1 //*****************************************************************************
2 // MKL27Z644 startup code for use with MCUXpresso IDE
3 //
4 // Version : 160420
5 //*****************************************************************************
6 //
7 // Copyright 2016-2020 NXP
8 // All rights reserved.
9 //
10 // SPDX-License-Identifier: BSD-3-Clause
11 //*****************************************************************************
12
13 #if defined (DEBUG)
14 #pragma GCC push_options
15 #pragma GCC optimize ("Og")
16 #endif // (DEBUG)
17
18 #if defined (__cplusplus)
19 #ifdef __REDLIB__
20 #error Redlib does not support C++
21 #else
22 //*****************************************************************************
23 //
24 // The entry point for the C++ library startup
25 //
26 //*****************************************************************************
27 extern "C" {
28 extern void __libc_init_array(void);
29 }
30 #endif
31 #endif
32
33 #define WEAK __attribute__ ((weak))
34 #define WEAK_AV __attribute__ ((weak, section(".after_vectors")))
35 #define ALIAS(f) __attribute__ ((weak, alias (#f)))
36
37 //*****************************************************************************
38 #if defined (__cplusplus)
39 extern "C" {
40 #endif
41
42 //*****************************************************************************
43 // Flash Configuration block : 16-byte flash configuration field that stores
44 // default protection settings (loaded on reset) and security information that
45 // allows the MCU to restrict access to the Flash Memory module.
46 // Placed at address 0x400 by the linker script.
47 //*****************************************************************************
48 __attribute__ ((used,section(".FlashConfig"))) const struct {
49 unsigned int word1;
50 unsigned int word2;
51 unsigned int word3;
52 unsigned int word4;
53 } Flash_Config = {0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF3DFE};
54 //*****************************************************************************
55 // Declaration of external SystemInit function
56 //*****************************************************************************
57 #if defined (__USE_CMSIS)
58 extern void SystemInit(void);
59 #endif // (__USE_CMSIS)
60
61 //*****************************************************************************
62 // Forward declaration of the core exception handlers.
63 // When the application defines a handler (with the same name), this will
64 // automatically take precedence over these weak definitions.
65 // If your application is a C++ one, then any interrupt handlers defined
66 // in C++ files within in your main application will need to have C linkage
67 // rather than C++ linkage. To do this, make sure that you are using extern "C"
68 // { .... } around the interrupt handler within your main application code.
69 //*****************************************************************************
70 void ResetISR(void);
71 WEAK void NMI_Handler(void);
72 WEAK void HardFault_Handler(void);
73 WEAK void SVC_Handler(void);
74 WEAK void PendSV_Handler(void);
75 WEAK void SysTick_Handler(void);
76 WEAK void IntDefaultHandler(void);
77
78 //*****************************************************************************
79 // Forward declaration of the application IRQ handlers. When the application
80 // defines a handler (with the same name), this will automatically take
81 // precedence over weak definitions below
82 //*****************************************************************************
83 WEAK void DMA0_IRQHandler(void);
84 WEAK void DMA1_IRQHandler(void);
85 WEAK void DMA2_IRQHandler(void);
86 WEAK void DMA3_IRQHandler(void);
87 WEAK void Reserved20_IRQHandler(void);
88 WEAK void FTFA_IRQHandler(void);
89 WEAK void PMC_IRQHandler(void);
90 WEAK void LLWU_IRQHandler(void);
91 WEAK void I2C0_IRQHandler(void);
92 WEAK void I2C1_IRQHandler(void);
93 WEAK void SPI0_IRQHandler(void);
94 WEAK void SPI1_IRQHandler(void);
95 WEAK void LPUART0_IRQHandler(void);
96 WEAK void LPUART1_IRQHandler(void);
97 WEAK void UART2_FLEXIO_IRQHandler(void);
98 WEAK void ADC0_IRQHandler(void);
99 WEAK void CMP0_IRQHandler(void);
100 WEAK void TPM0_IRQHandler(void);
101 WEAK void TPM1_IRQHandler(void);
102 WEAK void TPM2_IRQHandler(void);
103 WEAK void RTC_IRQHandler(void);
104 WEAK void RTC_Seconds_IRQHandler(void);
105 WEAK void PIT_IRQHandler(void);
106 WEAK void Reserved39_IRQHandler(void);
107 WEAK void USB0_IRQHandler(void);
108 WEAK void Reserved41_IRQHandler(void);
109 WEAK void Reserved42_IRQHandler(void);
110 WEAK void Reserved43_IRQHandler(void);
111 WEAK void LPTMR0_IRQHandler(void);
112 WEAK void Reserved45_IRQHandler(void);
113 WEAK void PORTA_IRQHandler(void);
114 WEAK void PORTB_PORTC_PORTD_PORTE_IRQHandler(void);
115
116 //*****************************************************************************
117 // Forward declaration of the driver IRQ handlers. These are aliased
118 // to the IntDefaultHandler, which is a 'forever' loop. When the driver
119 // defines a handler (with the same name), this will automatically take
120 // precedence over these weak definitions
121 //*****************************************************************************
122 void DMA0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
123 void DMA1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
124 void DMA2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
125 void DMA3_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
126 void Reserved20_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
127 void FTFA_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
128 void PMC_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
129 void LLWU_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
