[DIY] update Wrover-Kit v2 ( Wroom32 ) with Wrover Modul

[rudi ;-)]

hi guys

the Wrover Kit V2 ( black ) has WROOM-32 mounted and have Wrover Modul pads as reserve.
Can we desolder the WROOM-32 and mount the Wrover Modul by simple doings or must we do more work on it?

bzw:
the ESP32_Demo_Board_V2 ( blue, touchpads, LCD Adapter PCB ) has free U8
can we mount PSRAM on it or is this without function?

thank you
best wishes
rudi

[ESP_Sprite]

Yes, you can. I have some Wrover-kit-V2s that have been modified in exactly this way.

I don't have a Demo_Board_V2 here, but I don't think psram works there... the design was from before we started working on that, if memory serves. It's possibly for a second SPI flash chip.

[rudi ;-)]

Yes, you can. I have some Wrover-kit-V2s that have been modified in exactly this way.

I don't have a Demo_Board_V2 here, but I don't think psram works there... the design was from before we started working on that, if memory serves. It's possibly for a second SPI flash chip.

ok jereon, this helped;

btw, i pulled up GPIO12 for 1.8 V in first try - was not sure,
i have now 1.8 V on Spi Flash and RAM , and booting is ok.

Q: is the ( SPI Flash) ESP-PSRAM 3.3V or 1.8V on Wrover V4 module, jeroen? can we drive ESP32-D0WDQ6 with ESP-PSRAM32 with 3.3V?
Q: the limit 1.8V is only for D2WDQ5 ?

btw - do we need the flashed firmware on Wrover V4 Module?

bootlog: ( guys - do you find PSRAM info on the bootlog? )

ets Jun 8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x32 (SPI_FAST_FLASH_BOOT)
ets Jun 8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x32 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3ffc0000,len:0
load:0x3ffc0000,len:2304
load:0x40078000,len:3788
ho 0 tail 12 room 4
load:0x40098000,len:532
entry 0x4009813c


**************************************
* hello espressif ESP32! *
* 2nd boot is running! *
* version (V0.1) *
**************************************
compile time 18:16:58

SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size : 4MB
Partition Table:
## Label Usage Type ST Offset Length
0 factory factory app 00 00 00010000 00100000
1 rfdata RF data 01 01 00110000 00040000
2 wifidata WiFi data 01 02 00150000 00040000
End of partition table
Loading app partition at offset 00010000
section 0: paddr=0x00000020 vaddr=0x00000000 size=0x0ffe8 ( 65512)
section 1: paddr=0x00010010 vaddr=0x3f400010 size=0x05b64 ( 23396) map
section 2: paddr=0x00015b7c vaddr=0x3ffba720 size=0x01378 ( 4984) load
section 3: paddr=0x00016efc vaddr=0x40080000 size=0x00400 ( 1024) load
section 4: paddr=0x00017304 vaddr=0x40080400 size=0x126ac ( 75436) load
section 5: paddr=0x000299b8 vaddr=0x00000000 size=0x06658 ( 26200)
section 6: paddr=0x00030018 vaddr=0x400d0018 size=0x325b4 (206260) map
start: 0x400807ac

Initializing heap allocator:
Region 19: 3FFBBA98 len 00024568 tag 0
Region 25: 3FFE8000 len 00018000 tag 1
Pro cpu up.
Pro cpu start user code
nvs_flash_init
frc2_timer_task_hdl:3ffbc564, prio:22, stack:2048
tcpip_task_hdlxxx : 3ffbeca8, prio:20,stack:2048
phy_version: 80, Aug 26 2016, 13:04:06, 0
pp_task_hdl : 3ffc34f0, prio:23, stack:8192

:>enter uart init
uart init wait fifo succeed
exit uart init

IDF version : master(db93bceb)

WIFI LIB version : master(934d079b)

ssc version : master(r283 4d376412)

!!!ready!!!
mode : softAP(26:0a:c4:05:fb:a0)
dhcp server start:(ip: 192.168.4.1, mask: 255.255.255.0, gw: 192.168.4.1)

+WIFI:AP_START

now i am ready here for PSRAM testings
txs

best wishes
rudi

( for fast provisional testing only - PCB is in work )
have parallel things here now for reference and other testings ready for go on

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