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pcu · 2018-12-29

Hello, To have a powerful graphical interface, you need a lot of RAM.Can we use external RAM in Quad / Octo SPI for this?The ST kits with screens often have flash in quad/octo SPI but the external RAM is always in parallel (except STM32L4R9I-EVAL).I ...

pcu · 2017-06-12

Posted on June 12, 2017 at 17:12Hello,I tried my LCD with parallel FMC-16bit on the NucleoL496 kit. All is working so far so good.Now I working on my board and this is a L471 processor.The problem is that it crashes when I try to writing to FMC(0x60...

pcu · 2015-12-22

Posted on December 22, 2015 at 13:57Hello,I configured my STM32F4 like in the AN3109 where USART uses DMA for reception and RX pin is connected to a timer (input capture reset mode) because I do not know the size of incoming messages (modbus).So far...

pcu · 2014-10-02

Posted on October 02, 2014 at 17:05Hello,I try to test my application with a new setup with external SRAM on the STM3240G kit, for heap and stack.I use FatFS on SDIO which needs DMA. When I read a file there is a problem.I know it is not possible to...

pcu · 2013-11-26

Posted on November 27, 2013 at 08:30Hello,I tried to build on Atollic the precompiled package around the emWin graphical lib(AN4323).I build for STM322xG-EVAL, but I get two errors:c:/program files (x86)/atollic/truestudio for arm pro 3.3.0/armtools...

pcu · 2017-06-12

Posted on June 12, 2017 at 21:15Yes you are right.After compare I remember that I chanded the stm32l4xx_ll_fmc.c file because it didn't enable the FMC in FMC_NORSRAM_Init().It is neccessary to add __FMC_NORSRAM_ENABLE(Device, Init->NSBank);Than you.

pcu · 2015-12-23

Posted on December 23, 2015 at 14:50Thank you for your replies.I thought this:After the timeout I reconfigure the timer input in GPIO EXTI mode.At the beginning of the next frame, in the interrupt EXTI I reconfigure the input in timer capture mode.

pcu · 2014-10-03

Posted on October 03, 2014 at 11:37Of course, it will be slower. But if I don't have enough memory I must see for alternate solution.I will check why I can't access the SD with variables(stack memory) stored on external SRAM.KR.

pcu · 2013-11-29

Posted on November 29, 2013 at 10:07yes If I add libm in the linker settings, it is better.Thank you.

pcu · 2013-10-14

Posted on October 14, 2013 at 17:16Now I'm sure this is not memcpy. It is a stack overflow. In fact I think I had a problem with lwip and one with memcpy but in reality it is the same. The program accesses at 0x20020000 address.It could be after 5 m...

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Octo/Quad SPI RAM advice on graphical board

FMC hardfault STM32L471

Usart DMA Rx and timer input capture reset

Question about external RAM and SD

emWin library problem

Re: FMC hardfault STM32L471

Re: Usart DMA Rx and timer input capture reset

Re: Question about external RAM and SD

Re: emWin library problem

Re: memcpy problem