Posted on May 25, 2015 at 20:52hello i am using an IAP program to load another program on stm32f4 device. the main program is an uCOS-II RTOS. I have one problem: at first there is no problem to go in to IAP program and then jump to main program. bu...
Posted on May 25, 2015 at 13:13HelloWhat is range of the PLLN and PLLI2SN multiplication factors?According to pages 226 and 265 of RM0090_Rev9, their range is 192=< PLLN , PLLI2SN <= 432 , so factors below 192 aren't allowed?Thanks.
Posted on May 25, 2015 at 14:57 Hi, I'm working on the stm32f4discovery board, with the last version of keil µvision. I used library from stm32Cube. I have problem with CRC peripheral : I can't get a right result. My initial...
Posted on May 23, 2015 at 17:59Hi!I am working now on the project (STM32F429i board) where I need to profile the velocity of servo motor (i.e. trapezoidal velocity)... So I need to control the number of pulses I've sent via PWM channel, to control p...
Posted on May 25, 2015 at 06:17HelloSuppose configuring system clock to 168MHz.According to page 226 of RM0090_Rev9, it is recommended to set PLLM in a way to achieve 2MHz for VCO input frequency(e.g. 8MHz HSE with PLLM=4) in order to limit jitter a...
Posted on May 25, 2015 at 15:27 My STM32VL discovery board shows as having an up-to-date firmware of V1J13S0 according to the ST-LINK utility, but the USB implementation is still broken, causing a long delay and numerous kernel errors and warnin...
Posted on May 25, 2015 at 12:53Hi!I have one question: why when I update the timer PSC, ARR and CCR1 registers to change the frequency of PWM signal, the first pulse is generated with the earlier frequency and only second and next have desired frequ...
Posted on May 24, 2015 at 13:36Hi to all i want to trigger DMA on MEM2MEM State and use it by fsmc to run an External 12 bit DAC(AD5445) in 50ns Step. is there any way to do that without using interrupt? #dma #memory #fsmc #timer-trigger #mem2mem...
Posted on May 25, 2015 at 14:26We have a solution, which reading audio file from SDCard and playing by I2S. It works ok when the CPU Clock Speed is >= 84Mhz. To reducing the Power Consumption, we have to reducing the CPU Clock Speed to 24MHz, then t...
Posted on March 18, 2014 at 03:12Hello, I am planning on using the SDADC in STM32F37x microcontroller. The data sheets says the sampling frequency is between 500 kHz ~ 6 MHz, depending on the clock signal driving the SDADC. The output data rate is...
