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Problem with example USB code and RTC

Posted on August 07, 2013 at 20:47usb_bsp.c, V1.0.0, 19-September-2011 in USB_OTG_BSP_Init() makes this call:    RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, ENABLE); That goofs up prior configuration I had done to the RTC. Is that a bug in the librar...

STM32L timebetween pulses

Posted on September 06, 2013 at 15:35 Hello,I'm trying to measure time between two pulses on a pin. Time between pulses is in 10 - 100 uS range so I can't use millis function. What I'm trying to do is use TIM2 CNT register. Since my APB2 clock is ru...

k_ by • Associate II
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Configure channel3 Timer2

Posted on September 10, 2013 at 16:45 Hi, For the moment I am using the channel2 of the Timer 2 in capture mode. At each rising edge of the signal, the timer is captured and reseted; It works fine; My code is this following: G...

I2S Interrupt and Optimisation

Posted on September 10, 2013 at 17:02Hello All. In my app. I have I2S Transmitter with External Clock. I want to test the clock frequency. At clocktest.c I make: [code] volatile u32 clknum; extern volatile u32 SendTmr; void ClockTest(void){      Del...

TFT LCD with FSMC and External RAM

Posted on June 14, 2012 at 10:00Hi all,I'm working on a project with a dumb TFT LCD (320 x 240). I'm trying to display static images (no double buffer). I've been able to display images (in 565 format) that I load on the flash memory and refresh it ...

joembiye by • Associate II
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How to Store Font Table in Flash with GCC?

Posted on July 16, 2012 at 18:26I have a large 5x7 pixel font table that I want to store in flash memory instead of RAM memory. I am using Eclipse with the ARM GCC plugin.I am hoping there is something similar to avr/pgmspace.h but obviously for STM...

USB callback function for STM32-USB-FS-Device library

Posted on September 09, 2013 at 23:32Hi all,I'd like to define a callback function which can be invoked when USB receives something from the host.  Where should I implement this in the STM32-USB-FS-Deivce library?I know that in Atmel ASL I can do so...

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