Resolved! esp8266 and stm32l476rg connection
how can i connect the module wifi esp8266 nodemcu v3 with stm32l476rg?
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Developing a circuit based on STM32 for a medical device application
I have tested the POC (Proof of Concept) by using 'Nucleo-439ZI' evaluation Board. I am now going to use the same schematics as reference for my prototype and create a custom board by removing the Morpho and Zio connectors as well as the unintended f...
Resolved! DTCM cache DMA issue
Device is STM32F765VI.I'm using DMA to fill data allocated from DTCM, for some reason this seems to be caching.My understanding is that DTCM doesn't need cache management, help me if wrong here. If I don't enable the data cache everything works as e...
Resolved! Back to back reads of RTC registers sometimes show increasing SubSeconds
I think I may have found a bug with the STM32G4 RTC that I am not seeing in the errata.I am using the RTC on STM32G4 with a 32.768 KHz LSE oscillator. I am having a issue where I would read the RTC twice fairly close together in code. I observed that...
STM32G0 NRST input structure and clamping diodes
Hello, i am interested in the input structure of the NRST pin of the STM32G0x0 series. The datasheet shows a reduced diagram. My question is: is there a more detailed version of the input structure. Is a clamping diode to Vcc build in? If so, which ...
Resolved! CAN Cyclic Frame with 100ms using a timer
Hi everyone,I'm using the STM32F407 for CAN Communication with the Loopback Mode. I'm trying to send a cyclic frame using a timer.I'm using the timer2 with a clock of 84MHz (APB1), a prescaler of 8399 so i will have a tick every 1ms and a period of 1...
STM32 PDM Interfacing with DFSDM Nucleo-L476RG
I'm trying to use a STM32 Nucleo-L476RG to get audio from a PDM MEMs Microphone (Infineon IM66D120A) using DFSDM and save the audio to an SD Card. I'm able to write to the SD card using SPI but I'm not able to get any usable audio recorded onto the S...
STM32F103 RTC + VBAT date resets after power off
Posted on February 28, 2017 at 12:35Im using STM32F103C8T6 and have issues with RTC and VBAT. Project generated in CubeMX 4.19.0 for Keil, I commented date and time setup in MX_RTC_Init() and time restores fine after reset/power off, but date become...
Difference between Tightly Coupled Memory (TCM) and Core Coupled Memory (CCM) ?
Hi all,I'm quite a beginner with these kind of memories. It seems that the ST Core Coupled Memory is inspired in the ARM's Tightly coupled memory concept, however, do they have a significant difference? Perhaps a special Hardware adapation to ST's Mi...
Nucleo-f439zi, Invalid USB Packet ID (0xda)
Hello, I am writing USB OTG from scratch for a Nucleo-f439zi. Till now I have managed to make it reply to some Setup requests, to be more specific it replies to Device Descriptor and set Address , ( I am currently figuring out Configuration request w...
