Hello everyone,I am working on RTC of STM32F042C6. But I have a calibration problem. This is my measurement mechanism:For example: I’m measuring a +23,2 ppm error. I’m writing the value 24 (+23,2 ppm / 0,954 = 24 clocks) for the CALM bits of the CALR...
I cannot find any schematics, what kind of crystal. I want to connect 20 MHz. It seems it is as high as it can go. The datasheet does not say exactly what o connect.Some of the STM have two pins to connect extearnal oscillator but this one has just o...
Hello, dear collegues!Please help me with I2C!I use I2C to transfer data between 2 controllers: STM32F051C8T6 and STM32F100RB.When I use laboratory power supply, it works without some problems. But when I use external power supply based on the pulse ...
Trying to send over USART1 at 19200 bit/s.USART is resting in receive mode (RE==1, TE==0).After switching to transmit mode (TE:=1, RE:=0), we observe a ~500 us delay between storing and transmitting of first character. Subsequent chars are transmitt...
I'm developing a bootloader for an STM32L0 MCU that will jump to one of two or more application partitions in flash. I'm using IAR 8.22.2.To make the application binaries position-independent, I've compiled them with the -ropi option. I've also modif...
Hello,I would like to freeze the functionality of the IWDG while the microcontroller is in STOP mode, because I want stop time greater than 32 seconds. I read the documentation and I built the following code: FLASH_OBProgramInitTypeDef pOBInit; pOB...
I am working on stm32f103c8 using its SPI 2peripheral to communicate to slave device which is also stm32f103c8 using SPL library . master unable to transmit 8 bit data stuck on txe flage which is remain reset mode.
I'm involved in the developmentof a project where I will use STM MCU that has the capability of multiprocessor communication ("Multiprocessor communication").This type of communication allows multiple USARTs to be connected on the same network and on...
Hello,i am trying to generate arbitrary waveform. But it still dose not work. I think it's up to the configuration. I have created a array of 6 words for two waveform patterns to be send to TIM1 channel 1 (TIM1_ARR, TIM1_RCR, TIM1_CCR1) This is how t...
