Posted on December 16, 2014 at 21:02I am facing problem in capturing and saving audio .wav file to SD card using DMA and SDIO interface. I am using STM32F4 discovery. The loopback works fine. I am using I2S sampling rate of 32k. Problem arrives when...

Posted on November 20, 2014 at 12:47I am trying to get lowest power mode(in stop mode) of STM32L151RB. According to datasheet, power consumption in lowest achievable mode is below 14uA. But I am getting 40uA minimum on my device. I have tried differ...

Posted on August 22, 2014 at 08:53I want to turn on/off keyboard led using STM32F4 Discovery HID example.. Keys are working fine.I have problem with output Set_report. Led is not turning on/off although it seems i am sending correct request.I am sen...

Posted on July 21, 2014 at 09:28I want to interface keyboard using STM32F4 HID keyboard example. I am able to read keys pressed. I want to turn keyboard leds(NUM,CAPS leds) on and off.I have tried usb control packets as mentioned on web by other guy...

Posted on July 10, 2013 at 14:28I want to write a buffer into Winbond SPI flash using SPI DMA. When I write buffer, DMA write a null byte at first location and then start writing my buffer from second location and hence writes one character less tha...