//***************************************************************************** // LPC845 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 SPI0_IRQHandler(void); WEAK void SPI1_IRQHandler(void); WEAK void DAC0_IRQHandler(void); WEAK void USART0_IRQHandler(void); WEAK void USART1_IRQHandler(void); WEAK void USART2_IRQHandler(void); WEAK void Reserved22_IRQHandler(void); WEAK void I2C1_IRQHandler(void); WEAK void I2C0_IRQHandler(void); WEAK void SCT0_IRQHandler(void); WEAK void MRT0_IRQHandler(void); WEAK void CMP_CAPT_IRQHandler(void); WEAK void WDT_IRQHandler(void); WEAK void BOD_IRQHandler(void); WEAK void FLASH_IRQHandler(void); WEAK void WKT_IRQHandler(void); WEAK void ADC0_SEQA_IRQHandler(void); WEAK void ADC0_SEQB_IRQHandler(void); WEAK void ADC0_THCMP_IRQHandler(void); WEAK void ADC0_OVR_IRQHandler(void); WEAK void DMA0_IRQHandler(void); WEAK void I2C2_IRQHandler(void); WEAK void I2C3_IRQHandler(void); WEAK void CTIMER0_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 PIN_INT4_IRQHandler(void); WEAK void PIN_INT5_DAC1_IRQHandler(void); WEAK void PIN_INT6_USART3_IRQHandler(void); WEAK void PIN_INT7_USART4_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 SPI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void SPI1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void DAC0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void USART0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void USART1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void USART2_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved22_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void I2C1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void I2C0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void SCT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void MRT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void CMP_CAPT_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void WDT_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void BOD_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FLASH_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void WKT_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 ADC0_OVR_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void DMA0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void I2C2_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void I2C3_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void CTIMER0_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 PIN_INT4_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT5_DAC1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT6_USART3_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIN_INT7_USART4_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 - LPC845 SPI0_IRQHandler, // 16: SPI0 interrupt SPI1_IRQHandler, // 17: SPI1 interrupt DAC0_IRQHandler, // 18: DAC0 interrupt USART0_IRQHandler, // 19: USART0 interrupt USART1_IRQHandler, // 20: USART1 interrupt USART2_IRQHandler, // 21: USART2 interrupt Reserved22_IRQHandler, // 22: Reserved interrupt I2C1_IRQHandler, // 23: I2C1 interrupt I2C0_IRQHandler, // 24: I2C0 interrupt SCT0_IRQHandler, // 25: State configurable timer interrupt MRT0_IRQHandler, // 26: Multi-rate timer interrupt CMP_CAPT_IRQHandler, // 27: Analog comparator interrupt or Capacitive Touch interrupt WDT_IRQHandler, // 28: Windowed watchdog timer interrupt BOD_IRQHandler, // 29: BOD interrupts FLASH_IRQHandler, // 30: flash interrupt WKT_IRQHandler, // 31: Self-wake-up timer interrupt ADC0_SEQA_IRQHandler, // 32: ADC0 sequence A completion. ADC0_SEQB_IRQHandler, // 33: ADC0 sequence B completion. ADC0_THCMP_IRQHandler, // 34: ADC0 threshold compare and error. ADC0_OVR_IRQHandler, // 35: ADC0 overrun DMA0_IRQHandler, // 36: DMA0 interrupt I2C2_IRQHandler, // 37: I2C2 interrupt I2C3_IRQHandler, // 38: I2C3 interrupt CTIMER0_IRQHandler, // 39: Timer interrupt PIN_INT0_IRQHandler, // 40: Pin interrupt 0 or pattern match engine slice 0 interrupt PIN_INT1_IRQHandler, // 41: Pin interrupt 1 or pattern match engine slice 1 interrupt PIN_INT2_IRQHandler, // 42: Pin interrupt 2 or pattern match engine slice 2 interrupt PIN_INT3_IRQHandler, // 43: Pin interrupt 3 or pattern match engine slice 3 interrupt PIN_INT4_IRQHandler, // 44: Pin interrupt 4 or pattern match engine slice 4 interrupt PIN_INT5_DAC1_IRQHandler, // 45: Pin interrupt 5 or pattern match engine slice 5 interrupt or DAC1 interrupt PIN_INT6_USART3_IRQHandler, // 46: Pin interrupt 6 or pattern match engine slice 6 interrupt or UART3 interrupt PIN_INT7_USART4_IRQHandler, // 47: Pin interrupt 7 or pattern match engine slice 7 interrupt or UART4 interrupt }; /* 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 SPI0_IRQHandler(void) { SPI0_DriverIRQHandler(); } WEAK_AV void SPI1_IRQHandler(void) { SPI1_DriverIRQHandler(); } WEAK_AV void DAC0_IRQHandler(void) { DAC0_DriverIRQHandler(); } WEAK_AV void USART0_IRQHandler(void) { USART0_DriverIRQHandler(); } WEAK_AV void USART1_IRQHandler(void) { USART1_DriverIRQHandler(); } WEAK_AV void USART2_IRQHandler(void) { USART2_DriverIRQHandler(); } WEAK_AV void Reserved22_IRQHandler(void) { Reserved22_DriverIRQHandler(); } WEAK_AV void I2C1_IRQHandler(void) { I2C1_DriverIRQHandler(); } WEAK_AV void I2C0_IRQHandler(void) { I2C0_DriverIRQHandler(); } WEAK_AV void SCT0_IRQHandler(void) { SCT0_DriverIRQHandler(); } WEAK_AV void MRT0_IRQHandler(void) { MRT0_DriverIRQHandler(); } WEAK_AV void CMP_CAPT_IRQHandler(void) { CMP_CAPT_DriverIRQHandler(); } WEAK_AV void WDT_IRQHandler(void) { WDT_DriverIRQHandler(); } WEAK_AV void BOD_IRQHandler(void) { BOD_DriverIRQHandler(); } WEAK_AV void FLASH_IRQHandler(void) { FLASH_DriverIRQHandler(); } WEAK_AV void WKT_IRQHandler(void) { WKT_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 ADC0_OVR_IRQHandler(void) { ADC0_OVR_DriverIRQHandler(); } WEAK_AV void DMA0_IRQHandler(void) { DMA0_DriverIRQHandler(); } WEAK_AV void I2C2_IRQHandler(void) { I2C2_DriverIRQHandler(); } WEAK_AV void I2C3_IRQHandler(void) { I2C3_DriverIRQHandler(); } WEAK_AV void CTIMER0_IRQHandler(void) { CTIMER0_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 PIN_INT4_IRQHandler(void) { PIN_INT4_DriverIRQHandler(); } WEAK_AV void PIN_INT5_DAC1_IRQHandler(void) { PIN_INT5_DAC1_DriverIRQHandler(); } WEAK_AV void PIN_INT6_USART3_IRQHandler(void) { PIN_INT6_USART3_DriverIRQHandler(); } WEAK_AV void PIN_INT7_USART4_IRQHandler(void) { PIN_INT7_USART4_DriverIRQHandler(); } //***************************************************************************** #if defined (DEBUG) #pragma GCC pop_options #endif // (DEBUG)