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measure time duration

Posted on July 13, 2011 at 09:19I have a string of pulses coming in, and i want to measure the period of a pulse. So i have initialize the input capture for the timer, in my case TIM2 CH4.  RCCIC_Configuration();       /* NVIC configuration */     N...

kong0073 by • Associate II
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STM32F103C8 SPI Not Working

Posted on July 13, 2011 at 20:13Hello -- I'm having no success in getting a clock signal out of the SPI1_SCK pin on our chip.    TIM1 is working as configured.   I've studied the manual,  download materials from the STM web site,  but no further suc...

[HW] pull-up on SWDIO

Posted on July 13, 2011 at 14:26Do I need an external pull-up resistor on the SWDIO line for Serial Wire Debug?The STM32 reference manual (Doc ID 13902 Rev 13) is not quite on this matter… Section 31.4.3: Internal pull-up and pull-down on JTAG pin...

[STM32F205RG] MCU seems to lock itself.

Posted on July 13, 2011 at 13:47Here is the full story ...I re-designed an existing product which was based on a PIC24HJ128GP202 (16 bit, 40 MIPS from Microchip).The new version uses an STM32F205RG (TQFP64).Physically, all JTAG + RST signals are ava...

root by • Associate II
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LED Array question

Posted on July 10, 2011 at 21:21I apologize if I am oversimplifying this question, but I'm on the newer side to MCU's.   Anyways, I was trying to figure out putting together a LED array using GPIOC 8-12 and GPIOA 8-12 to make a 4x6 array. I had figu...

how to program a potentiometer

Posted on July 12, 2011 at 09:24hello, I have the STM3210C eval board and there is a potentiometer linked at PC4. I want to divide all the range into ten parts. What should I do ? I have try to do Read Input Data, and all the function ''read...'' pr...

cyril2399 by • Associate II
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STM32F103 in VFQFPN36 with 32.768 kHz RTC crystal?

Posted on July 07, 2011 at 20:04Is it possible for the 36-pin STM32F microcontroller (STM32F103TxU, VFQFPN36 package) to use an external LSE crystal?  Based on the data sheet, it appears to be missing the PC14 (OSC32_IN) and PC15 (OSC32_OUT) pins. T...

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