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Forum Posts

Interrupt service routine and C++

Posted on November 18, 2012 at 12:03 Hey everyone, I'm working on the STM32F4DISCOVERY with CoIDE 1.6.0 in C++. I have an interrupt on TIMER4 overflow, and so I put the interrupt service routine (void TIM4_IRQHandler(void) {}) in the main.cpp....

100pin device FSMC and Graphic LCD

Posted on November 23, 2012 at 12:12HI, I'm I right to assume that in 100pin devices FSMC can be used only in multiplexed mode as Address bus is not available on this chips? Or one should drive Address lines in FW. So that A0 used as RS signal for ...

dimax by Senior
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change wave frequency with pot ..how?

Posted on November 22, 2012 at 20:43Hi. I hope someone can help me here...I have been looking at the STM32f4 dac signal generation code. I would like to know how I could change the frequency of the output waveform with a potentiometer or, using the ...

sts0340 by Associate II
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need Basic example for ADC triggered by Timer with STM32F1

Posted on November 23, 2012 at 16:41Hello everybody, I'm beginner with STM32F1, can any one share with me a basic example of showing how to trig ADC by a Timer? I didn't find any example in the ANs and standard lib? Could you help? Thanks in adva...

hassen by Associate
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STM32F4Discovery not working without external power?

Posted on November 23, 2012 at 14:34hello,my stm32f4discovery board started not working without connecting external 0-5V power supply to GND and 5V pins.when i plug usb only, nothing happens, none of the leds light. if i connect external power addit...

what is _impure _ptr ? why am I getting this error ?

Posted on November 22, 2012 at 21:53hello forum I am trying to compile a C program for STM32F4 microcontroller with Eclipse + yagarto compiler I get the error;undefined reference to `_impure_ptr' there is no function ''impure_ptr'' in whole project...

PC host <-> STM32 communication, looking for advices

Posted on November 23, 2012 at 13:52Hi For future projects, I'm looking for the most easy to deploy and foolproof way to communicate between a STM32-based system (mostly L1, some F1) and a PC host. There seems to be 4 ways (Ethernet is not available...