push-pull | Implementing Push-Pull Efficiently | Animation library

I am trying to control a stepper motor, using a A4988 driver along with a Nucleo 144 board with an STM32F767ZI on it.

The A4988 driver expects a single rise in voltage to HIGH in order to step the motor.

Having made some voltage readings using a multimeter, I have found that during and even while the program is paused, there is a steady voltage of around 1.2V being output by the pin.

I also added some lines to toggle an LED (built onto the board) whenever the output to the A4988 driver is toggled between HIGH and LOW, which works fine.

Here is the code:

main.c

I've been looking at different references on how to enable k3s (running on my pi) to pull docker images from a private registry on my home network (server laptop on my network). If someone can please point my head in the right direction? This is my approach:

1. Created the docker registry on my server (and making accessible via port 10000):

I am using STM32 cubeMX for configuration and Keil for programming. Have set onboard led pin pc13 pin as an output pin and default in push-pull mode. Set debugger to the serial wire as I am using ST-link V2 as a debugger. RCC set HSE to crystal/ceramic resonator. and clock configuration set to default and generated project.

Now I started with a simple LED blink program. As below

I wanted to remove the push-pull changes button from the status bar in vs code, since I usually push to a different branch than I'm currently on when making pull requests (I pull from master though, and frequently commit to it locally). I right clicked it, and clicked "remove source control". It removed that, as well as the display of the current branch I am on, which I rely on frequently. I have been trying to get it back, but haven't found any way to do so.

While trying to fix it and bring the branch name back, I found the Enable Status Bar Sync setting in the Git extension, which does exactly what I wanted to do originally. However, none of the scm shows up in the status bar any more at all, so the setting doesn't do anything.

Besides documentation: https://code.visualstudio.com/docs/editor/versioncontrol

I also tried restarting vs code multiple times, have searched through settings, and haven't found anything close. I uninstalled and reinstalled my various git related extensions as well.

If there is something I can modify in the settings json, I know you can change colors with this:

I am using the STM32L475 MCU and am using SPI to communicate with an SD card.

When I configure the SPI SCK GPIO pin, I configure it as Alternate Function SPI in PushPull mode. I set the ClockPolarity to be idle low, which would make me think that the SCK line would remain low when inactive, but this is not the case. Instead, the SCK line idles high until SPI communications are started. This means that if I do a SPI write and subsequent read, an extra clock pulse is triggered, throwing off my communications.

The only way I found to be able to fix this is to further configure the GPIO pin to have a pull-down resistor, but this seems to me like it will be wasteful in terms of current draw. Configuring the pin as open-drain doesn't do the trick either, since I need to add a pull-up in that case anyway. Finally, I have tried writing to the GPIO pin's output register for the SCK pin and setting it to be low, but this does not change anything.

It seems to me like my only option is to place a pull-down resistor on a push-pull pin and constantly waste current in order to have the SCK line stay low. I was wondering if this was the normal solution that people used for SPI communications? I can't imagine that it is.

I want to frequently publish messages to a Redis server from a Python component. Then, in an other PHP component that also has the access to this Redis server, I want to send emails to users based on the messages that are stored in Redis. If I'm not wrong, there are two ways of doing that: Push-Pull and Push-Push designs:

Pull design

The PHP component is frequently making requests to the Redis server, and when there is a new message, make the action.

Push design:

We don't need to make these frequent requests from the PHP component: Whenever a new message is published in Redis, the action from the PHP component can be triggered.

My question

How can we implement the Push-Push design? When I read the Redis documentation about the Pub-Sub model, I don't find anything about it. So I don't really understand how we can trigger an action, in an other way then making frequent requests to the redis server.

I'm trying to configure the baudrate of USART1 on an STM32L152. When using the external Clock the baudrate is half of what I configured (e.g. 57600 instead of 115200). However, when using the internal HSI everything is correct. The internal is 16 MHz and the external is an 8 MHz crystal that is used to drive the PLL for a 32 MHz system clock.

This is the RCC init code, which is pretty much standard I guess.

I'm trying to enable the PC13 in the Blue Pill (stm32f103c8t6) which is connected to an LED, not sure if it is active low or active high so i tried both still doesn't work.

RCC->APB2ENR |= 0x10;
is used for enabling the clock in Port C.




GPIOC->CRH = (GPIOC->CRH & 0xFF0FFFFF) | 0x00100000;
is used to configure the port C to be in Output mode and Push-Pull.




GPIOC->ODR &= !(1<<13); is used to drive the C13 pin to LOW.

The whole code:

I have used Git on Windows for a while, but recently changed the setting and got this.

On almost every command for Git Bash (also on PowerShell and Github Desktop) I get