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How to trigger CAN Callback (STM32L452) ?

I'm currently trying to get a message from another can device and I can't figure out why my callback isn't triggering.I can transmit a message without any problem however I can't receive any. I am using vector CANalyzer to check my bus.I was trying t...

BZERR.1 by • Associate
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Resolved! Writing assembly code in a C program to turn On/Off GPIO pin

Hello everyone, I am trying to measure how much time is used to finish executing a function. I cannot use the timers because it adds some delay to the system. My other option is to use GPIO pins.To do this, ISET a pin at the start of the functionRESE...

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Xxoyo.1 by • Associate III
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  • 10 replies
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I2C driver always busy after first use

I'm using the HAL_I2C_Master_Transmit_DMA driver on an STM32L412. I am transmitting 8 bytes of data to an external 4 channel I2C DAC - I have only one device on the bus. The first use of the driver works fine as confirmed by using an oscilloscope on ...

deep_rune by • Associate III
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Stop mode 2 with external SPI peripheral

Hello ST community,I have QSPI flash and an environment sensor based on SPI with stm32l496rg development board.If I put controller in stop mode 2 without sensor and flash current consumption of system is 3uA.If I connect flash and sensor then in stop...

Is there any difference between usart6 and usart 1? Usart6 gives me problems with same configuration as usart1, which is working fine.

Hello community,I have a problem with using usart6, although usart1 is working fine.My setup: STM32F439, usarts connected to a dual ftdi chip, so I have two com ports on the pc to choose of, which represent usart 1 on usart 6 resp.Also direct usb con...

APlöt.1 by • Associate II
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  • 3 replies
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Resolved! Performance of floating point operations of F429

Hello,I am measuring execution time of a function that operates with floating point numbers and noticed that it is more than I expect. I am using Nucleo F429ZI, clock is configured to the 50 MHz. For measuring the execution time I use TIM6 configured...

JWilk.1 by • Associate II
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  • 7 replies
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Microarchitectures of STM32F4 devices?

Are there pictures of microarchitectures of STM32F4 series devices? Something like this picture of 56301 DSP.http://strategysanity.com/s-images/dieDSP-Motorola56301.JPGWe'd like to find out what killed some processors on our boards. The dead processo...

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