USB composite device (HID+CDC) with USB-FS library
Posted on May 25, 2013 at 13:56 The original post was too long to process during our migration. Please click on the attachment to read the original post.
Forum Posts
TIM3 interrupt occasionally fires too early
Posted on May 20, 2013 at 19:28 I am using TIM3 as an event timer to trigger external ADC conversions. I am having an issue where the timer interrupt fires too early and causes an out of range conversion result from the ADC. I notice that when t...
STM32F407VET6 SPI1 doesn't work PB3,PB4,PB5 and PA15
Posted on May 25, 2013 at 00:54Hi.Please help. I write simple app using restricted KEIL to operate with AD5292 via SPI for my academic research project. To achive this I wrote the following code:int main(void){ /*!< At this stage the microcontroller...
TIM4 CCP1 Interrupt arrive too early (0.23ms instead of 500ms)
Posted on May 24, 2013 at 11:53Hello,I have configure Timer 4 in Compare mode with interrupt enable on STM32f103RB.I set the compare register to 500ms (72MHz System Clock).I have notice that TIM4 CCP1 Interrupt fire in 0.23ms (as measure with logic ...
What is the difference between using a 8MHz and a 25 MHz quartz ?
Posted on May 20, 2013 at 12:22Hello,I'm currently designing my own schematic based on the STM32F4DISCOVERY board with a STM32F407.The quartz implanted on this demo board is a 8MHz. But there is a possibility to put a 25Mhz quartz. What is the diffe...
MCBSTM32F400 UART - How to use example programs / learn
Posted on May 24, 2013 at 17:08Background: I have a lot of experience with Atmel processors (Arduino) and some experience with M68332 processors. Both have widely available examples and forums that help new user get started. With a running example...
Don't understand behaviour of RTC_AlarmCmd()
Posted on May 09, 2013 at 22:05 I'm using the RTC on an STM32L151CB and at some point I'd like to disable both alarms and update alarm A. I'm using the following code which doesn't work: RTC_AlarmCmd(RTC_Alarm_A | RTC_Alarm_B, DISABLE); R...
STM32 reset when wakeup by extern line from stop mode
Posted on May 23, 2013 at 18:16Hello, everybodynow I use stm32f103r8, I haved followed the reference manual and configured my mcu in to stop mode. And it has been in stopmode, but when i press button to wakeup the mcu, the mcu reset. I print value o...
newlib/libc/usleep linker problem
Posted on May 24, 2013 at 13:24I'm sure this is something trivial, but being relatively new to MCU development I'm stumped.I'm trying to compile the toggle_GPIO example for the STM32F4G-EVAL board, modified to include a usleep(1000); line to slow it...
SPI slave with DMA
Posted on May 06, 2013 at 16:42The original post was too long to process during our migration. Please click on the attachment to read the original post.
