I'm using HAL library for stm32f4 (V1.7.1) and trying to understand how HAL_I2C_Master_Transmit works. This function transmits a master to slave packet on SDA line. In the stm32f4xx_hal_i2c.c code after sending slave address there is a loop (while(hi...
Is the cdc standalone example for asynchronous uart mode or synchronous mode?
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 ...
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?
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 .I am working with STM32F207 as making it as Slave SPI and using another Master...
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...
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
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...
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...