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Forum Posts

trigger adc after counter is reached

Posted on March 21, 2016 at 23:50Hello there, I was wondering either in STM32F4 it is possible, to get a similar functionality to C2000 one, that can trigger an ADC conversion after certain counter valueon a timer is reached, like here: https://www....

Need help understanding error

Posted on September 02, 2015 at 15:02Hi I am using the STM32F303RE and SdPeriph library v1.2.3. Whenever I build my code I get this error: STM32F30x_StdPeriph_Driver\src\stm32f30x_rcc.c(994): error:  #268: declaration may not appear after executable...

why would SetSysClock enable the HSE for stm32L1x

Posted on March 24, 2016 at 21:46I am developing a low power application for the stm32L151RC and after a lot of debugging noticed that the system_stm32l1xx.c file does a  RCC->CR |= ((uint32_t)RCC_CR_HSEON);Why would it do that. Why not just continu...

HSI never ready on STM32F4 Discovery

Posted on March 24, 2016 at 15:33I'm trying to set up the RTC on the Disco, have read some documentation, and looked at the many examples that are out there. But I fell at the first hurdle:      RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);    ...

Digital Filtering Problem

Posted on March 23, 2016 at 14:26Hi, I am using STM32f405, and CMSIS dsp library, to filter a signal acquired by ADS1278. The filter used is a 12th order bandpass butterworth IIR filter whose coefficients generated by matlab, and my signal is 2430Hz...