Questions tagged [raspberry-pi-pico]
For questions relating to the Raspberry Pi Pico microcontroller.
raspberry-pi-pico
657
questions
7
votes
4
answers
8k
views
How can I make the Raspberry Pico not automount as USB storage while using Circuit Python
I am using Circuit Python on a Raspberry Pi Pico to give me hardware buttons for keyboard shortcuts. I am using Circuit Python as opposed to MicroPython because it has the USB_HID library.
I don't ...
- 71
6
votes
3
answers
5k
views
How can you make a micropython program on a raspberry pi pico autorun?
I have used the software Thonny to send programs to my raspberry pi pico. I am trying to make a specific program auto run when my pico is plugged in. At the moment another program which is on the pico ...
- 71
6
votes
3
answers
6k
views
OSError: [Errno 12] ENOMEM
I use code from here. After running multiple times from Thonny without issue I got:
OSError: [Errno 12] ENOMEM
I used nuke.uf2 to clear storage on Raspberry Pi Pico W. The error re-occurred after ...
- 65
6
votes
4
answers
6k
views
How to run code on the second core on Raspberry Pico
I'm trying to get multicore working on my pico,
#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/multicore.h"
void core1_main()
{
stdio_init_all();
while ...
- 103
5
votes
1
answer
6k
views
VS Code doesn't recognize Pi Pico SDK headers
So I have everything setup to compile in Windows Subsystem for Linux and that is all working fine. I'm writing my code in VS Code and it doesn't recognize the headers such as "pico/stdlib.h"....
- 125
5
votes
3
answers
2k
views
Why MOV instruction is replaced by ADD instruction
I have the following instruction: mov r1, r7 in my assembly code but after looking into disassembly, I've found that actual generated code was adds r1, r7, #0
I checked with ARMv6-M Architecture ...
- 12k
4
votes
3
answers
1k
views
"cannot read spec file" trying to create uf2 file
I am trying to create a uf2 file for a Raspberry Pi Pico for a swarm robot. I get:
arm-none-eabi-gcc: fatal error: cannot read spec file 'nosys.specs': No such file or directory
I installed the SDK:
...
- 41
4
votes
1
answer
8k
views
Read/write data over Raspberry Pi Pico USB cable
How can I read/write data to Raspberry Pi Pico using Python/MicroPython over the USB connection?
- 494
4
votes
2
answers
5k
views
Is it possible to run OpenCV on Raspberry Pi Pico onboard?
I need to build standalone module which records video from rasberry pi camera to sd card (through external module) when the motion on video is detected.
So, I need to run OpenCV that I will use for ...
- 1,016
4
votes
2
answers
409
views
Raspberry Pi Pico 64 color VGA
I have found these examples from Hunter Adams to generate a VGA signal using the Raspberry Pi Pico. It is a simple setup that I want to extend. It uses only 3 pins for the RGB colors so it is able to ...
- 1,208
4
votes
0
answers
2k
views
MicroPython websockets library for Raspberry Pi Pico W?
I'm working on a project where I need multiple devices to connect to a shared server that can exchange data in realtime. I was approaching this problem by creating a websocket server on a Raspberry Pi ...
- 338
3
votes
1
answer
4k
views
CMake Error while trying to build a uf2 file for the Raspberry Pi Pico
While trying to execute the
cmake -G "NMake Makefiles" ..
command I'm getting the error
CMake Error: Error required internal CMake variable not set, cmake may not be built correctly#
...
- 33
3
votes
1
answer
9k
views
How to have the Pico W set correct time on boot
When running on batteries the Pico W's clock/utime starts at 2021-01-01 00:00:00 by default.
At every boot it obviously should:
Get the current time on its own, likely off the internet.
Set it's ...
- 345
3
votes
3
answers
3k
views
Arduino RP2040 Pico Unique ID
I am using Raspberry pi pico on Arduino IDE. I am using this library githublink for it. There is 3 examples in this link, ArduinoUniqueID and ArduinoUniqueID8
doesn't print anything. Ide says
WARNING: ...
3
votes
2
answers
1k
views
Why voltage from Raspberry Pi Pico ADC is not equal 0, when nothing is connected to the pin?
I was trying to read some voltages from a sensor, but before doing that, I checked how readings would look like, when nothing is connected to pins.
Here's my code based on examples:
#include <stdio....
- 43
3
votes
2
answers
7k
views
CMake is not enabling exceptions
I have a small C++ program that I need to use exceptions in. When I try to compile it I get the error:
error: exception handling disabled, use '-fexceptions' to enable
In my CMakeLists.txt I set the ...
