STM32 MCUs products

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STM32F407 external frequency counting

Posted on October 16, 2013 at 11:17Hello folks, i have to try write a C-Code for counting an external frequency in a Range of 250ms. I tried to use the encoder mode, but i think it is impossible only with one signal. In my project i have only one fr...

Software interrupt doesn't work - please help

Posted on September 09, 2013 at 17:04Hi, I try to set a software interrupt. I set it as follows: &sharpdefine HZ500_EXT_INT_LINE                                EXTI_Line1 &sharpdefine HZ500_EXT_INT_IRQ                                    EXTI1_IRQn &...

igal by Associate II
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delay func using TIM2

Posted on October 12, 2013 at 18:10 I want to write function using timer 2 for have millisecond in STM32F103 I just don't know why this doesn't work! TIMER2 config: void config_TIM2() { NVIC_InitTypeDef NVIC_InitStructur...

_behn4m by Associate II
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STM32 F0 hangs when using USART & interrupts

Posted on October 04, 2013 at 04:46Hi, I'm trying t owrite robust code for USART communication with embedded modem like module. Since communication is not strict command-response manner, but module can send messages also in asynhrounous manner (spor...

Stm32L151rct6a EXTI Configuration Hang Problem

Posted on October 03, 2013 at 08:47STM32L151RCT6A under IAR Compiler, board hangs when I do these steps  /* Enable SYSCFG clock */  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);  /* Connect EXTI1 Line to PA9 pin */  SYSCFG_EXTILineConfig(EX...

STM32F407 and i2c2 interrupt

Posted on September 26, 2013 at 00:02I am working on a project with the STM32F407 communicating to a 8051 micro with i2c.  I can read from the slave(8051) with no problems but when I try to send more than 3 bytes to the slave I get an ARBLOST error....

james by Associate
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STM32F4 Unusual interrupt behaviour

Posted on September 12, 2013 at 10:44 So, here the situation. There is high priority asynchronous external interrupt and low priority systick interrupt. In EXTI handler I disable all interrupts and make pulse on test output 1 In S...

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System Handler Priority Config on STM32F4

Posted on September 07, 2013 at 14:33I need to change some system handlers interrupts priorities, but I could not find this function NVIC_SystemHandlerPriorityConfig or something. CMSIS 3.20 & STM32F407 MCU. Can anyone help me? #stm32f4 #systemha...

Setting up a 18 MHz timer

Posted on September 05, 2013 at 17:43Hi guys, I've got a stm32f10zg eval board and am trying to set up a timer on it to generate an interrupt at a frequency of 8MHz. I've got the PLL set up a a x9 so that the timer is getting a 72 MHz input clock. I...

STM32 Timers + Interruptions - Error

Posted on August 28, 2013 at 12:46 Hi, I set an interruption handler for a timer. Each time it calls the handler I change the state of a IO. But I'm getting problems for frequency above 80kHz. If I set the period to: TIM_TimeBas...

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ee06091 by Associate III
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