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fhu.11 · 2024-07-31

Hi All!I have a issue about SPI DMA communication on NUCLEO-H563 Board. Details are as follows.My Configuration of STM32CubeMx as shown in the figure1 and 2.figure1figure2I call the function of HAL_SPI_TransmitReceive_DMA(）, it comes to line 2212 of ...

fhu.11 · 2022-03-04

The chip is STM32G491. The NRST pin is suspended. The option byte is default value.I find my board doesn't work after power up, so I measure the waveform of VDD and NRST as figure 1 below.Figure 1The green wave is NRST and the yellow wave is VDD. The...

fhu.11 · 2022-01-10

Here is my code in main() to config field NRST_MODE: HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock(); gFlashOBST.OptionType = OPTIONBYTE_USER; gFlashOBST.USERType = OB_USER_NRST_MODE; gFlashOBST.USERConfig = FLASH_OPTR_NRST_MODE_1; HAL_FLASHEx_OBProgram(&...

fhu.11 · 2021-12-06

HiI want to test the execution speed of SIMD instruction. My demo as below.16-bit addition, for example.I find the instruction __SADD16() in cmsis_gcc.h. The execution time using __SADD16 is 27us and the time without __SADD16 is 23us. It seems like ...

fhu.11 · 2021-09-24

I learned from section 2.5.7.2 of the STM32CubeIDE user manual that it can be done by modifying the .ld flie and .s file and using __attribute__((section(".RAM_Code"))) declaration functions. But i still confuse in modifying the .s file. I wonder how...

fhu.11 · 2024-08-01

Here is my code and .ioc file /* SPI1 DMA Init */ /* GPDMA1_REQUEST_SPI1_RX Init */ NodeConfig.NodeType = DMA_GPDMA_LINEAR_NODE; NodeConfig.Init.Request = GPDMA1_REQUEST_SPI1_RX; NodeConfig.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST...

fhu.11 · 2022-03-04

I think code doesn't run to Reset_Handler because the reset signal doesn't be released yet.And I already erase all flash before I do this experiment.

fhu.11 · 2022-03-04

BOOT0 already pulled low My project is use NRST-pin as a GPIO so there is no pull-up resistor or pull-down capacitor.It looks like predictable. VDD rise time below 600us will cause remaining reset and above 600us will work well.I don't understand how...

fhu.11 · 2022-01-10

When I just call HAL_FLASHEx_OBProgram, I find the NRST_MODE in Flash_OPTR is already changed to 2. Why it doesn't work?I check the reference manual and find some description as followI don't know how to understand internal option register. What is t...

fhu.11 · 2022-01-10

Thanks, you succeed resolving my question!Dose HAL_FLASH_OB_Launch modify the default value of NRST_MODE in the factory rom? Because every times I reset my mcu before I call HAL_FLASH_OB_Launch, the option bytes is the default value.

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STM32H563 SPI DMA issue

If the chip is powered on too quickly, the chip remains in the reset state

I need to use PG10-NRST as a GPIO. So I check the Reference manual to find out how to do it. I find that it can be done if I modify the field NRST_MODE to 2 and I really do this. But it doesn't work.The mcu still reset when PG10-NRST comes a low level.

STM32G474RE NUCLEO board SIMD instruction test

I wanted to know how to speed up the execution by putting the code in RAM.

Re: STM32H563 SPI DMA issue

Re: If the chip is powered on too quickly, the chip remains in the reset state

Re: If the chip is powered on too quickly, the chip remains in the reset state

Re: I need to use PG10-NRST as a GPIO. So I check the Reference manual to find out how to do it. I find that it can be done if I modify the field NRST_MODE to 2 and I really do this. But it doesn't work.The mcu still reset when PG10-NRST comes a low level.

Re: I need to use PG10-NRST as a GPIO. So I check the Reference manual to find out how to do it. I find that it can be done if I modify the field NRST_MODE to 2 and I really do this. But it doesn't work.The mcu still reset when PG10-NRST comes a low level.