188 lines
3.5 KiB
C
188 lines
3.5 KiB
C
/*
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* @Author: wujunchao wujunchao@wuxismart.com
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* @Date: 2025-03-17 14:38:34
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* @LastEditors: wujunchao wujunchao@wuxismart.com
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* @LastEditTime: 2025-03-19 11:08:41
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* @FilePath: \signal_generator\App\APP_WU\Src\eeprom_spi.c
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* @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
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*/
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#include "eeprom_spi.h"
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//使用方法：
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// uint8_t eep_tx = 0x72;
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// uint8_t eep_rx = 0;
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// uint8_t eep_addr[3];
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// uint8_t eep_test_flag = 0;
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// uint8_t eep_status = 0;
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// if(eep_test_flag == 0)
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// {
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// eep_test_flag = 1;
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// eep_addr[0] = 0x00;
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// eep_addr[1] = 0x00;
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// eep_addr[2] = 0x00;
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// eeprom_writedata(eep_addr, eep_tx);
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// eep_rx = eeprom_readdata(eep_addr);
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// }
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// 结果：eep_rx = 0x72
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void eeprom_spi_init(void)
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{
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EEPROM_CS_H; // CS 初始化高（手册中描述：S拉低时片选）
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EEPROM_SCLK_L; // CLK 初始化低
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EEPROM_WR_H; // 不使用硬件保护
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}
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void eeprom_spi_writebyte(uint8_t wrt_data)
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{
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uint8_t i = 0;
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uint8_t temp = 0;
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for(i = 0; i < 8; i++)
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{
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temp = ((wrt_data&0x80)==0x80)? 1:0;
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wrt_data = wrt_data << 1;
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EEPROM_SCLK_L; //CPOL=0
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if(temp)
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{
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EEPROM_MOSI_H;
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}
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else
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{
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EEPROM_MOSI_L;
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}
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wu_delay_us(5); // 空等待
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EEPROM_SCLK_H; //CPHA=0
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wu_delay_us(5); // 空等待
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}
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EEPROM_SCLK_L;
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}
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uint8_t eeprom_spi_readbyte(void)
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{
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uint8_t i = 0;
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uint8_t read_data = 0xFF;
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for(i = 0; i < 8; i++)
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{
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read_data = read_data << 1;
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EEPROM_SCLK_L;
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wu_delay_us(5); // 空等待
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EEPROM_SCLK_H;
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wu_delay_us(5); // 空等待
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if(EEPROM_MISO)
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{
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read_data = read_data + 1;
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}
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}
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EEPROM_SCLK_L;
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return read_data;
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}
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uint8_t SPI_WriteReadByte(uint8_t data)
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{
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uint16_t bit_ctr;
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for(bit_ctr=0;bit_ctr<8;bit_ctr++)
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{
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if(data & 0x80)
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{
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EEPROM_MOSI_H;
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}
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else
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{
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EEPROM_MOSI_L;
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}
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data = (data << 1);
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EEPROM_SCLK_H;
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wu_delay_us(5); // 空等待
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if(EEPROM_MISO)
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{
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data |= 0x01;
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}
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EEPROM_SCLK_L;
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wu_delay_us(5); // 空等待
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}
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return(data);
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}
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void eeprom_writedata(uint8_t addr[3], uint8_t txd)
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{
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uint8_t write_en_flag = 0;
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uint8_t ee_status = 0;
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EEPROM_CS_L;
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delay_cnt(10);
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eeprom_spi_writebyte(WRITE_ENABLE);
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delay_cnt(10);
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EEPROM_CS_H;
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EEPROM_CS_L;
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delay_cnt(10);
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eeprom_spi_writebyte(READ_STATUS);
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ee_status = eeprom_spi_readbyte();
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delay_cnt(10);
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EEPROM_CS_H;
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write_en_flag = ee_status & 0x02;
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if(write_en_flag)
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{
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EEPROM_CS_L;
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delay_cnt(10);
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eeprom_spi_writebyte(WRITE_MEMORY);
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eeprom_spi_writebyte(addr[0]);
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eeprom_spi_writebyte(addr[1]);
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eeprom_spi_writebyte(addr[2]);
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eeprom_spi_writebyte(txd);
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delay_cnt(10);
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EEPROM_CS_H;
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}
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}
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uint8_t eeprom_readdata(uint8_t addr[3])
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{
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uint8_t rxd = 0;
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uint8_t write_en_flag = 0;
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uint8_t ee_status = 0;
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EEPROM_CS_L;
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delay_cnt(10);
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eeprom_spi_writebyte(WRITE_ENABLE);
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delay_cnt(10);
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EEPROM_CS_H;
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EEPROM_CS_L;
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delay_cnt(10);
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eeprom_spi_writebyte(READ_STATUS);
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ee_status = eeprom_spi_readbyte();
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delay_cnt(10);
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EEPROM_CS_H;
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write_en_flag = ee_status & 0x02;
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if(write_en_flag)
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{
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EEPROM_CS_L;
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delay_cnt(10);
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eeprom_spi_writebyte(READ_MEMORY);
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eeprom_spi_writebyte(addr[0]);
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eeprom_spi_writebyte(addr[1]);
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eeprom_spi_writebyte(addr[2]);
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rxd = eeprom_spi_readbyte();
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delay_cnt(10);
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EEPROM_CS_H;
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}
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return rxd;
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}
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