STM32 MCUs Products

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USB D+/D- voltage versus STM32F103 VDD voltage

Posted on April 18, 2014 at 19:24Hi,You probably already get such discussion.I am currently designing a board based on STM32F103RC6 MCU that I want to supply with Vbat=3V6, VDD1/VDD2/VDD3/VDD4=VDDA= 2V4 but in the data sheet, the Vdd min in the USB ...

bertrand by Associate
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ITM_ReceiveChar (void) gives undefined.

Posted on January 11, 2012 at 21:46Using ITM_ReceiveChar (void) I get the error  ''undefined reference to `ITM_RxBuffer'''.  I am able to successfully use ITM_SendChar() as evidenced by getting the corresponding output on my SWV Console so my proble...

jdsotack by Associate II
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Crystal drive level

Posted on September 22, 2011 at 11:31I have read the ST app note about crystal oscillators and I am concerned about the drive level. Before reading this app note, I chose the TXC 7M series crystals for its small size and reasonable cost. In the data...

Can't set character match bits in USART_CR2

Posted on April 18, 2014 at 02:58I'm trying to generate a reset on a USART receive character match on the F3 Discovery board. If I understand the user manual, I need to set bits 31:24 of USART_CR2 to be the character I want to match. The problem is ...

Linking errors when redirecting stdout to uart on stm32f2

Posted on April 17, 2014 at 22:50Greetings,I'm working with an stm32f215rg mcu and I'm attempting to redirect stdout/in to uart4. I seem to be getting linking errors when attempting to link all the objects/libs together. The line I use is below:arm-...

LCD is too slow in STM32F439 with FMC

Posted on April 16, 2014 at 08:34Hi to all, I have a STM32F437ZI and I connected FMC to SSD1963 but LCD is refreshed slow rahter than FSMC. I previously run the same LCD with STM32F407 and I used the same code. I just all FSMC parts to FMC. Where di...

ali by Associate II
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Vrefint and Temperature Calib values on STM32F105/7

Posted on April 14, 2014 at 15:51Hello, I'm trying to figure out where the factory-calibrated values for internal reference (Vref and Tsense) are located in STM32F10x series. STM32L15x series have a Vrefint_cal and Tsense_cal1/2, but I can not find ...

laurent1 by Associate
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SDcard and LCD ?

Posted on April 14, 2014 at 01:23 Guys, I have a question about SDcard and LCD initialization , Everytime I intialize LCD after SDcard, SDcard stopped working, is it because of port clock ? Thanks SDcard initializatio...