About ESpra.1

ESpra.1 · 2023-05-12

I'm working on a device that uses Pulse-Width-Modulation to control a DRV2605L LRA/ERM haptic feedback motor driver (datasheet found here: https://www.ti.com/lit/ds/symlink/drv2605l.pdf?ts=1683824689205&ref_url=https%253A%252F%252Fwww.ti.com%252Fprod...

ESpra.1 · 2023-05-03

I'm working with an STM32L552ZET6Q and two DRV2605L vibration motor drivers (Adafruit breakout board version. Link to chip datasheet below). https://www.ti.com/lit/ds/symlink/drv2605l.pdf?ts=1683119643574&ref_url=https%253A%252F%252Fwww.google.com%25...

ESpra.1 · 2023-02-21

I'm trying to configure and collect data from a BNO055 IMU over UART/RS232, using an STM32L552ZET6Q. The BNO055 is on a remote board, connected via cable to the STM32L5 microcontroller. Additionally, I am using a MAX3232CUE+T on either side of the ca...

ESpra.1 · 2023-01-05

I'm working on a device that uses two DRV2605L chips, connected to an STM32L552ZET6Q via I2C and configured for LRA PWM mode (PWM provided by STM32 to provide a constant, varying level of vibration in LRA motor), as well as two BNO055 chips configure...

ESpra.1 · 2022-12-12

I don't know if this is possible, but I'm trying to make an stm32 device using USB CDC, and am trying to make it more "identifiable" by the computer as something beyond just a "USB Serial Device" on a specific com port. At the moment, I'm controlling...

ESpra.1 · 2023-08-30

If I have a port that has more pins (e.g. STM32L552ZET6Q port E has pins 0 to 15), would something like this cover all of them, or would I have to run it for both bytes contained within the port?

ESpra.1 · 2023-05-15

Okay, I've added code. I'm still occupied with something else, but I should be able to get the rest of the info soon

ESpra.1 · 2023-05-15

I checked this before, and yes it is enabled. I checked in the SFRs in debug mode to confirm. Unfortunately, I might not be able to get the rest of the info for a little while since I'm occupied with something else at the moment.

ESpra.1 · 2023-05-12

I checked the mode 1 v mode 2 thing, and last I saw that wasn't happening. I think it's something related to the DRV board I'm using. I'll get the rest to here soon. It can happen to either of them, but never at the same time, which is weird. And aga...

ESpra.1 · 2023-05-04

I meant to say that I'm not changing the signal prior to it dropping out. It just drops out, then quickly returns to normal. The STM32 isn't resetting either. I attached a logic analyzer to see if these moments were happening in relation to communica...

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Can USB firmware or hardware cause a PWM signal to fall to zero, then back to its previous value without warning?

PWM signal randomly dropping.

STM32L552XX UART not able to read responses from BNO055.

Can multiple I2C peripherals interfere with one another?

How do I give an stm32 USB device a more identifiable name?

Re: Reading pins of a port in one line of code

Re: Can USB firmware or hardware cause a PWM signal to fall to zero, then back to its previous value without warning?

Re: Can USB firmware or hardware cause a PWM signal to fall to zero, then back to its previous value without warning?

Re: Can USB firmware or hardware cause a PWM signal to fall to zero, then back to its previous value without warning?

Re: PWM signal randomly dropping.