- 79
3
votes
1
answer
513
views
Read value from SPI on Raspberry Pi Pico using Rust
I am trying to read a value from a sensor, BMP280 over SPI on a Raspberry Pi Pico. But I am getting an unexpected value.
I created a new repo based on the rp2040-project-template and modified it to ...
- 126k
3
votes
1
answer
13k
views
How do I manually install a library in Thonny
I want to install this library using Thonny https://github.com/adafruit/Adafruit-uRTC to use a DS3231 with my Raspberry Pi Pico. I cannot install it via the built-in package manager feature for two ...
- 21.8k
3
votes
1
answer
1k
views
Error including WiFi.h in PlatfarmIO pi pico
I'm trying to connect my pi pico W with the WiFi.h library, but once I build (compile) the script it fails and brings a ton of error messages in the terminal:
Removing unused dependencies...
Verbose ...
- 61
3
votes
1
answer
2k
views
Run code with cargo run on Raspberry Pi Pico using elf2uf2-rs
I try to run Rust code on a Raspberry Pi Pico. A simple "blink" example application is successfully (as it seems) built using:
cargo build --release --target=thumbv6m-none-eabi
I have ...
- 126k
3
votes
1
answer
547
views
Host does not update data from reports
I'm trying to develop a custom UPS using TinyUSB on a Raspberry Pi Pico and getting it discovered by UPower on my Ubuntu host. I'm trying to signal a charging state to the host, but the host reports ...
- 470
3
votes
1
answer
2k
views
How to read FLASH contents on a Raspberry Pico?
The process to transfer a .UF2 image of an application onto a Raspberry PICO device is well-documented and works as advertised.
Are there ways to flash multiple files (or contents, since there is no ...
- 314
3
votes
1
answer
794
views
Hard fault RP2040 pico Zephyr
I'm using RP2040 under Zephyr and MCUboot. The final goal is to be able to update the firmware using MCUMGR over an UART bus. MCUboot use A/B seamless (dual slot memory) method to provide a safe ...
- 51
3
votes
1
answer
824
views
Launching core 1 on the RP2040 with baremetal assembly
As I understand the documentation, 2.8.2, the process of launching core 1 is to send a sequence of values, with the final 3 being the vector table, stack pointer, and entry point, over the FIFO, while ...
- 61
3
votes
1
answer
2k
views
Cannot send serial data from raspberry pi pico ( c sdk )
I'm making a remote controlled machine using a pi pico to drive the motors and read some sensors, and a raspberry pi 4 to send commands to the pi pico via serial and host the web interface.
I am ...
- 75
3
votes
0
answers
143
views
How to make rp2040 DynPin usable for Adc with OnesShot read
I am trying to convert from a type erased type to a value type.
I have the following struct that accepts DynPin , which is the type erased type of a rp2040 gpio pin.
pub struct PhProbe{
...
- 142
3
votes
0
answers
404
views
ImportError: can't import name InvalidChecksum
in raspberry pi pico board when i tried to connect 3v3 with 3v3 of raspberry pi pico , gnd to gnd of raspberry pi pico and dat to g16 and ran this belo code on thonny micropython .
main ...
- 31
3
votes
1
answer
643
views
MPU6050 only outputs 0x00 on I2C with MicroPython
I've been trying to talk to my MPU6050 with a Pi Pico running MicroPython. I can verify the I2C is working because when running i2c.scan(), I get the MPU6050 address(0x68). However, when trying to ...
- 61
3
votes
1
answer
2k
views
How can I determine available RAM on Raspberry Pi Pico from a C program?
Is there any library function or other way for a C program on a Pico to determine the RAM available to it? (other than attempting malloc()) I've reviewed the API documentation in the SDK and didn't ...
- 1,955
2
votes
1
answer
10k
views
How can i get raspberry pi pico to communicate with PC / external devices
For example when i give 5 to the code, i want to turn on the led in our rpi pico (rpi pico connected to pc with cable)
#This code will run in my computer (test.py)
x=int(input("Number?"))
...
- 45
2
votes
3
answers
1k
views
Device descriptor request failed
I tried working with my RPi Pico today and my computer doesn't recognize the usb I triple checked the cable is power and data. And yes I'm holding the button
- 41
2
votes
1
answer
2k
views
How to read from UART peripheral with a DMA channel?
I struggled to figure out, how to read from a UART peripheral into a larger queue with DMA.
The documentation does provide quite a bit of information, but I found it difficult to figure out how to ...
- 2,362
2
votes
1
answer
184
views
How to interface with BNO085 using Raspberry Pi Pico?
I'm trying to read sensor data (BNO085) from my raspberry pi pico w using the C/C++ SDK (Circuit Python isn't feasible because of timing constraints).I am using I2C.
