Search found 5 matches

by TerryBarnaby
Wed May 22, 2024 7:44 am
Forum: Hardware
Topic: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up
Replies: 4
Views: 778

Re: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up

Its a great shame so many ESP32 IO pins have weak pull-ups enabled by default. I am producing a low power, battery powered system and some of these lines are driving the gates of MOSFET's to turn on high current devices. It's not nice these power on after a reset. I will have to move those lines to ...
by TerryBarnaby
Tue May 21, 2024 8:42 am
Forum: Hardware
Topic: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up
Replies: 4
Views: 778

Re: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up

Ah, I see the default pullup/pulldowns are defeined in the ESP32 datasheet, not the ESP32-PICO-V3 datasheet.
by TerryBarnaby
Tue May 21, 2024 8:34 am
Forum: Hardware
Topic: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up
Replies: 4
Views: 778

Re: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up

Many thanks.
I will need to use a different pin :(
Is there any info on which pins have pull-ups/pull-downs by default ?
by TerryBarnaby
Thu May 16, 2024 4:30 pm
Forum: Hardware
Topic: ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up
Replies: 4
Views: 778

ESP32-PICO-V3 Pin28 SD2/IO9 appears to have pull-up

Hi, I am just testing a new ESP32-PICO-V3 board that I have designed. It is generally working, but I have an issue with the Pin28 SD2/IO9 line. According to the datasheet this pin is usable as a GPIO line. Indeed it looks like I can drive this as an output. However, it looks like by default when the...
by TerryBarnaby
Wed Feb 27, 2019 4:33 pm
Forum: General Discussion
Topic: ESP_RF_test_tool_v1.1.0: Loading test firmware into FLASH
Replies: 1
Views: 3895

ESP_RF_test_tool_v1.1.0: Loading test firmware into FLASH

Hi, We have developed a board that uses the ESP32_PICO_D4 chip/module. All is working fine with the chip but we now need to go through CE testing. We are trying to use the ESP_RF_test_tool_v1.1.0 and specifically the ESP32_RF_TEST_BIN_V1.4.6_20181019.bin firmware that provides the ability to set the...