[ FIRMWARE_LOGS ]

0x01: STM32L432KC Bare-Metal Blink

ARM CORTEX-M4

Direct register manipulation for GPIO toggling. Bypassing HAL for maximum execution efficiency.

// Enable GPIOB Clock (RCC_AHB2ENR)
RCC->AHB2ENR |= (1U << 1);

// Set PB3 to Output Mode (GPIO_MODER)
GPIOB->MODER &= ~(3U << (3 * 2));
GPIOB->MODER |= (1U << (3 * 2));

while(1) {
    GPIOB->ODR ^= (1U << 3); // Toggle LED on PB3
    for(int i = 0; i < 100000; i++); // Simple Delay
}

0x02: NVIC Interrupt Configuration

STM32F411

Configuring External Interrupt (EXTI) for real-time button debouncing via hardware priority.

// Configure NVIC for EXTI Line 0
NVIC_SetPriority(EXTI0_IRQn, 0x03);
NVIC_EnableIRQ(EXTI0_IRQn);

void EXTI0_IRQHandler(void) {
    if (EXTI->PR & (1U << 0)) {
        EXTI->PR |= (1U << 0); // Clear Pending Bit
        system_trigger_event();
    }
}

--- SYSTEM_STILL_UPLOADING_ADDITIONAL_KERNEL_LOGS ---