Enablig psram on xiao esp32s3 sense

ocorbonneau · October 25, 2025, 8:29pm

what is the best way to enable psram on the XIAO esp32s3Sense

sivar2311 · October 26, 2025, 1:42am

board = seeed_xiao_esp32s3

See

ocorbonneau · October 26, 2025, 10:27am

wheres does it talk about psram ?

maxgerhardt · October 26, 2025, 10:36am

It links you to the board definition JSON file, which already says

github.com/platformio/platform-espressif32

boards/seeed_xiao_esp32s3.json

3e09ed0c4


      
          {

            "build": {

              "arduino": {

                "ldscript": "esp32s3_out.ld",

                "partitions": "default_8MB.csv",

                "memory_type": "qio_opi"

              },

              "core": "esp32",

              "extra_flags": [

                "-DARDUINO_XIAO_ESP32S3",

                "-DBOARD_HAS_PSRAM",

                "-DARDUINO_USB_MODE=1",

                "-DARDUINO_USB_CDC_ON_BOOT=1",

                "-DARDUINO_RUNNING_CORE=1",

                "-DARDUINO_EVENT_RUNNING_CORE=1"

              ],

              "f_cpu": "240000000L",

              "f_flash": "80000000L",

              "flash_mode": "qio",

              "hwids": [

                [

Meaning that PSRAM is activated automatically and there’s no need to do anything, if you use the right board = seeed_xiao_esp32s3 to begin with.