//***************************************************************************** // MKE02Z4 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 //***************************************************************************** // Flash Configuration block : 16-byte flash configuration field that stores // default protection settings (loaded on reset) and security information that // allows the MCU to restrict access to the Flash Memory module. // Placed at address 0x400 by the linker script. //***************************************************************************** __attribute__ ((used,section(".FlashConfig"))) const struct { unsigned int word1; unsigned int word2; unsigned int word3; unsigned int word4; } Flash_Config = {0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFEFFFF}; //***************************************************************************** // 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 Reserved16_IRQHandler(void); WEAK void Reserved17_IRQHandler(void); WEAK void Reserved18_IRQHandler(void); WEAK void Reserved19_IRQHandler(void); WEAK void Reserved20_IRQHandler(void); WEAK void FTMRH_IRQHandler(void); WEAK void PMC_IRQHandler(void); WEAK void IRQ_IRQHandler(void); WEAK void I2C0_IRQHandler(void); WEAK void Reserved25_IRQHandler(void); WEAK void SPI0_IRQHandler(void); WEAK void SPI1_IRQHandler(void); WEAK void UART0_IRQHandler(void); WEAK void UART1_IRQHandler(void); WEAK void UART2_IRQHandler(void); WEAK void ADC_IRQHandler(void); WEAK void ACMP0_IRQHandler(void); WEAK void FTM0_IRQHandler(void); WEAK void FTM1_IRQHandler(void); WEAK void FTM2_IRQHandler(void); WEAK void RTC_IRQHandler(void); WEAK void ACMP1_IRQHandler(void); WEAK void PIT_CH0_IRQHandler(void); WEAK void PIT_CH1_IRQHandler(void); WEAK void KBI0_IRQHandler(void); WEAK void KBI1_IRQHandler(void); WEAK void Reserved42_IRQHandler(void); WEAK void ICS_IRQHandler(void); WEAK void WDOG_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 Reserved16_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved17_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved18_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved19_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved20_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FTMRH_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PMC_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void IRQ_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void I2C0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved25_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void SPI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void SPI1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void UART0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void UART1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void UART2_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ADC_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ACMP0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FTM0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FTM1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void FTM2_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void RTC_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ACMP1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIT_CH0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void PIT_CH1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void KBI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void KBI1_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void Reserved42_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void ICS_DriverIRQHandler(void) ALIAS(IntDefaultHandler); void WDOG_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); //***************************************************************************** #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 0, // Reserved 0, // Reserved 0, // Reserved 0, // Reserved SVC_Handler, // SVCall handler 0, // Reserved 0, // Reserved PendSV_Handler, // The PendSV handler SysTick_Handler, // The SysTick handler // Chip Level - MKE02Z4 Reserved16_IRQHandler, // 16: Reserved interrupt Reserved17_IRQHandler, // 17: Reserved interrupt