130 void I2C0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
131 void I2C1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
132 void SPI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
133 void SPI1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
134 void LPUART0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
135 void LPUART1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
136 void UART2_FLEXIO_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
137 void ADC0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
138 void CMP0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
139 void TPM0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
140 void TPM1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
141 void TPM2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
142 void RTC_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
143 void RTC_Seconds_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
144 void PIT_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
145 void Reserved39_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
146 void USB0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
147 void Reserved41_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
148 void Reserved42_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
149 void Reserved43_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
150 void LPTMR0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
151 void Reserved45_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
152 void PORTA_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
153 void PORTB_PORTC_PORTD_PORTE_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
154
155 //*****************************************************************************
156 // The entry point for the application.
157 // __main() is the entry point for Redlib based applications
158 // main() is the entry point for Newlib based applications
159 //*****************************************************************************
160 #if defined (__REDLIB__)
161 extern void __main(void);
162 #endif
163 extern int main(void);
164
165 //*****************************************************************************
166 // External declaration for the pointer to the stack top from the Linker Script
167 //*****************************************************************************
168 extern void _vStackTop(void);
169 //*****************************************************************************
170 #if defined (__cplusplus)
171 } // extern "C"
172 #endif
173 //*****************************************************************************
174 // The vector table.
175 // This relies on the linker script to place at correct location in memory.
176 //*****************************************************************************
177
178
179
180 extern void (* const g_pfnVectors[])(void);
181 extern void * __Vectors __attribute__ ((alias ("g_pfnVectors")));
182
183 __attribute__ ((used, section(".isr_vector")))
184 void (* const g_pfnVectors[])(void) = {
185 // Core Level - CM0P
186 &_vStackTop, // The initial stack pointer
187 ResetISR, // The reset handler
188 NMI_Handler, // The NMI handler
189 HardFault_Handler, // The hard fault handler
190 0, // Reserved
191 0, // Reserved
192 0, // Reserved
193 0, // Reserved
194 0, // Reserved
195 0, // Reserved
196 0, // Reserved
197 SVC_Handler, // SVCall handler
198 0, // Reserved
199 0, // Reserved
200 PendSV_Handler, // The PendSV handler
201 SysTick_Handler, // The SysTick handler
202
203 // Chip Level - MKL27Z644
204 DMA0_IRQHandler, // 16: DMA channel 0 transfer complete
205 DMA1_IRQHandler, // 17: DMA channel 1 transfer complete
206 DMA2_IRQHandler, // 18: DMA channel 2 transfer complete
207 DMA3_IRQHandler, // 19: DMA channel 3 transfer complete
208 Reserved20_IRQHandler, // 20: Reserved interrupt
209 FTFA_IRQHandler, // 21: Command complete and read collision
210 PMC_IRQHandler, // 22: Low-voltage detect, low-voltage warning
211 LLWU_IRQHandler, // 23: Low leakage wakeup
212 I2C0_IRQHandler, // 24: I2C0 interrupt
213 I2C1_IRQHandler, // 25: I2C1 interrupt
214 SPI0_IRQHandler, // 26: SPI0 single interrupt vector for all sources
215 SPI1_IRQHandler, // 27: SPI1 single interrupt vector for all sources
216 LPUART0_IRQHandler, // 28: LPUART0 status and error
217 LPUART1_IRQHandler, // 29: LPUART1 status and error
218 UART2_FLEXIO_IRQHandler, // 30: UART2 or FLEXIO
219 ADC0_IRQHandler, // 31: ADC0 interrupt
220 CMP0_IRQHandler, // 32: CMP0 interrupt
221 TPM0_IRQHandler, // 33: TPM0 single interrupt vector for all sources
222 TPM1_IRQHandler, // 34: TPM1 single interrupt vector for all sources
223 TPM2_IRQHandler, // 35: TPM2 single interrupt vector for all sources
224 RTC_IRQHandler, // 36: RTC alarm
225 RTC_Seconds_IRQHandler, // 37: RTC seconds
226 PIT_IRQHandler, // 38: PIT interrupt
227 Reserved39_IRQHandler, // 39: Reserved interrupt
228 USB0_IRQHandler, // 40: USB0 interrupt
229 Reserved41_IRQHandler, // 41: Reserved interrupt
230 Reserved42_IRQHandler, // 42: Reserved interrupt
231 Reserved43_IRQHandler, // 43: Reserved interrupt
232 LPTMR0_IRQHandler, // 44: LPTMR0 interrupt
233 Reserved45_IRQHandler, // 45: Reserved interrupt
234 PORTA_IRQHandler, // 46: PORTA Pin detect
235 PORTB_PORTC_PORTD_PORTE_IRQHandler, // 47: Single interrupt vector for PORTB,PORTC,PORTD,PORTE
236
237
238 }; /* End of g_pfnVectors */
239
240 //*****************************************************************************
241 // Functions to carry out the initialization of RW and BSS data sections. These
242 // are written as separate functions rather than being inlined within the
243 // ResetISR() function in order to cope with MCUs with multiple banks of
244 // memory.
