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  • [SOLVED] SEGGER RTT over telnet

    dsc - - J-Link/Flasher related

    Post

    I'm only able to make the telnet connection with the J-Link RTT Client V7.00 if there's also a connection with the J-Link RTT Viewer. Otherwise and all I'm getting is just: ###RTT Client: Connecting to J-Link RTT Server via localhost:19021 .......... Is that how it's intended to work? Im using STM32F407VG Discovery and JLink FW on the STLink hardware.

  • [SOLVED] RTT can't connect to STM32F407-DISCO1

    dsc - - J-Link/Flasher related

    Post

    The problem was because the chip was incorrectly identified as STM32F215 / 217. Here's identification from STM32CubeProgrammer. forum.segger.com/index.php/Att…561f62c6fe8f9b3a485b11bf6 The chip is on an official STM32 Discovery board, so I suspect it is in fact STM32F407, but it is somehow being misidentified. It works with SEGGER RTT now when treated as STM32F215 / 217.

  • RTT can't connect to STM32F407-DISCO1

    dsc - - J-Link/Flasher related

    Post

    I'm able to upload and debug, but connecting with a viewer doesn't work. Here's the output of the J-Link Commander V7.00. I've also tried 1000 kHz with the same result. SEGGER J-Link Commander V7. 0 (Compiled Apr 8 2021 14:31:32) DLL version V7.00, compiled Apr 8 2021 14:30:05 Connecting to J-Link via USB...O.K. Firmware: J-Link STLink V2 compiled Aug 12 2019 10:28:03 Hardware version: V1.00 S/N: 778399013 VTref=3.300V Type "connect" to establish a target connection, '?' for help J-Link>connect …