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trying to understand EXTI example code

Posted on September 20, 2012 at 03:51I have EXTI example running on my stm32f4 board but I am having trouble changing the PIN which causes the interrupt. Here is the initialization method:void EXTILine0_Config(void)  {        GPIO_InitTypeDef   GPIO...

arro239 by Senior
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Max input ADC below Vss F411

Posted on March 26, 2015 at 15:01I was wondering what the negative input can be on an ADC pin. We have an analog signal that can be very rare -38mV for a short moment. In the datasheet page 60 of the F411 i can only find Absolute maximum ratings: In...

Compatibility between STM32F427 and STM32F446

Posted on March 26, 2015 at 14:47I have an STM32F427 / LQFP144 design and am interested in migrating to the STM32F446. What changes do I need to consider (hardware and software)? Primary Peripherals: SDCARD (SDIO), Codec, SDRAM(16M x 16bit), USB (as...

ajgboomer by Associate III
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change endian type FATFs

Posted on March 26, 2015 at 11:58i am a beginner in microcontroller coding i was playing with fatFS recently, i wrote a loop to continuously write 0x1234578    in hex form in file but from file i am geting output as  78 56 34 12 78 56 34 12i know th...

scholar by Associate II
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STM32L clock battery backup

Posted on July 07, 2013 at 22:56The STM32L series does no have a dedicated pin for a battery backup to keep the RTC running when the supply is removed.What is the recommended way to provide battery backup of the RTC for this series? #rtc #battery...

Migration from Freescale

Posted on March 25, 2015 at 07:58HelloI have been using Freescale 8-bit for all of my projects.My most used device was https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB0QFjAA&url=http://cache.freescale.com/file...

abhijit by Associate
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Will the STM32CubeMX support HID+CDC composite device

Posted on March 26, 2015 at 10:08Hi, stm32 guys,Will the STM32CubeMX support HID+CDC composite device for stm32L152?I can find the HID+CDC composite device sample code on STM32F0x2.But my stm32L152 project is build on CubeMX base, the function name ...

STM32F4, Could I extend a string with sensor value?

Posted on March 25, 2015 at 07:03Thank for your look and help. I want to send a string ''&sharp1250♯'', and the 1250 is the sensor value. So I do some try.             uint16_t ch=1250;           uint16_t Value[4];           char str[10] = ''♯'';   ...

STM32L053 - Cannot identify target

Posted on March 19, 2015 at 14:25Hi I´ve problem with programming stm32l053, after debug get error ''Cannot identify target as a STM32L family''. I´m using Eclipse Indigo under Linux, st-link/v2 debugger, OpenOCD, arm-none-eabi-gdb. My reports Open ...