//***************************************************************************** // LPC51U68 startup code for use with MCUXpresso IDE // // Version : 160420 //***************************************************************************** // // Copyright 2016-2020 NXP // All rights reserved. // // SPDX-License-Identifier: BSD-3-Clause //***************************************************************************** #if defined (DEBUG) #pragma GCC push_options #pragma GCC optimize ("Og") #endif // (DEBUG) #if defined (__cplusplus) #ifdef __REDLIB__ #error Redlib does not support C++ #else //***************************************************************************** // // The entry point for the C++ library startup // //***************************************************************************** extern "C" { extern void __libc_init_array(void); } #endif #endif #define WEAK __attribute__ ((weak)) #define WEAK_AV __attribute__ ((weak, section(".after_vectors"))) #define ALIAS(f) __attribute__ ((weak, alias (#f))) //***************************************************************************** #if defined (__cplusplus) extern "C" { #endif //***************************************************************************** // Variable to store CRP value in. Will be placed automatically // by the linker when "Enable Code Read Protect" selected. // See crp.h header for more information //***************************************************************************** #include __CRP const unsigned int CRP_WORD = CRP_NO_CRP ; //***************************************************************************** // Declaration of external SystemInit function //***************************************************************************** #if defined (__USE_CMSIS) extern void SystemInit(void); #endif // (__USE_CMSIS) //***************************************************************************** // Forward declaration of the core exception handlers. // When the application defines a handler (with the same name), this will // automatically take precedence over these weak definitions. // If your application is a C++ one, then any interrupt handlers defined // in C++ files within in your main application will need to have C linkage // rather than C++ linkage. To do this, make sure that you are using extern "C" // { .... } around the interrupt handler within your main application code. //***************************************************************************** void ResetISR(void); WEAK void NMI_Handler(void); WEAK void HardFault_Handler(void); WEAK void SVC_Handler(void); WEAK void PendSV_Handler(void); WEAK void SysTick_Handler(void); WEAK void IntDefaultHandler(void); //***************************************************************************** // Forward declaration of the application IRQ handlers. When the application // defines a handler (with the same name), this will automatically take // precedence over weak definitions below //***************************************************************************** WEAK void WDT_BOD_IRQHandler(void); WEAK void DMA0_IRQHandler(void); WEAK void GINT0_IRQHandler(void); WEAK void GINT1_IRQHandler(void); WEAK void PIN_INT0_IRQHandler(void); WEAK void PIN_INT1_IRQHandler(void); WEAK void PIN_INT2_IRQHandler(void); WEAK void PIN_INT3_IRQHandler(void); WEAK void UTICK0_IRQHandler(void); WEAK void MRT0_IRQHandler(void); WEAK void CTIMER0_IRQHandler(void); WEAK void CTIMER1_IRQHandler(void); WEAK void SCT0_IRQHandler(void); WEAK void CTIMER3_IRQHandler(void); WEAK void FLEXCOMM0_IRQHandler(void); WEAK void FLEXCOMM1_IRQHandler(void); WEAK void FLEXCOMM2_IRQHandler(void); WEAK void FLEXCOMM3_IRQHandler(void); WEAK void FLEXCOMM4_IRQHandler(void); WEAK void FLEXCOMM5_IRQHandler(void); WEAK void FLEXCOMM6_IRQHandler(void); WEAK void FLEXCOMM7_IRQHandler(void); WEAK void ADC0_SEQA_IRQHandler(void); WEAK void ADC0_SEQB_IRQHandler(void); WEAK void ADC0_THCMP_IRQHandler(void); WEAK void Reserved41_IRQHandler(void); WEAK void Reserved42_IRQHandler(void); WEAK void USB0_NEEDCLK_IRQHandler(void); WEAK void USB0_IRQHandler(void); WEAK void RTC_IRQHandler(void); //***************************************************************************** // Forward declaration of the driver