STM32 MCUs Products

Ask questions, find answers, and share insights on STM32 products and their technical features.

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

PUTCHAR_PROTOTYPE

Posted on May 02, 2012 at 03:04 #ifdef __GNUC__ /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf set to 'Yes') calls __io_putchar() */ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTY...

Large external RAM

Posted on April 30, 2012 at 00:58Hi guys.I have been playing with Stm32f4 discovery for couple months.My problem follows like this;I have to take 2 vga images from CMOS camera and store them.I will make some mathematical operations on both images.An...

F4Discovery using UART1

Posted on March 26, 2012 at 16:03Hi, I not having much success with using the UART (USART1) on my F4Discovery board (STM32F407). I am pretty new to STM32 and Keil (the IDE I am using). Here's my code: &sharpinclude ''stm32f4_discovery.h'' &sharpincl...

I2C address timeout: how to close communication correctly

Posted on April 21, 2012 at 11:27Hi there,I'm trying to implement an enumeration test on the I2C bus with my own driverbut I haven't figured out how to deal with a timeout on the address.After I send the address of the slave, if nobody respond withi...

salvatore by Associate II
  • 5063 Views
  • 6 replies
  • 1 kudos

RTC Autowake Up & Hard Faults

Posted on April 30, 2012 at 19:54I'm running into a strange issue where if I have the RTC auto-wakeup enabled, I intermittently get hard faults when I run the software through the debugger, break, then step through the code. Seems to happen more fre...

shotaro by Associate II
  • 734 Views
  • 2 replies
  • 0 kudos

STM32F4 Dma continuous data flow

Posted on April 30, 2012 at 16:17Hi, I wish to acquire data in continuous mode from Uart, without that the acquisition is completed every packet but after  all packets are sent. Thanks for every help. I attach my code. #dma-usart

lacava by Associate II
  • 865 Views
  • 1 replies
  • 0 kudos

1-Wire

Posted on April 24, 2012 at 20:28The1-wireprotocoluses onlyoneport to sendand receive data. What is theconfiguration modefor theGPIO_Mode?What is themethod toaport toreceive andsend data?

USART baud rate on STM32F4

Posted on January 26, 2012 at 05:07Got freertos running on Discovery board STM32F4 Following is function which initializes USART, but i see only garbage coming out hyper terminal, void xSerialPortInitMinimal(unsigned portLONG ulWantedBaud, unsigned ...

ST-Link+SWIM = error?

Posted on April 26, 2012 at 02:51Hi, I've made my own STM32-based development board. I was using the ST-Link built into the VL Discovery board to program it, and so I made my board with a 4 pin SWIM connector. It's been working fine with my toolchai...