STM32 MCUs Products

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STM32F303x - Hardware Resets

Posted on February 09, 2015 at 15:51What is the usual procedure for power-on reset for other chips besides the MCU? Is there a reset_out signal or method coming from the MCU that is recommended? Or is there a method for resetting all chips in a syst...

gbigden by Associate III
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  • 6 replies
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Semihosting in Eclipse or retargeting printf

Posted on June 03, 2014 at 09:43Hi,I am trying to debug some very simple code for STM32F0Discovery using Eclipse, ARM arm-none-eabi-gdb compiler and OpenOCD debuger.I could build and debug my cods and now I am trying to use printf to see some variab...

Rise time of SPI Signal

Posted on February 10, 2015 at 10:50Hi I am using STM32F103RBT6 @72MHZ I use SPI with DMA to stream data from memory to GPIO SPI Prescaler is 4 GPIO is configured as output push-pull and speed 50MHz The problem is that the data output rise and fal...

hossam by Associate II
  • 870 Views
  • 1 replies
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STM32f2xx SWD programmer problem

Posted on February 09, 2015 at 16:34 Hi at all,I would try to program a custom made board with STM32f205RCT7 micro onboard via SWD .I got an SWD connector with vdd,gnd,swdio,swclk,nrst.No pull up or pull down on swdio pin , 10k ohm pull up on nrst a...

andreima by Associate
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  • 3 replies
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How to preset toggling timer outputs

Posted on February 09, 2015 at 15:06Hello to all, I use a TIM8 of a STM32F2xx to generate a quadrature signal. This works fine no problem with toggling mode. I send a sequence of pulses out of the OC-Outputs. (a speed ramp). When the sequence is ove...

andywild2 by Associate III
  • 512 Views
  • 3 replies
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TIM1 CCR3 Register Problem? STM32F429

Posted on February 06, 2015 at 17:29Can someone explain why the following code causes CCR1, CCR2 and CCR3 to have the same value: TIM1->CCR1=value1; TIM1->CCR2=value2; TIM1->CCR3=value3; While the following code doesn't cause this problem (CCR1 and ...

lk1991 by Associate II
  • 1518 Views
  • 9 replies
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STM32 F2 series VCP issue

Posted on February 09, 2015 at 04:49Dear all sir: I'm working on STM32_USB-HOST-Device-LibV2.1.0 USB_Device_Examples VCP. This demo code try to send  & receive serial data from PC through USB cable and transfer to serial port. Now the I down load th...

lstfazz by Associate II
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  • 2 replies
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CAN bus on STM32F103: how to begin

Posted on November 25, 2014 at 23:48Hi everybody, these days I'm starting a project based on STM32F103RE uC for which I have to use the CAN bus pheripheral to transmit and receive messages.I have no previous experience with CAN pheripheral on STM32 ...

emilio by Associate II
  • 5447 Views
  • 6 replies
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STM32F4-Discovery SPI LIS3DSH

Posted on February 09, 2015 at 04:16 Hi all, I was able to use the code below to init the SPI and read the values fromaccelerometer SPI_InitTypeDef SPI_InitTypeDefStruct; GPIO_InitTypeDef GPIO_InitTypeDefStruct; RCC_APB2PeriphClockCmd(...

STM32_F0 Changing Timer Period

Posted on February 09, 2015 at 20:32Hi All,I have a timer running on my STM32F0 and I would like to change the period of the timer mid-application. Do I need to rerun my timer configuration with the new timer period or can I simply update the single...

daniel2 by Associate II
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  • 1 replies
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