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Help to create large buffers in RAM

Posted on August 12, 2013 at 21:48 Hello guys, I need some help. I want to create a large buffer in the sram and I'm having some problems with the compiler. I want to use the 112KB SRAM memory (pag 52 - RM0090) for my buffer. But when I w...

Sample a timer on EXTI interrupt

Posted on August 12, 2013 at 20:35Hi,I want to sample a fast timer (125ns) when an EXTI interrupt occurs, before the interrupt is handled. Later when the interrupt is handled i want to be able to compare the actual value of the same timer and measur...

STM32F3xx: I2S master clock

Posted on August 12, 2013 at 14:30Hi I tried to turn on the master clock for the SPI/I2S bus on the STM32F3 microcontroller by setting the MCLK enable variable in the initialization struct for the I2S 2. But I couldn't get any signal on the PA8 or o...

Flash Write Address

Posted on August 12, 2013 at 16:53I'm working on writing one byte to flash at the beginning of my program (the ID of the board).  I have been able to find a lot of examples of people rewriting their user flash and thus using the user address as the ...

mattfox by • Associate II
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Problem with connection

Posted on August 12, 2013 at 15:31Hello everyone! I have annoying trouble with my STM32F0 Discovery. After using GPIO->MODER command is displayed Connect failed, check config and cable connection . What is the reason of that issue and how can I fix ...

michal by • Associate
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  • 1 replies
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Store user data in STM32 Flash or Rom

Posted on August 12, 2013 at 08:10Hello everyone, I am newbie in this forum so please forgive me for any noob questions. My application requires to save 4 double variables offline for next time usage, I think my data is too small to make us use a SD...

cenakhoa by • Associate
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  • 1 replies
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stm32f4discovery, continues adc, noise

Posted on August 08, 2013 at 05:14 I'm sorry, that's probably quite a beaten topic :( I have continues mode ADC running on stm32f4discovery board. static void ADC_Config(void) { ADC_InitTypeDef ADC_InitStructure; ADC_CommonInitTypeDef...

arro239 by • Senior
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  • 6 replies
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FFT function oddities

Posted on August 09, 2013 at 10:42I'm using the ''arm_cfft_radix4_f32(&S, FFTData); '' function to obtain the FFT of an array and then inverse it back after some processing. I have things working, to a point, but with some odd restrictions. Firstl...

STM32F4 USART PROBLEM

Posted on August 09, 2013 at 20:18Hello, everyone.  I am currently playing around with the USART without standard peripheral lib provided by ST (using CMSIS only) and my code strangely works in one MDK project and does not work in another MDK projec...

ran2 by • Associate III
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