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Forum Posts

Systick Interrupt using GNU Assembler

Posted on September 13, 2015 at 16:48Hi guys,I have a problem to test systick using GNU assembler on my STM32VLDiscoveryMy assembly code is:.thumb.syntax unified.cpu cortex-m3 @ STM32VLDiscovery Board .equ STACKINIT ,   0x20005000 .equ GPIOC_BASE ...

agung by Associate II
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  • 7 replies
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Change PWM pulse

Posted on September 14, 2015 at 20:00 Hi, I'm using a servo with a pwm connection and this is a part of code: RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); GPIO_PinAFConfig(GPIOB, GPIO_PinSource4, GPIO_AF_1); GPIO_InitTypeDef GPI...

fenice-6 by Associate II
  • 493 Views
  • 1 replies
  • 0 kudos

PWM change not initially happening

Posted on September 14, 2015 at 16:40Hello Everybody.I am observing some strange behavior on the scope for a PWM output. I am driving it at 800kHz with alternating high time of 400ns and 800ns.In the TIM1_UP_TIM10_IRQHandler I am alternating the hig...

mlickess by Associate II
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  • 4 replies
  • 0 kudos

STM32 not restart after external Reset

Posted on September 07, 2015 at 11:10 Dear all I use a master uP (STM32F072R8) and a slave uP (STM32F030K6) The slave processor is in AC main voltage and the main processor is galavanic isolated from main voltage. The main processor can rese...

franz2 by Associate III
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  • 1 replies
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Uart in 7bit mode

Posted on September 12, 2015 at 15:51I'm using STM32F051R8 board but i'm unable to configure UART in 7bit bata and one bit parity mode. Tried changing M and PCE bits of UART CR1 register but no luck.

Checksum Error after download Firmware PackageSTM32F4 1.8.0

Posted on September 01, 2015 at 12:39after download the Firmaware Package STM32F4 1.8.0 with STM32CubeMX Version 4.10.0, an error occurs: stm32cube_fw_f4_v180.zip (MD5 file checksum is not good). It tried it several times on different PC's with the ...

owl_bo by Associate
  • 1049 Views
  • 4 replies
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Stm32f103c8 - clock configuration issue

Posted on September 14, 2015 at 13:36 Hello all, i started working with a small stm32f103c8t6 (medium size device) which i want to use it without any external crystal, so i configured it with usage of internal HSI oscilator. From wha...

Bogdan by Senior
  • 684 Views
  • 2 replies
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Starting with STM32F0DISCO...''errors''

Posted on September 14, 2015 at 12:25Hi, i'm just start working with the Discovery Board STM32F072B. I've installed CubeMX, the MDK-ARM 5.16a & ST-Link Utility 3.7.0 At first i want to go through the examples of the Disco-Board. I can start and rebu...

fbrand by Associate
  • 511 Views
  • 2 replies
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TIM1 update interrupt not firing.

Posted on September 11, 2015 at 13:11Hello Everybody.I am having trouble with the output compare function of an STM32F401RE. I am testing the OC function to generate a waveform by toggling an output at the compare point and the overflow point.The co...

mlickess by Associate II
  • 991 Views
  • 1 replies
  • 1 kudos

DMA fifo algorithm for non regular data

Posted on September 13, 2015 at 23:14Hello I am trying to figure out DMA and write buffer for incoming TCP data to send over USART I was thinking about using circular DMA (for USART TX) and  add data to buffer. When new data arrives stop DMA and add...