STM32F74NG Discovery SWO external debug
I broke the USB connector on my disco board so can't flash it. Does anyone have experience using an external ST-Link debugger via the CN8 connector?
STM32 MCUs Products
Ask questions, find answers, and share insights on STM32 products and their technical features.
Forum Posts
STM32F407 Analog Watchdog too slow
Hello, I am working on a project in which the AWD must react quickly (less than 500 us).But when using the oscilloscope, it takes around 70 ms to react.The project is big, so i can't give everything, but the ADC are configured like following :uint32...
STM32L082, address in bootloader to skip bank2/bank1 dual boot checks
Module: STM32L0 Discovery kit LoRa, Sigfox, low-power wireless , B-L072Z-LRWAN1 We tried to start the DFU mode on the STM32L082 in this module by software. Using the BOOT0 pin everything runs fine, and the device boots up in DFU mode and we can pro...
what are the initial values to be fed in rtc_tr and rtc_dr registers?
Posted on July 13, 2018 at 09:28hello I am new to stm series microcontrollers and am developing driver for my projects. for the rtc driver am stuck at this point for so long that am not able to put right values in rtc time and date register, am no...
How do I write to RAM, beyond the RAM-range specified in the linker script, when caching is enabled?
I am working with the STM32F760I-EVAL board. In the linker script I have specified that the RAM is only 500 x 1024 bytes, even though it really is 512 * 1024 bytes. By doing this I can place variables in the last 12 x 1024 bytes of the RAM that survi...
How to improve accuracy of CMWX1ZZABZ-091 RTC
I'm using the B-L072Z-LRWAN1 with the CMWX1ZZABZ-091 LoRa® /Sigfox™ module (Murata)The internal RTC is inaccurate and I'm seeing 10 seconds loss per day for some modules. My question is, why could this be? Datasheet says 1.73 seconds / 20ppm for the ...
STM32f429 R0.12c fatfs error f_mount ?
Hi guys,If i use R0.11 fatfs library with cubemx 4.21 verison, f_mount is work. But i upgrade my cubemx version to 4.26.1. Then i create sdio project. But f_mount(&SDFatFs, (TCHAR SDPath, 1) is not work with fatfs library version R0.12c. What can i d...
STM32H7 Flash operation - WBNE flag use is unclear in RM0433
The information in RM0433 regarding the use of the WBNE flag with respect to flag operation is unclear. In DocID029587 Rev 3, page 148/3178 it states:"WBNE1 is reset by hardware each time the write buffer is emptied. This happens when oneof the foll...
Retry issue of STM32F4-Discovery + USB host MSC + FatFS
Posted on July 16, 2018 at 15:54Hello!My name is Jason.I have been testing USB FatFS of STM32F4-Discovery board since last week.And I tested reference source code of STMicro.(STM32Cube_FW_F4_V1.21.0\Projects\STM32F4-Discovery\Applications\FatFs\FatF...
ADC conversion triggering with the falling/rising edge of the PWM signal
Posted on July 08, 2018 at 10:35Hi.I want to generate a PWM pulse which might vary in terms of its frequency and duty cycle. It's easy to make it But I want to start reading ADC values using DMA (for example 100 samples) just after the pulse finishe...
