Search found 52 matches

by kbaud1
Mon Mar 05, 2018 10:06 pm
Forum: General Discussion
Topic: disable external flash on WROOM
Replies: 1
Views: 561

disable external flash on WROOM

Is it possible to send a chip deselect signal to the external flash memory on the WROOM so that some of the GPIO normally used to communicate with the flash chip are available for other purposes?
by kbaud1
Mon Mar 05, 2018 12:55 am
Forum: General Discussion
Topic: ULP access timer peripherals?
Replies: 6
Views: 1689

Re: ULP access timer peripherals?

Or how about the FRC1? Can the ULP access this?
http://esp-idf.readthedocs.io/en/latest ... _get_timev
by kbaud1
Mon Mar 05, 2018 12:48 am
Forum: General Discussion
Topic: ULP access timer peripherals?
Replies: 6
Views: 1689

Re: ULP access timer peripherals?

We are not trying to save power. we just need a clean read of the pins without fear of being preempted by another process. The ULP can do this but without a timer, it is inconsistent. Would it be possible to have a hardware timer output to a pin that the ULP can see? It would then use that as a refe...
by kbaud1
Mon Mar 05, 2018 12:35 am
Forum: General Discussion
Topic: ULP GPIO problems
Replies: 5
Views: 1620

Re: ULP GPIO problems

It is the rev 1 version of the DevkitC.
by kbaud1
Thu Mar 01, 2018 4:29 pm
Forum: General Discussion
Topic: ULP GPIO problems
Replies: 5
Views: 1620

ULP GPIO problems

Here is what I found from trial & error: - RTC bits 0-9 require the following initialization to be used as inputs from the ULP: rtc_gpio_init (IO#) - I don't see why this is required because the function description says "This function must be called when initializing a pad for an analog function." ...
by kbaud1
Thu Mar 01, 2018 3:03 am
Forum: General Discussion
Topic: ULP GPIO access?
Replies: 1
Views: 1277

ULP GPIO access?

This is running on the devkitc (wroom daughterboard). The files can be put in place of the files in the "ulp-example" project found online and built/flashed. (The files have the same names as the files they replace.) #include "soc/rtc_cntl_reg.h" #include "soc/rtc_io_reg.h" #include "soc/soc_ulp.h" ...
by kbaud1
Wed Feb 28, 2018 4:20 pm
Forum: General Discussion
Topic: bluetooth classic support in IDF?
Replies: 1
Views: 800

bluetooth classic support in IDF?

I understand BT classic is slated for SDK 3.1. Any news on when we can expect this? Would be nice to have an example that is as easy as wiring up a HC-05 (a very common BT daughter board) for applications running on the APP processor.
by kbaud1
Tue Feb 27, 2018 1:57 am
Forum: General Discussion
Topic: ULP access timer peripherals?
Replies: 6
Views: 1689

ULP access timer peripherals?

I know the ULP can wake after so many cycles of the 150khz RTC after a "halt". Once the ULP is running, is it able to access the timer peripherals? We have a ULP program that reads an optical encoder into RAM so the main processors can then scoop it up. But the loop rate of the ULP is unstable. With...
by kbaud1
Mon Feb 26, 2018 10:19 pm
Forum: General Discussion
Topic: ULP running at 8mhz?
Replies: 0
Views: 538

ULP running at 8mhz?

See ULP code below: This runs at about 80-120khz. Ideally, it loop consistently and at least 100khz. Ideas? This is part of a project to read rotary encoders. Thank you for your time. #include "soc/rtc_cntl_reg.h" #include "soc/rtc_io_reg.h" #include "soc/soc_ulp.h" // Define constants .set rows, 20...
by kbaud1
Mon Feb 26, 2018 6:21 pm
Forum: General Discussion
Topic: increasing Wi-Fi loop rate
Replies: 0
Views: 462

increasing Wi-Fi loop rate

See code below. I am sending small packets as quick as possible. I know I can increase the overall data rate by sending larger packets. But is there a way to increase the packet (loop?) rate itself? I already maxed the CPU at 240mhz. tried different RTOS tick rates, etc. Don't remember if I tried ch...