\u6a21\u5757\u578b\u53f7：ESP32\u2011WROOM\u201132UE\u2011MQN4R2 \u4e3b\u63a7\u82af\u7247：ESP32\u2011D0WD\u2011V3（\u53cc\u6838 LX6，\u975e ESP32C3） \u5b58\u50a8\u914d\u7f6e：4MB Flash + 2MB PSRAM \u7f16\u8bd1\u76ee\u6807：esp32<\/p>\n
\u5f88\u591a\u65b0\u624b\u5206\u4e0d\u6e05\u4e24\u8005\u7528\u9014，\u4e00\u53e5\u8bdd\u603b\u7ed3： Flash（4MB）= \u786c\u76d8：\u65ad\u7535\u6570\u636e\u4e0d\u4e22\u5931，\u5b58\u56fa\u4ef6\u3001\u7f51\u9875\u6587\u4ef6\u3001NVS \u914d\u7f6e\u53c2\u6570 PSRAM（2MB）= \u6269\u5c55\u5185\u5b58\u6761：\u65ad\u7535\u6570\u636e\u6e05\u7a7a，\u53ea\u7528\u4e8e\u7a0b\u5e8f\u8fd0\u884c\u65f6\u5927\u7f13\u5b58<\/p>\n
ESP32 \u539f\u751f\u5185\u90e8 SRAM \u4ec5 520KB，\u5904\u7406\u56fe\u7247\u3001HTTP \u5927\u7f13\u51b2\u533a\u6781\u6613\u6ea2\u51fa，PSRAM \u5c31\u662f\u7528\u6765\u89e3\u51b3\u5185\u5b58\u4e0d\u8db3\u7684\u3002<\/p>\n
idf.py menuconfig \u5f00\u542f\u5982\u4e0b\u9009\u9879： Component config \u2192 ESP32\u2011specific \u2192 Support for external SPI RAM<\/p>\n
\u7f16\u8bd1\u6307\u4ee4：<\/p>\n
idf.py set-target esp32
\nidf.py build flash monitor<\/p>\n
\u529f\u80fd：\u6253\u5370\u8bbe\u5907\u5b58\u50a8\u4fe1\u606f\u3001\u6d4b\u8bd5\u5185\u90e8\u5185\u5b58\u6ea2\u51fa\u3001\u6d4b\u8bd5 PSRAM \u8bfb\u5199<\/p>\n
#include <stdio.h>
\n#include <string.h>
\n#include "freertos\/FreeRTOS.h"
\n#include "freertos\/task.h"
\n#include "esp_system.h"
\n#include "heap_caps.h"
\n#include "nvs_flash.h"
\n#include "spi_flash.h"<\/p>\n
\/\/ \u6253\u5370Flash\u3001\u5185\u90e8RAM\u3001PSRAM\u4fe1\u606f
\nvoid print_mem_info(void)
\n{
\n size_t int_free = heap_caps_get_free_size(MALLOC_CAP_INTERNAL);
\n size_t psram_free = heap_caps_get_free_size(MALLOC_CAP_SPIRAM);<\/p>\n
printf("========== \u5b58\u50a8\u4fe1\u606f ==========\\\\n");
\n printf("\u5185\u90e8SRAM\u7a7a\u95f2：%d KB\\\\n", (int)(int_free \/ 1024));
\n printf("PSRAM\u7a7a\u95f2：%d KB\\\\n", (int)(psram_free \/ 1024));<\/p>\n
uint32_t flash_size = spi_flash_get_chip_size();
\n printf("Flash\u603b\u5bb9\u91cf：%d MB\\\\n", (int)(flash_size \/ 1024 \/ 1024));
\n printf("==============================\\\\n");
\n}<\/p>\n
void psram_test_task(void *arg)
\n{
\n print_mem_info();<\/p>\n
\/\/ 1.\u6d4b\u8bd5：\u5185\u90e8RAM\u7533\u8bf71MB\u5185\u5b58（\u5fc5\u7136\u5931\u8d25）
\n uint8_t *int_buf = malloc(1024 * 1024);
\n if (int_buf == NULL)
\n {
