STM32 MCUs Products

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device markin and order number coding (revision identifier)

Posted on October 21, 2015 at 22:02Hello could ypu please explain me how can I check from Order number of STM32F427VI which revision (HW revision) in this chip? In datasheet I can check, that for STM32F4xxx exist several HW revisoon of silicon chip:...

pavel by Associate II
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SAI block settings

Posted on May 22, 2015 at 11:33Hi,help me please to set up the SAI correctly.I need a mode I2S standart, 32-bit frame, 24-bit data. I configured my code:   hsai_BlockA1.Instance = SAI1_Block_A;   hsai_BlockA1.Init.Protocol = SAI_FREE_PROTOCOL;   hsa...

z1060 by Associate II
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How to setup interrupts correctly

Posted on October 10, 2015 at 17:31 Hello, I've the following configuration on my STM32F4: - ADC with DMA triggered from TIM3 - EXTI0 triggered fromGPIO PA00 - EXTI1 triggered from GPIO PA01 The interrupt EXTI0 and EXTI1 s...

Stop PWM output after N steps

Posted on August 27, 2012 at 20:01Is there a way to tell a TIMer on STM32 chips to do some number of steps and automatically stop after finished (and give an interrupt)?  I can do it now with a counter in the ISR but a few pulses slip out before I c...

Precise frequency measurement with STM32F3

Posted on October 20, 2015 at 15:51Hi, all. Could you please recommend the best way to do that using STM32 Timers? Input signal is a 5-10 kHz 3V sine-wave, and high-stable TCXO 12 MHz is used for MCU clocking. Measurement should be done with 1E-3 H...

krdmitry by Associate II
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STM32F373 - Strange sigma-delta AD behaviour

Posted on October 21, 2015 at 21:21My colleague uses STM32F373 and he found a strange behaviour with SD AD. Actually, this behaviour is described in ref. manual, but I am just curious why it is like that...He starts SD AD conversion with software co...

matic by Associate III
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STM32L0x1 Accurate LSE Clocks

Posted on October 21, 2015 at 17:40Hello! We are trying to generate a clock signal around 1.024MHz.  We currently have a 32768 watch crystal connected up and are hoping to get at least the 0.5% accuracy as alluded to in the reference guide:Multispee...

marcie by Associate
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STM32l052 exti problem

Posted on August 22, 2015 at 20:27Hi. I have three buttons connected to PB12, PB13, PB14. I use the following code:   GPIO_InitStruct.Pin = GPIO_PIN_12 | GPIO_PIN_13| GPIO_PIN_14;   GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;   GPIO_InitStruct.Pull ...

baev_al by Associate III
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