Search found 96 matches

by idahowalker
Tue Sep 24, 2019 2:01 pm
Forum: ESP32 Arduino
Topic: ESP32 PCNT
Replies: 2
Views: 164

Re: ESP32 PCNT

Thank you.
by idahowalker
Mon Sep 23, 2019 3:19 pm
Forum: ESP32 Arduino
Topic: ESP32 PCNT
Replies: 2
Views: 164

ESP32 PCNT

What is the minimum pulse width that the PCNT detect?
by idahowalker
Mon Apr 29, 2019 9:32 pm
Forum: ESP32 Arduino
Topic: Using HardwareSerial to send/receive strings over serial
Replies: 1
Views: 975

Re: Using HardwareSerial to send/receive strings over serial

Here is the ESP32 code I use to send serial: #include <HardwareSerial.h> HardwareSerial SerialTFMini( 1 ); HardwareSerial SerialBrain( 2 ); ////// serial(1) = pin27=RX green, pin26=TX white ////// serial(2) = pin16=RXgreen , pin17=TX white #define SerialDataBits 115200 void setup() { SerialBrain.beg...
by idahowalker
Wed Apr 24, 2019 8:10 pm
Forum: ESP32 Arduino
Topic: vTask in a class?
Replies: 1
Views: 342

Re: vTask in a class?

here is the header file: #ifndef ESP32_MPU9250 #define ESP32_MPU9250 //// #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "freertos/timers.h" #include "freertos/event_groups.h" #include "myESP32_SPI.h" //// class myMPU9250 { public: myMPU9250( int _queueSize ); int fGetAll( ); voi...
by idahowalker
Wed Apr 24, 2019 8:10 pm
Forum: ESP32 Arduino
Topic: vTask in a class?
Replies: 1
Views: 342

vTask in a class?

I'm stuck in a loop. I wrote this class: #include "ESP32_MPU9250.h" //// //// myMPU9250::myMPU9250( int _queueSize ) { ESP32_SPI_API _spi; _spi.setQSize( _queueSize ); // _hEG = xEventGroupCreate(); //// // xTaskCreate( fDoTempratureConversion, "fDoTempratureConversion", 10000, NULL, 3, NULL ); } //...
by idahowalker
Wed Apr 24, 2019 8:01 pm
Forum: ESP32 Arduino
Topic: Problem uploading code
Replies: 2
Views: 573

Re: Problem uploading code

Did you try, after the start of upload code, holding down the EN button? I use a powered hub between the computer and the ESP32, since adding a powered USB hub issues like needing to hold down this button or that button have went away. The is also another reason to use some kind of isolator between ...
by idahowalker
Tue Apr 09, 2019 7:17 pm
Forum: ESP32 Arduino
Topic: Any ESP-Arduino documentation?
Replies: 1
Views: 615

Re: Any ESP-Arduino documentation?

Internet search on "installing esp32 in arduino ide" does not give you any results?
by idahowalker
Fri Apr 05, 2019 11:28 am
Forum: ESP32 Arduino
Topic: Questions about Pull-up/Pull-down and PWM
Replies: 1
Views: 461

Re: Questions about Pull-up/Pull-down and PWM

I think your idea of using a pull up resistor at the higher frequencies is a sound idea. I'd use external resistors over the internal resistors though. In this case size matters. The resistors in the ESP32 are quite small and tiny and weak in comparison to a 1/8th or 1/4 watt resistor.
by idahowalker
Thu Apr 04, 2019 5:47 pm
Forum: ESP32 Arduino
Topic: MPU9250, good news:
Replies: 0
Views: 576

MPU9250, good news:

I wrote this code for the MPU9250. I been testing it for the last 4 days. It's been working wonderfully. Thanks to Koolban, though he does need to update the SPI portion of his notes. Some names have been changed. #include <driver/spi_master.h> #include "esp_system.h" //This inclusion configures the...
by idahowalker
Thu Apr 04, 2019 2:23 am
Forum: Hardware
Topic: Driving an 8-bit parallel 8080 bus using I2S
Replies: 25
Views: 4233

Re: Driving an 8-bit parallel 8080 bus using I2S

LCD1602 2004 20x4 LCD Display Adapter IIC//TWI/SPI/I2C Serial Interface Module Shield https://smile.amazon.com/gp/product/B07D3YPK3H/ref=oh_aui_search_asin_title?ie=UTF8&psc=1 . You might have to do some of your own code or the library might work. I use them to drive LCD's with a Arduino Due and a S...

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