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ADC reading change rapidly

Posted on July 25, 2014 at 00:44Ｉｎ　�?ｙ　ＡＤＣ，　I　ｕｓｅ　__IO uint32_t uhADCxConvertedValue，　ｂｕｔ　ｔｈｅ　ｒｅ�?ｄｉｎｇ　ｃｈ�?ｎｇｅ　ｒ�?�?ｄｉｌｙ　ｅｖｅｎ　ｔｈ�?ｕｇｈ　ｔｈｅ　ｒｅ�?ｌ　ｖ�?ｌｔ�?ｇｅ　ｄ�?ｅｓ　ｎ�?ｔ　ｃｈ�?ｎｇｅ，　ｗｈｉｃｈ　ｉｓ　�?．８５４�?�?．８５５． Ｐｌｅ�?ｓｅ　ｈｅｌ�?

Linda by • Associate II
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DSP Sampling Rate, FFT Size, and Buffer Size

Posted on July 25, 2014 at 21:46Hi, Can someone please throw some ideas on what might be the problem with what I am seeing  / doing. Here are the relevant details. 1 - Using an STM32F407 processor (Discovery PCB), clock at 168Mhz 2 - Using ADC to sa...

STM32F3 system memory and bootloading

Posted on July 25, 2014 at 10:33Hi, I'd like to program STM32F373s via their usart1 from an STM32F2, though the latter should be irrelevant, I think. The board has the STM32F2 controlling four STM32F373 processors as peripheral controllers and talks...

REGARDING STM32F030F4P6 GPIO configuration.

Posted on July 24, 2014 at 05:13HI,I have faced one problem with PORTF pin configuration (PF0,PF1).My GPIO configuration:RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE); InitGpio.GPIO_Pin = (GPIO_Pin_0 | GPIO_Pin_1 ); InitGpio.GPIO_Mode = GPIO_Mo...

chowdaiah by • Associate II
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interfacing external oscillator to STM32F407igt6

Posted on July 25, 2014 at 12:44Hi all,         I have to interface external oscillator to stm32f407igt6 which is having 16Mhz internal frequency and i need to boost it to 168Mhz frequency by connecting a 25Mhz external  oscillator so can anyone giv...

ecmanja by • Associate II
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  • 2 replies
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STM32F4: GPIOx_AFRL/H value vs. GPIOx_MODER AF mode

Posted on July 25, 2014 at 02:53What is the use of the GPIOx_MODER Alternate function mode?  Is it needed when an appropriate non-zero value is put into GPIOx_AFRL/H?  Is the GPIOx_MODER alternate function mode value only needed for those few altern...

picguy2 by • Associate II
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Stm32f407igt6

Posted on July 22, 2014 at 12:31I have configured the clock for 168 mhz and for tim2 84 mhz , presaclar = 2 and arr = 200 it is showing 4.6 us in stm32f407vgt6...but in stm32f407igt6 it is showing 24 us .....I have checked the system_init actually i...

sanjib by • Associate III
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F4 FPU interrupt vector

Posted on July 24, 2014 at 02:26STM32F4xxx Reference Manual, DM00031020 rev 6, has the �FPU� interrupt vector at position 81, address 0x00000184 (or 0x08000184 depending on how one views low ROM).  I found no documentation about what this vector is ...

picguy2 by • Associate II
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  • 5 replies
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Double buffer DMA

Posted on July 24, 2014 at 22:55Hi,I am trying to develop an application for STM32L series. I need to use DMA in double buffer mode. I found information in the reference manual for a double buffer circular mode which uses a single DMA buffer with ha...

s7v7n92 by • Associate II
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  • 3 replies
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