STM32 MCUs Products

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Forum Posts

Failing to set up USART DMA TX

Posted on May 22, 2015 at 15:33 Hello, Can anyone help in pinpointing where and what I'm doing wrong when seting up USART DMA TX transmission. Working with STM32L152RB (STM32L discovery) and trying to setup USART1_TX overDMA1_Channel4,USA...

lauris by Associate III
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  • 2 replies
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STM32F4DISCOVERY CRC ISSUE

Posted on May 25, 2015 at 14:57 Hi, I'm working on the stm32f4discovery board, with the last version of keil µvision. I used library from stm32Cube. I have problem with CRC peripheral : I can't get a right result. My initial...

Counting The impulses sent via timers...

Posted on May 23, 2015 at 17:59Hi!I am working now on the project (STM32F429i board) where I need to profile the velocity of servo motor (i.e. trapezoidal velocity)... So I need to control the number of pulses I've sent via PWM channel, to control p...

magas09 by Associate II
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  • 5 replies
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system clock configuration issue in stm32f407vg

Posted on May 25, 2015 at 06:17HelloSuppose configuring system clock to 168MHz.According to page 226 of RM0090_Rev9, it is recommended to set PLLM in a way to achieve 2MHz for VCO input frequency(e.g. 8MHz HSE with PLLM=4) in order to limit jitter a...

Value line discovery firmware USB implementation

Posted on May 25, 2015 at 15:27 My STM32VL discovery board shows as having an up-to-date firmware of V1J13S0 according to the ST-LINK utility, but the USB implementation is still broken, causing a long delay and numerous kernel errors and warnin...

Updating the timer pwm frequency...

Posted on May 25, 2015 at 12:53Hi!I have one question: why when I update the timer PSC, ARR and CCR1 registers to change the frequency of PWM signal, the first pulse is generated with the earlier frequency and only second and next have desired frequ...

magas09 by Associate II
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  • 6 replies
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STM32F407 MEM2MEM dma TRIGGER

Posted on May 24, 2015 at 13:36Hi to all i want to trigger DMA on MEM2MEM State and use it by fsmc to run an External 12 bit DAC(AD5445) in 50ns Step. is there any way to do that without using interrupt? #dma #memory #fsmc #timer-trigger #mem2mem...

STM32F373 SDADC (Sigma-Delta ADC)

Posted on March 18, 2014 at 03:12Hello, I am planning on using the SDADC in STM32F37x microcontroller.  The data sheets says the sampling frequency is between 500 kHz ~ 6 MHz, depending on the clock signal driving the SDADC.  The output data rate is...

jim_wei by Associate II
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  • 4 replies
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