0))	//P5
	{
		if(level)
			P5 |= (1<<(pin&0xF));
		else
			P5 &= ~(1<<(pin&0xF));
	}
	else if(0x60 == (pin&0xF0)) //P6
	{
		if(level)
			P6 |= (1<<(pin&0xF));
		else
			P6 &= ~(1<<(pin&0xF));
	}
	else if(0x70 == (pin&0xF0)) //P7
	{
		if(level)
			P7 |= (1<<(pin&0xF));
		else
			P7 &= ~(1<<(pin&0xF));
	}
}

uint8 gpio_get_level(PIN_enum pin)
{
	uint8 level;
	if(0x00 == (pin&0xF0))	//P0
	{
		level = (P0 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x10 == (pin&0xF0))	//P1
	{
		level = (P1 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x20 == (pin&0xF0))	//P2
	{
		level = (P2 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x30 == (pin&0xF0))	//P3
	{
		level = (P3 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x40 == (pin&0xF0))	//P4
	{
		level = (P4 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x50 == (pin&0xF0)) //P5
	{
		level = (P5 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x60 == (pin&0xF0)) //P6
	{
		level = (P6 & (1<<(pin&0xF))) ? 1 : 0;
	}
	else if(0x70 == (pin&0xF0)) //P7
	{
		level = (P7 & (1<<(pin&0xF))) ? 1 : 0;
	}
	return level;
}

//-------------------------------------------------------------------------------------------------------------------
//  @brief      GPIO设置引脚上拉电阻设置
//  @param      pin         选择引脚（P0_0-P7_7）
//  @param      pull        设置上下拉电阻 NOPULL:不设置 PULLUP:上拉
//  @return     void
//  Sample usage:           gpio_pull_set(P0_0,NOPULL);       // 设置P0.0引脚没有上下拉电阻
//-------------------------------------------------------------------------------------------------------------------
void gpio_pull_set(PIN_enum pin, PULL_enum pull)
{
	if(PULLUP == pull)
	{
		(*(unsigned char volatile far *)(PxPU_BASE_ADDR + (pin >> 4))) |= (1<<(pin&0x0F));
	}
	else if(NOPULL == pull)
	{
		(*(unsigned char volatile far *)(PxPU_BASE_ADDR + (pin >> 4))) &= ~(1<<(pin&0x0F));
	}
}



//-------------------------------------------------------------------------------------------------------------------
//  @brief      GPIO设置引脚模式
//  @param      pin         选择引脚（P0_0-P5_4）
//  @param      mode        引脚模式 GPIO:准双向口, GPO_PP:推挽输出, GPI_IMPEDANCE:高阻输入, GPI_OD:开漏输出
//  @return     void
//  Sample usage:           gpio_mode(P0_0,GPIO);       // 设置P0.0设置为双向IO
//-------------------------------------------------------------------------------------------------------------------
void gpio_mode(PIN_enum pin, GPIOMODE_enum mode)
{
	if(GPIO == mode)
	{
		if(0x00 == (pin&0xF0))	//P0
		{
			P0M1 &= ~(1<<(pin&0xF));
			P0M0 &= ~(1<<(pin&0xF));
		}
		if(0x10 == (pin&0xF0))	//P1
		{
			P1M1 &= ~(1<<(pin&0xF));
			P1M0 &= ~(1<<(pin&0xF));
		}
		if(0x20 == (pin&0xF0))	//P2
		{
			P2M1 &= ~(1<<(pin&0xF));
			P2M0 &= ~(1<<(pin&0xF));
		}
		
		if(0x30 == (pin&0xF0))	//P3
		{
			P3M1 &= ~(1<<(pin&0xF));
			P3M0 &= ~(1<<(pin&0xF));
		}
		if(0x40 == (pin&0xF0))	//P4
		{
			P4M1 &= ~(1<<(pin&0xF));
			P4M0 &= ~(1<<(pin&0xF));
		}
		if(0x50 == (pin&0xF0))	//P5
		{
			P5M1 &= ~(1<<(pin&0xF));
			P5M0 &= ~(1<<(pin&0xF));
		}
		if(0x60 == (pin&0xF0))	//P5
		{
			P6M1 &= ~(1<<(pin&0xF));
			P6M0 &= ~(1<<(pin&0xF));
		}
		if(0x70 == (pin&0xF0))	//P5
		{
			P7M1 &= ~(1<<(pin&0xF));
			P7M0 &= ~(1<<(pin&0xF));
		}
	}
	else if(GPO_PP == mode)
	{
		if(0x00 == (pin&0xF0))	//P0
		{
			P0M1 &= ~(1<<(pin&0xF));
			P0M0 |=  (1<<(pin&0xF));
		}
		if(0x10 == (pin&0xF0))	//P1
		{
			P1M1 &= ~(1<<(pin&0xF));
			P1M0 |=  (1<<(pin&0xF));
		}
		if(0x20 == (pin&0xF0))	//P2
		{
			P2M1 &= ~(1<<(pin&0xF));
			P2M0 |=  (1<<(pin&0xF));
		}
		
