Resolved! CDC Standalone example UART or USART
Is the cdc standalone example for asynchronous uart mode or synchronous mode?
Forum Posts
STM32 usb bus powered limitation
We are currently developing a portable device with a STM32F4 display and so on. It is usually powered with non-rechargeable batteries (4x AA LR6). It consumes at least 140mA and max 450mA. As everyone has a micro usb cable and power plug, we thought ...
Programming BRR Register
Hi,how can i program the BRR Register in the USB Device CDC Standalone example for STM32F4xx?The Example code uses UartHandle.Init.BaudRate = 9600;How can i directly access to USART_BRR Register?
f_mount is returning FR_NOT_READY when I am trying to write some data on to an SD card. It is neither working for 8 GB SD card, nor for 32 GB SD card.
This is the snippet of the code that is showing me the error. It has been written just above the while(1) function.Also, I have attached the whole code in the attachments. FATFS myFATFS; FIL myFILE; UINT testByte; if (f_mount(&myFATFS, SDPath, 1) == ...
How can I test this entire Boot loader receiving application software over SPI for STM32F207 X and Y version chip , and how to check if my IC is STM32F207 X and Y version .
How can I test this entire Boot loader receiving application software over SPI for STM32F207 X and Y version chip , and how to check if my IC is STM32F207 X and Y version .I am working with STM32F207 as making it as Slave SPI and using another Master...
get problem in USB audio device
Hi,I'm working in an audio project. We use stm32f407 like a USB audio device to get audio data from PC then send out by I2S module. We are using stm32f4 Discovery kit and STM32cubeMX. After generate code, i change nothing and flash to Kit; my PC ide...
Resolved! Difference DMA and IT?
Hi,i am a newby with STM32what is the difference between the three functions:HAL_UART_Transmit_IT,HAL_UART_Transmit_DMA,HAL_UART_Transmit
Is it possible to Boot from system memory even if BOOT0 is connected to GND?
I have a question about internal bootloader in STM32L073 family. I have already made PCB with BOOT0 connected to GND (to boot from user flash). I would like to use RDP level 1. I jump to internal bootloader from my application (after receiving specia...
HAL_I2C_MasterTxCpltCallback does not report transfer size/count
Hello,I'm new to the forum. I have a Nucleo-L476RG board and I use Keil with Keil::STM32L4xx_DFP 2.1.0 to program it.During the debug I notice that after the HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, ...) function call the hi2c->XferSize an...
Can we deal with odd memory addresses and odd data length in case of STM32 custom bootloader?
We are writing a custom bootloader on STM32F102 and weknow we can write the flash memory in 16 bit wide steps.We use now a continous binary flash image, so if it's lengthwould be odd we can concate one byte easily. In near future we would like to use...
