STM32 MCUs Products

On-Board Communication via CAN without transceiver

Two CANs on the same board. Can I connect CAN1TX to CAN2RX and CAN1RX to CAN2TX?

HAL_I2C_Slave_Receive_IT issue ?

I had a problem using this API HAL_I2C_Slave_Receive_IT(&hi2c1, buff, 100) in case i send 20 bytes for example wich is a corrupted frame for me (i am waiting for 100 bytes) then i2c driver will stack this 20 bytes and it does not free them wich in a ...

Cannot Configure TIM3 , Timer count values are drifting ?

I'm using an STM32F401CCU6 microcontroller and am trying to generate a timer interrupt of 10 us with TIMER3.The timer is a update event timer. The formula I'm using is:Update_event = TIx_CLK/((PSC + 1)*(ARR + 1))Below, I've given my clock configurati...

Nucleo429zi , download example code from https://controllerstech.com/uart-dma-with-idle-line-detection/contains - "DMA and idle line" succeeded to build, debug, running ,the Expression shows RxBuf-Error:Target not available

Make a OR logic gate

I have a STM32F4 microcontroller and want to combine two analog signals into one "combined digital output signal", which have sum of the 2 signals.if i have two analog outputs PE11 and PE13 that will be my inputs of or gate:HOW CAN I MAKE PE12 + PE1...

103C8 and 103RC ,What are the differences configuration between these two processors? I am configuring with register level. i search and i think all features are same. someone use it for same project?

STM32L151CBT6A MCU, Enter stop mode have biggest power consumption - above 960uA, but datasheet is ~2..10uA ? And MCU not wake up from STOP by RTC WKUP

Code of main cycle:// Some "works"... ipf("Works 5 sec\n\r"); HAL_Delay(5000);   // Prepare... ipf("Power save STOP mode 5 sec\n\r"); double CounterVal = 5000 * 2.3125; if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, (uint32_t)CounterVal, RTC_WAKEUPCLOCK_RTCC...

Have: STM32L151C8xxA Get VREFINT trouble (VREFINT voltage drifts depended on external power supply), how to get REAL input voltage?

Code for prepare MCU ADhadc.Instance = ADC1; hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV2; hadc.Init.Resolution = ADC_RESOLUTION_12B; hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc.Init.EOCSele...

Have you ever met a problem with HAL_MMC_ReadBlocks?

Hi,I'm working on SDMMC on STM32U5 nucleo board.Everything works fine for 1 and 4 bit mode.But, in 8 bit mode I can write data with HAL_MMC_WriteBlocks but when I try to read back with HAL_MMC_ReadBlocks, it always gets SDMMC_FLAG_DCRCFAIL.Have you e...

SD_FindSCR Function!?

My problem just like https://community.st.com/s/question/0D50X00009XkdhZ/sdfindscr-function-problem​In ​the SD_init function ,I use HAL_SD_ConfigWideBusOperation to change bus wide.​but sometime it will dead in SD_FindSCR => while(!__HAL_SD_GET_FLAG(...