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software i2c not working..

Posted on March 09, 2012 at 16:41Want to read my LIS302 sensor with software I2C (bit banging)Hardware i2c works.Here is some code.Please help me with software i2c...http://pastebin.com/d0M9jRaY

hitsumen by • Associate II
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Lan8720 interrupt pin

Posted on March 03, 2014 at 16:35Hello everybody. I want to use lan8720 ethernet interface with the interrupt pin. But the interrupt pin is the same with the refclk out. So if I use anexternal 25Mhz clock, or the stm32f4 mco pin, need to connect the...

totti001 by • Associate II
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  • 2 replies
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How to use DSP library with STM32L1xx on IAR?

Posted on March 02, 2014 at 16:14Hello,I want to use DSP library functions on STM32L1xx.STM32L1xx is using ARM-cortex M3, same as STM32F1xx. How can I include the DSP library (ST library or CMSIS library) to a project?Thanks #stm32l1xx-and-dsp-li...

zoharr by • Associate II
  • 851 Views
  • 2 replies
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ADC is triggered by timer

Posted on March 03, 2014 at 11:28 Helllooooooooo,I want to use the configured timer as a trigger for the A/D converter. I have to set up an interrupt service routine (that will be called when new data is ready to be read) to read the data and fill a...

shiva by • Associate
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  • 1 replies
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Preload register

Posted on March 03, 2014 at 10:37Hello,I'm new in microcontroller world and have a question. What is preload register in TIM3? I really don't understand it's meaning. So could somebody help me, please. #preload-register

karolina by • Associate II
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  • 2 replies
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Linker Script , optimisation

Posted on February 28, 2014 at 15:05 Hello, I would like to be sure I understand the linker script that I am using. My main question is : the code is it copy to RAM before to be executed? I think It's not the case, because the code is ...

stm324xg_usb_audio_codec.h missing!!

Posted on December 19, 2013 at 09:59Hi all,I'm trying to compile the ''STM32F4 Demo Builder V1.3.0'' source, but it fails in in the ''usbd_audio_out_if.h'' file since the included file ''stm324xg_usb_audio_codec.h'' does not exist. I've searched the...

nicholas by • Associate II
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  • 4 replies
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PendSv not called or delayed call

Posted on February 28, 2014 at 17:23 Hello, I have a strange issue using Atollic / JLink / STM32F2 working on a preemptive multitasking kernel. I initialize my interrupts priorities like this: NVIC_SetPriorityGrouping(6); ...

root by • Associate II
  • 1352 Views
  • 4 replies
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usb hid stm32

Posted on February 28, 2014 at 16:50i use stm32f4 discovery board with  keil ide. but i can't know from where i can start with stm32 . '' i was use usb with pic microchip '' i just want transfer data between pc and stm32f4 using usb.

elec_st by • Associate III
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  • 3 replies
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