		if(0x30 == (pin&0xF0))	//P3
		{
			P3M1 &= ~(1<<(pin&0xF));
			P3M0 |=  (1<<(pin&0xF));
		}
		if(0x40 == (pin&0xF0))	//P4
		{
			P4M1 &= ~(1<<(pin&0xF));
			P4M0 |=  (1<<(pin&0xF));
		}
		if(0x50 == (pin&0xF0))	//P5
		{
			P5M1 &= ~(1<<(pin&0xF));
			P5M0 |=  (1<<(pin&0xF));
		}
		if(0x60 == (pin&0xF0))	//P4
		{
			P6M1 &= ~(1<<(pin&0xF));
			P6M0 |=  (1<<(pin&0xF));
		}
		if(0x70 == (pin&0xF0))	//P5
		{
			P7M1 &= ~(1<<(pin&0xF));
			P7M0 |=  (1<<(pin&0xF));
		}
		
	}
	else if(GPI_IMPEDANCE == mode)
	{
		if(0x00 == (pin&0xF0))	//P0
		{
			P0M1 |=  (1<<(pin&0xF));
			P0M0 &= ~(1<<(pin&0xF));
		}
		if(0x10 == (pin&0xF0))	//P1
		{
			P1M1 |=  (1<<(pin&0xF));
			P1M0 &= ~(1<<(pin&0xF));
		}
		if(0x20 == (pin&0xF0))	//P2
		{
			P2M1 |=  (1<<(pin&0xF));
			P2M0 &= ~(1<<(pin&0xF));
		}
		
		if(0x30 == (pin&0xF0))	//P3
		{
			P3M1 |=  (1<<(pin&0xF));
			P3M0 &= ~(1<<(pin&0xF));
		}
		if(0x40 == (pin&0xF0))	//P4
		{
			P4M1 |=  (1<<(pin&0xF));
			P4M0 &= ~(1<<(pin&0xF));
		}
		if(0x50 == (pin&0xF0))	//P5
		{
			P5M1 |=  (1<<(pin&0xF));
			P5M0 &= ~(1<<(pin&0xF));
		}
		if(0x60 == (pin&0xF0))	//P5
		{
			P6M1 |=  (1<<(pin&0xF));
			P6M0 &= ~(1<<(pin&0xF));
		}
		if(0x70 == (pin&0xF0))	//P5
		{
			P7M1 |=  (1<<(pin&0xF));
			P7M0 &= ~(1<<(pin&0xF));
		}
	}
	else if(GPI_OD == mode)
	{
		if(0x00 == (pin&0xF0))	//P0
		{
			P0M1 |= (1<<(pin&0xF));
			P0M0 |= (1<<(pin&0xF));
		}
		if(0x10 == (pin&0xF0))	//P1
		{
			P1M1 |= (1<<(pin&0xF));
			P1M0 |= (1<<(pin&0xF));
		}
		if(0x20 == (pin&0xF0))	//P2
		{
			P2M1 |= (1<<(pin&0xF));
			P2M0 |= (1<<(pin&0xF));
		}
		
		if(0x30 == (pin&0xF0))	//P3
		{
			P3M1 |= (1<<(pin&0xF));
			P3M0 |= (1<<(pin&0xF));
		}
		if(0x40 == (pin&0xF0))	//P4
		{
			P4M1 |= (1<<(pin&0xF));
			P4M0 |= (1<<(pin&0xF));
		}
		if(0x50 == (pin&0xF0))	//P5
		{
			P5M1 |= (1<<(pin&0xF));
			P5M0 |= (1<<(pin&0xF));
		}
		if(0x60 == (pin&0xF0))	//P5
		{
			P6M1 |= (1<<(pin&0xF));
			P6M0 |= (1<<(pin&0xF));
		}
		if(0x70 == (pin&0xF0))	//P5
		{
			P7M1 |= (1<<(pin&0xF));
			P7M0 |= (1<<(pin&0xF));
		}
	}
}