M5Stack FIRE, faild to init PSRAM



  • M5Stack FIRE has a PSRAM, but it cannot read the PSRAM's device ID, and external memory test fail with numerous errors.
    Why?

    This is boot log when I try to boot micropython, PSRAM version.
    https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo/wiki/firmwares

    Rebooting...
    ets Jun  8 2016 00:22:57
    
    rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
    configsip: 0, SPIWP:0xee
    clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
    mode:DIO, clock div:1
    load:0x3fff0018,len:4
    load:0x3fff001c,len:4636
    load:0x40078000,len:0
    load:0x40078000,len:13040
    entry 0x40078530
    E (572) cpu_start: Failed to init external RAM!
    abort() was called at PC 0x4008197a on core 0
    0x4008197a: esp_dport_access_int_pause at /home/gombe/bin/esp-idf/components/esp32/dport_access.c:195
    
    
    Backtrace: 0x40094437:0x3ffe3c70 0x4009458f:0x3ffe3c90 0x4008197a:0x3ffe3cb0 0x400792f9:0x3ffe3cd0 0x40078591:0x3ffe3d10 0x40007c31:0x3ffe3eb0 0x4000073d:0x3ffe3f20
    0x4008197a: esp_dport_access_int_pause at /home/gombe/bin/esp-idf/components/esp32/dport_access.c:195
    

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