Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on January 06, 2015 at 10:30Hello, I want to ask you a question. How many crystal cycles make up a machine cycle are in STM32 and STM8? For example, in 8051, 12 crystal cycles make up 1 machine cycle. Thank you!
Posted on December 09, 2014 at 14:19Dear All,My board is 429I-DISCO. I tried to code a continuous A/D conversion via DMA on FreeRTOS. At first A/D conversion shortly after power-up was starting nomally by ADC_SoftwareStartConv(ADC3). On the rest of ...
Posted on January 08, 2015 at 07:09A Question and Answer Book ''ARM Accredited MCU Enginner''http://www.amazon.com/dp/B00R9BYWWA #arm-cortex-accredited-mcu-aame
Posted on January 06, 2015 at 07:46Hello,I am currently developing an application based on the STM32F401VC-Discovery Board to decode the MP3 data anhd play it out as WAV. I have tried different methods as suggested by everyone but comes out with no ...
Posted on December 23, 2014 at 12:59Hi, I'm debuging a network application running across multiple Nucleo boards with multiple instances of the Keil IDE. Every time a target leaves the debugger the ST-Link connection is lost and reconnection becomes...
Posted on October 24, 2014 at 21:19I have been utilizing Eclipse IDE using GNU tool chain to develop and debug my STM32F429 based project.The target platform has an external SDRAM memory which configured and managed by the MCU's FMC unit. Even thoug...
Posted on January 07, 2015 at 12:51 I am trying to use the I2C peripheral on the STM32 I am finding that about half the time the address isn't being sent. What happens is that the data line is going low (start condition is set) the clock line go...
Posted on January 06, 2015 at 09:26I am using STM32L152 part to talk to a digital accelerometer using SPI. The SPI signal timing diagram for the accelerometer is illustrated in the attached figure. Looking at the diagram, it is clear that the spi cl...
Posted on January 06, 2015 at 14:03I use STM429 and 128Mb SDRAM and want to decare a big array in keil. How to declare it? How to let keil linker know the array is in external RAM? I defines uint8_t temp[1024*1024], but linker error L6406E: no space...
Posted on January 06, 2015 at 15:18These are the 0.05'' (1.27mm) pitch connectors CN6, CN7, CN11 and CN12. The jumpers I normally use on 0.10'' pitch headers are too big to fit. I've done some web searching and not found any jumpers that size. What ...
