Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on March 05, 2014 at 12:59I'm looking at making a device with the STM32F401, and I'm wondering if USB on it can function without a HSE crystal?The clock diagrams seem to imply that PLL48 can work off of HSI, but the reference implies that USB...
Posted on March 06, 2014 at 12:41Hi there, I want to change the speed of GPIO for STM32f4 discovery board. The maximun speed I can get on specified pin is 6 MHz and I want to get 20 Mhz. we know that the discovery board has external clock circuit to...
Posted on March 06, 2014 at 19:00Hi all, I'm trying to interface a multi-channel ADC to the F4 series over SPI or perhaps I2S. Need to achieve DMA. I have 256 bits. Can I use a NSS signal that is low for 256 serial clocks? Or do I need to burst bot...
Posted on December 29, 2013 at 02:54Hello,Can anyone tell me whether the STM32F429I-Disco board is compatible with the STM32F4DIS-BB's Ethernet? In short, I want Ethernet on the '429 Discovery board.Thank you,-david #discovery-stm32f429
Posted on March 07, 2014 at 03:15 Hi , I have a timer programmed to monitor a timeout event using timer interrupt(every 100ms). If the event occurs within the time (100ms) i would like to refresh the timeout. Is the below code a...
Posted on March 06, 2014 at 00:08Dear all, i am trying to program a stm32f405 just soldered on a prototype pcb. Seems jtag TAP is accesible, but for some reason i cannot halt the cpu: Open On-Chip Debugger 0.7.0 (2013-08-04-10:13) Licensed under GNU...
Posted on March 05, 2014 at 23:37Hi all, I'm hoping this is an easy one and just something I am missing. A google didn't return anything obviously relating to my problem. I have some messy code that sets up my USART peripheral correctly. I have used...
Posted on March 06, 2014 at 09:37Hi I still could not understand the operation of the analog watchdog. For example I want to protect a short ciruit in the H-bridge ; so I put the shunt resistor and set the limit of the maximum current ; for exampl...
Posted on March 06, 2014 at 09:55Hi everyone. today I'm newbie in LCD. I discover the LCD LCM DT192x64 but I don't have any ebook or reference manual about that, I already searched on google but I get another. If you have any book relative with my ...
Posted on March 04, 2014 at 23:10 I'm trying to do a pin interrupt (EXTI). My code: // IRQ handler for EXTI0 void EXTI0_IRQHandler ( void ) { EXTI->PR = 1UL << 0; buttonPress = 1; } int main ( void ) { // some system stuff here ... ...
