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ccm use in keil

Posted on June 13, 2014 at 08:35Dear all ,i want to use the ccm (stm32f407) at the keil uVision , but i did't find the way how to write the scatter file ? could you give me a way how to use the ccm in the keil ? thank you . #ccm

FPU in IAR IDE

Posted on June 12, 2014 at 18:22Hello,        I am using the STm32F4 discovery demo board and using the IAR IDE tool chain, Can anyone tell me how to use(enable) the Floating Point unit.Thanks for ur help.RegardsSameer  

Simple Timer TIM7 ''update event''

Posted on June 12, 2014 at 02:03 Why do I get an immediate update event when I configure TIM7 like this: TIM7->CR1 = 0; TIM7->PSC = 7199; TIM7->ARR = 2000; TIM7->DIER = 0; TIM7->CNT = 0; TIM7->CR1 = TIM_CR1_CEN; while ((TIM7->SR & TIM_SR_UIF...

gene by • Associate II
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  • 5 replies
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STM32L051 Development

Posted on May 25, 2014 at 19:09Folks, The STM32L051 looks like a good device for a new project, but there seems to be no-one stocking it and there seems to be no dev kit. Can I use the STM32F0 discovery and any code will be essentially drop-in when ...

DiBosco by • Senior II
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  • 3 replies
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STM32F100C6, ADC & DMA

Posted on June 09, 2014 at 21:37 Hello, I have a problem with configuring ADC & DMA. This is the code ADC RCC -> APB2ENR |= RCC_APB2ENR_ADC1EN; ADC1 -> CR1 |= ADC_CR1_SCAN; ADC1 -> CR2 |= ADC_CR2_EXTSEL_0 | ADC_CR2_EXTSEL_1 | ADC_C...

peter_l by • Associate II
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  • 4 replies
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Disable FPU in STM32F4 on RTX

Posted on June 12, 2014 at 10:34There is a problem, when I using FPU in some RTX task because FPU instructions is also used in RTX's SVC_Handler. So I've decided or disable FPU globally in project (didn't work, cant compile HAL_CM4.c) or disable for...

DMA MemoryToMemory using Timer for delivery rate?

Posted on January 27, 2014 at 23:27Given an F4 (F405 and F429) or even F2 .. Is it possible for a DMA to be both MemoryToMemory and have the rate of delivery be set by a timer? ie: I'm effecting a copy from an array in RAM, to a GPIO. (a byte at a t...

skeezix by • Associate II
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  • 20 replies
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STM32F4 - Quadrature + toggling

Posted on June 10, 2014 at 00:33Can you use a single timer to make a quadrature divider? What I mean by this is can you take in a quadrature signal, have the timer increase its CNT register and then toggle channels 3 & 4 based upon a particular CNT ...

dibs by • Associate II
  • 504 Views
  • 3 replies
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STM32 CAN Bootloade Problem! No response!

Posted on June 11, 2014 at 00:24Hello All, I'm trying to implement a CAN bootloader to flash my firmware over the CAN bus network. I'm using the OLIMEX STM32F405 board with CAN transceiver hooked up to both CAN peripherals. I wrote a host applicatio...

STM32F4 - FLASH Erase

Posted on December 11, 2013 at 20:54I am attempting to erase a FLASH sector, but the process hangs. Any ideas on why this might be happening?    FLASH_Unlock();    FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR |                 FLASH_FLAG_WRPER...

dibs by • Associate II
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  • 12 replies
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