STM32 MCUs Products

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SWP communication and still debug?

Posted on March 06, 2018 at 10:24 Hi I am using STM32L4 Nucleo board to develop an aplication which will be using the SWPMI port. I've been reading around and seems that the debug framework is already using it? So my question would be, how do I...

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An error on AN4013 OPM Pulse Length Formula

Posted on March 04, 2018 at 22:18Spotted a small error on the Timer application note AN4013r6 (Cross Series Timer Overview), page 15.Pulse Length of a One Pulse Mode is shown as: Pulse-Length = (ARR - CCRy)/(TIMx_CLK/(PSC + 1))..but by referring to ...

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Problem with working on 2.5V

Posted on March 01, 2018 at 11:10 Hello! On the PCB from LDO( MCP1700T-3302E) 3.3V are supplied 2 chips: GPS : SIM 68 M, STM32L475RET6. GPS power supply is controlled by STM. When STM turn on GPS module voltage temporarily drops to 2,...

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STM32R7: USB Com Virtual port sometimes duplicate bytes

Posted on March 01, 2018 at 19:03Hello,recently I am trying to make some device communicating via USB virtual com port. Firstly, device has sometimes problem to enumerate itself:[1922765.320415] usb 1-1.2: new full-speed USB device number 34 using e...

semler by Associate II
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Cellular Discovery Kits - supported modems?

Posted on March 05, 2018 at 11:55Just saw the video from EW 2018 featuring this:https://disq.us/url?url=https%3A%2F%2Fyoutu.be%2F7hsoJQ9VyjE%3Flist%3DPLnMKNibPkDnF0-Il_VcqZ_z-Kz4aJznsj%3A3jTeqa2WVQGNMqeiTsZMA8an-eg&cuid=4345368  At ~2:10 It mentions...

Resolved! STM32F769 Disovery ITM_SendChar

Posted on March 05, 2018 at 15:46Hi I am using Atollic studio and the STM32F769 Discovery board.I removed resistor R93 and fitted a 0R link to R92 so that the SWO line is connected to the ST-Link on the discovery board.I have followed this tutorial ...

Resolved! STM32F411VE Master-->SPI--> MAX7219 Slave

Posted on March 03, 2018 at 18:04 Hi, I beleive i have initialised my master STM32 correctly somehow i cant get my slave to understand my master. My problem is my slave does not seem to understand the master, i have tried various things, li...

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tom.abel by Associate II
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FSMC Controller (expand fpga and sdram)

Posted on March 06, 2018 at 03:41HelloI would like to expand the external memory using the STM32F429's FMC Controller.I want to connect BANK-1 to FPGA(like SRAM) and SDRAM bank(1 or 2) to SDRAM.Is it possible to use FPGA and SDRAM ?- sdram interface...

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Must GPIO register be configured for trace port

Posted on April 22, 2015 at 14:15Hi, I'm working with the STM32F107. I would like to use the TPIU (trace port interface unit) with my uLinkPro. Do I have to configure the GPIO registers? I already set the DBGMCU_CR register. Thanks Matt