Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on March 22, 2013 at 00:42I am holding an STM32F205 in reset (NRST pin low). I am measuring the current into VDD1-4 plus AVDD at 1.7mA. I am using 3.3V. 0.1mA I can explain through the pull-up resistor on the NRST pin per datasheet. 0.3mA I [...
Posted on March 20, 2013 at 15:29Hello, I´m using STM32F303 and I´m trying to communicate via SPI (simplex SPI1-SPI2 using interrupts). It couldn´t be easier but it doesn´t work and I can´t find mistake. I connect PB3 (SPI1_SCK) with PB13(SPI2_...
Posted on March 21, 2013 at 23:29hi all,please i need help. I have to generate 2 signals PWM like this:I think that we should insert a dead time. How to do it plz?
Posted on March 21, 2013 at 10:46Hi, 64 byte transfers from my STM32F4 cdc driver to the host side fails. 63 bytes work, as well as 65 bytes. A quick forum search indicates that this is a bug in the cdc class driver firmware. A 64 byte transfer shou...
Posted on March 21, 2013 at 04:08I'm having difficulty getting deterministic behavior when disabling a DMA transfer in progress. I'm using DMA to feed the USART 2 transmitter from a buffer. When I need to queue up more data for the transmitter, I'...
Posted on January 24, 2013 at 17:54Hi allI am using STM32 and trying to make the periodic wake up of the CPU from low power sleep mode , by interrupt from TIMER 9 , and I see the following strange behavior: I succeeded to wake up the CPU fro...
Posted on December 03, 2011 at 11:21Hello, I need help. I want to use both the regualar channel and injected channel in my project. The injected channels are configured in injected simulataneous Dual mode, single conversion, scan mode. The ADC1 is...
Posted on April 04, 2009 at 17:08stdio via USB virtual COM port
Posted on March 17, 2013 at 12:51Hi all, I am a beginner to USB and after some days of reading USB OTG library and RM0033 in the scope of getting started with USB. I'll to try to explain the virual com port example in my own words and fore w/o garan...
Posted on March 19, 2013 at 13:12 Hi, I am trying to comunicate with MCP23016 by i2c and i am using STM32F103RB with uVision 4. The problem is that if I send 0x40 is the same if I send 0x41. Its the red mark on the code. My code is: ...
