TIMER (Duty and OCActive)
Posted on July 11, 2012 at 15:46Hi, I would like to know why in TIM_OCMode_PWM1, I can calculate the frequency 'Duty cicle' TIM_CLK / (TIM_Period + 1) 36MHz/(999+1) Frequencia = -----------------------------...
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TIM_ClearFlag() function in stm32f10x library
Posted on July 07, 2012 at 09:02The content of this function is /* Clear the flags */ TIMx->SR = (uint16_t)~TIM_FLAG; But I think it must be in this format: /* Clear the flags */ TIMx->SR &= (uint16_t)~TIM_FLAG; a & is needed for correct clear ...
Boundary Scan on STM32F1 µCs
Posted on July 13, 2012 at 10:56Dear ladies and gentlemen, I am currently writing on my Bachelor thesis about boundary scan and its advantages/ disadvantages. Our company is currently launching the new STM32 micro-controller family and it is my task...
issue with stvp
Posted on July 03, 2012 at 13:44Hi, As you can see from the schematic below,the ''C3'' capacitor is a low voltage 1.5F supercap that I use as backup battery to keep the mcu up during the stand-by mode. My problem is that,while I flash the program me...
Why can't I read from USARTx->SR in interrupt mode (STM32-Discovery)?
Posted on July 12, 2012 at 16:08 Hi, Hardware -> STM32-Discovery IDE-> Keil uVision getBit(USART2->SR, position) works in the non-interrupt mode, but, it doesn't in the USARTn interrupt mode...! I have linked the USART1's...
hard fault when calling standard library
Posted on July 12, 2012 at 02:23Using stm32f4 discoveryI am off to a good start with this board. I can not do floating point numbers. That is annoying but ok. I decided to move on and not use floating point numbers. When I try to fixed point I don't...
USB Hub with stm32f4 discovery
Posted on July 12, 2012 at 12:53i have connected the usb hub to the discovery board using micro usb port...now i connected a pen drive 1 to the one port on hub...i want to do is when i connect another pen drive to the 2nd port on hub...the ucontroll...
MCO <= 30Hz ?
Posted on July 12, 2012 at 18:32I'm wondering if it's possible to generate a clock (or 1PPS) on the MCO pin? I'm just not sure how far down you can divide this clock... If this isn't feasible, is it possible to generate a 1PPS with the RTC?
DMA use SRAM???????
Posted on July 11, 2012 at 14:52hi alli need to know that is DMA uses the SRAM as the DMA buffer??????if yes then my MCUstm32F407 got 112Kb and 16Kb of SRAM.and DMA max buffer size is 64kb, in the case DMA is using half of my SRAM,is there a possibi...
Accessing data stored in DMA memory by USART
Posted on July 11, 2012 at 13:55Hello ,I am new to STM32. I am reading data from USART using DMA. I dont know how to directly access data from DMA memory after transfer complete interrupt.
