About thln47

thln47 · 2022-10-25

Hello,I use an open source projet (open62541 on github) to get OPC-UA implementation over lwip.When my projet is compiled with open62541 source code, it's works without error.But the 2 files generated 'open62541.c' and 'open62541.h' are very big (aro...

thln47 · 2018-04-12

Posted on April 12, 2018 at 15:52Suggestion to optimize CPU time.Hello,I'm working on STM32L433 device and I use the LCD peripheral embedded. The CPU executes my main loop every 50ms, like the description below. And I refresh the LCD display at each...

thln47 · 2016-02-01

Posted on February 01, 2016 at 13:37Hi, MCU : STM32F303RBT6 Library : STM32Cube_FW_F3_V1.4.0 () I want to use USB SOF (Start Of Frame) as 1ms timer to send usb datas. With the old standard library, it's works perfectly. So, I've set my function addr...

thln47 · 2015-12-15

Posted on December 15, 2015 at 14:14 Hi, STM32Cube_FW_F3_V1.4.0\Drivers\STM32F3xx_HAL_Driver\Src\stm32f3xx_hal_pcd.c When a device doesn't respond to the host because his fifo is empty on bulk in transfer (normal operation in USB...

thln47 · 2015-12-14

Posted on December 14, 2015 at 17:16Hi, \STM32Cube_FW_F3_V1.4.0\Middlewares\ST\STM32_USB_Device_Library\Core\Src\usbd_core.c (version V2.4.1) The last update with ''Prepare endpoint for premature end of transfer'' modification doesn't work. I had ...

thln47 · 2022-10-26

Thanks "Pavel A.", but I found my problem.When I made the libopen62541.a library, I've forget to define LWIP_COMPAT_SOCKETS with value 2.So lwip functions was undefined, and when I link the library with my main project, the linker failed.

thln47 · 2022-08-31

Thanks a lot @SPfis.1 for your awnser,But I have a question about cleaning DCache. Are you sure about your code?SCB_CleanDCache_by_Addr((uint32_t*)alignedAddr, ((uint32_t)RxBuffer - alignedAddr));Do you not think that the size should be equal or grea...

thln47 · 2022-08-31

If I resume, and if I understood correctly:A - For reading function, we must do the following steps:A1 - Check if RxBuffer is 32 bytes misaligned then in this case clean DCache to avoid to lost data when DCache is invalidate after DMA transfer. uint3...

thln47 · 2022-08-30

Hello everyone, I've the same problem using FATFs to manage files with STM32H743 on FRAM device (256Ko).It's DCache coherency problem when using DMA transfert, and buffer data alignment (32bytes).I made the read and write lowlevel functions like this...

thln47 · 2016-02-01

Posted on February 01, 2016 at 17:34 Hi, With your code, the user buffer (pbUsrBuf) should be 16bit aligned to works properly. If pbUsrBuf point an odd address, I'm not sure that the copy is correct. By the way, if you want to im...

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Linker error using static library

LCD Suggestion to optimize CPU time.

USB SOF interrupt not working :(

missing NAK on bulk in transfer after a clear EP command!

USB enumeration failed !

Re: Linker error using static library

Re: FATFS f_open fails when data cache is enabled

Re: FATFS f_open fails when data cache is enabled

Re: FATFS f_open fails when data cache is enabled

Re: USB Library - shitty code.