fast_read_eeprom.c

uint8_t *arr;

void w25q_fast_read(uint32_t addr, uint32_t size)
{
	arr = (uint8_t *)malloc(sizeof(uint8_t)*size);
	uint8_t cmd[3];
	uint8_t trashval;
	cmd[0] = (addr >> 16) & 0xFF;
	cmd[1] = (addr >> 8) & 0xFF;
	cmd[2] = addr & 0xFF;
	
	w25q_ss_pin_drive(LOGIC_LOW);
	spi_transmit(0x0B);
	spi_transmit(cmd[0]);
	spi_transmit(cmd[1]);
	spi_transmit(cmd[2]);
	trashval = spi_transmit(0x00);
	for(int i=0; i<size; i++) {
		arr[i] = spi_transmit(0x00);
	}
	w25q_ss_pin_drive(LOGIC_HIGH);
	while(getstatus());
}

main.c

/*
 * w25q64_readwrite.c
 *
 * Created: 2019-07-28 오후 4:47:14
 * Author : yeong
 */ 
#define	F_CPU 16000000UL
#include <util/delay.h>
#include <avr/io.h>
#include "uart.h"
#include "spi.h"
#include "w25q64.h"

uint8_t wData[0x100];
extern uint8_t *arr;

int main(void)
{
	spi_init();
	uart0_init();

	// CS init
	w25q_ss_pin_init();

	for(int i=0; i<0x100; i++) {
		wData[i] = i;
	}

	erase_block(0);
	_delay_ms(500);
	w25q_page_write(0, wData, 0x100);
	_delay_ms(5);

	w25q_fast_read(0x00, 0x100);
	for(int i=0; i<0x100; i++) {
		printf("%02X:%d\r\n", i, arr[i]);
		_delay_ms(100);		
	}

	while (1) 
	{

	}
}