Search found 13 matches

by hardware_engineer
Wed Feb 21, 2024 10:57 pm
Forum: Hardware
Topic: ESP32-S3 Disable Firmware Download
Replies: 7
Views: 7027

Re: ESP32-S3 Disable Firmware Download

I'm getting back to this topic again.

If we disable the Download Mode permanently, can we access the UART for debugging purposes if there's some field return that we want to investigate?
by hardware_engineer
Sun Feb 04, 2024 10:21 pm
Forum: Hardware
Topic: State of GPIO IO47 and IO48 during BOOT MODE
Replies: 0
Views: 579

State of GPIO IO47 and IO48 during BOOT MODE

Hello, I wanted to ask what would be the state of the GPIOs particularly IO47 and IO48 when in BOOT_MODE? I'm using ESP32-S3-WROOM-1U-N8R8. Thanks! I looked over the datasheet and hardware design guidelines but it only mentions the state of the pins "At reset" and "After Reset".
by hardware_engineer
Thu Dec 21, 2023 7:33 pm
Forum: Hardware
Topic: ESP32-S3 Disable Firmware Download
Replies: 7
Views: 7027

Re: ESP32-S3 Disable Firmware Download

No :) I'm only asking because you can also permanently disable the strapping pin's (GPIO0) "enter download mode" functionality, if you're after disabling download mode for security reasons; in that case, you'd also have to disable the USB/JTAG interface. Depends on what you want to protect against....
by hardware_engineer
Thu Dec 21, 2023 1:14 am
Forum: Hardware
Topic: ESP32-S3 Disable Firmware Download
Replies: 7
Views: 7027

Re: ESP32-S3 Disable Firmware Download

Yes, I still wanted to have a control to enable/disable the boot mode function.
Do you see any issues in this implementation?

I agree that this is an overkill. Do you have any better/simpler solution that you can think of?
by hardware_engineer
Wed Dec 20, 2023 10:51 am
Forum: Hardware
Topic: ESP32-S3 Disable Firmware Download
Replies: 7
Views: 7027

Re: ESP32-S3 Disable Firmware Download

the 10k after the transistors are 0 ohms.
by hardware_engineer
Wed Dec 20, 2023 10:42 am
Forum: Hardware
Topic: ESP32-S3 Disable Firmware Download
Replies: 7
Views: 7027

ESP32-S3 Disable Firmware Download

Hi, I have an ESP32-S3 DevKitC module. This module has the USB-UART bridge, which I wanted to disable the DTR/RTS signal via hardware to prevent anyone from putting the device in download mode. I was thinking of routing these signals to a tri-state non-inverting buffer and controlling the enable pin...
by hardware_engineer
Tue Dec 05, 2023 1:30 am
Forum: Hardware
Topic: ESP32-S3 WROOM 1U Module Placement
Replies: 1
Views: 6974

ESP32-S3 WROOM 1U Module Placement

Hello, I'm reading the hardware design guide and it shows the proper placement of the module in the baseboard. However, this only shows those modules with internal PCB antenna. Does this placement still apply to modules with an external antenna?
by hardware_engineer
Tue Nov 21, 2023 2:47 am
Forum: Hardware
Topic: LED WS2815 ESP32-S3 drive
Replies: 4
Views: 6690

LED WS2815 ESP32-S3 drive

Hello, I wanted to drive two LED strips of WS2815 (each around 36 to 40pcs). I wanted to know if I can wire directly the GPIO output of the ESP32-S3 to the data input of the LED strips?
by hardware_engineer
Mon Nov 06, 2023 8:23 pm
Forum: Hardware
Topic: ESP32-S3 WROOM 1U USB-C host hardware design
Replies: 8
Views: 2997

Re: ESP32-S3 WROOM 1U USB-C host hardware design

Thanks for the confirmation. Would you please clarify on this point? "It is possible for two or more clients to simultaneously communicate with the same device as long as they are not communicating to the same interface. However, multiple clients can simultaneously communicate with the same device’s...
by hardware_engineer
Mon Nov 06, 2023 12:57 am
Forum: Hardware
Topic: ESP32-S3 WROOM 1U USB-C host hardware design
Replies: 8
Views: 2997

Re: ESP32-S3 WROOM 1U USB-C host hardware design

thanks for replying. How about I use a USB hub controller that would support 2 devices connection (like Microchip USB2512)? Would ESP32-S3 have a problem with that?