Questions tagged [mpu]
The mpu tag has no usage guidance.
18
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Decoupling Caps Topology from Microchip MPU Datasheet
I am trying to develop a power distribution network for this device.
https://ww1.microchip.com/downloads/en/DeviceDoc/MPU-SAMA5D27C-CNVAO-datasheet-60001532a.pdf
I am looking at decoupling capacitor ...
- 145
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19
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Deriving Power Budget for SAMA5D27C from Datasheet
I am spec'ing out my power distribution network and trying to figure out what Buck converters I am going to need for a Microchip MPU design using SAMA5D27C. I am looking through the data sheet below ...
- 145
1
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1
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56
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Required Guidance in Designing MPU6050 I2C Schematic for Daisy-Chaining
I am designing a breakout board using the MPU6050 chip. This is what I have so far, I need some advice/guidance about things I may have overlooked.
I intend on daisy chaining about 8-10 of these ...
- 11
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184
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NUCLEO-H723ZG HAL LWIP won't ping
I am having issues creating the simplest setup with this board. LWIP initializes, I can see my static IP address in the debugger. I can detect if cable is plugged-in/unplugged. MPU is configured and I ...
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103
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Issues in SBSFU usage with MPU for a FreeRTOS based User Application - STM32H7
I am working on the STM32H753 Evaluation board and I have a software architecture with an SBSFU running in the internal flash, that jumps to the External NOR flash to execute the user application (...
- 11
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1
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357
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Data coherency with DMA and I2S audio on STM32H7
Moving from a audio effect prototype based on the STM32F407 to the STM32H757. Did a lot of stuff on the F4 with audio but on the H7 I'm getting stuck and can't get a simple audio loopback with DMA. I'...
- 31
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2
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56
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Router: MPU and PHY separate or together?
I'm designing a router and have noticed that some designs use a 'MPU with built in PHY' package on a single chip, whereas others use a PHY IC communicating to a separate CPU/MPU IC over PCIe.
What's ...
- 415
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229
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224
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Why does a MOSFET level shift on the I2C bus break some I2C devices that operate on the same level as the MCU?
Background:
I'm attempting to control a stepper driver (+5V logic) with an esp32 module (+3V3 logic). The A4988 datasheet claims to operate at +3V3. And indeed it did ... poorly. It works great at +5V....
- 1
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553
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Why does AHRS system with Madgwick filter has so big drift?
I have an MPU9250 on my PCB and I use an AHRS system with a Madgwick filter to get yaw angles. I want to get very accurate and non-drifting yaw angles, but, for unknown reasons, I can't.
I calibrated ...
- 63
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98
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Why does yaw return weird values after tilting on a different axis?
I have an MPU9250 on my board and I wanted to change the yaw calculating axis after reboot depending on how this board is placed, like this:
So now i can rotate the yaw counting axis, thanks to the ...
- 63
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2
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63
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Multi MPU programming standard or algorithm?
I've been reading that electronics in space vehicles (satellites or crafts) have redundant systems. I'm wondering if there are standards or algorithms (not sure here on either term) that I could use ...
- 976
4
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1
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679
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How to Interpret MPU9250 Register Map and Self-Test Documentation
I need help understanding the information given in the table on page 13 of MPU9250 Register Map regarding the Gyroscope Bandwidth, Delay and Fs which are further reference in MPU9250 Self-Test ...
- 223
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2
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534
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MPU9250 Gyro Calibration-Offset
I'm working with mpu9250 gyroscope and I got fine measurements for beginning period (few minutes). I calculated offset at start in manner to average sum of first 1000 results from mpu9250 gyro. But If ...
- 55
-1
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1
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77
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Convert MPU6050 data into sound [closed]
I'm not sure this is the right place, but I've built a seismograph with an MPU6050. Now I'd like to convert the output of the MPU into sound. I really don't know where to start, someone has some ideas?...
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7
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524
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Is it possible to remove a line of code from microcontroller program memory?
int main(void)
{
while (1)
{
delay(50);
if (ButtonPress1) {
ResetOutSwitch();
}
}
Suppose that button press is detected and output switch is ...
- 3
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2
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178
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How should DDR ram layouts at PCB? [closed]
I am designing a board which include DDR3 Ram, AM335x Series MPU. I have a question at this topic.
How should it DDR Ram layouts at PCB? Can I draw at top layer? Or which layer the best? I want to ...
- 67
1
vote
1
answer
522
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STM32MP157 GPU documentation
Reference Manual Chapter 20 of this document describes GPU and basically uses 2 sentences about, it is just present, however it mentions that it supports OpenGL ES 2.1 API. The question is, ST ...
- 351