Ask questions, find answers, and share insights on STM32 products and their technical features.
An early rev. of RM0432 mentioned a magic id 0xA3C5DD01 at offset 0x3FC for OCTOSPI. So I thought the presence of that value would be a reliable way to detect the OCTOSPI interface. But the G474 exposes that very id, too ...The only idea that came to...
I have the following code to perform a serial transaction. The idea is that RX DMA is configured first to catch bytes as soon as they are transmitted in response from the other device. TX works great, but RX does not. Interestingly enough, if I use a...
Hey I was hoping that the STM community could help me with a problem that I have been stuck on while developing a CAN bus application. I have a STM32F746ZGT6 micro controller on a custom PCB with two isolated CAN transceivers, ADM3054. My setup is as...
The clock and data lines on SPI seem to go tri-state off when not in use even though the SPI channel is left open. Is this expected behaviour? It causes issues with some connected chips as they see the re-establishment of the driven clock signal as a...
The STM32H7 series has come with the concept of DMAMUX which is different from the older series. it looks awesome and better than the dma request mapping table.But I wonder if it can route multiple dma requests to the same dma stream or not?To be mor...
I am using the CCMRAM to store some large array which should be zero-initialized.My definition for the arrays is similar to:__attribute__ ((section (".ccmram"))) uint32_t large_array[4096];Obviously, there is no constructor for these and there should...
Hello everyone,I want to add a device unique ID (a uint16_t progressive counter that identify my device as a whole, not only the mcu used) at programming time to a stm32f446 based product. Is there a standard known standard way to do this?Maybe it’s ...
stm32f407 read out IPR5 50d0d0d0, document says its Reset value: 0x0000 0000why i got d0
Hi community,I would like to toggle GPIO when operation flash (Erase and Programming)I have tried relocation vector table and code in the ramI have determined vector table and code in the ram，Keil Debug mode show their address in the ram after 0x2...
As the title suggests, im having a problem using HAL to make some USART echo.I tried the same approch on a nucleo-f031 and its working wonderfully.I can print the whole hyperterminal string, but i cant reach the receive interrupt. Even if i set the R...
