Ask questions, find answers, and share insights on STM32 products and their technical features.
Hi,I have a design with a STM32F301 controller. I don't need JTAG, therefore I want to reuse the JTAG pins for other purposes.Is it a problem if the NJTRST signal is toggled when the uC is starting up? Could this affect the uC operation, or does this...
Hi,AN2606 (STM32 microcontroller system memory boot mode) states e.g. for the STM32F301, that in system memory boot mode both USART_TX pins (USART1_TX & USART2_TX) are used as outputs. Is the TX pins really configured as outputs as soon as the system...
Hello, I need to calculate checksum over a struct I have defined. Can anyone please help me with this? The data is structured as below: typedef struct eeprom_struct { // char serial_number[5]; float detector_comp_ch0; float detector_comp_ch1; fl...
I am trying to understand the priorities, subpriorities and priority grouping in my stm32f407-Discovery.I would like to have 3 external LEDS (LD_A, LD_B, LD_C) and 3 interrupts (IT_A, IT_B, IT_C) with. IT_A has a highest priority, IT_C has the lowest...
We use the STM32H743BI.We have a problem with writing the Backup-RAM if the mapped variables size is not multiple of 32 Bit.According to the reference manual (rev. 7) the backup RAM is accessible in 32-bit, 16-bit or 8-bit data mode. (RM0433 Rev 7, p...
Hello, i'm working with the STM32F746G-DISCO development kit. I need to use 3 SPI in reiceive only master mode (each SPI have the same clock). The data comming from the SPI are clocked at 4[MHz]. I need to use DMA to transfer data from the SPI periph...
Hello,I'm currently struggling to setup flash reading launched from a PC.I've used the example code for simple write and read with HAL from STM32 Cube SW.The example show a reading of an uint32_t after writing a uint64_t.Here is my code:Writing flash...
When I receive the SPI variable I save this as an int like this:uint8_t spiRxBuf;uint32_t highByte;uint32_t lowByte;HAL_SPI_Receive(&hspi2, &spiRxBuf, 1, 10); highByte = spiRxBuf; HAL_SPI_Receive(&hspi2, &spiRxBuf, 1, 10); lowByte = spiRxBuf;int resu...
Hi guys, I've searched the forum and found a handful of posts with a similar issue but the search doesn't seem to be very good for seeing previous posts... Anyway, I've got a PWM output from TIM2 CH1 (200us perioud, 25% D.C.) and I have another PWM f...
