About Kuikui

Kuikui · 2020-12-01

Hello,I used to work with IAR.In IAR call stack, if ever you break into an ISR, the call stack shows you where you were in the "main" code just before the ISR fired.Now, with STM32Cube MX, the call stack only shows the call stack since the root ISR ...

Kuikui · 2020-11-17

Hello,I've spent 3 days understanding why my USART could not communicate correctly.The answer : the HSI16 of STM32L552 is out of specs.Steps to reproduce :start a project running on HSI16Output HSI16 on MCOMeasure frequencyI've measure the frequency ...

Kuikui · 2017-08-23

Posted on August 23, 2017 at 17:55Hi,I'm using an STM32F446 @ 168MHz.APB2 Frequency = 84 MHzSDIO_CK frequency = 12MHz @ 4-bit lines = 48 Mbit/secShoud give a reading throughput of approx 6MBytes/sec.But using ST's SPL, reading 1 block ( of 512 bytes...

Kuikui · 2017-08-17

Posted on August 17, 2017 at 12:07Hi,I'm using USB with SPL on an STM32F4 system.If I do this :while(1){ PWR_EnterUnderDriveSTOPMode(PWR_LowPowerRegulator_UnderDrive_ON, PWR_STOPEntry_WFI);}Then my system power consumption is 1.6mA.But if I do thi...

Kuikui · 2017-07-04

Posted on July 04, 2017 at 09:34Hi,I have an STM32F446 + external PSRAM.Everything's working fine, but it seems that I have a bug in my software that sometimes (hard to reproduce) breaks the connection between the STM32 and PSRAM.When it is the case...

Kuikui · 2020-12-02

Hello Mattias,Thank you for your answer.Device : STM32L552 with TrustZone disabledDebug probe : ST-Link V2call stack displays normally (up to the "main" function) when not in ISR (see below)call stack only shows functions up to the root ISR function,...

Kuikui · 2020-11-17

Hi clive,Thank you for your answer.The HAL code is running fine, and is writing values to HSITRIM as expected.We had to manually test different values, and HSITRIM set to 63 seems the best value.Looks like there's a bug to fix within STM32 Cube ?V.

Kuikui · 2017-08-23

Posted on August 23, 2017 at 20:32Thanks Clive.I understand there can be some 'seek time', but doing this :1. ReadSingleBlock N2. Wait 1ms3. ReadSingleBlock N+1Step 1 gives 500µs, step 3 gives also 500µs .. wherease ReadMultiBlock (N and N+1) gives ...

Kuikui · 2017-08-23

Posted on August 23, 2017 at 19:10I've found the cause of the bad throughput (but not the reason).I tried to read 2 blocks with the multiblock function and I was surprised to see that the time was not 1ms, but about 520Âµs..So I had a look at signal...

Kuikui · 2017-08-20

Posted on August 20, 2017 at 14:51I solved it by doing immediate register writes :*((uint32_t*)0x50000038) = 0; *((uint32_t*)0x5000000C) = 0x40001440; // Remove SRPCap *((uint32_t*)0x5000000C) = 0x00001440; // Remove FDMODNevertheless, this still do...

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Finding the function beeing interrupted

STM32L552 HSI16 out of specs

stm32f4 bad sdio throughput

STM32F4 extra power consumption in STOP mode due to USB

STM32F446 and FMC stops working

Re: Finding the function beeing interrupted

Re: STM32L552 HSI16 out of specs

Re: stm32f4 bad sdio throughput

Re: stm32f4 bad sdio throughput

Re: STM32F4 extra power consumption in STOP mode due to USB