#include "uc1604c_softspi.h"
#include <stm32f10x_gpio.h>
#include <stdint.h>
#include <stddef.h>

#define SPI_UC1604C_CTRL				SPI2
#define SPI_UC1604C_APBxClock_FUN		RCC_APB1PeriphClockCmd
#define SPI_UC1604C_CLK					RCC_APB1Periph_SPI2

#define SPI_UC1604C_GPIO_APBxClock_FUN	RCC_APB2PeriphClockCmd
#define SPI_UC1604C_GPIO_CLK			RCC_APB2Periph_GPIOD
#define SPI_UC1604C_GPIO_PORT			GPIOD

//RST
#define SPI_UC1604C_RST_PIN				GPIO_Pin_1
#define SPI_UC1604C_RST_LOW()			GPIO_ResetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_RST_PIN)
#define SPI_UC1604C_RST_HIGH()			GPIO_SetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_RST_PIN)
//DC
#define SPI_UC1604C_DC_PIN				GPIO_Pin_0
#define SPI_UC1604C_DC_LOW()			GPIO_ResetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_DC_PIN)
#define SPI_UC1604C_DC_HIGH()			GPIO_SetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_DC_PIN)
#define	SPI_UC1604C_MODE_CMD()         	SPI_UC1604C_DC_LOW()
#define	SPI_UC1604C_MODE_DAT()         	SPI_UC1604C_DC_HIGH()

//CS(NSS)
#define SPI_UC1604C_CS_PIN				GPIO_Pin_2
#define SPI_UC1604C_CS_LOW()			GPIO_ResetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_CS_PIN)
#define SPI_UC1604C_CS_HIGH()			GPIO_SetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_CS_PIN)
#define SPI_UC1604C_CS_ENABLE()			SPI_UC1604C_CS_LOW()
#define SPI_UC1604C_CS_DISABLE()		SPI_UC1604C_CS_HIGH()

//SCLK
#define SPI_UC1604C_SCLK_PIN			GPIO_Pin_4
#define SPI_UC1604C_SCLK_LOW()			GPIO_ResetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_SCLK_PIN)
#define SPI_UC1604C_SCLK_HIGH()			GPIO_SetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_SCLK_PIN)
//MOSI
#define SPI_UC1604C_MOSI_PIN			GPIO_Pin_3
#define SPI_UC1604C_MOSI_LOW()			GPIO_ResetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_MOSI_PIN)
#define SPI_UC1604C_MOSI_HIGH()			GPIO_SetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_MOSI_PIN)

static void UC1604C_InitializeGPIO(void);
static void UC1604C_WriteByte(uint8_t uiData);
static void UC1604C_WriteCommand(uint8_t uiCommand);

void UC1604C_Delay(uint32_t uiDelay)
{
	/*----------------------------------*/
	/* Variable Declaration				*/
	/*----------------------------------*/
	uint32_t	uiDelayTime;

	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
	while(uiDelay--)
	{
		uiDelayTime = 1000;
		while(--uiDelayTime);
	}
}

/*****************************************************************************/
/** Function Name:	UC1604C_InitializeGPIO.	    						**/
/** Purpose:		Initialize GPIO for SPI Pin.						    **/
/** Params:			None.													**/
/** Return:			None.													**/
/*****************************************************************************/
void UC1604C_InitializeGPIO(void)
{
	// Initialize data structure.
	GPIO_InitTypeDef GPIO_InitStructure;
	// Initialize GPIO.
	SPI_UC1604C_GPIO_APBxClock_FUN(SPI_UC1604C_GPIO_CLK, ENABLE);
	// Enable GPIO.
	GPIO_InitStructure.GPIO_Pin =	SPI_UC1604C_RST_PIN|SPI_UC1604C_DC_PIN|SPI_UC1604C_CS_PIN|SPI_UC1604C_SCLK_PIN|SPI_UC1604C_MOSI_PIN;
	GPIO_InitStructure.GPIO_Mode =	GPIO_Mode_Out_PP;
	GPIO_InitStructure.GPIO_Speed =	GPIO_Speed_2MHz;
	GPIO_Init(SPI_UC1604C_GPIO_PORT, &GPIO_InitStructure);
	GPIO_SetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_DC_PIN|SPI_UC1604C_CS_PIN|SPI_UC1604C_SCLK_PIN|SPI_UC1604C_MOSI_PIN);
	GPIO_ResetBits(SPI_UC1604C_GPIO_PORT, SPI_UC1604C_RST_PIN);
}

/*****************************************************************************/
/** Function Name:	UC1604C_WriteByte.		    						**/
/** Purpose:		Simulate SPI communication timing to write a byte to    **/
/**					LCD controller.	    									**/
/** Params:																	**/
/**	@ uiData:		Byte will be write.										**/
/** Return:			None.													**/
/*****************************************************************************/
void UC1604C_WriteByte(uint8_t uiByte)
{
	/*----------------------------------*/
	/* Variable Declaration				*/
	/*----------------------------------*/
	uint16_t                i;
	uint8_t                 uiSendByte;

