STM32 MCUs Products

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Forum Posts

How to reset virtual COM port driver?

Posted on February 06, 2013 at 18:37Hi, i am using the VCP for communication between a PC software an my STM32F207 device. Works ok so far. But if the device restarts while the PC software maintains the connection (or if somebody pulls out the cable...

zabel by Associate III
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Fast gpio read with sync

Posted on February 05, 2013 at 09:46Hello, I have 16b parallel bus, 8MHz adc, and I need to read as fast as I can data to memory array which is 128 point long. So far I overclocked stm32f4 to 250MHz so I could do it faster. Original code is :while(i...

linas2 by Associate II
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6 CH PWM on TIM1 (What is Wrong with my Code)

Posted on February 06, 2013 at 11:09 Hello, I am currently migrating from Microchip MIP to ST ARM Cortex M3 so I am new to Cortex M3.I have been trying for days to configure Advance TIM1 in STM32F103RB to output 6 Channel PWM but it has prove to be ...

STM32L Stop Mode

Posted on February 05, 2013 at 20:46I cannot get stop mode current below 1.1 mA in the IAR STM32L152VB eval board. This is the code to prep and then go to stop mode:lowPowerConfigGPIO();  (this configures all GPIO pins as ADC inputs)PWR_FastWakeUpCm...

Understanding RCC register

Posted on February 05, 2013 at 15:05I'm trying to understand how below function call  from usb_bsp.c source file works:RCC_APB1PeriphResetCmd( RCC_APB1Periph_PWR, ENABLE );This is from Reference Manual:5.3.8 RCC APB1 peripheral reset register (RCC_A...

dimax by Senior
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STM32F4 USART COMMUNICATION

Posted on February 06, 2013 at 10:06 Hi Guyz, it doesnot want to output, I have checked RCC and all initialization.. what am I still Missing? /** *****************************************************************************...

xtian by Associate II
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STM32F3 Opamp needed guidance

Posted on January 30, 2013 at 11:16In an application using the STM32F3xx, I am using the OPAMP in PGA mode to amplify an external 1 kHz signal to the ADC converter. The signal is provided AC coupled to the OPAMP non-inverting input. If I program the...

melchor by Associate II
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HIGH SPEED GPIO PROBLEM

Posted on February 01, 2013 at 16:04 Hi Guys, I have a question, I have this code and the TTL logic interface that I am reading has a speed of about 1Us The problem is.. I am not able to read all of the 1Us Data.. do you have suggestions...

xtian by Associate II
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Sending SMS

Posted on February 05, 2013 at 16:47I'm use stm32f103ret6 . I want send sms code by gsm module sim900and DMA_Usart Necessary ? Thank You.

I2c on STM32f0Discovery

Posted on February 04, 2013 at 11:18Good morning, i need to develop an application that read and write informations (like a mac address)between an stm32f0discovery board and a 24c02 EEprom, i need to use the PB8 and PB9 pins ad SCA and SCL.If someon...

pietro2 by Associate II
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