IRQ handlers. These are aliased // to the IntDefaultHandler, which is a 'forever' loop. When the driver // defines a handler (with the same name), this will automatically take // precedence over these weak definitions //***************************************************************************** void WDT_BOD_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void DMA0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void GINT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void GINT1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT2_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT3_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void UTICK0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void MRT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void CTIMER0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void CTIMER1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void SCT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void CTIMER3_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM2_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM3_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM4_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM5_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM6_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLEXCOMM7_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ADC0_SEQA_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ADC0_SEQB_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ADC0_THCMP_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved41_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved42_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void USB0_NEEDCLK_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void USB0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void RTC_DriverIRQHandler(void) ALIAS(IntDefaultHandler); //***************************************************************************** // The entry point for the application. // __main() is the entry point for Redlib based applications // main() is the entry point for Newlib based applications //***************************************************************************** #if defined (__REDLIB__) extern void __main(void); #endif extern int main(void); //***************************************************************************** // External declaration for the pointer to the stack top from the Linker Script //***************************************************************************** extern void _vStackTop(void); //***************************************************************************** // External declaration for LPC MCU vector table checksum from Linker Script //***************************************************************************** WEAK extern void __valid_user_code_checksum(); //***************************************************************************** //***************************************************************************** #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 - CM0P &_vStackTop, // The initial stack pointer ResetISR, // The reset handler NMI_Handler, // The NMI handler HardFault_Handler, // The hard fault handler 0, // Reserved 0, // Reserved 0, // Reserved __valid_user_code_checksum, // LPC MCU checksum 0, // ECRP 0, // Reserved 0, // Reserved SVC_Handler, // SVCall handler 0, // Reserved 0, // Reserved PendSV_Handler, // The PendSV handler SysTick_Handler, // The SysTick handler // Chip Level - LPC51U68 WDT_BOD_IRQHandler, // 16: Windowed watchdog timer, Brownout detect DMA0_IRQHandler, // 17: DMA controller GINT0_IRQHandler, // 18: GPIO group 0 GINT1_IRQHandler, // 19: GPIO group 1 PIN_INT0_IRQHandler, // 20: Pin interrupt 0 or pattern match engine slice 0 PIN_INT1_IRQHandler, // 21: Pin interrupt 1or pattern match engine slice 1 PIN_INT2_IRQHandler, // 22: Pin interrupt 2 or pattern match engine slice 2 PIN_INT3_IRQHandler, // 23: Pin interrupt 3 or pattern match engine slice 3 UTICK0_IRQHandler, // 24: Micro-tick Timer MRT0_IRQHandler, // 25: Multi-rate timer CTIMER0_IRQHandler, // 26: Standard counter/timer CTIMER0 CTIMER1_IRQHandler, // 27: Standard counter/timer CTIMER1 SCT0_IRQHandler, // 28: SCTimer/PWM CTIMER3_IRQHandler, // 29: Standard counter/timer CTIMER3 FLEXCOMM0_IRQHandler, // 30: Flexcomm Interface 0 (USART, SPI, I2C) FLEXCOMM1_IRQHandler, // 31: Flexcomm Interface 1 (USART, SPI, I2C) FLEXCOMM2_IRQHandler, // 32: Flexcomm Interface 2 (USART, SPI, I2C) FLEXCOMM3_IRQHandler, // 33: Flexcomm Interface 3 (USART, SPI, I2C) FLEXCOMM4_IRQHandler, // 34: Flexcomm Interface 4 (USART, SPI, I2C) FLEXCOMM5_IRQHandler, // 35: Flexcomm Interface 5 (USART, SPI, I2C) FLEXCOMM6_IRQHandler, // 36: Flexcomm Interface 6 (USART, SPI, I2C, I2S) FLEXCOMM7_IRQHandler, // 37: Flexcomm Interface 7 (USART, SPI, I2C, I2S) ADC0_SEQA_IRQHandler, // 38: ADC0 sequence A completion. ADC0_SEQB_IRQHandler, // 39: ADC0 sequence B completion. ADC0_THCMP_IRQHandler, // 40: ADC0 threshold compare and error. Reserved41_IRQHandler, // 41: Reserved interrupt Reserved42_IRQHandler, // 42: Reserved interrupt USB0_NEEDCLK_IRQHandler, // 43: USB Activity Wake-up Interrupt USB0_IRQHandler, // 44: USB device RTC_IRQHandler, // 45: RTC alarm and wake-up interrupts }; /* End of g_pfnVectors */ //***************************************************************************** // Functions to carry out the initialization of RW and BSS data sections. These // are written as separate functions rather than being inlined within the // ResetISR() function in order to cope with MCUs with multiple banks of // memory. //***************************************************************************** __attribute__ ((section(".after_vectors.init_data"))) void data_init(unsigned int romstart, unsigned int start, unsigned int len) { unsigned int *pulDest = (unsigned int*) start; unsigned int *pulSrc = (unsigned int*) romstart; unsigned int loop; for (loop = 0; loop < len; loop = loop + 4) *pulDest++ = *pulSrc++; } __attribute__ ((section(".after_vectors.init_bss"))) void bss_init(unsigned int start, unsigned int len) { unsigned int *pulDest = (unsigned int*) start; unsigned int loop; for (loop = 0; loop < len; loop = loop + 4) *pulDest++ = 0; } //***************************************************************************** // The following symbols are constructs generated by the linker, indicating // the location of various points in the "Global Section Table". This table is // created by the linker via the Code Red managed linker script mechanism. It // contains the load address, execution address and length of each RW data // section and the execution and length of each BSS (zero initialized) section. //***************************************************************************** extern unsigned int __data_section_table; extern unsigned int __data_section_table_end; extern unsigned int __bss_section_table; extern unsigned int __bss_section_table_end; //***************************************************************************** // Reset entry point for your code. // Sets up a simple runtime environment and initializes the C/C++ // library. //***************************************************************************** __attribute__ ((section(".after_vectors.reset"))) void ResetISR(void) { // Disable interrupts __asm volatile ("cpsid i"); // Enable SRAM clock used by Stack __asm volatile ("LDR R0, =0x40000220\n\t" "MOV R1, #56\n\t" "STR R1, [R0]"); #if defined (__USE_CMSIS) // If __USE_CMSIS defined, then call CMSIS SystemInit code SystemInit(); #endif // (__USE_CMSIS) // // Copy the data sections from flash to SRAM. // unsigned int LoadAddr, ExeAddr, SectionLen; unsigned int *SectionTableAddr; // Load base address of Global Section Table SectionTableAddr = &__data_section_table; // Copy the data sections from flash to SRAM. while (SectionTableAddr < &__data_section_table_end) { LoadAddr = *SectionTableAddr++; ExeAddr = *SectionTableAddr++; SectionLen = *SectionTableAddr++; data_init(LoadAddr, ExeAddr, SectionLen); } // At this point, SectionTableAddr = &__bss_section_table; // Zero fill the bss segment while (SectionTableAddr < &__bss_section_table_end) { ExeAddr = *SectionTableAddr++; SectionLen = *SectionTableAddr++; bss_init(ExeAddr, SectionLen); } #if !defined (__USE_CMSIS) // Assume that if __USE_CMSIS defined, then CMSIS SystemInit code // will setup the VTOR register // Check to see if we are running the code from a non-zero // address (eg RAM, external flash), in which case we need // to modify the VTOR register to tell the CPU that the // vector table is located at a non-0x0 address. unsigned int * pSCB_VTOR = (unsigned int *) 0xE000ED08; if ((unsigned int *)g_pfnVectors!=(unsigned int *) 0x00000000) { *pSCB_VTOR = (unsigned int)g_pfnVectors; } #endif // (__USE_CMSIS) #if defined (__cplusplus) // // Call C++ library initialisation // __libc_init_array(); #endif // Reenable interrupts __asm volatile ("cpsie i"); #if defined (__REDLIB__) // Call the Redlib library, which in turn calls main() __main(); #else main(); #endif // // main() shouldn't return, but if it does, we'll just enter an infinite loop // while (1) { ; } } //***************************************************************************** // Default core exception handlers. Override the ones here by defining your own // handler routines in your application code. //***************************************************************************** WEAK_AV void NMI_Handler(void) { while(1) {} } WEAK_AV void HardFault_Handler(void) { while(1) {} } WEAK_AV void SVC_Handler(void) { while(1) {} } WEAK_AV void PendSV_Handler(void) { while(1) {} } WEAK_AV void SysTick_Handler(void) { while(1) {} } //***************************************************************************** // Processor ends up here if an unexpected interrupt occurs or a specific // handler is not present in the application code. //***************************************************************************** WEAK_AV void IntDefaultHandler(void) { while(1) {} } //***************************************************************************** // Default application exception handlers. Override the ones here by defining // your own handler routines in your application code. These routines call // driver exception handlers or IntDefaultHandler() if no driver exception // handler is included. //***************************************************************************** WEAK_AV void WDT_BOD_IRQHandler(void) { WDT_BOD_DriverIRQHandler(); } WEAK_AV void DMA0_IRQHandler(void) { DMA0_DriverIRQHandler(); } WEAK_AV void GINT0_IRQHandler(void) { GINT0_DriverIRQHandler(); } WEAK_AV void GINT1_IRQHandler(void) { GINT1_DriverIRQHandler(); } WEAK_AV void PIN_INT0_IRQHandler(void) { PIN_INT0_DriverIRQHandler(); } WEAK_AV void PIN_INT1_IRQHandler(void) { PIN_INT1_DriverIRQHandler(); } WEAK_AV void PIN_INT2_IRQHandler(void) { PIN_INT2_DriverIRQHandler(); } WEAK_AV void PIN_INT3_IRQHandler(void) { PIN_INT3_DriverIRQHandler(); } WEAK_AV void UTICK0_IRQHandler(void) { UTICK0_DriverIRQHandler(); } WEAK_AV void MRT0_IRQHandler(void) { MRT0_DriverIRQHandler(); } WEAK_AV void CTIMER0_IRQHandler(void) { CTIMER0_DriverIRQHandler(); } WEAK_AV void CTIMER1_IRQHandler(void) { CTIMER1_DriverIRQHandler(); } WEAK_AV void SCT0_IRQHandler(void) { SCT0_DriverIRQHandler(); } WEAK_AV void CTIMER3_IRQHandler(void) { CTIMER3_DriverIRQHandler(); } WEAK_AV void FLEXCOMM0_IRQHandler(void) { FLEXCOMM0_DriverIRQHandler(); } WEAK_AV void FLEXCOMM1_IRQHandler(void) { FLEXCOMM1_DriverIRQHandler(); } WEAK_AV void FLEXCOMM2_IRQHandler(void) { FLEXCOMM2_DriverIRQHandler(); } WEAK_AV void FLEXCOMM3_IRQHandler(void) { FLEXCOMM3_DriverIRQHandler(); } WEAK_AV void FLEXCOMM4_IRQHandler(void) { FLEXCOMM4_DriverIRQHandler(); } WEAK_AV void FLEXCOMM5_IRQHandler(void) { FLEXCOMM5_DriverIRQHandler(); } WEAK_AV void FLEXCOMM6_IRQHandler(void) { FLEXCOMM6_DriverIRQHandler(); } WEAK_AV void FLEXCOMM7_IRQHandler(void) { FLEXCOMM7_DriverIRQHandler(); } WEAK_AV void ADC0_SEQA_IRQHandler(void) { ADC0_SEQA_DriverIRQHandler(); } WEAK_AV void ADC0_SEQB_IRQHandler(void) { ADC0_SEQB_DriverIRQHandler(); } WEAK_AV void ADC0_THCMP_IRQHandler(void) { ADC0_THCMP_DriverIRQHandler(); } WEAK_AV void Reserved41_IRQHandler(void) { Reserved41_DriverIRQHandler(); } WEAK_AV void Reserved42_IRQHandler(void) { Reserved42_DriverIRQHandler(); } WEAK_AV void USB0_NEEDCLK_IRQHandler(void) { USB0_NEEDCLK_DriverIRQHandler(); } WEAK_AV void USB0_IRQHandler(void) { USB0_DriverIRQHandler(); } WEAK_AV void RTC_IRQHandler(void) { RTC_DriverIRQHandler(); } //***************************************************************************** #if defined (DEBUG) #pragma GCC pop_options #endif // (DEBUG)