esp32 i2c master with w25q128 flash problem

[zcg127]

I'm using the esp-wroom-32 with an external flash model w25q128 for personal use, but following the esp-idf i can not make it work, is anybody can help me ? thanks a lot !
below is my code :

Code: Select all

#include <stdio.h>
#include <stdbool.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "driver/spi_master.h"

#define PIN_NUM_MISO 5
#define PIN_NUM_MOSI 21
#define PIN_NUM_CLK  19
#define PIN_NUM_CS 17


spi_device_handle_t spi;
uint8_t test;

void app_main()
{
  spi_bus_config_t spi_bus=
  {
    .miso_io_num=PIN_NUM_MISO,
    .mosi_io_num=PIN_NUM_MOSI,
    .sclk_io_num=PIN_NUM_CLK,
    .quadwp_io_num=-1,
    .quadhd_io_num=-1,
    .max_transfer_sz = 0 ,
  };
  spi_bus_initialize(HSPI_HOST, &spi_bus, 0);

  spi_device_interface_config_t devcfg=
  {
    .command_bits = 8 ,
    .address_bits = 24 ,
    .dummy_bits = 3 ,
    .duty_cycle_pos = 0 ,
    .clock_speed_hz=10*1000*1000,           //Clock out at 10 MHz
    .mode=0,                                //SPI mode 0
    .spics_io_num=PIN_NUM_CS,               //CS pin
    .queue_size=7,                          //We want to be able to queue 7 transactions at a time
  };
  spi_bus_add_device(HSPI_HOST, &devcfg, &spi);

  spi_transaction_t t ;
  t.addr=0x000000;
  t.cmd =0x90;
  t.length = 56 ;
  t.rx_buffer = &test ;
  t.rxlength = 24 ;

  spi_transaction_ext_t t1 ;
  t1.address_bits = 24 ;
  t1.command_bits = 8 ;
  t1.base = t ;

  spi_device_transmit(spi,&t);
  while(1);
}

best regards
Zhang anderson