What Is Vector Table In Microcontroller Instant

// The actual vector table ((section(".vectors"))) void (* const g_pfnVectors[])(void) = (void (*)(void))&_estack, // 1. Initial Stack Pointer Reset_Handler, // 2. Reset Vector NMI_Handler, // 3. NMI HardFault_Handler, // 4. Hard Fault // ... other fault vectors ... USART1_IRQHandler, // 5. The USART1 interrupt handler // ... more peripheral vectors ... ;

The ARM Cortex-M series has a standardized Vector Table. what is vector table in microcontroller

The CPU loads that address into its Program Counter (PC) and executes the ButtonPressed_ISR function. // The actual vector table ((section("

These make up the bulk of the table. Every MCU has different peripherals, so these vectors will point to handlers for: External button presses. UART/SPI/I2C: Data communication events. ADC: When an analog-to-digital conversion is finished. Why is the Vector Table Important? NMI HardFault_Handler, // 4

// These are external variables defined in your linker script and code extern unsigned long _estack; // End of RAM address for the stack void Reset_Handler(void); // Your entry point or main() void NMI_Handler(void); void HardFault_Handler(void); void USART1_IRQHandler(void); // Your serial port handler