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by WiFive
Thu Mar 26, 2020 1:51 pm
Forum: ESP32 IDF
Topic: UART Config Issue
Replies: 2
Views: 250

Re: UART Config Issue

Probably not calling uart_module_enable
by WiFive
Mon Mar 23, 2020 9:09 am
Forum: General Discussion
Topic: ESP32-WROOM-32D Ground Plane PCB vs. Schematic
Replies: 3
Views: 402

Re: ESP32-WROOM-32D Ground Plane PCB vs. Schematic

The ground pad on the module is a single pad but the recommended ground plane on the host pcb is the divided pad with vias. I think this is for thermal considerations and to prevent solder wicking or pooling.
by WiFive
Sun Mar 15, 2020 3:44 am
Forum: General Discussion
Topic: WROVER-B Flash Config Corrupted In Field
Replies: 5
Views: 1091

Re: WROVER-B Flash Config Corrupted In Field

Suggest that you narrow it down to a partition by selectively reflashing the bad image or doing a binary diff to a working image. Also post the log from a cold boot if it is any different.
by WiFive
Sat Mar 14, 2020 8:54 am
Forum: Hardware
Topic: Issue with programming/flashing ESP32
Replies: 7
Views: 1760

Re: Issue with programming/flashing ESP32

If you get "waiting for download" you're doing the strapping correctly. Could be a problem with the tx of your usb adapter.
by WiFive
Sat Mar 14, 2020 8:45 am
Forum: Hardware
Topic: Disable IO0 read on boot ?
Replies: 1
Views: 940

Re: Disable IO0 read on boot ?

No, but possibly on rev3 chips. There is a new UART_DOWNLOAD_DIS but not sure whether it will ignore IO0 and always boot the application or do something else like halt.
by WiFive
Sat Mar 14, 2020 8:34 am
Forum: General Discussion
Topic: WROVER-B Flash Config Corrupted In Field
Replies: 5
Views: 1091

Re: WROVER-B Flash Config Corrupted In Field

boot:0x3b
For wrover-b it should be booting in 3.3v mode but the strapping pins are showing 1.8v mode, did you set efuse to fix this?
by WiFive
Wed Mar 11, 2020 3:41 am
Forum: ESP32 IDF
Topic: ESP-IDF on ESP32-D0WDQ6 or ESP32-WROOM with 3 UART and 1 I2C
Replies: 4
Views: 698

Re: ESP-IDF on ESP32-D0WDQ6 or ESP32-WROOM with 3 UART and 1 I2C

You do really need the external flash because there is no internal flash.
by WiFive
Wed Mar 11, 2020 3:39 am
Forum: General Discussion
Topic: deep sleep and light sleep
Replies: 1
Views: 564

Re: deep sleep and light sleep

Deep sleep is shutdown/restart but light sleep is suspend/resume.

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