Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with stm32
Search options not deleted
user 38335
The STM32 is the third ARM family by STMicroelectronics. It follows their earlier STR9 family based on the ARM9E core, and STR7 family based on the ARM7TDMI core. The STM32 is based on the ARM Cortex-M family of cores.
4
votes
STM32 Execution Time
In addition to other answers, you can use an oscilloscope if you have one.
At the beginning of your task, set an unused pin (or an LED, etc) high. Then set it low directly after the task completes. …
- 17k
1
vote
STM32L031 not running after stopping debugging
One thing that can stop it from running is if you are using semi-hosting. In your project properties, try to remove the following two symbols:
I have multiple projects, and only some of them requi …
- 17k
1
vote
Accepted
How to interpret the values sent by an MPU-9255?
The MPU-9255 is giving you a 16-bit, signed integer. Your code is interpreting it as unsigned.
An unsigned, 16-bit number can represent values from 0 to 65535. A signed 16-bit number represents -3276 …
- 17k
4
votes
Accepted
Understanding the the setup of a Timer on an STM32F10x
I wrote up a longer answer, before I realized the simple solution. I'm including the full answer in case it's helpful.
The quick answer: The values passed into the TIM_TimeBaseInit() function are …
- 17k
3
votes
USB on STM32F107RCT and Stm32CubeMX
Even though the device is self-powered, you still need to connect the USB's Vbus (pin 1) to the microcontroller's OTG_FS_VBUS (pin PA9).
This isn't to provide power, but to allow the microcontroller …
- 17k
2
votes
Accepted
Do CMSIS libraries also handle GPIO registers?
The STM32 microcontrollers have pretty good documentation. ST gives a few options for device header files, CMSIS headers, abstraction layers, and so on. …
- 17k
5
votes
1
answer
1k
views
How do I interrupt an ISR with a higher-priority ISR on an STM32F105?
I have two external interrupt sources coming into an STM32F105. I want one of them (call it "IRQHigh") to pre-empt the other ("IRQLow"). Currently, if IRQHigh is triggered during the IRQLow ISR, the p …
- 17k
5
votes
Accepted
How do I interrupt an ISR with a higher-priority ISR on an STM32F105?
The priorities are not being initialized correctly.
The code in the question initializes the NVIC like so:
// IRQHigh, enabled immediately
NVIC_InitStructure.NVIC_IRQChannel = IRQHIGH_EXTI_IRQn;
NVI …
- 17k
6
votes
Can I use just plain GCC to compile program for Nucleo?
As other answers state, you want to use arm-none-eabi-gcc to compile your code.
However, compiled code (by itself) doesn't do much good! You need to convert it to an .elf or .hex format. You need to …
- 17k
1
vote
2
answers
8k
views
Full duplex SPI Master using DMA - STM32F105
Since the STM32 is the SPI master, it needs to provide three bytes worth of clock pulses to get the response. Generally, you have the master device send three dummy bytes to create this clock. …
- 17k
3
votes
1
answer
2k
views
How to use level-triggered interrupts with STM32F1xx?
It communicates with it's "driver", which is hosted on the STM32. The SOC and driver want edge-triggering.
How can I configure the STM32F1xx to use level-triggered interrupts? …
- 17k
4
votes
2
answers
4k
views
How to _disable_ USB on STM32F1xx?
I have a battery-powered device using an STM32F107. The device works and I am currently working on minimizing its power consumption.
One of the bigger current draws is the USB subsystem itself, using …
- 17k
59
votes
Accepted
STM32 Understanding GPIO Settings
The STM32 (and other microcontrollers) have built-in circuitry to do this. That way, you don't need to add another part to your circuit. …
- 17k
5
votes
Possible to power STM32 Nucleo boards with USB battery pack?
[Note: User Passerby interpreted the datasheet differently than I did, and he is correct. My answer will work, but his is the better way to do this. My answer does have some good info, though!]
Th …
- 17k
13
votes
Accepted
Understanding STM32 datasheet regarding decoupling capacitors
They are referring to the total number of capacitors needed.
ST has a useful document: "AN4325 - Getting started with STM32F030xx and STM32F070xx series hardware development"
Inside, it is a bit mor …
- 17k