Search found 6 matches

by usinjin
Fri Aug 30, 2019 6:25 pm
Forum: General Discussion
Topic: spi_transaction_t struct question
Replies: 1
Views: 2457

spi_transaction_t struct question

Hello, I am still somewhat new to SPI communication, so please forgive me if this is a silly question. I am looking at a few different C code examples of SPI sensor communication. When sending commands, some implementations seem to create a new spi_transaction_t and set the tx_data field with the co...
by usinjin
Wed Feb 28, 2018 10:30 am
Forum: ESP32 Arduino
Topic: Issues with latest ESP-IDF and Arduino core
Replies: 1
Views: 3343

Issues with latest ESP-IDF and Arduino core

Hello, I am fairly new to Git and ESP32 in general, so forgive me if this is a trivial question. I feel like I'm doing something wrong updating either/both the ESP-IDF core and Arduino core. I'm using an older version of both and wish to update. However, after doing so, I always get many compiler er...
by usinjin
Sun Feb 11, 2018 3:42 am
Forum: ESP32 Arduino
Topic: ESP32 behaving unexpectedly, not sure how to diagnose
Replies: 2
Views: 4168

Re: ESP32 behaving unexpectedly, not sure how to diagnose

Did you protect the ESP from the motor with diodes & capacitors? Motors will produce current when moving. I'm guessing that the garbage you see is the extra current. I assume the ESP would crash and become unresponsive. Thanks for the reply. We have a 15v 1400uF cap on the servo 5v line, but no dio...
by usinjin
Fri Feb 09, 2018 3:33 am
Forum: ESP32 Arduino
Topic: ESP32 behaving unexpectedly, not sure how to diagnose
Replies: 2
Views: 4168

ESP32 behaving unexpectedly, not sure how to diagnose

I'm using an ESP-WROOM-32 with ESP-IDF. We're getting several sensor's data over I2C and outputting to a servo motor. We're also using BLE in our project. Sometimes, when we boot, or ESP32 seems to go a bit crazy and ignore the code. It's supposed to wait and let a BLE connection initiate and then w...
by usinjin
Mon Nov 27, 2017 9:43 pm
Forum: Hardware
Topic: Cannot communicate with FXOS8700CQ sensor over I2C
Replies: 1
Views: 3825

Cannot communicate with FXOS8700CQ sensor over I2C

Hello all, I'm fairly new to working with I2C, so bear with me if I am a little slow in figuring things out. I have an ESP-32S WROOM32 module and I'm trying to read accelerometer/magnetometer values from a FXOS8700CQ. The sensor is on the The NXP Precision 9DoF breakout board (from Adafruit). I adde...
by usinjin
Wed Aug 30, 2017 6:25 am
Forum: ESP-IDF
Topic: Stuck with Hello_World example
Replies: 2
Views: 4211

Stuck with Hello_World example

I'm fairly new to esp-idf. I believe I have my board set up correctly (ESP-WROOM-32), as I have successfully flashed several different programs to it. However, I cannot get idf-monitor to work for me. For simplicity's sake, I'm trying to get the Hello_World program to print to the monitor as shown i...