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stm32f4 discovery clock appears to be 1/2 speed

Posted on December 29, 2013 at 18:57Hi, I'm fairly new to embedded system programming and I've just started experimenting with the 32f4 and 32f3 discovery boards. I'm working with a simple interrupt driven timer to flash one of the LEDs at 1Hz, but...

darin722 by Associate
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how to hold stm32f4discovery in place?

Posted on December 30, 2013 at 19:42Is  it safe to drill the f4discovery board? For example around the SWD connector or the ST logo? I need to connect the discovery with a 10x10 expansion board I am designing. I am probably planning to have my board...

arro239 by Senior
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USB HID Example

Posted on December 30, 2013 at 16:22I am currently thinkering with the USB HID example supplied with the STM32_USB-Host-Device_Lib_V2.1.0. I would like to communicate with MATLAB using the psychotoolbox to read the data output through the USB port; ...

DAC output not working properly

Posted on December 23, 2013 at 17:09 Hi everybody, I'm using the DAC1 output on my STM32F Up to a 12 bits values of around 1000, it works correctly, but after, the output voltage still be at 1.8V (whatever my value to be converted : 3000,...

STM32F100 Multi-Channel ADC assitance?

Posted on December 24, 2013 at 08:25Hello all,Long time lurker, first time poster. I've spent the past couple days working on a board designed aroumd a STM32F100RB processor, attempting to use ADC1 to scan a group of channels via DMA. I've followed ...

UART Misses Characters

Posted on December 30, 2013 at 11:32Hello! I have a STM32L151CB and I need to use the UART interface. At first it worked perfectly, but after I changed the system clock from HSI (16 MHz) to MSI (2 MHz) I only receive some characters. E.g. when I sen...

meerd1 by Associate II
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Reading from GPIO PC0 ?

Posted on December 30, 2013 at 14:15Guys, How can I read a button from GPIO PC0 ? I have created :       RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOA, ENABLE); //initialize PC0 and...

STM32F4xx DISCOVERY multiple ADC with DMA

Posted on December 29, 2013 at 17:13HiI want to use ADC-DMA to read 4 input of voltage. PA0, PA1, PA2 and PA4 on ADC3 IN0, IN1, IN2 and IN4.I try to modify the code samples founded in STM32F4xx-Discovery_FW_V1.0.0 for STM32F4-DISCOVERY or for STM32F...

Problem in Writing data to EEPROM

Posted on December 18, 2013 at 14:52Hi     I'm trying to write data to eeprom using I2C protocol (Polling Method), but while checking event 5 (EV5) as well as event 6 (EV6) I'm getting '' Bus error & Arbitration loss '' error. How can i overcome thi...

ss2 by Associate II
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