/*
 * @Author: wujunchao wujunchao@wuxismart.com
 * @Date: 2025-03-17 14:38:34
 * @LastEditors: wujunchao wujunchao@wuxismart.com
 * @LastEditTime: 2025-03-18 09:18:55
 * @FilePath: \signal_generator\App\APP_WU\Src\eeprom_spi.c
 * @Description: 这是默认设置,请设置`customMade`, 打开koroFileHeader查看配置 进行设置: https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
 */
#include "eeprom_spi.h"


void eeprom_spi_init(void)
{
    EEPROM_CS_H;    // CS 初始化高（手册中描述：S拉低时片选）
    EEPROM_SCLK_L;  // CLK 初始化低
    EEPROM_WR_H;    // 不使用硬件保护
}

void eeprom_spi_writebyte(uint8_t wrt_data)
{
    // EEPROM_CS_L;
    // wu_delay_us(100);

    uint8_t i = 0;
	uint8_t temp = 0;
	for(i = 0; i < 8; i++)
	{
		temp = ((wrt_data&0x80)==0x80)? 1:0;

		wrt_data = wrt_data << 1;

		EEPROM_SCLK_L; //CPOL=0

		if(temp)
		{
			EEPROM_MOSI_H;
		}
		else
		{
			EEPROM_MOSI_L;
		}

		wu_delay_us(10);       // 空等待

		EEPROM_SCLK_H; //CPHA=0

		wu_delay_us(10);       // 空等待
	}

	EEPROM_SCLK_L; 

    //EEPROM_CS_H;
}

uint8_t eeprom_spi_readbyte(void)
{
    // EEPROM_CS_L;
    // wu_delay_us(100);

    uint8_t i = 0;
	uint8_t read_data = 0xFF;
	for(i = 0; i < 8; i++) 
	{
		read_data = read_data << 1;
		EEPROM_SCLK_L;
		wu_delay_us(10);       // 空等待
		EEPROM_SCLK_H;
		wu_delay_us(10);       // 空等待
		if(EEPROM_MISO == 1) 
		{
			read_data = read_data + 1; 
		} 
	}
	EEPROM_SCLK_L;
	
    // EEPROM_CS_H;

	return read_data;
}

uint8_t SPI_WriteReadByte(uint8_t data)
{
	// EEPROM_CS_L;
    // delay_cnt(0xff);

	uint16_t bit_ctr;
   	for(bit_ctr=0;bit_ctr<8;bit_ctr++) 
   	{
		if(data & 0x80) 
		{
			EEPROM_MOSI_H;
		} 		        
		else 
		{
			EEPROM_MOSI_L;
		}
		
		data = (data << 1);           
		EEPROM_SCLK_H; 
		delay_cnt(0xff);
		if(EEPROM_MISO)
		{
			data |= 0x01;
		} 
		EEPROM_SCLK_L; 
		delay_cnt(0xff);           		 
   	}

	//EEPROM_CS_H;

	return(data); 
}

void eeprom_writedata(uint8_t addr[3], uint8_t txd)
{
	EEPROM_CS_L;
    delay_cnt(0xff);
    eeprom_spi_writebyte(WRITE_ENABLE);
	delay_cnt(0xff);
    EEPROM_CS_H;

	EEPROM_CS_L;
    delay_cnt(0xff);

    eeprom_spi_writebyte(WRITE_MEMORY);
    eeprom_spi_writebyte(addr[0]);
    eeprom_spi_writebyte(addr[1]);
    eeprom_spi_writebyte(addr[2]);
    eeprom_spi_writebyte(txd);

    delay_cnt(0xff);
    EEPROM_CS_H;
}

uint8_t eeprom_readdata(uint8_t addr[3])
{
	uint8_t rxd = 0;
	EEPROM_CS_L;
    delay_cnt(0xff);
    eeprom_spi_writebyte(WRITE_ENABLE);
	delay_cnt(0xff);
    EEPROM_CS_H;

	EEPROM_CS_L;
    delay_cnt(0xff);

    eeprom_spi_writebyte(READ_MEMORY);
    eeprom_spi_writebyte(addr[0]);
    eeprom_spi_writebyte(addr[1]);
    eeprom_spi_writebyte(addr[2]);
	rxd = eeprom_spi_readbyte();
    
   	delay_cnt(0xff);
    EEPROM_CS_H;
	
	return rxd;
}