HELP: ESP32-WROVER-DEV + SSD1322

[holefrog]

Hi,
I am working on ESP32-WROVER-DEV + SSD1322.
So far I have two questions:

1. Booting
   When powered up, it won't start. You must press the EN/RST button to boot it up; otherwise, it will remain in 'Terminal ready' status.

UART result:

picocom v3.1

port is        : /dev/ttyUSB0
flowcontrol    : none
baudrate is    : 115200
parity is      : none
databits are   : 8
stopbits are   : 1
escape is      : C-a
local echo is  : no
noinit is      : no
noreset is     : no
hangup is      : no
nolock is      : no
send_cmd is    : sz -vv
receive_cmd is : rz -vv -E
imap is        : 
omap is        : 
emap is        : crcrlf,delbs,
logfile is     : none
initstring     : none
exit_after is  : not set
exit is        : no

Type [C-a] [C-h] to see available commands
Terminal ready

2. Display
   It can correctly display 'Analog VU Meter and Remaining Time.' However, when choosing 'Spectrum Analyzer and Progress Bar and Remaining Time,' there is no Spectrum Analyzer.
   
   

[nonzhe]

How does wrover connect to SD1322? need to connect both Reset and DC pin?

[holefrog]

In NVS, "display_config"

SPI,width=256,height=64,reset=23,cs=5,speed=8000000,driver=SSD1322

In NVS, "spi_config":

data=19,clk=18,dc=22

[philippe44]

How is your configuration of display in the LMS's players settings? Re reset issue, it feels like the UART connection locks the EN pin

[holefrog]

Here is LMS

[holefrog]

"For reset: it feels like the UART connection locks the EN pin"
What can I do to fix the problem? I am using Ali-Express ESP32-WROVER-CAM, the pin outs is below:

[philippe44]

That's likely the UART connection to using DTR or CTS (sorry I don't remember) that might miss a pull up.

[philippe44]

Re display, sorry I meant what's in "basic settings"

[holefrog]

Re display, sorry I meant what's in "basic settings"

Sorry to waste your time on this issue.
I do not know what have happened. But now, when I chose 'Spectrum Analyzer and Progress Bar and Remaining Time,' it can display the Spectrum correctly. It might be my browser's issue last time.

[holefrog]

That's likely the UART connection to using DTR or CTS (sorry I don't remember) that might miss a pull up.
Is there any way to solve this problem, such as connecting the EN to VCC?

[philippe44]

EN too Vcc via a resistor of 10k min maybe, unless your uart board does a pulldown.

[holefrog]

The EN is 3.3V. When connecting EN to GND, it will reset. It is a little bit strange. When it arrived, it could boot somehow (I can see a loop running from terminal) when powered on. Get BlueMail for Android<https://bluemail.me> On Nov 7, 2023, at 1:50 p.m., philippe44 ***@***.******@***.***>> wrote: EN too Vcc via a resistor of 10k min maybe, unless your uart board does a pulldown.

[philippe44]

So I don't know what happens between that board and your usb-to-uart. Probably a scope would be necessary.

[holefrog]

I have a very simple logical analyzer. What should I look for? Regards, Get BlueMail for Android<https://bluemail.me> On Nov 7, 2023, at 3:18 p.m., philippe44 ***@***.******@***.***>> wrote: So I don't know what happens between that board and your usb-to-uart. Probably a scope would be necessary.

[philippe44]

Just try to see what happens on EN when you start and reboot

[holefrog]

Here is the EN pin output:
It will keep high after power on.

[philippe44]

I'm getting a bit confused now, can we summarize the issue? When you power on the board, it would not start, until you reset it. Does it happen regardless of the fact that a UART is connected or not?

[holefrog]

Sorry, my bad. Yes.You correctly descripted the issue: When power on the board, it would not start, until press reset. It happens regardless of the fact that a UART is connected or not. On Nov 7, 2023, at 6:09 p.m., philippe44 ***@***.******@***.***>> wrote: I'm getting a bit confused now, can we summarize the issue? When you power on the board, it would not start, until you reset. Does it happen regardless of the fact that a UART is connected or not?

[philippe44]

ok, so I was going on the wrong track. It's a board problem then

[philippe44]

And I should add that usually it's the capacitor on the EN signal that is not large enough (or I should say the RC) which means the EN is released while Vcc is not stable enough and the chip cannot boot. Well-known problem and others (including myself on SqueezeAMP) had the issue.

[holefrog]

Hi, philippe44. I apologize for taking up so much of your time and effort with the well-known problem. Following your instructions, I connected a 10uF capacitor to EN and GND. Now, it can boot when powered on. Thank you so much.