which new "esp" 8 pin ic is this on the new esp32 modul? ;-)

[rudi ;-)]

we are in contact with john:

x0.jpg (117.57 KiB) Viewed 13289 times

x1.jpg (118.37 KiB) Viewed 13289 times

i have warned all people in this way.
we will close all contacts after this weekend
if we get no datasheet

end of story jeroen!

[rudi ;-)]

if pycom want wait longer time - it is the problem of pycom

we do not longer wait

all people knows now:

if the datasheet is not here at this weekend
we close this chapter and you will loose us.

we wait now near 3/4 year for this!

[rudi ;-)]

i talk from germany and here is now 12:36 PM saturday
you have exactly 36 h for this not longer

If you are not responsible for it, hand it over.

But john has the same knowledge.
This weekend - not longer.

I wait no longer time for your promissing on things.

I am now creating facts - which are useful to us all in the future,
Believe me this - either way - then this is finally settled.

and i will not more post here in this theme until this is clarified

[rudi ;-)]

The puzzle becomes more complete


CONNECTING
Taken from the ESP32 technical reference manual

0_pSRAM-ESP-tech_ref.jpg (63.07 KiB) Viewed 13129 times

POWER-UP INITIALIZATION
Taken from the Lyontek Datasheet: LY68S3200SL and is of the same kind in Initial to ESP-pSRAM32 (2017.01 V1.0 Initial release)

1_pSRAM-Ly-powerup.jpg (106.05 KiB) Viewed 13129 times

SPI READ and WRITE
Taken from the Lyontek Datasheet: LY68S3200SL and is of the same kind in Initial to ESP-pSRAM32 (2017.01 V1.0 Initial release)
with one difference, the 0x02 CMD for write is right in the Lyontek Pic

2_pSRAM-Ly-SPI_read_write.jpg (169.8 KiB) Viewed 13129 times

feel free to append your information to handle the pSRAM or compare with the free available datasheet of LY68S3200SL, this helped me now to know, that there is a POWER-UP INITIALIZATION need and a HIGH CLK for Reset and Ready need - the information was free available. the datasheet upload is on the follow post, cause only 3 attachments allowed.

[rudi ;-)]

file attached

LY68S3200_1.2.pdf

pSRAM Lyontek 32MBit 1.8V

(591.3 KiB) Downloaded 835 times

edit1: an important note on sharing CLK.

edit2: make it work is by using a separate clock line

btw:

LY68L6400_0.3.pdf

pSRAM Lyontek 64MBit 3.3V

(522.6 KiB) Downloaded 820 times

LY68S6400_0.2.pdf

pSRAM Lyontek 64MBit 1.8V

(522.31 KiB) Downloaded 802 times

[rudi ;-)]

...........it's RAM, so if any, you do not have pages as such,........

...
简介：
本工程主要演示psram的初始化以及读写操作
注意事项：
psram进行读写操作软件应用层面需要做原子保护
...

Code: Select all

//32KBytes for each page, totally 128 pages, that is 4MBytes.
cache_sram_mmu_set( 0, 0, 0x3f800000, 0, 32, 128 );

without an comment

have a nice sunday

Code: Select all

/* Timer group-hardware timer example
   This example code is in the Public Domain (or CC0 licensed, at your option.)
   Unless required by applicable law or agreed to in writing, this
   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
   CONDITIONS OF ANY KIND, either express or implied.
*/
#include "esp_types.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "psram.h"

#define TEST_DATA_LEN           1024
#define PSRAM_START_ADR         (0x3F800000)        //0x3F800000 is psram start address

#define mutex_t                 xSemaphoreHandle
mutex_t psram_mem_mutex         = NULL;

uint8_t inRam0[TEST_DATA_LEN]   = {0};
uint8_t inRam1[TEST_DATA_LEN]   = {0};

int  mutex_init(mutex_t *pxMutex);
void mutex_lock(mutex_t *pxMutex);
void mutex_unlock(mutex_t *pxMutex);

/** Create a new mutex
 * @param mutex pointer to the mutex to create
 * @return 0: successed;1:failed;
 */
int mutex_init(mutex_t *pxMutex)
{
    int xReturn = -1;
    *pxMutex = xSemaphoreCreateMutex();
    if (*pxMutex != NULL) {
        xReturn = 0;
    }
    return xReturn;
}

/** Lock a mutex
 * @param mutex the mutex to lock
 */
void mutex_lock(mutex_t *pxMutex)
{
    while (xSemaphoreTake(*pxMutex, portMAX_DELAY) != pdPASS);
}

/** Unlock a mutex
 * @param mutex the mutex to unlock
 */
void mutex_unlock(mutex_t *pxMutex)
{
    xSemaphoreGive(*pxMutex);
}

/** 
 * @brief Memcpy with a cache, atomic protected, speaking, reading and writing
 */
void psram_cache_memcpy(uint8_t *dst, uint8_t *src, uint16_t len)
{
    if(psram_mem_mutex == NULL)
    {
        mutex_init(&psram_mem_mutex);
    }
    mutex_lock(&psram_mem_mutex);
    memcpy(dst, src, len);
    mutex_unlock(&psram_mem_mutex);
}

