Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on September 06, 2014 at 08:50 Dear forum members, I hope you can help solving a mystery. I stumbled upon these cute stm32f030f4 µCs and built minimalistic boards with it. No external oscillator used, thus pins PF0 and PF1 should b...
Posted on September 06, 2014 at 04:45Hello, I'm trying to handle the Chip Select pin via software, but I can't figure out how to determine when the SPI peripheral has finished the current transfer. By the looks of it, the SPI_SR_BSY flag, becomes 0 ...
Posted on September 06, 2014 at 02:07Hello all,I am trying to confirm the pinout for Vref+ and VDDA on the STM32F411 products. The datasheet states if Vref+ is not available it is internally tied to VDDA. Only the UFBGA100L and LQFP100 packages expo...
Posted on September 04, 2014 at 12:29 Hi! I'm trying to communicate with Atmel AT45DB081D dataflash over SPI. For testing I've send command to read Manufacturer and Device ID (0x9F on MOSI). After I've sent data, SPI clock stops to pulse...
Posted on September 03, 2014 at 23:55 Hi, I'm trying to modify the standard One Pulse example to use TIM15 to generate a delay, programmable width pulse, triggered by an external input. For the external input, I am using TIM3 routed to th...
Posted on September 04, 2014 at 23:04I'm writing an app, that most of its time will spend in STOP or STANDBY mode (battery powered microsystem). I'd like the internal RTC to wakeup my STM32 every 5 minutes, enter the ISR, do its tasks in ISR (ADC me...
Posted on September 03, 2014 at 07:15Hello, i was thinking about, if it would be possible to write to one peripherie register (for example the CCR1 of a Timer) with two different DMA-Channels. For sure not at the same time, but at different points ...
Posted on September 04, 2014 at 11:34hi every body.i have a 6 or 7 sensors which all of them are connected my stm32f407 through ADC,Usart and i2c(kind of sensor fusion)i want to show the data of these sensors in pc through usart.i did this , but i j...
Posted on August 01, 2014 at 02:45Can someone confirm if applying ~5.0V to a 5V tolerant pin on an STM32L151 while unpowered (VDD=0.0V) will damage it?The latest datasheets specify the Absolute Maximum Ratings are VDD+4.0V for FT pins, but bench tes...
Posted on June 12, 2014 at 08:33Hi Did anybody try low-power modes on STM32f030 MCU? Specifically Stop mode. I can't get current under 200 uA. Did anybody succeed and get under this? If yes, please share how? I have disabled almost all of controller...
