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by WiFive
Mon May 22, 2017 7:25 pm
Forum: General Discussion
Topic: question about the oscillators
Replies: 3
Views: 23

Re: question about the oscillators

I'm not sure how you would remove an internal oscillator ;)
by WiFive
Mon May 22, 2017 1:44 pm
Forum: ESP32 SDK
Topic: BLE and WIFI simultaneously
Replies: 1
Views: 21

Re: BLE and WIFI simultaneously

Yes, there are some beacon scanner project on github that send scan result over wifi
by WiFive
Mon May 22, 2017 1:26 pm
Forum: ESP32 SDK
Topic: Why does get_rtc_time_us() truncate the result to uint32_t?
Replies: 20
Views: 224

Re: Why does get_rtc_time_us() truncate the result to uint32_t?

Sorry was calling system_get_time which has uint32_t return type along with the other system_ functions at the bottom of time.c. Also my local IDF was borked somehow and wasn't really building latest master even though it seemed so in git. For example had a components/soc folder in IDF directory but...
by WiFive
Mon May 22, 2017 3:28 am
Forum: ESP32 SDK
Topic: Why does get_rtc_time_us() truncate the result to uint32_t?
Replies: 20
Views: 224

Re: Why does get_rtc_time_us() truncate the result to uint32_t?

Also s_microseconds rolls over at 32-bit.

Code: Select all

RTC Time: 4330469173
FRC1 Time: 4260909211
RTC Time: 4391418173
FRC1 Time: 25941852
by WiFive
Sun May 21, 2017 11:59 pm
Forum: General Discussion
Topic: button common ground on ESP32 shuts MCU off
Replies: 2
Views: 27

Re: button common ground on ESP32 shuts MCU off

Connect the ground first, connect one button wire at a time. When does it reset and what gpio pin?
by WiFive
Sun May 21, 2017 11:07 pm
Forum: ESP32 SDK
Topic: Why does get_rtc_time_us() truncate the result to uint32_t?
Replies: 20
Views: 224

Re: Why does get_rtc_time_us() truncate the result to uint32_t?

RTC seems to gain 0.8-1.1sec/min on FRC1 in normal runtime mode.
by WiFive
Sun May 21, 2017 7:00 pm
Forum: General Discussion
Topic: D0WD D2WD WROOM-32 WROVER deep sleep SPI Flash pSRAM
Replies: 3
Views: 58

Re: D0WD D2WD WROOM-32 WROVER deep sleep SPI Flash pSRAM

Efuse for 1.8V is not set in factory, at least for now. If this is changed in the future, we will add a note to the datasheet. Oh oops. SPI pin remap fuses are set but not vdd_sdio? Does that mean internal flash is connected to internal 1.8v ldo upstream of vdd_sdio pad? Or is it mandatory to opera...
by WiFive
Sun May 21, 2017 3:20 pm
Forum: General Discussion
Topic: D0WD D2WD WROOM-32 WROVER deep sleep SPI Flash pSRAM
Replies: 3
Views: 58

Re: D0WD D2WD WROOM-32 WROVER deep sleep SPI Flash pSRAM

I not a esp_ guy but I can guess a) deep sleep with 5µA is possible if we set VDD_SDIO to 1.8V right? Yes deep sleep vdd_sdio is off so voltage shouldn't matter b) ESP32-D0WD is driven by 3.3V and can setup VDD_SDIO to 1.8V and 3.3V right? Yes c) ESP32-D2WD is driven by 3.3V and intern Flash is driv...
by WiFive
Sun May 21, 2017 12:37 pm
Forum: ESP32 SDK
Topic: Why does get_rtc_time_us() truncate the result to uint32_t?
Replies: 20
Views: 224

Re: Why does get_rtc_time_us() truncate the result to uint32_t?

Got it. Will it be possible to call from a wake stub?

Now if we are using FRC1 for timekeeping during runtime we probably don't need to be doing calibrations but should we sync RTC counter to FRC1 before deepsleep?

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