HAL | Documents and Information for HAL plateform | Document Database library

I run my Android app (based on Java), and it works. Next, I add to my app code:

FirebaseFirestore fdb = FirebaseFirestore.getInstance();

This code I got from the official Android site https://firebase.google.com/docs/firestore/quickstart

App runs, but next the running device shows the message "app has stopped".

I use a device simulator available in Android Studio.

It is my first Android app, and I can't understand what is going.

----Trace------ 2021-06-08 20:57:30.186 7155-7155/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 2000 <<<<<< 2021-06-08 20:57:30.188 7155-7155/? D/AndroidRuntime: CheckJNI is ON 2021-06-08 20:57:30.210 7155-7155/? W/art: Unexpected CPU variant for X86 using defaults: x86 2021-06-08 20:57:30.214 7155-7155/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat 2021-06-08 20:57:30.229 7155-7155/? E/memtrack: Couldn't load memtrack module (No such file or directory) 2021-06-08 20:57:30.229 7155-7155/? E/android.os.Debug: failed to load memtrack module: -2 2021-06-08 20:57:30.230 7155-7155/? I/Radio-JNI: register_android_hardware_Radio DONE 2021-06-08 20:57:30.239 7155-7155/? D/AndroidRuntime: Calling main entry com.android.commands.am.Am

I'm running into an issue with trait bounds and can't understand what I'm doing wrong. I'm working with the arduino-uno crate from avr-hal and I have a function that reads the ADC, implemented as follows:

I want to implement an embedded project using stm32F0 (arm-based) with VS Code. The project ran properly on other systems.

1. I Added C/C++ extension to visual studio
2. I installed a compiler for cortex-m0 arm: GNU Arm Embedded toolchain/gcc arm for windows.
3. Makefiles installed: binaries file + dependencies file
4. openOCD installed (open On Chip Debugger)
5. tasks.json (build instructions), c_cpp_properties.json (compiler path and IntelliSense settings) were created. I modified the Include path because my program includes header files that aren't in my workspace, and that is not in the standard library path.

c_cpp_properties.json file

I am trying to build a Spring Boot application that combines Webflux, OAuth2 and HATEOAS. Building a minimal application with Webflux and OAuth2 works OK, but as soon as I add HATEOAS, my minimal test fails.

build.gradle:

I'm currently trying to learn Rust (for embedded specifically), coming from a background of C for embedded systems and Python. So far, I've been reading Rust Programming Language and Rust for Embedded, and read a few blog posts on the web.

I want my first project to be a simple "Blinky", where an LED blinks infinitely. I've got an STM32L152CDISCOVERY board with an STM32L152 chip in it (basically same as STM32L151), which is a Cortex M3.

Instead of implementing everything from scratch, I want to leverage existing crates and HALs. I've found two that seem promising: stm32l1 and stm32l1xx-hal. I've tried to read the documentation of each of them and also part of the source code, but I still can't figure out how to use them correctly.

Got a few questions about Rust and about the crates:

1. I see that stm32l1xx-hal has a dependency on stm32l1. Do I need to add both as a dependency in my Cargo.toml file? Or will that create problems related to ownership?

2. Is this the correct way to add them? Why is the second one added like that [dependencies.stm32l1]?

   ...

I am reading from an external API with hypermedia links and OAuth2 authentication using Spring's WebClient. When accessing the API the JSON data is correctly converted to model objects but the supplied HAL links are either omitted if the model object extends Spring HATEOAS RepresentationModel or give a NullPointerException when the model object extends EntityModel. I suspect a problem with the hypermediaWebClientCustomizer but was not able to solve it as of now.

I tried reading the JSON with a Traverson client in a testcase. That was basically working, if i replaced relative URIs with absolute URIs and the application/json header with a application/hal+json header. I would go on with Traverson but besides these two problems Traverson requires a RestTemplate (OAuth2RestTemplate in this case), which is no longer available in our Spring version.

Any ideas if there is a problem with the configuration or what else could go wrong?

This is my configuration:

dependencies (in part)

I'm using STM32f103 and in my program, I need to save some bytes in the internal flash memory. But as far as I know, I have to erase a whole page to write in it, which will take time. This delay causes my display to blink. Can anybody help me to save my data without consuming so much time?

Here is a list that may help:

1- MCU: STM32f103

2- IDE: Keil vision

3- using HAL driver provided by STM32CubeMx

4- sample data for saving in Flash: {0x53, 0xa0, 0x01, 0x54}

In the link below, you can find the code that I'm using.

FLASH_PAGE for Keil

I'm attempting to find all senders who have sent to 4 or more separate receivers (by name), where the total amount sent to those separate receivers exceeds $5000.00 and looking for a way to tell r to maintain all values containing the distinct names, instead of just one.

For instance, using the following data.frame:

I am trying to access a HTML div using @ViewChild based on a JavaScript object as shown below: