I've previously used other LPC devices and understand how the valid user code checksum works, but now using the LPC55 (Cortex-M33) device in new project, and doesn't look like it uses the valid user code checksum. The linker map shows it being generated, and startup code has the declaration, but it's not getting put into the vector table. The vector table seems to have another entry for SecureFault_Handler where the checksum is normally placed. And when I inspect the hex file, the 8th entry is location of SecureFault_Handler from linker map.
Does the LPC55xx / Cortex-M33 use the valid user code checksum, and if not is there another similar option to verify the vector table is valid ?
WEAK extern void __valid_user_code_checksum();
extern void _vStackBase(void);
//*****************************************************************************
//*****************************************************************************
#if defined (__cplusplus)
} // extern "C"
#endif
//*****************************************************************************
// The vector table.
// This relies on the linker script to place at correct location in memory.
//*****************************************************************************
extern void (* const g_pfnVectors[])(void);
extern void * __Vectors __attribute__ ((alias ("g_pfnVectors")));
__attribute__ ((used, section(".isr_vector")))
void (* const g_pfnVectors[])(void) = {
// Core Level - CM33
&_vStackTop, // The initial stack pointer
ResetISR, // The reset handler
NMI_Handler, // The NMI handler
HardFault_Handler, // The hard fault handler
MemManage_Handler, // The MPU fault handler
BusFault_Handler, // The bus fault handler
UsageFault_Handler, // The usage fault handler
SecureFault_Handler, // The secure fault handler
0, // ECRP
0, // Reserved
0, // Reserved
SVC_Handler, // SVCall handler
DebugMon_Handler, // Debug monitor handler
0, // Reserved
