About JLee.32

JLee.32 · 2021-11-10

The STM32H750 USB function was okay when it left the factory because FW update had been test in the factory. Total is 300 pcs. Recently we fond 1 pcs is abnormal. It shows the following information when pluggin in the USB. Is it hardware issue? Coul...

JLee.32 · 2021-08-24

I've download the CMSIS pack for STM32H7 series. ST implement an I2C driver function like this:int32_t I2C_MasterTransmit (uint32_t addr, const uint8_t *data, uint32_t num, bool xfer_pending, I2C_RESOURCES *i2c), but the website, https://arm-soft...

JLee.32 · 2021-07-23

After upgrading CubeIDE from 1.3.0 to 1.6.1 and CubeMx from 5.6.1 to 6.2.1. I got this error:assertion "REENT malloc succeeded" failed: file "/build/gnu-tools-for-stm32_9-2020-q2-update.20201001-1621/src/newlib/newlib/libc/time/lcltime.c", line 50MC...

JLee.32 · 2021-06-29

STM32H750 with external flash and SDRAMTouchGFX version: 4.13.0CubeIDE version: 1.3.0display size: 480x272(landscape), but I config the display orientation in portrait in TouchGFXcolor depth: 24bitsDouble framebuffer, Chrom-Arthttps://drive.google.co...

JLee.32 · 2021-06-26

STM32H750 with external flash and SDRAMTouchGFX version: 4.13.0CubeIDE version: 1.3.0display size: 480x272(landscape), but I config the display orientation in portrait in TouchGFXcolor depth: 24bitshttps://drive.google.com/file/d/1zCucWuLi5BSJUm0VCHa...

JLee.32 · 2021-08-24

@Community member Thanks for your reply. I understand what you mean. but I have two more questions.1) Why ARM keeps naive with latest version of CMSIS? No IC suppliers tell ARM this is wrong?2) IC suppliers is based on which API (or what document) ...

JLee.32 · 2021-08-24

Not just I2C driver, I also check CAN driver, and it is also different. What I learn is that ARM define the API and IC suppliers implement the API, so they should match each other. Does someone know why they are different?

JLee.32 · 2021-08-10

Hi @Markus GIRDLAND & @mattias norlander ,I found the root cause is that localtime() is used in the task of freertos. localtime() calls malloc() which returns -1 due to _sbrk(). Using localtime_r() is one solution, but I'm wondering if we can over...

JLee.32 · 2021-08-09

@Amel NASRI Yes, the issue is still faced with 1.7.0.

JLee.32 · 2021-07-31

@mattias norlander I found the issue is happend while using new toolchain(gnu-tools-for-stm32_9-2020-q2-update...). If i switch back to the other installed toolchain (2018), it works fine. I saw you solved some toolchain issues, so could you help to...

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STM32H750 USB fail, fail rate 1/300

Question about CMSIS driver

assertion "REENT malloc succeeded" failed

TextArea shows extra pixels randomly

Tearing effect happens randomly after reboot

Re: Question about CMSIS driver

Re: Question about CMSIS driver

Re: assertion "REENT malloc succeeded" failed

Re: assertion "REENT malloc succeeded" failed

Re: assertion "REENT malloc succeeded" failed