The Stm32f103 Arm Microcontroller And Embedded Systems Work May 2026

The lifecycle of an embedded system on the STM32F103 follows a distinct workflow:

![STM32F103 Block Diagram - In text: Core, Memory, Bus Matrix, Peripherals] the stm32f103 arm microcontroller and embedded systems work

The most common variant features:

The STM32F103 shines because its hardware peripherals operate independently of the CPU core. This is the key to efficient embedded systems work. The lifecycle of an embedded system on the

Embedded systems must respond deterministically to external events. The STM32F103’s NVIC allows prioritizing interrupts. For example, an external button interrupt (on EXTI line) can wake the processor from sleep mode, enabling low-power applications. The most common variant features: The STM32F103 shines

Example EXTI0 (PA0):

void EXTI0_IRQHandler(void) 
    if(EXTI_GetITStatus(EXTI_Line0)) 
        // Handle interrupt
        EXTI_ClearITPendingBit(EXTI_Line0);

PWM example (TIM2, Channel 1 on PA0):

// Configure TIM2 for PWM, 1 kHz, 50% duty
TIM2->PSC = 7200 - 1;   // 72 MHz / 7200 = 10 kHz counter clock
TIM2->ARR = 100 - 1;    // 10 kHz / 100 = 100 Hz
TIM2->CCR1 = 50;        // 50% duty
TIM2->CCMR1 |= (6 << 4); // PWM mode 1
TIM2->CCER |= (1 << 0);  // Enable channel 1 output
TIM2->CR1 |= (1 << 0);   // Start timer