About Nabekaite

Nabekaite · 2021-06-17

I have RS-485 transceiver connected to USART1 (PA9 + PA10) and relay connected to PB4. If MCU have erased FLASH or RST-pin connected to GND all incoming data to pin PA10 (Rx) for RS-485 line translated to pin PB4 in inversion (0 on PA10 => 1 on PB4, ...

Nabekaite · 2021-06-17

On my board i use USART1 and USART3 to connect my device to other by dual RS-485. 485 tranciever connected to MCU throw digital isolator (4 tx, 2 rx SI8662). If 485 line of USART1 not connected ti device i can start debugging in Keil without problem....

Nabekaite · 2021-06-23

"WWDG_SW active (i.e. 0) in option bytes" - you was too close. IWDG_SW bit make me feel pain in ***.After checking this bit in ST-Link Utility reset pulses gone. Now we start testing debug with RS-485 line.

Nabekaite · 2021-06-22

a) On other PCB this ST-Link and cable works great. I try another ST-Link on my PCB and there is no difference. My colleagues faced the same problem on similar boards (3 identical boards were made).b) Checked this several times.c) we have troubles on...

Nabekaite · 2021-06-22

Look at the voltage level of blue plot. i think logic analyzer can't catch too small amplitude correct. I can pull up JRST pin and shift avg voltage level, if it can help.

Nabekaite · 2021-06-21

I can't enter debug. I can't load full FW, only some little part.All unused pins set as disconnected (CubeMX default state)Every Vcc pin have 0.1 uF cap. Oscilloscope show no glithes on 3.3 V rail.Noise in power rail can be cause of periodical nRST p...

Nabekaite · 2021-06-21

With STLink-Utility not all is ideal. When i try download FW from Keil end got error, then i checked FLASH by STLink-Utility and see that some FLASH was flashed. After that i can't erase chip because " Error occured during flash mass erase!"

User statistics

User Activity

Translating incoming data from PA10 (USART1 Rx) to PB4 (JTRST) with erased FLASH or under reset in STM32G473

STM32G473 can't start debugging with incoming data stream on USART1 Rx pin

Re: STM32G473 can't start debugging with incoming data stream on USART1 Rx pin

Re: STM32G473 can't start debugging with incoming data stream on USART1 Rx pin

Re: STM32G473 can't start debugging with incoming data stream on USART1 Rx pin

Re: STM32G473 can't start debugging with incoming data stream on USART1 Rx pin

Re: STM32G473 can't start debugging with incoming data stream on USART1 Rx pin