Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on June 11, 2014 at 22:54Hi, I used CubeMX 4.2 to generate code skeleton for L053. I have no problem with simple programs (LED blinking, etc). But I cannot use systick. I understand that HAL_init() takes care of setuping the systick. Unfortun...
Posted on June 11, 2014 at 14:26I have an array of unsigned short numbers from sensors. The data will be multiplied with an array of floating point numbers.To use FPU provided by STM32F407, I need to convert the unsigned short numbers into floating ...
Posted on June 13, 2014 at 09:05Hi, I'm testing the two discovery STM32F429 and STM32F407. What I've done so far is that the 429 sends data to the 407 through UART4. The 407 interrupts at every character received, and all works fine! If I do the opp...
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
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
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...
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 ...
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...
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...
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...
