STM32 MCUs products

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Posted on August 04, 2017 at 15:16hi,i have STM32F401 with uart1 configurate in DMA and i would like to add uart2 (in DMA or not)is it possible to do it?how i manage the IT flag?UART1 DMA, call fct :void HAL_UART_TxCpltCallback(UART_HandleTypeDef *U...

DMA uart transfers

Posted on January 27, 2017 at 20:06I have been thrust into a situation where I realize I am in over my head. Eventually I think I will figure it out but could use a leg up with this STM32F437 device. I know little about it and especially it’s dma.Th...

John Hite by Associate III
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STM32F4 + OV9655

Posted on October 03, 2017 at 20:25Hello, fellow developersI am using STM32F4 Discovery board with OV9655 camera module. I use the sample codes given and everything works all right. Right now, I am going to tune the qualities of the camera images, s...

Eric Lin by Associate II
  • 2 replies
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STM32F407 change to 25MHz usart3 baud rate problem

Posted on October 05, 2017 at 15:38Hi all,I am using STM32F407VET6 with 25MHz crystal by STM32Cube_FW_F4_V1.16. I have changed HSE_VALUE to 25000000 in system_stm32f4xx.c and RCC_OscInitStruct.PLL.PLLM = 25 in SystemClock_Config main.c, but I found ...

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Why does HAL_UART_Receive keep crashing?

Posted on September 26, 2017 at 13:32Hi. Can someone please help me see where I am going wrong? The program will transmit the UART message but crashes when it gets to the 'HAL_UART_Receive' function. I am using the STM32F746 Discovery Board.UART_Han...

A question about UART interrupt

Posted on April 18, 2017 at 14:45In order to configure UART interrupt receive, I put HAL_UART_Receive_IT function in HAL_UART_RxCpltCallback.but it doesnt work. below is my callback code.void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){ uint8...

DMA questions

Posted on October 07, 2017 at 14:12Hi,I'm learning about stm32 MCU handling. stm32f0-discovery platform with stm32f072rb MCU.I have a questions about DMA.1. How to modify transfer direction? I try to modify DIR bit in CCMR1, but setting is rejected....