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Forum Posts

ISRs and Reentrancy

Posted on May 05, 2015 at 08:48Hi, EDIT: My assumption regarding reentrancy of functions was wrong. The ISRs became active before the buffer structures were initialized. The invalid data caused writes to inaccessible memory. Please disregard the res...

Relation between cycle instruction and clock frequency !!

Posted on May 05, 2015 at 01:14Hi,Let’s start with this example :Let’s suppose I work with an STM32F407VGT6 microcontrollers which his System core clock is set at his maximum frequency which is 168MHZ. According to the ARM website the CORTEX-M4 asse...

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Where are the libraries and HAL tools for the STM32F2

Posted on May 04, 2015 at 21:36I have a STM32F207VC evaluation board. Most libraries I find are for STM32F1 and F4. Is the F207 obsolete. Is there something newer. Is there a good hardware initialization SW/tool for this CPU. Edit: I use an old Keil...

LMI2 by Lead
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Single GPIO initialization for both F1 and F3/F4 series

Posted on May 04, 2015 at 20:43Hi, I'm trying to write a custom initialization for GPIO of F1 and F3/F4 series. I've defined most of the MODE and IO types but stuct at alternate input mode. F1 series puts the pin to input mode while F3/F4 just sets ...

Can't set/reset a bit

Posted on May 04, 2015 at 11:45Hello everyone. My target is STM32F091C I want to send something using SPI and after that make an impulse with a bit of my microcontroller. On my scope I see that I send well the data but the impulse is not generate. ...

raphael by Associate II
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CubeMX, FreeRTOS and GPIO ??

Posted on April 27, 2015 at 07:42 Guys, I tried to test blinking LED using RTOS and cubemx, but can't make it until now ? what do I miss here ? Please have a look on the main.c .. Thanks for reading and giving a clues...

ADC channel reading

Posted on January 23, 2013 at 16:16Hi guys,I'm using two channels of ADC1 to convert two different inputs, i'm using the interrupt mode of End Of Conversion. I don't know how to get these values into two different variables.Please take a look at my ...

sherif by Associate II
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