The STM32F103 shines because its hardware peripherals operate independently of the CPU core. This is the key to efficient embedded systems work.
Example EXTI0 (PA0):
void EXTI0_IRQHandler(void)
if(EXTI_GetITStatus(EXTI_Line0))
// Handle interrupt
EXTI_ClearITPendingBit(EXTI_Line0);
The STM32F103 (Cortex-M3) is a widely used 32-bit microcontroller family from STMicroelectronics offering good performance, rich peripherals, and low power for embedded applications. This guide covers hardware features, development tools, firmware architecture, peripherals, common workflows, debugging, power management, and practical tips to get a project from prototype to production. the stm32f103 arm microcontroller and embedded systems work
Embedded systems work by interacting with the external environment through peripherals. The STM32F103 integrates an extensive set of peripherals, reducing the need for external components: The STM32F103 (Cortex-M3) is a widely used 32-bit
| Peripheral Category | Specific Features | |---------------------|-------------------| | Timers | 2 advanced 16-bit timers with PWM and encoder mode, 4 general-purpose timers, 2 watchdog timers, SysTick | | Communication | Up to 2 I²C, 3 SPI, 5 USART, 1 CAN 2.0B, 1 USB 2.0 Full Speed (device-only) | | Analog | Two 12-bit ADCs (up to 16 channels), with dual-mode simultaneous sampling; two 12-bit DACs (in some variants) | | I/O | Up to 112 GPIO pins with 5V tolerance, each configurable for alternate functions | | DMA | 7-channel Direct Memory Access controller for peripheral-to-memory transfer without CPU intervention | 4 general-purpose timers
These peripherals enable the STM32F103 to read sensors (via ADC or I²C), control actuators (via PWM or GPIO), and communicate with other devices (via UART, SPI, or CAN).
This is the definitive "academic bible" for the STM32F103, offering unparalleled depth in low-level programming, though it may feel dense for hobbyists seeking quick high-level projects.