STM32 MCUs Products

I2C Busy flag after I2C Clock enable, how to solve?

Hi,RCC->APB1ENR |= RCC_APB1ENR_I2C2EN;immeditly after turning on the I2C2 Clock I get a busy flag for I2C2.Its then reset with:GPIOF->MODER |= GPIO_MODER_MODER0_1 | GPIO_MODER_MODER1_1;But when PUPDR is executed, the flag is busy again:GPIOF->PUPDR &...

Regarding HARD FAULT traps. Does the STM32 (or cortex cpus in general) have any kind of memory region that is read-only, and does not issue a hard fault when written to ?

The intend is to detect whether an array (size 256 bytes) is present in RAM at a location pointed to, and does not trap a HARDFAULT when the pointer written to it. A subsequent read from the same location should produce a value different from the val...

what is the best protocol to send arrays I2C, SPI ?

I have array[2000];I am trying to send from nucleo to arduino, it seems if I send bigger than 8 elements it freezes or does nothing. So I have no problem to send array of 8 elements.I know that I could do it piece by piece in a for loop, I would have...

We use STM32F072RBT and STM3232F373CCT for two designs and the designs are ready for the market. We need a USB VID and PID for the products. How can we sub-license a PID from ST? Chris

initialise structure array ??

hello I have a structure arraytypedef struct { uint8_t Line_Add[lcd_lines]; char Line_Data [banks] [lcd_lines] [40]; uint8_t Data_Pos [lcd_lines]; uint8_t Start_Pos [lcd_lines]; ...

I want to cmake built project to my stm32F4~ based board.

I would like to upload a project built with cmake gui in the Window10 to mcu board based on stm32f427II chip. When I build cmake, configure is configured as VS2017, and the result is as shown below. However, to upload to the board, I think I need to ...

RTC alarm problem only with some MCUs

Hi, I have a strange behavior with the RTC alarm only with some MCU. In my project use the STM32L476, when I set the alarm the MCU wake up without problem, but this work fine only with some board. On the other boards with the same MCU and the same FW...

STM32L4 HAL I2C communication

Posted on January 09, 2016 at 20:34Hello.I recently started testing the communication over I2C on a NUCLEO-L476RG board using the HAL API.Looking through the reference manual (http://www.st.com/st-web-ui/static/active/en/resource/technical/document/...

I am having trouble with the function HAL_QSPI_TRANSMIT().

I am using the QSPI on my nucleo STM32F767zi  board to access a WINBOND FLASH chip.  I am using cubeMX 2.61 with IAR compiler 7.80. ​I can access the FLASH chip using HAL_QSPI_COmmand(). I appear to get dat when I issue a command to read the chip and...