STM32F103C6T6A register-level GPIO driver
Apply Embedded C concepts by structuring a register-level GPIO driver for STM32F103C6T6A.
ARCHITECTURE
Header → register definitions → driver API → application.
LOW LEVEL
Use documented peripheral base addresses and register offsets.
SAFE UPDATE
Use masks so unrelated configuration bits remain unchanged.
VERIFY
Flash the firmware and observe the GPIO pin on hardware.
- Identify the RCC clock-control register for the GPIO port.
- Enable the peripheral clock.
- Configure the GPIO pin mode and output configuration.
- Implement set, clear and read APIs.
- Build ELF/HEX and flash the board.
- Measure the pin and debug register state if it fails.
/* Register-level driver skeleton */
volatile uint32_t *gpio_reg;
void GPIO_SetPin(uint32_t mask)
{
*gpio_reg |= mask;
}
void GPIO_ClearPin(uint32_t mask)
{
*gpio_reg &= ~mask;
}KEY TAKEAWAY
Define register addresses, masks, initialization and read/write APIs, then verify behavior on hardware.