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Posted on June 17, 2013 at 12:32I am using STM32F205 with 120Mhz interanl PLL(HSI).I have to interface SD Card on SPI with <= 24Mhz. Problem is with 120Mhz sysclk I can only obtain SPI-30Mhz(can't use of SD), 15Mhz(too slow)and other lower freq.Now ...
Posted on June 15, 2013 at 13:38Hi, In our system, our main code loop repeats every 12 seconds and refreshs the watchdog counter. When refreshing the counter, I toggle an LED. The only problem is the blink period. I would lke the watchdog running LE...
Posted on June 15, 2013 at 03:44I'm looking for confirmation (first hand knowledge, please -- speculation is usless) that PA3 on the F37x and F38x are in fact at pin 18 and not on pin 17 as it is for all the other LQDP64-packaged F1xx, F2xx, F3xx, a...
Posted on October 05, 2012 at 09:45Hello, for STM32F1xx a self-test library is available as described in AN3307. Is a similar library available for STM32F2xx? Or can the same library be adapted for STM32F2xx? Bodo
Posted on June 17, 2013 at 11:01I have used following code to get CLKout on PC9 but it didn't work:Sysyteminit() was called earlier. /*Enable or disable the AHB1 peripheral clock */ RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); /*Configu...
Posted on June 16, 2013 at 12:38I'm using IAR. My board wold not get programated. In fact the program annonce that the program was successfully downloaded and the debug mode is opned but the program in the stm32 wold not change :\ when I chek the de...
Posted on June 16, 2013 at 06:32Hey guys,I would be very grateful if someone help me for the following issue.I want to compile and save some information in an indoor internal SRAMmicrocontroller when power supply of microcontroller goes offline,thos...
Posted on June 15, 2013 at 08:00HI, I'm starting to implement my own bootloader for STM32F2xx. Currently I plan to support UART, USB and ETH. Also I plan to use EEPROM emulation. Implementation of USB and ETH (TCPIP Socket) takes about 30K. So To b...
Posted on June 15, 2013 at 22:18I am trying to configure the NVIC for the first time. In looking online for help, most project reference these functions: NVIC_InitTypeDef NVIC_InitStructure; /* Enable the TIM2 gloabal Interrupt */ NVIC_InitStr...
Posted on May 14, 2013 at 23:02Is it possible to use DMA for USB transfers? My understanding of the STM32 DMA controller is that it will transfer data from one place to another without CPU usage. If I were moving data from RAM to a DAC output, I can...
