About jhl14

jhl14 · 2021-03-27

Hi In my system using STM32F407, there is a period PWM signal output triggered by external comand. However we find that the phase between PWM singal edge and HSE edge is changed cycle by cycle, is F407 capable to config the phase stable?when received...

jhl14 · 2021-03-16

Hi,Using "STM32F4xx_DSP_StdPeriph_Lib_V1.8.0" to config STM32F407 Uart1 as following///////////////////////////////////////////////////////////////////////////void USART1_Init(u32 baudrate){ USART_InitTypeDef USART_InitStructure; GPIO_InitTypeDef ...

jhl14 · 2021-01-08

Hi Team,Basing on the lastest "STM32F4xx_StdPeriph_Driver" to Read SPI data and then write into external FSMC(8bit) device in the PWM interrupt like following .//--------------------------------------------------------------------------------------...

jhl14 · 2020-10-30

Hi Team,STM32F407 running on STM32F4xx_DSP_StdPeriph_Lib_V1.8.0 with the following init configuration,void USBFIFO_FSMCConfig(void){ FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; FSMC_NORSRAMTimingInitTypeDef p; p.FSMC_AddressSetupTime = 0X00;/...

jhl14 · 2016-07-08

Posted on July 08, 2016 at 13:13Hi Team,Use RTC as timer to restart STM32F030K6 from stop mode every 10mS, Set/Reset a dedicated I/O to show stop and running duration respectively in main loop like following procedure. while(1){ if( RTC_Refresh_Tim...

jhl14 · 2021-03-16

This LOW LEVEL error is resolved by changing the HSE_VALUE to 8000000HZ。 #if !defined (HSE_VALUE) #define HSE_VALUE ((uint32_t)8000000) /*!< Value of the External oscillator in Hz(25000000 default value) */ #endif /* HSE_VALUE */

jhl14 · 2021-01-08

Thank you, JW. You SHORT words exactly shot it. When doing the following change, the problem is gone.//----------------------------------------------------------------------------------------------------void TIM2_IRQHandler(void){TIM_ClearITPendingB...

jhl14 · 2016-07-13

Posted on July 13, 2016 at 09:43Hi Hannibal,After more verification of the issue, we found that RTC running is good when simulating with ST-Link. The issue occurs when using J-LINK. So wet wonder if there is some data setting of simulator affecting ...

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the phase of PWM output signal with HSE clock edge

STM32F407 Uart Byte Received error(higher4bit)

STM32F407 SPI Datasize and FSMC #WR operation DOUBLEs

FSMC_NOE and FSMC_NWE confliction with FSMC external NOR/SRAM read operation

RTC timer is unstable in simulation

Re: STM32F407 Uart Byte Received error(higher4bit)

Re: STM32F407 SPI Datasize and FSMC #WR operation DOUBLEs

Re: RTC timer is unstable in simulation