STM32 MCUs Products

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Forum Posts

How can I find the PHY address of LAN8720

Posted on November 08, 2016 at 07:33Hi!I have STM32F4discovery and PHY device LAAN8720. I want to configure the register with address = 0b00000 of the LAN8720. When I set PHY address = 0b00000 and after write operation of data 0x2100 I did read oper...

STM32F415 I2C BTF and TXE

Posted on November 10, 2016 at 05:14I'm attempting to write an interrupt based driver for I2C using just the CMIS header and my wits. My understanding is that there is a data register and a shift register. For transmission SR1.TXE means the data reg...

kenny by Associate II
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Conflicting compiler for startup_stm32f070xb.s file

Posted on November 09, 2016 at 06:00Dear All,I am trying to build my program using GNU Tools ARM Embedded(5.4 2016q3) in Coocox v.2 beta   IDE environment.The compiler gives the error such as,\common\Drivers\CMSIS\Device\ST\STM32F0xx\Source\Template...

What is minimun value of Vref in ADC Nucleo f767?

Posted on November 09, 2016 at 21:30How much I can put on Vref without lossing bit? I can read 8 bit without nise (12 bit is noisy) when the Vref is 3.3V. however, my sensor show maximum 12 (decimal). I wan to get more resolution. Therefore I want t...

mohsen by Associate II
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some questions about stm32f303cb usb module

Posted on November 09, 2016 at 18:50HelloI have some questions about stm32f303cb usb module:1- If the EP0 receive buffer is set to 1 bytes, how will received data be handled during setup packet reception (bmRequestType, bRequest,... totaling 8 bytes...

STM32F4 using timer channels to generate shifted pulses

Posted on November 08, 2016 at 19:59Hi, I want to generate short pulses on channels 1, 2 and 3 of TIM4. Pulses on each channel must be shifted relative to other channels, just like on image below:Main idea is:At first I set TIM4 mode to TIM_OCMode_A...

0690X000006030JQAQ.jpg

STM3232746g_discovery demo gesture problem

Posted on August 31, 2015 at 17:27I'm trying to add to the ST Demo, the gesture recognition functionality provided by the touch screen. In the timer callback k_TouchUpdate, I added the following code, but the returned value is always zero. How can ...