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Posted on February 05, 2014 at 19:19Using an STM32F407, can you have a pin set up as an output and tristated?The reason that I ask is b/c my circuit is acting like it is doing just that. With my pin configuration as follows:GPIO_InitStructure.GPIO_M...
Posted on February 06, 2014 at 07:46I wrote a code to generate rising edge interrupts for a 4MHz clock input to the board. The 4MHz input is generated by MCO while the core is pushed to 168MHz. I found that certain interrupts are not being tacked at...
Posted on February 05, 2014 at 17:20I have looked at using the STM32F427 to drive a 32 bit Universal Bus, similar to VME. I need CAN, SPI, USB etc, therefore the STM32 looks a good choice. I am finding difficulty in getting information on the FMC bu...
Posted on December 15, 2012 at 02:25On the discovery board, the digital MEMs mic data is accessed by providing a clock from i2s_2. In the Audio_playback_record example, i2s is set up to acquire data in 16b blocks, and an interrupt (AUDIO_REC_SPI_IRQ...
Posted on February 06, 2014 at 07:49I wrote a code to generate rising edge interrupts for a 4MHz clock input to the board. The 4MHz input is generated by MCO while the core is pushed to 168MHz. I found that certain interrupts are not being tacked at...
Posted on February 06, 2014 at 14:06 Hi, I need help with my Stm32F4 In this example I want to clock Tim4 with Tim2 using the slave mode. This is working fine! But when I want to use Tim4 to rise an update-interrupt this line stops the MCU. So...
Posted on February 05, 2014 at 18:41Hi All!I would like to use the STM32L152 Opamp output pin to pulse drive the MOC3020 optotriac.The pulse current should be ca 15mA-20mA for the optotriac to fire up under any temp. conditions.Can I source this a...
Posted on February 06, 2014 at 09:26Hello together, i´ve been searching for information about the minimal voltage wich has to applied to Vref-. In particularly it is around the stm32f103CBT6. I´ve used the search function in the RefManual, but co...
Posted on May 22, 2012 at 15:25Hello, I try to work with the UART4 RXNE interrupt but something went wrong. // USART2-TX, UART4-TX GPIO_StructInit(&GPIO_InitStructure); GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure...
Posted on February 05, 2014 at 23:54 I have just implementet a Low Speed Internal (LSI) oscillator calibration using a timer connected to the High Speed External (HSI) crystal. Right after I enabled the timer interrupt (and probably interrupt fi...
