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Hello I have This code for STM32F01C8T6 by Using CubeMX and Hal lib :

I am trying out stop mode in STM32F103x which is by the way a clone. I have a timer that counts up to five seconds and then sets a variable "goTosleep" = 1 on interrupt. Depending on the value of goTosleep I execute Stop command. I can exit the stop mode via EXTI. The problem is that the micro controller appears to enter stop mode upon reset. It exits stop mode fine when I give an interrupt on EXTI.

Here is my code.

I have a problem where I want to access certain entries of an armadillo-matrix "M" by a pointer in a struct (or class). After initializing M I set the pointer in the struct. By dereferencing the pointer I can see it has the right value (the first entry of M - or M(0,0)).

Then I change M to M * M. But now dereferencing the pointer does not give me the right value anymore. What's weird: If I have a small matrix i.e. 3x3 or 4x4 (see "matrixSize" in my code) the error does not happen. With small matrices dereferencing the pointer gives the RIGHT value. Bigger matrices though result in the wrong values (with 5x5 something like "2.76282e-320", which is probably some random place in memory).

What am I doing wrong here? How can I solve this problem?

If it helps, I'd like to explain what I want to achieve: I have a network of delay-coupled nodes that each have some sort of dynamic behaviour. (think delay-coupled differential equations DDEs - delay-coupled Oscillators). As they are delay-coupled I need to store their past states (an array of their histories). Each oscillator also has some LOCAL dynamic with dynamical variables that are not influencing other nodes which means that I don't have to store their histories. The matrix shall be used to keep the past states of some variable of the nodes. I want to have them in a matrix, because I want to use vector-operations on them (one index of the matrix represents time, while the other is the node-index). But I also want to access them individually to calculate some local dynamic at each of the nodes (oscillators). So I want to update the individual nodes, but also the global state. That's why having both representations helps: For the local dynamics I access the delayed states through a pointer into the matrix. For the global dynamics I access the coupled variables through a row in the matrix that functions as a history-array.

Trying to create a pulsing tone. Found some help from another posting here (web audio api plays beep, beep,... beep at different rate). Needed to adapt the script. Came up with a satisfactory result that plays and pulses a tone. Cannot figure out a function to stop the tone: .stop() used with oscillators doesn't work.

Any help appreciated.

Here's my code:

I am trying to make a FXB file previewer (VST preset banks for those who don't know) for Sylenth1 banks. I have encoded the FXB as an ASCII string and had it print to the console. The preset names show up fine. My issue is that the parameters for the oscillators, filters and effects are encoded as random characters (mainly "?" and fairly big spaces).

Underlined in red: file header (?)

Underlined in blue: preset name (which I want to keep)

Underlined in yellow: osc/FX/filter parameters (which I want to discard from the string)

Here's the code I wrote:

I want to write a program which turns a 2nd order differential equation into two ordinary differential equations but I don't know how I can do that in Python.

I am getting lots of errors, please help in writing the code correctly.

Good afternoon, I am using stm32 Blue Pill on USB (CDC) com port, "IAR" development environment. I have connected a library 1, 2 for stm32 to work with W25Qxx SPI flash drives ...

I ran the tests in the main.c file as follows: Write byte, read byte, write page, read page, sector write, sector read, block write, block read. All checks were successful, the flash drive is working and there are no problems with the library.

The problem is as follows, when I connect via app or terminal to port and try to send data in "HEX" format 1E 01 0A 02 00 00 09 C4 03, and then write them into memory by the microcontroller (W25Qxx) then USB CDC freezes (crashes) when receiving data packets on stm32 and when reconnecting a message "USB device not recognized" appears on the computer.

3.3v power did not turn off!

In order for you to check this, I will give an example:

The project was created via STM32CubeMX.

Main.c

I want to use both CAN1 and CAN2 for my application with 500kbps and 125kbps speeds respectively. I have initialized both of them as per my requirements using HAL. Where in Tx is implemented in polling and Rx in interrupts. CAN1 Tx and Rx working perfect. Coming to CAN2 Tx is working and Rx is not working. Interrupt itself is not firing up for CAN2 Rx (HAL_CAN_RxFifo0MsgPendingCallback is not being called). I've read in datasheet that SRAM sharing process is happening between 2 CANs. I'm unable to comprehend that. Is that an issue?

I'm attaching the code also. Please check and help!
Little overview - all MCU clocks running at - 16 MHz using internal HSI, No filter in CAN configs

I am trying to transmit the signal using the UART Communication at my microcontroller by means of IDE, but it does not work.

My code looks like the following