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In AN4899 it specifies that one should add a zener diode from the 5V rail to the 3.3V rail in order to have complete safety when using FT pins with 5V pull ups. Does anyone know what the specifications of the Zener diode should be (currents, resistan...
Does anyone have experience with 5V pull ups? do you have to power on the 5V source after the MCU is started?I'm running a STM32L431CBT6 with external 5 volt 10k pull-ups on the pins PB11,12,13,14,15 and PA1. (all flagged as FT pins)I've been able t...
Hi, I am working with F413 and I am using USART3 to receive and trasmit data over UART. As I need to receive unknow size of data I wrote my own interrupt handler for RX. However I would like to transmit data out with a help of DMA. If I call regular ...
Hi, I have implemented SPI communication using DMA and it works. When i receive different data than the mentioned protocol format then it hangs and i dont receive any more data and i have to reset the chip to get back the communication. Is there any...
Hi everyone!I'm working with STM32F303. I'm configuring the CAN peripheral with HAL libraries for pooling mode operation. I'm wondering if there is a method to check only the FIFO0 fill level and configure the peripheral to move FIFO1 messages into F...
Greetings!I've got custom hardware running on an ST32H7. I'm trying to load an image from the sdcard into off-chip RAM for execution. RAM's at 0xC0000000, and I think I've set the MPU configuration correctly: // Region 2 is the external RAM MPU_InitS...
Current structure is:typedef struct __DMA_HandleTypeDef { ... HAL_DMA_StateTypeDef State; /*!< DMA transfer state */ ... } DMA_HandleTypeDef;Interrupts can change the State value, but it's not volatile, so the co...
Hi, I would have a question regarding the lead time of the STM32H743ZIT6. We use the part in multiple boards in our platform which is currently in prototype stadium. Fro the next charges of PCBs we are trying to order some uControllers (STM32H743ZIT6...
I have a project where a single stm32h747 will be acting as a system controller for two groups of motor drivers. We want to create a client whenever a motor group is plugged in. This will ideally allow us to use functionality like the last will messa...
