Posted on April 12, 2018 at 03:22
Hi,
I'm using STM32F407 in my project and I use DMA2 on USART1 RX/TX. Since my TX packet length changes almost every time, I'd have to disable DMA, reconfigure it to the correct data length, and enable DMA. I...
Posted on April 09, 2018 at 08:16Hi all,I installed the ST-Link Server and after starting it, it opens up the default port 7184 on the local machine. But I have no idea how to interact with it. It's not a HTTP server, because using it over a browser...
Posted on March 24, 2018 at 14:24The user manual mentions using one 88% reflectance target and 17% reflectance target for calibration. I don't know what material has those reflectance values. What exactly should I use for calibration and where can I...
Posted on February 06, 2017 at 17:58I'm really stumped on this one. I have a STM32F411 chip on a Wifi module and I'm trying to get the Serial Wire Output to work. My configuration code is below. Now I can see that there's some signal on the SWO line...
Posted on April 13, 2018 at 04:35Hi AvaTar, Being able to use DMA would free up quite a bit of MCU cycles. You are right that using interrupts could achieve the same functionality. If this turns out to be a hardware limitation, I would have no other...
Posted on April 13, 2018 at 04:29Hi JW, Those are really good questions! I know this might be a very rare case, so I'm just trying to put as much information out there as possible, in case anyone else has the same problem.The errata didn't mention a...
Posted on March 26, 2018 at 05:46I've found this sentence from the VL53L0X datasheet (under 'Performance' -> 'Measurement Conditions'):Reflectance targets are standard ones (Grey 17% N4.74 and White 88% N9.5 Munsell charts).So it seems like the targ...
Posted on March 25, 2018 at 05:25 Thanks David! The two links you posted explained what reflectance is pretty well. It sounds like the white target is probably something opaque and with a smooth surface finish. And the dark target is probably somet...
Posted on February 06, 2017 at 23:57I figured it out. As it turned out I mistakenly swapped the TDI and TDO traces on my PCB and I wasn't getting any SWO through the ST-Link because it's the wrong pin. Stupid mistakes >_<
