STM32 MCUs Embedded software

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STM32L0 USB Connect-DisConnect Event

Posted on June 13, 2016 at 11:32Hi everyone, I developed USB Hid Class on STM32L0 series.Everthing working properly but I  could not get the USB Connect and Disconnect Event.I am using CubeMx and HAL_PCD_ConnectCallback  and  HAL_PCD_DisconnectCallb...

STM32F407 custom bootloader problem

Posted on June 14, 2016 at 14:38Hello! I am working in a project that I want to use a custom bootloader for firmware update of stm32f407, I had developed for stm32f107 and all works fine, but for STM32F407 I getting some problems. Below I posted th...

giovani by Associate II
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STM32F407 USART2 do not receive

Posted on June 08, 2016 at 15:51Hello, I have configured USART2 to communicate as RS422. Rx is connected to PA.3, Tx to PD.5. I need baudrate 921.600 Baud. There is no problem send anything one or more bytes. I can not receive anything from Rx (PA.3...

Why are HAL Lookup tables located in RAM?

Posted on June 14, 2016 at 11:10I notice that the HAL locates some lookup tables in RAM. For example, in stm32f1xx_hal_rcc.c:uint32_t HAL_RCC_GetSysClockFreq(void) { &sharpif   defined(RCC_CFGR2_PREDIV1SRC)   const uint8_t aPLLMULFactorTable[14] = {...

STM32F4 add endpoint to USB

Posted on June 10, 2016 at 11:52 I'm doing a project where I use a NUCLEO-F446ZE as a USB device. I'm implementing the CCID class. I used the template class and some code from VCP. This way some endpoint are already configured like Bulk ...

thom_as by Associate II
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usb audio endpoint single buffer possible?

Posted on June 10, 2016 at 05:54Anyone tried before USB audio playback with endpoint single buffer only? or must double buffer?reason is I use STM32F072 and it's USB buffer only 1K. My device will have playback and recording at 48KHz 24bits. So if m...

sgpiqx by Associate II
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STM32F4 USB VCP (cdc) and DFU

Posted on March 26, 2015 at 11:26Hello,I communicate with an STM32F4 eval board and a host computer by using VCP, I would like permit a DFU by using software.I search the quickly solution to implement both. I hesit between redefine USB interface whe...

Potential Bug in STM32Cube SPI routine

Posted on June 05, 2016 at 19:15Hello,In my senario, a SPI eeprom is connected to a STM32F051, whose SPI module was set to a full duplex master mode. My original code to read a block of data from the eeprom was like this:The problem of this code is ...

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