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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...

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Using all channels of Timer 3

Posted on June 23, 2014 at 16:22 I'd like to use all channels of Timer 3 to generate different clocks and timers. Channel 1- 10ms timer interrupt Channel 2- 250us timer interrupt Channel 3- 50kHz clock (50%) on PB0 Channel 4- 256...

daniel2 by Associate II
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Problem with custom usb bootloader

Posted on June 23, 2014 at 01:20Hi all,I´m trying to develop my owm custom usb bootloader and firmware. As most of the people who tried before I am having problems because I´m ussing again the usb peripheral in the firmware. So I tried disconnecting...

anrusal by Associate II
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I2C Reading state machine

Posted on April 11, 2013 at 23:50Hi,I am working on STM10C eval board. I am trying to read X and Y datas from the touchscreen using a state machine inside the I2C_IRQ_Handler. The start byte is generated inside the EXTI interrupt once a touch is det...

GSM Modem Interference

Posted on June 23, 2014 at 10:13A GSM modem is in proximity to the uC. When the current bursts of the modem occur I get false logical 1 on my port pins. They are configured as analog inputs. I am using the STM32L100-DISCO board. I was wondering if t...

Accurate RTC using HSI

Posted on June 23, 2014 at 21:14I'm using the SMT32F030 with 48MHz internal clock. I've configured the RTC and noticed it is about 8% fast. Is there a way to make this more accurate through calibration of some sort? Will that have to be done from pa...

daniel2 by Associate II
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STM32Cube stack alignment problem?

Posted on June 23, 2014 at 14:34 STM32Cube ld scripts set _estack to the last location of RAM like this: /* Highest address of the user mode stack */ _estack = 0x20017FFF; /* end of RAM */ I had several problems with code that u...

whg03 by Associate II
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stm32f429-disco and beginners question

Posted on June 20, 2014 at 15:26 Hi, as a beginner I am starting freshly with stm32 programming on a stm32f429-disco board using eclipse with the gnu-arm-plugin and the gnu-arm-eabi toolchain in linux (toolchain is working - the simple LED-b...

STM32F4Cube HAL_SPI_TransmitReceive_IT()

Posted on June 19, 2014 at 21:42Hello, I am interfacing an STM32F407 (on DISCOVERY eval) to several devices using SPI bus.  One of the devices clocks 4 bytes of data out simultaneously as 4 bytes of config data is clocked in (LTC2446 ADC).  I am att...