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Forum Posts

Restart from SRAM after Bootloader with problems

Posted on June 30, 2012 at 09:40Hi guys, i managed to flash my stm32f107vc via the internal bootloader, but i have problems to get the program running after it. When I reset the MCU the PC is somewhere at the beginning of SRAM i think (0x20000000)....

STM32F2 USART IDLE Detection

Posted on June 30, 2012 at 15:22Hello,I'am using two STM32F207IG with the UART1's configured as RS232 (8n1,115200, no flowcontrol, asynch) connected via null-modem.Each 10 �s the master sends a byte to the slave (status bit USART_SR_TC is set).My pr...

holger by Associate II
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Global Triggered timer.

Posted on June 27, 2012 at 11:42Hi All,i am using IAR KickStart Kit for STM32F107VC i have 3 of this board and i am trying to setup like one board will be master and two boards will be slave. the master board should send signal to the slave at exact...

hello by Associate II
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USART1 simple use problem

Posted on June 29, 2012 at 10:24Hello everybody, I begin with CortexM4 STM32F4 on a keil developpement board (MCBSTM32F400) I try to use USART1 in a very simple mode. I take a look to example and discuss forums. My config seems to be good but no sig...

Beginner with ADC3_DMA, ADC3ConvertedValue constant

Posted on June 28, 2012 at 01:21using gcc 4.5.2, st-util 4242, stm32f4discovery, ADC3_DMA peripheral examples from STM32F4-Discovery_FW_V1.1.0, ld file from TrueStudio, startup file from CMSIS. When I run the program in the debugger the ADC value do...

STM32F4 TIM1 PWM missing ch1..3

Posted on June 28, 2012 at 17:48 STM32F4 TIMER 1 PWM1. Please can someone tell me how to enable channels 1, 2 and 3. Channel 4 is fine generating a PWM at 0..100% at 20Hz. I know channels 1..3 hardware is different - just can't figure out what t...

John F. by Senior
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PWM on PB.10 and PB.11 with DMA and TIMER2(CH3 e CH4)

Posted on June 28, 2012 at 19:38How can I configure PWM on TIMER2 (CH3 and CH4)? I would like to configure CH4 in other Channel of the DMA, but looks that only run on Channel 2. /* Configuracoes DMA */  DMA_DeInit(DMA1_Channel2);  DMA_InitStructure....

HSI and GPS interference

Posted on June 28, 2012 at 01:33 Hello everyone, Did anyone notice that STM32 with an internal HSI at 8MHz cannot be used in proximity to an embedded GPS antenna? The 8MHz internal oscillator happens to have the 197th harmonic close to L1...