Search found 60 matches

by iosixllc
Sun Nov 12, 2017 9:10 am
Forum: ESP32 SDK
Topic: Read Issue with UART 2
Replies: 7
Views: 897

Re: Read Issue with UART 2

I was able to solve this by changing rx_flow_ctrl_thresh from 122 to 40.
by iosixllc
Mon Nov 06, 2017 7:40 am
Forum: ESP32 HDK
Topic: Issues flashing D2WD/flash status meaning?
Replies: 10
Views: 435

Re: Issues flashing D2WD/flash status meaning?

This update is working well. However, it seems to require reflash of the bootloader. Any suggestions for OTA? Should I just re-write the bootloader in the field (seems risky)?
by iosixllc
Mon Nov 06, 2017 4:53 am
Forum: ESP32 HDK
Topic: Issues flashing D2WD/flash status meaning?
Replies: 10
Views: 435

Re: Issues flashing D2WD/flash status meaning?

I'm suspecting the VSDIO line, as all of these issues started when we moved to 1.8V from 3.3V. Can you elaborate on what this means? Unfortunately, if you had MTDI strapped to 3.3V for an extended period, the flash itself may be damaged. I have older devices that ran at 3.3V that starting having is...
by iosixllc
Wed Nov 01, 2017 5:44 pm
Forum: ESP32 HDK
Topic: Issues flashing D2WD/flash status meaning?
Replies: 10
Views: 435

Re: Issues flashing D2WD/flash status meaning?

Or should I consider raising the flash voltage to 3.3V for erase/flashing operations? I am noticing some dirty erase cycles where I have to do a blank check and re-erase once or twice to actually get a 0xF0000 block cleared.
by iosixllc
Wed Nov 01, 2017 5:42 pm
Forum: ESP32 HDK
Topic: Issues flashing D2WD/flash status meaning?
Replies: 10
Views: 435

Re: Issues flashing D2WD/flash status meaning?

I'm suspecting the VSDIO line, as all of these issues started when we moved to 1.8V from 3.3V. We have close to 100uF on the 3.3V main rail, and the regulator is LT3973EDD-3.3. The VSDIO is using internal LDO and only has the recommended 1uF capacitor attached (very close to the pin) with no other t...
by iosixllc
Wed Nov 01, 2017 5:37 pm
Forum: ESP32 HDK
Topic: Flash erase/write/read test failing
Replies: 3
Views: 235

Re: Flash erase/write/read test failing

Seems so from this log, yes.
by iosixllc
Fri Oct 27, 2017 8:50 pm
Forum: General Discussion
Topic: make flash errors
Replies: 13
Views: 2131

Re: make flash errors

Great, thanks.
by iosixllc
Fri Oct 27, 2017 7:41 pm
Forum: ESP32 HDK
Topic: Flash erase/write/read test failing
Replies: 3
Views: 235

Re: Flash erase/write/read test failing

Also - is there a way I can disable caching of read/write operations to flash or do the partition read/write functions bypass caching?
by iosixllc
Fri Oct 27, 2017 7:15 pm
Forum: ESP32 HDK
Topic: Issues flashing D2WD/flash status meaning?
Replies: 10
Views: 435

Re: Issues flashing D2WD/flash status meaning?

This is at 1.8V, so strapping config is 10K to group from MTDO and 10K to 3.3V from MTDI. Nothing is connected to SD_DATA_0-3, SD_CLK, SD_CMD, GPIO16-17 - everything in the 1.8V domain, except 1uF to ground on VDD_SDIO. Thanks.
by iosixllc
Thu Oct 26, 2017 9:18 am
Forum: ESP32 HDK
Topic: Flash erase/write/read test failing
Replies: 3
Views: 235

Flash erase/write/read test failing

I am running the following code, to perform a regression test on the flash memory, and am getting a lot of errors. Note that before, when we were running VSDIO @ 3.3V (D2WD), the flash was working perfectly. Once we set the fuse for 1.8V, these errors started, and I'm sorry to say we are still seein...