	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
	uiSendByte = uiByte;
	SPI_UC1604C_CS_LOW();
	for(i=0;i<8;i++)
	{
		if(uiSendByte & 0x80)
		{
			SPI_UC1604C_MOSI_HIGH();
		}
		else
		{
			SPI_UC1604C_MOSI_LOW();
		}
		SPI_UC1604C_SCLK_LOW();
		SPI_UC1604C_SCLK_HIGH();

		uiSendByte <<= 1;
	}
	SPI_UC1604C_CS_HIGH();
}

/*****************************************************************************/
/** Function Name:	UC1604C_WriteData.										**/
/** Purpose:		Write a data byte to OLED coltroler.					**/
/** Resources:		None.													**/
/** Params:																	**/
/**	@ uiData:		One byte data will be write.							**/
/** Return:			None.													**/
/*****************************************************************************/
void UC1604C_WriteData(uint8_t uiData)
{
	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
	SPI_UC1604C_MODE_DAT();
	UC1604C_WriteByte(uiData);
}

/*****************************************************************************/
/** Function Name:	UC1604C_WriteCommand.									**/
/** Purpose:		Write a command byte to OLED coltroler.					**/
/** Resources:		None.													**/
/** Params:																	**/
/**	@ uiData:		One byte command will be write.							**/
/** Return:			None.													**/
/*****************************************************************************/
void UC1604C_WriteCommand(uint8_t uiCommand)
{
	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
	SPI_UC1604C_MODE_CMD();
	UC1604C_WriteByte(uiCommand);
}

/*****************************************************************************/
/** Function Name:	UC1604C_SetPosition.									**/
/** Purpose:		Set current position of page and colomn.				**/
/** Resources:		None.													**/
/** Params:																	**/
/**	@ uiColumn:		Position of column.										**/
/**	@ uiPage:		Position of page.										**/
/** Return:			None.													**/
/*****************************************************************************/
void UC1604C_SetPosition(uint8_t uiColumn, uint8_t uiPage)
{
	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
	UC1604C_WriteCommand(0xB0 | uiPage);
	UC1604C_WriteCommand(((uiColumn & 0xF0)>>4)|0x10);
	UC1604C_WriteCommand((uiColumn & 0x0F));
}

/*****************************************************************************/
/** Function Name:	UC1604C_Fill.											**/
/** Purpose:		Fill screen.											**/
/** Params:																	**/
/**	@ uiByte:		Filled data.											**/
/** Return:			None.													**/
/*****************************************************************************/
void UC1604C_Fill(uint8_t uiByte)//全屏填充
{
	/*----------------------------------*/
	/* Variable Declaration				*/
	/*----------------------------------*/
	uint8_t uiPage, uiColumn;

	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
	for(uiPage=0; uiPage<PAGE_MAX; uiPage++)
	{
		UC1604C_WriteCommand(0xB0 | uiPage);
		UC1604C_WriteCommand(0x01);
		UC1604C_WriteCommand(0x10);
		for(uiColumn=0; uiColumn<COLUMN_MAX; uiColumn++)
		{
			UC1604C_WriteData(uiByte);
		}
	}
}

/*****************************************************************************/
/** Function Name:	UC1604C_Initialize										**/
/** Purpose:		Run the device initialize sequence.						**/
/** Resources:		None.													**/
/** Params:			None.													**/
/** Return:			None.													**/
/** Notice:		    Initialize sequence must executed after power on 500ms.	**/
/*****************************************************************************/
void UC1604C_Initialize(void)
{
	/*----------------------------------*/
	/* Process							*/
	/*----------------------------------*/
    UC1604C_InitializeGPIO();
    // Reset
    SPI_UC1604C_RST_LOW();
    UC1604C_Delay(100);
    SPI_UC1604C_RST_HIGH();
    UC1604C_Delay(800);

    SPI_UC1604C_CS_ENABLE();
    // Soft reset.
    UC1604C_WriteCommand(0xE2);
    UC1604C_Delay(100);
    // Enable internal boost.
    UC1604C_WriteCommand(0x2F);
    UC1604C_Delay(100);

    UC1604C_WriteCommand(0x81);  //微调对比度
	UC1604C_WriteCommand(0x56);  //微调对比度的值，可设置范围0x00～0xFF
	UC1604C_WriteCommand(0xEB);  //1/9偏压比（bias）
	UC1604C_WriteCommand(0xC2);  //行列扫描顺序：从上到下 oxc2
	UC1604C_WriteCommand(0xAF);  //开显示
}