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Forum Posts

STM32F4discovery measuring a pulse duration

Posted on January 22, 2013 at 16:53 I am having some trouble setting up an external pulse duration measurement on a Timer. Ideally I'd like to capture the duration of just the first incidence of a pulse on the desired pin, but that could require ...

Bootloader Issues

Posted on January 21, 2013 at 10:50having difficulty getting a custom bootloader working. Basically this is a MSD device bootloader, using USB MSD and SDIO Sdcard drivers and Chan FATFS. Note MSD only runs if there is not a valid binary file on disk...

Strange ADC conversion for temp sensor and internal vref

Posted on September 01, 2012 at 05:25I'm running some ADC tests on a VLDiscovery board. The values returned for sampling the internal temp sensor and voltage reference seem to move around in surprising ways. Here's some data:> ADC samples: channel 1...

andyturk by Associate II
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STM32F4 Interrupt Delay Issue

Posted on January 24, 2013 at 08:03Hello,I have been working with STM32F4 Discovery for a while. I haven't had any trouble before but I found some problems that I want to know why it happens. Currently, I'm trying to use external interrupt at 125kHz...

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hslwlim by Associate
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STM32F4 DISCOVERY WAVE PLAYING ABD RECORDING

Posted on January 21, 2013 at 15:10Hello ; I have project where I have to record and play wav files  simultaneously , but it is not clear in the datasheet of cs43L22 if that possibe or not  ; Could anyone confirm that please if possible or not ? R...

sami by Associate II
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  • 7 replies
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Problem with upgrade STM32F0DISCOVERY to V2J16S0

Posted on January 23, 2013 at 17:28Today I update my STM32F0DISCOVERY ST-Link/V2 from version V2J14S0 to V2J16S0. I use an evaluaton version oh KEIL (version 4.60.0.0). Before the update I succeed in set breakpoints in my code. After the update I ca...

Question about Startup Assembly Files

Posted on January 24, 2013 at 00:26I am using STM32F103RF chip, in the startup folder I see a full list of startup_stm32f10x_??.s files, which one is suitable for my case?

romey by Associate II
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STM32F103ZET6 has internal flash, What kind?

Posted on January 22, 2013 at 01:53Excuse me.STM32F103ZET6 is included in my board.Documents from internal flash is being used.I do not know what kind of flash. #stm32-internal-flash-kind

vegito4 by Associate II
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STM32F4, wish list for 2012.

Posted on January 06, 2012 at 19:301 - STM32F405RE / RC 2 - Analog comparator with DAC reference. 3 - Embedded ethernet phyter. 4 - PGA. #least-likely-prediction-for-2013

Asantos by Senior
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  • 21 replies
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External interrupt subroutine not being called !!!

Posted on January 18, 2013 at 10:20 I am trying to write a simple program to toggle an LED at PORTA.3 on trigger by an external interrupt on PORTB.0..a switch is attached to PORTB.0 for changing the state of Port. I have done the initializati...

kunal5959 by Associate II
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  • 10 replies
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