Search found 11 matches

by systemsconnect
Mon Jan 18, 2016 7:51 pm
Forum: ESP8266 SDK
Topic: I2C pins
Replies: 3
Views: 3972

I2C pins

Hi, Is it possible to use GPIO13 and GPIO12 for I2C communications? I'm not sure if it's working on these pins. I'm using a ESP12 board and SDK v1.5.1 . I've changed the SDA pin to 13 and SCL to 12 in i2c_master.h file but no response is received. #define PERIPHS_IO_MUX_GPIO13_U (PERIPHS_IO_MUX + 0x...
by systemsconnect
Tue Mar 24, 2015 6:23 pm
Forum: ESP8266 SDK
Topic: Get RSSI of current station?
Replies: 8
Views: 7237

Re: Get RSSI of current station?

Yes, that would be a really nice feature!
by systemsconnect
Sat Mar 07, 2015 3:38 am
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: Wifi radio not working

Yes, I can confirm it's related to the voltage regulator. Somehow, if the voltage is getting unstable the ESP chip becomes in a state it does not connect anymore. Also, if the voltage is to low the regulator will enable the ESP chip but is does not boot and it draws a very large current (200-300mA) ...
by systemsconnect
Wed Feb 25, 2015 1:16 am
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: Wifi radio not working

The problem still exists! So it's not related to the flash memory addresses.
Somehow it stops connecting to wifi after a short while.
by systemsconnect
Tue Feb 24, 2015 5:17 pm
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: Wifi radio not working

Strangely, the firmware is not writing to flash. I don't know why these addresses get corrupted. It's strange why are they affected after running a while and not from the first run? Apparently, somehow the firmware makes something corrupt during runtime.
by systemsconnect
Fri Feb 20, 2015 11:41 pm
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: ADC damages Wifi radio?

OK, that works! Many thanks. It does somehow get corrupted, what's wrong with my firmware?

Please, can you explain why these address get corrupted and why did you think this address causes the problem?
by systemsconnect
Thu Feb 19, 2015 9:30 pm
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: ADC damages Wifi radio?

OK, it does seems not related to the ADC. A new test run did face the same problem and does not use the ADC.
I don't know what te problem is.
by systemsconnect
Thu Feb 19, 2015 7:04 pm
Forum: ESP8266 SDK
Topic: Wake up interrupt from deep sleep
Replies: 4
Views: 10142

Wake up interrupt from deep sleep

I've enabled the wake up interrupt on GPIO pin 4 at hi level. The interrupt is working during runtime at deep sleep (option 1) it does not wakeup, why?

Code: Select all

gpio_pin_wakeup_enable(GPIO_ID_PIN(4), GPIO_PIN_INTR_HILEVEL);
by systemsconnect
Wed Feb 18, 2015 11:11 pm
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: ADC damages Wifi radio?

OK, I've tried option 0 but still it does not connect. I don't understand why it should working in the first hours and just stops after a while. I've tried multiple ESP chips.
If the ADC is not connected it's perfectly working all the time so the firmware seems OK.
by systemsconnect
Wed Feb 18, 2015 8:49 pm
Forum: ESP8266 HDK
Topic: Wifi radio not working
Replies: 13
Views: 9114

Re: ADC damages Wifi radio?

Thanks for your answer, but I'm already calling deep_sleep_set_option(1) before deep sleep. This does not solve the problem.

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