I'm connecting the ESP-WROOM-32 module with a USB to TTL dongle (based in CP2102 chip)
The idea is to make a PCB with necessary components to connect 4 only wires between the PCB and the USB TTL, at this moment I have this wiring:
TTL ____ WROOM-32
3V3 ------- 3V3
GND ------ GND
TXD ------- RX0 (IO3)
RXD ------- TX0 (IO1)
__________ EN ------- 3V3
The problem is when I connect the device to putty, it shows me some boot info and then it's disconected, I've added an external power supply and the device start to loop with a Guru Meditation Error
This is the full output:
Code: Select all
ets Jun 8 2016 00:22:57
rst:0x3 (SW_RESET),boot:0x13 (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
6, 13:04:06, 0
:>what?
pp_task_hdl : 3ffc34f0, prio:23, stack:8192
:>what?
:>what?
:06, 0
:>what?
pp_task_hdl : 3ffc3e4xfit0, pr iuao:23, stack:8192
:>what?
:>what?
:>enter uart init
:>what?
uart init wait fifo succeed
:>what?
6, 13:04:06, 0
:>what?
:>what?
:>what?
pp_task_hdl : 3ffc34f0, prio:23, stack:8192
:>what?
:>what?
:>what?
:>what?
:>what?
:>what?
:06, 0
:>what?
:>what?
:>what?
pp_task_hdl : 3ffc3e4xfit0, pr iuao3k9hat?
:>what?
:>what?
h>enter twhat?
:>what?at wait fifo succeed
:>what?
:>what?
:>what?
6, 13:04:06, :
:>w:>what?
:>what?
p_hdl : 3ffc3, prio:23, stack::>what?
:>w:>what?
:>what?
:>what?
:>wh
:>what?
:>what?>what?
:06, 0
:>what?
:>what?
:>what?
:>what?
:>what?
:>what?
:>what?
ppsk_hdl : ctp3k9hawhat?
?
:>what?
:>what?
:>wh>enter awhat?at tsucceed
:>w:>what?
:>w6, 13:04:06, :
:>what?
:>w:
:>what?
h_ 3, prio:23, stack::>what?
:>what?
:>what?
:>what?
:>t?
:>what?
:>what?
:>what?
:>what?
:
:>t?
:>what?
:at?
:>what?
:06, 0
:>what?
:>what?
:>what?
:>what?
:>w:>what?
:>w:>whawhat?
?p : ctp3kw?
:>whawhat?
at?
:>what?
h awhat?td
:>what?
:>w:>t6, 13:04, :
:>what?
:>wh
:>what?
:>w:
:>t?
:>what?
h_ 3, pri3, s>whawhat?
?
:>what?
:>what?
:>w:>t?
:>what?
:>what?
:>what?
:>what?
:awhat?>what?
:
:>what?
:
:>what?
:at?
:>what?
:>what?
:>what?
:06, hawhat?
?
:>what?
:>whawhat?
:>whawhat?
hat?
:>what?
:>w?p3kw?
:>what?
:>w?
:>Guru Meditation Error of type InstrFetchProhibited occured on core 0. Except ion was unhandled.
Register dump:
PC : 00000000 PS : 00060030 A0 : 800f990d A1 : 3ffc44 c0
A2 : 0000003f A3 : 00000000 A4 : 00000000 A5 : 3ffc3b 8c
A6 : 3ffc3b60 A7 : 00000001 A8 : 800f977c A9 : 000000 00
A10 : 00060023 A11 : 3ffc4500 A12 : 00000008 A13 : ffffff ff
A14 : 00000000 A15 : fffffffd SAR : 0000001e EXCCAUSE: 000000 14
EXCVADDR: 00000000 LBEG : 4000c2e0 LEND : 4000c2f6 LCOUNT : ffffff ff
The TTL device I'm using is this: https://www.ebay.com/itm/5PIN-CP2102-Mo ... 1782875777