I've designed a custom PCB which uses the ESP32-WROOM-32 module. I'm using arduino to help validate the board, and I am able to run very simple programs on it successfully (ex. serial echo, Blink, etc...)
Where I'm having trouble is running any Wifi programs on it. For example, when I load the Wifi Scan example program, I receive the following output.
rst:0x1 (POWERON_RESET),boot:0x13 (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:2 load:0x3fff0018,len:4 load:0x3fff001c,len:1216 ho 0 tail 12 room 4 load:0x40078000,len:10864 load:0x40080400,len:6404 entry 0x400806b8 [W][esp32-hal-psram.c:30] psramInit(): PSRAM init failed! [D][WiFiGeneric.cpp:332] _eventCallback(): Event: 0 - WIFI_READY [D][WiFiGeneric.cpp:332] _eventCallback(): Event: 2 - STA_START
Most times it just stops here, sometimes it will restart and repeat a few times. Occasionally it will cause a kernel and my Mac will restart.
U1 is the ESP32-WROOM-32 U4 is a CH340C USB to serial chip IC1 is a HT7833 LDO
Lat thing, I've looked at the logic levels on the bootstrapping pins and don't see anything out of the ordinary: GPIO 0: High GPIO 2: Low GPIO 4: Low GPIO 5: High GPIO 12: Low GPIO 15: High
I've been trying to troubleshoot this problem for the past three days and I'm stumped. Any help would be appreciated.