/************************************************************************

 * Copyright(c) 2023 Levetop Semiconductor Co.,Led. All rights reserved.

 * @file     iic.c

 * @author   UartTFT Application Team

 * @version  V1.0.0

 * @date     2023-02-24

 * @brief

 *************************************************************************/

#include "iic.h"

#define TIMEOUT 50000

#define hwI2C0_Device_Addr 0x28

extern uint8_t bI2C0_TxM_Data[16];

extern uint8_t bI2C0_RxM_Data[128];

uint8_t IIC_Buf[128];

uint32_t u32Tmp;

uint8_t tmpID, tmpEvent;

uint32_t u16Tmp, tmpX, tmpY;

uint16_t tpX[10], tpY[10];

uint32_t TPmaxX, TPmaxY;

uint8_t tpActive;

void i2c_delay(uint8_t us)

{

	uint8_t i;

//	for (i = 0; i < us; i++)

//		asm("NOP");

}

void I2cInit(void)

{

	I2C_ConfigGpio(I2C_SDA, GPIO_OUTPUT);

	I2C_ConfigGpio(I2C_SCL, GPIO_OUTPUT);

	SPI_ConfigGpio(SPI3, SPI_SS, GPIO_OUTPUT);

	EPORT_ConfigGpio(EPORT_PIN4, GPIO_INPUT);

}

void i2c_sda_output(void)

{

	I2C_ConfigGpio(I2C_SDA, GPIO_OUTPUT);

}

void i2c_sda_input(void)

{

	I2C_ConfigGpio(I2C_SDA, GPIO_INPUT);

}

void i2c_set_scl(uint8_t index)

{

	if (index)

		I2C_WriteGpioData(I2C_SCL, 1);

	else

		I2C_WriteGpioData(I2C_SCL, 0);

}

void i2c_set_sda(uint8_t index)

{

	if (index)

		I2C_WriteGpioData(I2C_SDA, 1);

	else

		I2C_WriteGpioData(I2C_SDA, 0);

}

uint8_t i2c_get_sda(void)

{

	if (I2C_ReadGpioData(I2C_SDA))

		return 1;

	else

		return 0;

}

void i2c_start(void)

{

	i2c_sda_output();

	i2c_set_sda(1);

	i2c_set_scl(1);

	DelayUS(20);

	i2c_set_sda(0);

	DelayUS(2);

	i2c_set_scl(0);

	DelayUS(2);

}

void i2c_stop(void)

{

	i2c_sda_output();

	i2c_set_scl(0);

	i2c_set_sda(0);

	i2c_set_scl(1);

	DelayUS(2);

	i2c_set_sda(1);

	DelayUS(2);

}

uint8_t i2c_write(uint8_t value)

{

	uint8_t i, j, ack;

	i2c_sda_output();

	i2c_set_scl(0);

	for (i = 0; i < 8; i++)

	{

		if (value & 0x80)

			i2c_set_sda(1);

		else

			i2c_set_sda(0);

		DelayUS(2);

		i2c_set_scl(1);

		DelayUS(3);

		i2c_set_scl(0);

		value = value << 1;

	}

	i2c_sda_input();

	DelayUS(20);

	i2c_set_scl(1);

	DelayUS(1);

	ack = i2c_get_sda();

	i2c_set_scl(0);

	return ack;

}

uint8_t i2c_read(uint8_t ack)

{

	uint8_t i, j, u8Tmp;

	i2c_sda_input();

	u8Tmp = 0x00;

	for (i = 0; i < 8; i++)

	{

		u8Tmp = u8Tmp << 1;

		i2c_set_scl(0);

		DelayUS(3);

		i2c_set_scl(1);

		DelayUS(2);

		if (i2c_get_sda())

			u8Tmp |= 0x01;

	}

	i2c_set_scl(0);

	i2c_sda_output();

	if (ack)

		i2c_set_sda(0);

	else

		i2c_set_sda(1);

	DelayUS(20);

	i2c_set_scl(1);

	DelayUS(2);

	i2c_set_scl(0);

	return u8Tmp;

}

void read_xy(void)

{

	uint8_t i;

	uint32_t crcVal;

	i2c_start();

	i2c_write(0x82);

	i2c_write(0x10);

	i2c_stop();

	i2c_start();

	i2c_write(0x82 + 1);

	for (i = 0; i < 31; i++)

	{

		IIC_Buf[i] = i2c_read(1);

	}

	i2c_read(0);

	i2c_stop();

	u32Tmp = IIC_Buf[1] & 0x7F;

	u32Tmp = (u32Tmp << 8) & 0xFF00;

	u32Tmp += IIC_Buf[2];

	tmpX = u32Tmp;

	u32Tmp = IIC_Buf[3] & 0x7F;

	u32Tmp = (u32Tmp << 8) & 0xFF00;

	u32Tmp += IIC_Buf[4];

	tmpY = u32Tmp;

}