Search found 23 matches

by rodmcm
Mon Dec 24, 2018 8:55 am
Forum: ESP32 Arduino
Topic: Examples for many serials ports
Replies: 4
Views: 614

Re: Examples for many serials ports

There are three hardware based serial ports (0,1,2) on the ESP32 without using hardware serial Have a look at an IO cross reference for the IO associated with each port You can use by calls such as this HardwareSerial Serial1(1); #define SERIAL1_RXPIN 25 #define SERIAL1_TXPIN 26 Serial1.begin(57600,...
by rodmcm
Mon Dec 24, 2018 8:47 am
Forum: ESP32 Arduino
Topic: WIFI AP connection crashes ESP32
Replies: 2
Views: 326

Re: WIFI AP connection crashes ESP32

Thanks for that I was using I2C at the same time.. When I removed the I2C the problems went away.. I am convinces that ESP32 is just not a good product if you attempt to use too many features.. So I have split my program into two ESPs, one for WIFI connect and one for logic. Works only because ESP i...
by rodmcm
Mon Dec 24, 2018 8:40 am
Forum: ESP32 Arduino
Topic: HardwareSerial question
Replies: 4
Views: 605

Re: HardwareSerial question

Serial1.setRxBufferSize(1024);
by rodmcm
Thu Dec 06, 2018 5:59 am
Forum: ESP32 Arduino
Topic: How to update ESP32 Arduino Core
Replies: 1
Views: 401

Re: How to update ESP32 Arduino Core

There are two ways In Arduino IDE the board manager can be used to select ESP32 and update the latest 'released to Arduino" ESp32 files. These are not the latest on Github If you use the Github then this can upload the latest version In both cases the files are located in a hardware folder in your A...
by rodmcm
Mon Nov 26, 2018 4:10 am
Forum: ESP32 Arduino
Topic: WIFI AP connection crashes ESP32
Replies: 2
Views: 326

WIFI AP connection crashes ESP32

Downloaded the latest ESP32 to Arduino IDE and found that every time my PC or phone looks for the AP connection then the ESP32 crashes. Usually this is when 'seeking IP Address"
Has anyone had issues with this new version. Any fixes?
by rodmcm
Tue Nov 20, 2018 6:57 am
Forum: ESP32 Arduino
Topic: USB alternative for debug?
Replies: 5
Views: 465

Re: USB alternative for debug?

The USB connection actually uses TX0 and RXO so you can put another power supply on and use the USB only for logging via Serial.print etc.

You also have two other serial outputs that you can connect to a FTDI unit and look at the output with Putty or similar
by rodmcm
Tue Nov 20, 2018 6:49 am
Forum: ESP32 Arduino
Topic: Esp32 rebooting continuously
Replies: 5
Views: 309

Re: Esp32 rebooting continuously

If you search google Doit ESP32 you will find a lot of people with this problem. it appears that their design is susceptible to low voltage, especially if powered from a USB port alone. Most people have got over this by adding in another power supply to Vin or to 3.3V.. My solution is to buy from an...
by rodmcm
Wed Sep 12, 2018 11:11 pm
Forum: ESP32 Arduino
Topic: AnalogRead interferes with Digital Interrupt
Replies: 1
Views: 493

AnalogRead interferes with Digital Interrupt

I have deduced that reading an analog under a timed interrupt interferes with my digital interrupt. A Google search shows others have had this problem as well.. I tried some of the workarounds but no success Has anyone a proper solution for this. The attached code is a much simplified program. If th...
by rodmcm
Wed Sep 12, 2018 9:11 am
Forum: ESP32 Arduino
Topic: How to cancel the Interrupts Stack?
Replies: 6
Views: 608

Re: How to cancel the Interrupts Stack?

Hi Could you please explain a little more on the stacking and halting please. I am using a timer interrupt and a digital pin interrupt. Both will not work together but they each run fine alone.. If run together then the onTimer operates but the handeInterrupt seems to just report a constant count. T...
by rodmcm
Tue Sep 11, 2018 11:24 am
Forum: ESP32 Arduino
Topic: Questions about the WiFi library
Replies: 2
Views: 368

Re: Questions about the WiFi library

You could set up the ESP as an AP network and have a direct access that way, or else have a phone APP search and connect to the ESP.

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