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Forum Posts

I2c peripheral adding address byte ?

Posted on December 31, 2016 at 00:25Using I2C peripheral on F0 micro.  When I restart the I2C bus it sends the slave address plus an extra byte then my data, after that first transmission it doesnt send the extra byte, just the after the first Resta...

How to calculate delta T ??

Posted on December 29, 2016 at 11:57I have a 10DOF sensor that is calculating 3 angles(roll,pitch,yaw). I need to know how can i calculate the time of execution of my code so i can get the delta t, like in arduino we used as i remember a function ca...

KalmanFilter C code error

Posted on December 30, 2016 at 12:04 I am using stm32f discovery board. I am trying to fuse Acceleromoter and gyroscope using KF. And here is a code i included that suppose to do this. #ifndef _Kalman_h #define _Kalman_h struct Kalman { /* Ka...

WIFI on STM32F

Posted on December 30, 2016 at 18:59looking at the STM32F103REY6 chip on the SPWF01SA, it has 3 SPI's. Are all 3 of these available to be programmed (I don't see them mentioned in the datasheet) or is it possible to use one of the SPI's MOSI/MISO,SC...

Resolved! Forcing static initialized arrays into FLASH (not in SRAM)

Posted on December 29, 2016 at 17:57THIS ISN'T A QUESTION - IS A RESULT.I was having issues getting some static arrays to stay in FLASH, not SRAM. Since they NEVER change, allowing them to load into SRAM just means the exist in both flash & SRAM (ak...

[BUG] FatFS + SDIO(DMA) L4

Posted on December 28, 2016 at 21:45Drivers supplied with CubeMX don't check if data that fatfs tries to write is properly aligned (32bit) this results in misaligned address send to DMA controller which is forced to be realigned and results in wrong...

ChrisH by Associate III
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Question regarding timer1 lib functions

Posted on December 30, 2016 at 00:28Hello,i am working on a BLDC motor control, based on hall sensors for rotor position.I am starting to write some code, and came across a example on googlethe function i am refering is this : TIM_SelectOCxM(TIM1, T...

Bogdan by Senior
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Problems with ADC interrupt

Posted on December 27, 2016 at 06:55 I am trying to generate an instantaneous PWM signal using ADC Single channel interrupt on stm32f103rbt6 nucleo board. I want to vary the speed of the dc motor using the instantaneous adc interrupt. But I am ge...

STM32F4 Ethernet not responding after power up

Posted on December 29, 2016 at 13:48We have a STM32F4 MCU on our boards, and recently have witnessed some strange behavior: The ethernet doesn't work after powering up the board. No pings, no TCP connections. After pressing the reset button on the b...