STM32 MCUs Products

SDRAM Extended Mode Register Write

I am using an STM32F769NI with a MT48H16M32LFB5-6 SDRAM chip, everything works fine. we are looking to set the drive strength to 1/4, 1/2 and full to evaluate the effect on EMC testing. From what I read in the programming manual, it states to perform...

How to properly configure the CAN2 RX Interrupt on STM32 ?

Hello,My RX0 Interrupt is not called and I don't understand why. If someone can help me, because I already tried lot of things.The problem is I never go in my "CAN2_RX0_IRQHandler()".I properly configured my CAN timings because the received frames ar...

I have problem to set up 8 data bit Serial Peripheral Interface: when I set data bit size 8, I have 8 proper data bits and 16 clocks in Transmit mode. How could it be fixed?

Is uint16_t and uint32_t interrupt safe in Cortex M architecture?

I am working on some embedded stuff and I had multiple interrupts possibly working on same data and so I was wondering if uint16_t and uint32_t data types are interrupt safe.If interrupt is working a uint16/32_t data and is halfway interrupted by ano...

STM32 I2C multi-device connection

Hello to everyone, I am a newbie on STM MCUs. I need to communicate 6 slaves and 1 master device. But I could not figure out. The master device has been selected Arduino mega due to some specifications. Slaves are responsible to drive motors, Arduino...

Sensortile standby high consumption

I am working on a project using the sensortile. When the MCU is not in use, it enters a standby mode. I measured a current of 4.5 mA in standby mode. What could be the cause of such a high consumption in standby mode?

Losses the bytes of data in LPUART IRQ HANDLER?

I have configured LPUART with 9600 baud rate and enable receiver interrupt with MCU 65Khz low power mode and my uart handler likevoid LPUART1_IRQHandler(void){ uint32_t isrflags  = READ_REG(hlpuart1.Instance->ISR); uint32_t cr1its   = READ_REG(hlpuar...

Uart timeout?

Hi,I am using LPUART for sending data to the GSM. I wrote own uart transmit driver without timeout, like void LPUART1_Send_Data(uint8_t *string){ while(*string) { if((LPUART1->ISR & USART_ISR_TC)==USART_ISR_TC) { LPUART1->TDR=*string; ...

HAL_SRAM_Read_DMA() assumes 8-bits word ?

Hello,When using SRAM without DMA I find several group of APIs for read/write, depending on bus width:HAL_SRAM_Write_8b HAL_SRAM_Write_16b HAL_SRAM_Write_32band also read APIs of course.But for DMA there is only: HAL_SRAM_Read_DMAHAL_SRAM_Read_DMAIs ...