\n printf("\u3010\u6d4b\u8bd5\u901a\u8fc7\u3011\u5185\u90e8RAM\u4e0d\u8db3，1MB\u7533\u8bf7\u5931\u8d25\\\\n");
\n }
\n else
\n {
\n free(int_buf);
\n }<\/p>\n
\/\/ 2.\u6d4b\u8bd5：PSRAM\u7533\u8bf71MB\u5927\u7f13\u5b58（\u6b63\u5e38\u6210\u529f）
\n uint8_t *psram_buf = heap_caps_malloc(1024 * 1024, MALLOC_CAP_SPIRAM);
\n if (psram_buf != NULL)
\n {
\n printf("\u3010\u6d4b\u8bd5\u901a\u8fc7\u3011PSRAM 1MB\u5185\u5b58\u7533\u8bf7\u6210\u529f\\\\n");<\/p>\n
\/\/ \u8bfb\u5199\u6d4b\u8bd5
\n memset(psram_buf, 0x66, 1024 * 1024);
\n if (psram_buf[0] == 0x66)
\n {
\n printf("\u3010\u6d4b\u8bd5\u901a\u8fc7\u3011PSRAM\u8bfb\u5199\u6b63\u5e38\\\\n");
\n }<\/p>\n
heap_caps_free(psram_buf);
\n printf("PSRAM\u5185\u5b58\u5df2\u91ca\u653e\\\\n");
\n }
\n else
\n {
\n printf("\u3010\u62a5\u9519\u3011\u672a\u5f00\u542fPSRAM\u914d\u7f6e！\\\\n");
\n }<\/p>\n
while (1)
\n {
\n vTaskDelay(pdMS_TO_TICKS(3000));
\n }
\n}<\/p>\n
void app_main(void)
\n{
\n \/\/ \u521d\u59cb\u5316NVS\u95ea\u5b58
\n esp_err_t ret = nvs_flash_init();
\n if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND)
\n {
\n nvs_flash_erase();
\n nvs_flash_init();
\n }<\/p>\n
\/\/ \u521b\u5efa\u6d4b\u8bd5\u4efb\u52a1
\n xTaskCreate(psram_test_task, "psram_test", 4096, NULL, 5, NULL);
\n}<\/p>\n
========== \u5b58\u50a8\u4fe1\u606f ==========
\n\u5185\u90e8SRAM\u7a7a\u95f2：380 KB
\nPSRAM\u7a7a\u95f2：1950 KB
\nFlash\u603b\u5bb9\u91cf：4 MB
\n==============================
\n\u3010\u6d4b\u8bd5\u901a\u8fc7\u3011\u5185\u90e8RAM\u4e0d\u8db3，1MB\u7533\u8bf7\u5931\u8d25
\n\u3010\u6d4b\u8bd5\u901a\u8fc7\u3011PSRAM 1MB\u5185\u5b58\u7533\u8bf7\u6210\u529f
\n\u3010\u6d4b\u8bd5\u901a\u8fc7\u3011PSRAM\u8bfb\u5199\u6b63\u5e38
\nPSRAM\u5185\u5b58\u5df2\u91ca\u653e<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u3001\u786c\u4ef6\u8bf4\u660e\u6a21\u5757\u578b\u53f7：ESP32\u2011WROOM\u201132UE\u2011MQN4R2 \u4e3b\u63a7\u82af\u7247：ESP32\u2011D0WD\u2011V3（\u53cc\u6838 LX6，\u975e ESP32C3） \u5b58\u50a8\u914d\u7f6e：4MB Flash 2MB PSRAM \u7f16\u8bd1\u76ee\u6807：esp32\u4e8c\u3001Flash \u4e0e PSRAM \u6838\u5fc3\u533a\u522b\u5f88\u591a\u65b0\u624b\u5206\u4e0d\u6e05\u4e24\u8005\u7528\u9014，\u4e00\u53e5\u8bdd\u603b\u7ed3： Flash（4MB） \u786c\u76d8&#x<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[220],"topic":[],"class_list":["post-99877","post","type-post","status-publish","format-standard","hentry","category-server","tag-220"],"yoast_head":"\n