Reserved18_IRQHandler, // 18: Reserved interrupt Reserved19_IRQHandler, // 19: Reserved interrupt Reserved20_IRQHandler, // 20: Reserved interrupt FTMRH_IRQHandler, // 21: Command complete and error interrupt PMC_IRQHandler, // 22: Low-voltage warning IRQ_IRQHandler, // 23: External interrupt I2C0_IRQHandler, // 24: Single interrupt vector for all sources Reserved25_IRQHandler, // 25: Reserved interrupt SPI0_IRQHandler, // 26: Single interrupt vector for all sources SPI1_IRQHandler, // 27: Single interrupt vector for all sources UART0_IRQHandler, // 28: Status and error UART1_IRQHandler, // 29: Status and error UART2_IRQHandler, // 30: Status and error ADC_IRQHandler, // 31: ADC conversion complete interrupt ACMP0_IRQHandler, // 32: Analog comparator 0 interrupt FTM0_IRQHandler, // 33: FTM0 single interrupt vector for all sources FTM1_IRQHandler, // 34: FTM1 single interrupt vector for all sources FTM2_IRQHandler, // 35: FTM2 single interrupt vector for all sources RTC_IRQHandler, // 36: RTC overflow ACMP1_IRQHandler, // 37: Analog comparator 1 interrupt PIT_CH0_IRQHandler, // 38: PIT CH0 overflow PIT_CH1_IRQHandler, // 39: PIT CH1 overflow KBI0_IRQHandler, // 40: Keyboard interrupt0 KBI1_IRQHandler, // 41: Keyboard interrupt1 Reserved42_IRQHandler, // 42: Reserved interrupt ICS_IRQHandler, // 43: Clock loss of lock WDOG_IRQHandler, // 44: Watchdog timeout }; /* 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"); #if defined (__USE_CMSIS) // If __USE_CMSIS defined, then call CMSIS SystemInit code SystemInit(); #else // Disable Watchdog // Write watchdog update key to unlock *((volatile unsigned int *)0x40052002) = 0x20; *((volatile unsigned int *)0x40052003) = 0xC5; *((volatile unsigned int *)0x40052002) = 0x28; *((volatile unsigned int *)0x40052003) = 0xD9; // Set timeout value *((volatile unsigned int *)0x40052004) = 0xFF; *((volatile unsigned int *)0x40052005) = 0xFF; // Now disable watchdog via control register volatile unsigned int *WDOG_CS1 = (unsigned int *) 0x40052000; *WDOG_CS1 = (*WDOG_CS1 & ~(1 << 7)) | (1 << 5); #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 Reserved16_IRQHandler(void) { Reserved16_DriverIRQHandler(); } WEAK_AV void Reserved17_IRQHandler(void) { Reserved17_DriverIRQHandler(); } WEAK_AV void Reserved18_IRQHandler(void) { Reserved18_DriverIRQHandler(); } WEAK_AV void Reserved19_IRQHandler(void) { Reserved19_DriverIRQHandler(); } WEAK_AV void Reserved20_IRQHandler(void) { Reserved20_DriverIRQHandler(); } WEAK_AV void FTMRH_IRQHandler(void) { FTMRH_DriverIRQHandler(); } WEAK_AV void PMC_IRQHandler(void) { PMC_DriverIRQHandler(); } WEAK_AV void IRQ_IRQHandler(void) { IRQ_DriverIRQHandler(); } WEAK_AV void I2C0_IRQHandler(void) { I2C0_DriverIRQHandler(); } WEAK_AV void Reserved25_IRQHandler(void) { Reserved25_DriverIRQHandler(); } WEAK_AV void SPI0_IRQHandler(void) { SPI0_DriverIRQHandler(); } WEAK_AV void SPI1_IRQHandler(void) { SPI1_DriverIRQHandler(); } WEAK_AV void UART0_IRQHandler(void) { UART0_DriverIRQHandler(); } WEAK_AV void UART1_IRQHandler(void) { UART1_DriverIRQHandler(); } WEAK_AV void UART2_IRQHandler(void) { UART2_DriverIRQHandler(); } WEAK_AV void ADC_IRQHandler(void) { ADC_DriverIRQHandler(); } WEAK_AV void ACMP0_IRQHandler(void) { ACMP0_DriverIRQHandler(); } WEAK_AV void FTM0_IRQHandler(void) { FTM0_DriverIRQHandler(); } WEAK_AV void FTM1_IRQHandler(void) { FTM1_DriverIRQHandler(); } WEAK_AV void FTM2_IRQHandler(void) { FTM2_DriverIRQHandler(); } WEAK_AV void RTC_IRQHandler(void) { RTC_DriverIRQHandler(); } WEAK_AV void ACMP1_IRQHandler(void) { ACMP1_DriverIRQHandler(); } WEAK_AV void PIT_CH0_IRQHandler(void) { PIT_CH0_DriverIRQHandler(); } WEAK_AV void PIT_CH1_IRQHandler(void) { PIT_CH1_DriverIRQHandler(); } WEAK_AV void KBI0_IRQHandler(void) { KBI0_DriverIRQHandler(); } WEAK_AV void KBI1_IRQHandler(void) { KBI1_DriverIRQHandler(); } WEAK_AV void Reserved42_IRQHandler(void) { Reserved42_DriverIRQHandler(); } WEAK_AV void ICS_IRQHandler(void) { ICS_DriverIRQHandler(); } WEAK_AV void WDOG_IRQHandler(void) { WDOG_DriverIRQHandler(); } //***************************************************************************** #if defined (DEBUG) #pragma GCC pop_options #endif // (DEBUG)