/** 
 * @brief Memset with a cache, atomic protected, speaking, reading and writing
 */
void psram_cache_memset(uint8_t *addr, uint8_t c, uint32_t len)
{
    if(psram_mem_mutex == NULL)
    {
        mutex_init(&psram_mem_mutex);
    }
    mutex_lock(&psram_mem_mutex);
    memset(addr, c, len);
    mutex_unlock(&psram_mem_mutex);
}

/**
 * @brief Print multiple bytes
 */
void printfByteS(uint8_t *indata, uint16_t len)
{
    int i = 0;
    for(; i < len ; i++)
    {
        printf("%02X", indata[i]);
    }
    printf("\n");
}

/**
 * @brief psram test task
 */
void psram_test_task()
{    
    uint8_t *psram_buf_ptr = (uint8_t*) PSRAM_START_ADR;
    printf("*****************psram demo start*****************\n");
    psram_enable(PSRAM_CACHE_F40M_S40M);
    
    psram_cache_memset(psram_buf_ptr, 0x00, TEST_DATA_LEN);             //clear zero
    
    memset(inRam0, 0x5A, TEST_DATA_LEN);
    memset(inRam1, 0xA5, TEST_DATA_LEN);
    
    printf("1.write psram data\n");
    psram_cache_memcpy(psram_buf_ptr, inRam0,   TEST_DATA_LEN);

    printf("2.read psram data (expect 0x5A)\n");
    printfByteS(psram_buf_ptr, TEST_DATA_LEN);
    
    printf("3.write psram data\n");
    psram_cache_memcpy(psram_buf_ptr, inRam1,   TEST_DATA_LEN);
    
    printf("4.read psram data (expect 0xA5)\n");
    printfByteS(psram_buf_ptr,      TEST_DATA_LEN);
    printf("*****************psram demo end******************\n");
    
    while(1)
    {
        vTaskDelay(100);
    }
}

/**
 * @brief In this test
 */
void app_main()
{
    xTaskCreate(psram_test_task, "psram_test_task", 1024 * 5, NULL, 5, NULL);
}

Code: Select all

#ifndef _PSRAM_H
#define _PSRAM_H
#include "soc/spi_reg.h"
#include "esp_err.h"
#define PSRAM_READ              0x03
#define PSRAM_FAST_READ          0x0B
#define PSRAM_FAST_READ_QUAD      0xEB
#define PSRAM_WRITE             0x02
#define PSRAM_QUAD_WRITE         0x38
#define PSRAM_ENTER_QMODE     0x35
#define PSRAM_EXIT_QMODE      0xF5
#define PSRAM_RESET_EN           0x66
#define PSRAM_RESET             0x99
#define PSRAM_SET_BURST_LEN       0xC0
#define PSRAM_DEVICE_ID          0x9F

typedef enum {
    PSRAM_SPI_1  = 0x1,
    PSRAM_SPI_2,
    PSRAM_SPI_3,
    PSRAM_SPI_MAX ,
} psram_spi_num_t;

typedef enum {
	PSRAM_CACHE_F80M_S40M = 0,//DO NOT USE FOR NOW
	PSRAM_CACHE_F40M_S40M, //SUPPORTED
	PSRAM_CACHE_F80M_S80M, //DO NOT USE FOR NOW
	PSRAM_CACHE_MAX,
} psram_cache_mode_t;

esp_err_t psram_enable(psram_cache_mode_t mode);

#endif

2017 March 28.

28_marz.jpg (16.54 KiB) Viewed 12969 times

[analoglamb]

This is correct, the module is ESP32-WROVER and has external PSRAM.

ESP-WROVER-KIT is the other name for DevKitJ, it's designed to make use of this module.

Hi, Can you show us the schematic of esp32-wrover? We want to know how to connect PSRAM and Flash.

Thanks

[ESP_Sprite]

Rudi: The pages you mention are MMU pages; they're inherent to the way the ESP32 maps the external RAM into main memory and not a property of the RAM chip itself. Also, the routines to do SPI memory copies seemingly slipped through the review process: the code needs to be cleaned up, if anything. Feel free to use it if you want but please do not assume the API is stable; we may change it when we get around to properly reviewing it.


AnalogLamb: The Wrover datasheet isn't public yet (because officially the wrover isn't a product we have announced as for sale yet, from what I can infer) but I can post the schematic. If you need more info, please contact Espressif privately.

[rudi ;-)]

txs jeroen.

btw,
now the espressif psram datasheet official online.
Release 1.0
Date: 2017 June 5

psram_datasheet_online0.jpg (44.94 KiB) Viewed 12907 times

here as attachment

esp-psram32_datasheet_en_official.pdf

official Release V 1.0 (2017-June-5)
Espressif ESP-PSRAM32 Datasheet

(1.83 MiB) Downloaded 755 times

here as link from the docu resource
visit the docu resource

best wishes
rudi

[WiFive]

but I can post the schematic.

This pic doesn't show gpio12 pullup resistor