Search found 3529 matches

by WiFive
Wed Mar 07, 2018 7:20 pm
Forum: ESP-IDF
Topic: SD card on GPIO7..to GPIO11 of ESP-WROOM-32
Replies: 12
Views: 15268

Re: SD card on GPIO7..to GPIO11 of ESP-WROOM-32

No, but you could use another gpio to "activate" pull-up after boot
by WiFive
Wed Mar 07, 2018 3:23 am
Forum: General Discussion
Topic: ESP32 doesn't seem to keep up with UART when using uart_enable_pattern_det_intr
Replies: 2
Views: 7245

Re: ESP32 doesn't seem to keep up with UART when using uart_enable_pattern_det_intr

The buffer count jumps 242 bytes in 30ms when the update frequency is 40ms? Seems like some other driver bug in processing the received data.
by WiFive
Tue Mar 06, 2018 8:55 pm
Forum: General Discussion
Topic: using the SPI flash pins for other things
Replies: 7
Views: 11942

Re: using the SPI flash pins for other things

No, the entire program is not copied to ram and executed. Instead there is a small cache where code from flash gets loaded and executed and this is continually being refreshed.
by WiFive
Tue Mar 06, 2018 6:20 pm
Forum: ESP-IDF
Topic: SD card on GPIO7..to GPIO11 of ESP-WROOM-32
Replies: 12
Views: 15268

Re: SD card on GPIO7..to GPIO11 of ESP-WROOM-32

I'm thinking now that there might be a terrible hack to support SD card on the SPI flash pins, if you don't care about read/write performance. Basically, all the code we need to run a single SD command is placed into IRAM, and we disable flash cache for the duration of the command. Something like t...
by WiFive
Tue Mar 06, 2018 12:08 am
Forum: General Discussion
Topic: esp32 AP DNS server sets a default route, it shouldn't, this breaks my phone
Replies: 3
Views: 6736

Re: esp32 AP DNS server sets a default route, it shouldn't, this breaks my phone

Have you tried clearing the softap gateway address after tcpip_adapter_init?
by WiFive
Mon Mar 05, 2018 11:57 pm
Forum: General Discussion
Topic: disable external flash on WROOM
Replies: 1
Views: 2685

Re: disable external flash on WROOM

Code runs from that flash so you probably shouldn't disable it but you could switch to dio mode
by WiFive
Mon Mar 05, 2018 11:55 pm
Forum: General Discussion
Topic: ULP GPIO problems
Replies: 5
Views: 6482

Re: ULP GPIO problems

There was some problem with devkitc V1 and the auto reset circuit which could be related?
by WiFive
Mon Mar 05, 2018 1:44 am
Forum: General Discussion
Topic: ADC1 operation affecting GPIO27 - chip issue?
Replies: 4
Views: 6222

Re: ADC1 operation affecting GPIO27 - chip issue?

36&39 is a known issue, check eco workaround PDF. Not sure if anyone else has reported 27.