STM32 MCUs Embedded software

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MSC BOT state machine problem

Posted on November 05, 2012 at 07:45 Hi, I have been using the the MSD class driver for usb host on an STM32f4 board. The host seems to work fine for some time, but after say 200 read/write ops it gets stuck at: void USBH_Process(.......

tavish by Associate II
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STM32F4 composite USB device

Posted on August 06, 2014 at 10:12 Hi, I'd like to implement a composite USB device with MSC + a custom class. I'm using a STM32428I-EVAL board and some code generated by STMCube. MSC alone is working (with bulk endpoint 0x8...

franck by Associate II
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Hal bug using rtos

Posted on August 05, 2014 at 12:50I imported an example with  RTOS (FatFs_uSD_RTOS) and I found some bug. In function HAL_Init() is called HAL_SYSTICK_Config()  but  SysTick_Handler()  call xPortSysTickHandler() before osKernelStart() so we have an ...

Wrong register BRR in usart

Posted on July 30, 2014 at 15:16Hi, I'm trying to initialize a usart, and read some data on a Terminal. The terminal receives some data but not the good one. The problem seems to be a clock problem, and the usart register BRR looks wrong. Moreover, ...

maxime by Associate II
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STM32F407 Channel Transmit error problem

Posted on July 31, 2014 at 16:02Hi,I'm using the STM USB Library version 1.1.0, working on coocox IDE. Here my problem is in the enumeration state i'm trying to get device descriptor for the MSC class device, at the time when i'm writing the setup p...

chandu1 by Associate II
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SSD1289 STM32CubeF4

Posted on July 29, 2014 at 18:16I am a beginner with Stm32f4discovery (version stm32f407vg). It took me a long to get the graphic LCD work (copying and rewriting some code from others). My problem, I want to use it with FreeRTOS. But My FreeRTOS wor...

Wrong values in debugger

Posted on July 21, 2014 at 13:34Hi everyone,I'm using CooCox with a STM32F4. I have a big issue with the Coocox debugger:static STEP_MODE val_step_mode = FALSE;1  if ((Get_Core_Current_Track()->step_mode)  !=  val_step_mode)2  {3         val_step_mo...