I've written a basic C program to ...
- 58
2
votes
1
answer
144
views
How to send large (>2KB) packets using [BTstack] BLE
I am writing a C application on a raspberry pico W which utilizes the BTstack library. I have a characteristic that points to a 2 kB buffer of data. When a client device signals to ready this data, I ...
- 92
2
votes
1
answer
2k
views
How to add arguments to launch.json in VS Code
I am trying to debug the RP2040 using the new picoprobe.
When i execute the following command
openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed 5000"
OpenOCD works ...
2
votes
1
answer
628
views
How can i use a pico-SDK library in another library with Cmake?
So, my problem is that i have created a .h and a .c file that need to use the hardware/i2c.h and the pico/stdlib.h inside them, but when building the project through cmake the two libraries can't be ...
2
votes
1
answer
2k
views
I2C not working on the Raspberry Pi Pico W with MicroPython
Trying to use the Raspberry Pi Pico W and some i2c devices with micropython but running into issues.
When I try to scan one device, it seems fine, but as soon as any more come onto the I2C bus, it ...
2
votes
1
answer
468
views
Can't modify peripheral registers on the rp2040
I'm scratching my head because I can't write and read some/most peripheral registers.
I'm using Rust here and the setup code from the rp2040-hal.
The following code tries to write 0x42 to the DMA's ...
- 852
2
votes
1
answer
2k
views
Raspberry Pi Pico DMA to a I2C device
I'm using the C/C++ SDK of the Pi Pico and trying to use the DMA to read I2C data in the background. However, there is no example script in Pico-Examples that shows how to use the DMA to read from I2C....
- 65
2
votes
2
answers
2k
views
Error initializing ssd1306 OLED connected to Raspberry Pi Pico
What's going on? i2c.scan() returns [60] as it should:
from machine import Pin, I2C
import ssd1306
i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
oled=ssd1306.SSD1306_I2C(128, 64, i2c)
Traceback (...
2
votes
1
answer
3k
views
Weirdness using the raspberry pi pico uart with the c sdk
I am extremely disconcerted.
I'm making a remote controlled machine using a pi pico to drive the motors and read some sensors, and a raspberry pi 4 to send commands to the pi pico via serial and host ...
- 75
2
votes
1
answer
2k
views
CMake not making uf2 file but no errors
I'm trying to create a hello world program but whenever I try to build it no errors are thrown up but I can't find the .uf2 file to put onto my rasberry pi pico
HelloWorld.cpp
#include <stdio.h>
...
- 31
2
votes
1
answer
966
views
Send data between two pico with LoRa
I am trying to send data from a Pico Raspberry Pi to another Pico through an SX1262, but I can't send it.
I already tried the ping pong example, but the SX1262 library gives me errors in the Thonny ...
- 23
2
votes
1
answer
2k
views
Error when compiling code for raspberry pi Pico using MinGW
I am trying to setup the toolchain for programming a raspberry pi pico using the pico_sdk and MinGW. I have followed this guide : here
I am on windows 10, visual studio code.
Everything is setup ...
- 649
2
votes
1
answer
4k
views
How do I read and analyse csv files in micropython?
I'm setting up a Raspberry Pi Pico to log temperature, humidity etc. to a csv file and to show data on a small OLED screen. Every hour it will log a new line of data delimited by commas to the file.
I ...
- 23
2
votes
1
answer
50
views
Micropython: _thread module imported but not showing methods
Using PyCharm Community Edition 2023.3.2 with Micropython 1.4.3-2023.3 installed and enabled in PyCharm, I want to utilize the 2-core multithreading on a Raspberry Pi Pico W using the experimental &...
- 21
2
votes
1
answer
180
views
missing data when recording audio on raspberry pi pico
i wanted to record audio using max9814 and raspberry pi pico with micropython/circuitpython but when i recorded the data, some parts of it lose because it's trying to read the data and write the data ...
- 408
2
votes
0
answers
291
views
'micropico.initialise' not found
For Raspberry Pi Pico I'm trying to use Visual Studio Code. I used this video to set everything up, but when I press ctrl+shift+p ("run > MicroPico > Configure Project" command) I get:
...
- 21
2
votes
0
answers
193
views
How to flash an RPI board wirelessly?
How can I achieve wireless flash of an RPI Pico W board?
I need this because during testing of my device, I will need to tune it and flash the board frequently which will save time rather then ...
- 63
2
votes
1
answer
559
views
Streaming mp3 audio from a URL in circuitPython
I want to stream mp3 audio from a URL using the Raspberry Pi Pico W. This is my code:
import adafruit_requests
import wifi
import socketpool
import ssl
import board
import audiomp3
import audiobusio
...
- 43