Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on August 19, 2013 at 23:21A warning so no one else will get caught by this. On the original STM32F4 design docs pin 99 on LQFP100 is shown as RFU or PDR_ON, and diagrams show it can be connected to Vdd. The gotcha is this only applies to r...
Posted on September 14, 2012 at 17:49Hi,I have a new board based on STM32F407 that is wired iin RMII with a KSZ8031RNL PHY. I would like to port the stm32 f4 eval board sample to my board. I have defined the RMII_MODEHere the maping of the phy ...
Posted on August 29, 2013 at 04:24 I was trying to write out the usart using dma. I thought everything was working till I actually looked at the data. The data seemed to always be wrong so I extracted all the relevant code to test it separately ...
Posted on September 02, 2013 at 16:21Hi, Sorry this might be a stupid question as I have not done enough research. But if some one could answer will save me lot of time. Is there a way I can increase the program memory of STM32f407 using external f...
Posted on September 02, 2013 at 10:37Hi, I'm using Usart1 on STM32F100. I need to wait until the last byte is completed sended to make the DE signal go low on a Modbus Slave application. This seems to be a simple task for a each programmer, but I ha...
Posted on September 01, 2013 at 18:26Hello, I am trying to get the I2C bus to run with the MMA8452 accelerometer, but it just wont. I can generate a start condition but nothing else. I'm watching the bus lines with a scope/logic analyzer and I can s...
Posted on August 31, 2013 at 19:50hello i tried ST's adc exemple and i got weird values of my variable while debugging , for exemple i got 30 for 2.0 v and -1000 for 2.5 v , so anyone have a working code with no weird things? and thnx :)
Posted on August 31, 2013 at 21:45 hello dear forum, I am trying to setup window watchdog on F103 I want wwdg to be reset in a window of 8 - 12 milisecond I set wwdg prescaler to 2 so wwdg timer is counting every 0.227 microsecon...
Posted on August 28, 2013 at 16:10Hi,I'm trying to generate 3 signal using TIM3&TIM4.the first signal run at 8MHz, DutyCycle 50%, the second signal should run every odd cycles of the first signal and the third should run every even cycles of the fir...
Posted on August 30, 2013 at 14:27 Hi, I have a bit of an issue - I'm trying to put an STM32 into STOP mode, but to have it wake up when a character is sent over the USART (and to receive that character). My code is just: // .....
