STM32 MCUs Products

Why am I getting a HardFault with -O2 optimization only?

In my STM32F091 project, the Debug build works all just fine.Release build does not.So I kept -O2 to keep the behavior, but added -g3 to be able to debug.Fixed a couple typical bugs like a forgotten volatile on an ISR-accessed flag etc.Now I get a HA...

STM32H7 SPI IRQn never triggered

Hi,I am using SPI1 and interrupt are enabled in this functionvoid HAL_SPI_MspInit(SPI_HandleTypeDef* hspi) { ........................   /* SPI1 interrupt Init */ HAL_NVIC_SetPriority(SPI1_IRQn, 0, 0); HAL_NVIC_EnableIRQ(SPI1_IRQn); /*...

TrueSTUDIO was unable to contact the example project site. How to fix it?

STM32F1 I2C pins stuck low

On the latest version of CubeIDE, using CubeMX and HAL libraries, I am completely unable to get any response out of the I2C hardware. With the pins directly connected to a logic analyser, they stay low when using HAL_I2C_Master_Transmit or HAL_I2C_Me...

are these STM32 ICs genuine or clone ?

Posted on June 04, 2018 at 15:17hello dear forum,I used to buy STM32 F103 mcus from my countries biggest supplierthis IC below is 5,- USD there now becouse of competition I need more cheap products and I imported this below IC for 2,35 USD from Chin...

STM32H755 Buffer to DMA to UART3 Setup, not entering interrupt maybe

I am following the tutorial for memory to peripheral (UART) from Digikey https://www.digikey.com/en/maker/projects/getting-started-with-stm32-working-with-adc-and-dma/f5009db3a3ed4370acaf545a3370c30cstarting @ 6:00 and ending @ 10:00 minutes inThe tu...

Unable to reprogram(verify) code downloads to STM32L4R5VIT6 if previously downloaded with code that configures sysclk to 1MHz. Any clues?

Previous downloads and verify through JTAG worked great when processor settings were set for 16MHz sysclk. Programming with ARM Keil uVision 5.17.0.0 (ULINK2 ). Verify now fails approximately half way through.

I use Timer1 Ch1 Ch2 Ch3 Ch4 in PWM mode 1, configured by Cube MX. But Ch2 and Ch3 do not work. Ch1 and Ch4 works perfect. With the same config stm32f407 works completely perfect. Does any one know something about the problem.