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ethernet controller with MII interface

Dear Sir, Good morning!I use STM32F407vgt6. I need chip ethernet controller with MII interface from STM. I previously used DP83848 from Texas Instr. Please recommend me ethernet controller from STMTIASincerely,Vladimir Naumenkov

Vo1 by Associate
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Resolved! STM32F407ZGT7 reset when write to SPI1 DR

When i debug SPI1 on STM32F407, program will jump to 0x00 when write DR register, MCU reset and loop continuely. when i measure the SCLK signal using oscillator, SCLK is always high after SPI1 is enabled  When i write to DR of SPI1, the code jump to ...

SPI too slow

Hi,I am using SPI on STM32H74II MCUFirst I am using a software NSS and not a Hardware NSS because it doesn't work.I need to transmit 1 byte and receive 1 byte, the two commands one after another see the simple code below : RFID_SS_ENABLE;   statu...

JKhal by Associate III
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  • 11 replies
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Evaluation of commented variables

/* USER CODE END 4 *//*void calculate_DAC_OUTPUT_Freq(void){sysclk = HAL_RCC_GetSysClockFreq();//uint32_t data = SystemCoreClock;pclk1 = HAL_RCC_GetPCLK1Freq();prescaler_bits = (RCC->CFGR & RCC_CFGR_PPRE1) >> RCC_CFGR_PPRE1_Pos;timer_clock = pclk1;if...

Resolved! Timer Frequency is not predictable

I am using STM32L496ZGT6P. When using DAC along with DMA to generate voltage and frequency of my desired range. But I am unable to get hold of the frequency setting. Sysclk I set is 4Mhz. 20 is prescaler value, 4Mhz/20 = 200000.This is further divide...

why STM32F303 stop at HAL_TIM_Base_Start_IT(Help)

I found a issue.if the code isHAL_PWR_DisableSleepOnExit();HAL_TIM_Base_Start_IT(&htim2); it will stop at "if (IS_TIM_SLAVE_INSTANCE(htim->Instance))", but i didnt set break point at here.if i change code:HAL_TIM_Base_Start_IT(&htim2);HAL_PWR_Disable...

Zuo by Associate
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  • 2 replies
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Resolved! Replacing STM32F103CBT6(U2) on the STM32F407G-DISC1

The U2 on my STM32F407G-DISC1 is shorted and needs to be replaced.Is the STM32F103CBT6(U2) pre-programmed, or can I just replace it with a new blank STM32F103CBT6 and it gets programmed when you DFU firmware the STM32F407G-DISC1 board.Hardware isn't ...

Resolved! Wrong Data in STM32F4 + UART using LL (low layer) library

Hi,I'm trying to run STM32F429  using LL library to send data periodically.as a start, i'm sending 1 char every 1 sec, but  i'm receive a wrong char (i send 'A', i receive something not clear), and when i call my custom systemClockConfig function, th...

Skane by Associate III
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  • 13 replies
  • 3 kudos