About JChen.24

JChen.24 · 2021-12-27

Hi,I am using STM32F746 discovery board. I enabled FreeRTOS task and it is running fine. After I start ADC DMA function by enabling DMA continuous request mode and calling HAL_ADC_Start_DMA(), the RTOS task stops running. The ADC conversion stops the...

JChen.24 · 2021-12-01

Hi,I am using STM32F746NG discovery board. I try to setup 60 micro second delay. With ST-Link debugger, the 60micro second delay is fine. But when I cycle the power, the firmware does not run.When I comment out the delay function DWT_Delay_us(), firm...

JChen.24 · 2021-10-05

Hi,I am using STM32F746G_DISCOVERY board.In the QSPI_PreInitConfig example, how to put const array data to QSPI flash? I try to declare as follows, but cannot pass compiler. error: 'img2' causes a section type conflict with 'GpioToggle'. I notice th...

JChen.24 · 2021-09-30

Hi,I am using STM32F746G_DISCO board to create different pages for the LCD. I see only one page with 4 tabs project already takes 300KByte flash memory code space. The STM32F746 only has 1MByte flash. So I like to store the LCD graph code related mo...

JChen.24 · 2021-09-28

Hi, In the STM32F746G_DISCO board, FMC_SDRAM example, how to decide these parameters? Which section does it specify from sdram MT48LC4M32B2B5 datasheet? SDRAM_Timing.LoadToActiveDelay = 2; SDRAM_Timing.ExitSelfRefreshDelay = 6; SDRAM_Timing.SelfRe...

JChen.24 · 2021-12-27

Thanks for the good suggestions. I make the buffer bigger to slow the DMA interrupt and it works fine now.

JChen.24 · 2021-12-27

Thanks for the comments. I setup the DMA interrupts and ISR already. The ADC can get the correct readings each time.

JChen.24 · 2021-12-02

Thanks for the help, everybody!It works.

JChen.24 · 2021-12-01

I find the problem. If use micro USB as power source, it detects as usb device, so firmware no run.I use external power source of 5V. Everytime firmware runs.

JChen.24 · 2021-10-06

Thanks for the help!I figured out. I should put array in .h file, not c file.

User statistics

User Activity

ADC DMA continuous mode stops FreeRTOS task.

STM32F7 microsecond delay problem

How to save const data array in STM32F7 QSPI memory?

Can QSPI flash store large program memory code?

STM32f746G_DISCO board sdram configuration quesiton

Re: ADC DMA continuous mode stops FreeRTOS task.

Re: ADC DMA continuous mode stops FreeRTOS task.

Re: STM32F7 microsecond delay problem

Re: STM32F7 microsecond delay problem

Re: How to save const data array in STM32F7 QSPI memory?