245 //*****************************************************************************
246 __attribute__ ((section(".after_vectors.init_data")))
data_init(unsigned int romstart,unsigned int start,unsigned int len)247 void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
248 unsigned int *pulDest = (unsigned int*) start;
249 unsigned int *pulSrc = (unsigned int*) romstart;
250 unsigned int loop;
251 for (loop = 0; loop < len; loop = loop + 4)
252 *pulDest++ = *pulSrc++;
253 }
254
255 __attribute__ ((section(".after_vectors.init_bss")))
bss_init(unsigned int start,unsigned int len)256 void bss_init(unsigned int start, unsigned int len) {
257 unsigned int *pulDest = (unsigned int*) start;
258 unsigned int loop;
259 for (loop = 0; loop < len; loop = loop + 4)
260 *pulDest++ = 0;
261 }
262
263 //*****************************************************************************
264 // The following symbols are constructs generated by the linker, indicating
265 // the location of various points in the "Global Section Table". This table is
266 // created by the linker via the Code Red managed linker script mechanism. It
267 // contains the load address, execution address and length of each RW data
268 // section and the execution and length of each BSS (zero initialized) section.
269 //*****************************************************************************
270 extern unsigned int __data_section_table;
271 extern unsigned int __data_section_table_end;
272 extern unsigned int __bss_section_table;
273 extern unsigned int __bss_section_table_end;
274
275 //*****************************************************************************
276 // Reset entry point for your code.
277 // Sets up a simple runtime environment and initializes the C/C++
278 // library.
279 //*****************************************************************************
280 __attribute__ ((section(".after_vectors.reset")))
ResetISR(void)281 void ResetISR(void) {
282
283 // Disable interrupts
284 __asm volatile ("cpsid i");
285
286
287 #if defined (__USE_CMSIS)
288 // If __USE_CMSIS defined, then call CMSIS SystemInit code
289 SystemInit();
290
291 #else
292 // Disable Watchdog
293 // SIM->COPC register: COPT=0,COPCLKS=0,COPW=0
294 *((volatile unsigned int *)0x40048100) = 0x00u;
295 #endif // (__USE_CMSIS)
296
297 //
298 // Copy the data sections from flash to SRAM.
299 //
300 unsigned int LoadAddr, ExeAddr, SectionLen;
301 unsigned int *SectionTableAddr;
302
303 // Load base address of Global Section Table
304 SectionTableAddr = &__data_section_table;
305
306 // Copy the data sections from flash to SRAM.
307 while (SectionTableAddr < &__data_section_table_end) {
308 LoadAddr = *SectionTableAddr++;
309 ExeAddr = *SectionTableAddr++;
310 SectionLen = *SectionTableAddr++;
311 data_init(LoadAddr, ExeAddr, SectionLen);
312 }
313
314 // At this point, SectionTableAddr = &__bss_section_table;
315 // Zero fill the bss segment
316 while (SectionTableAddr < &__bss_section_table_end) {
317 ExeAddr = *SectionTableAddr++;
318 SectionLen = *SectionTableAddr++;
319 bss_init(ExeAddr, SectionLen);
320 }
321
322
323 #if !defined (__USE_CMSIS)
324 // Assume that if __USE_CMSIS defined, then CMSIS SystemInit code
325 // will setup the VTOR register
326
327 // Check to see if we are running the code from a non-zero
328 // address (eg RAM, external flash), in which case we need
329 // to modify the VTOR register to tell the CPU that the
330 // vector table is located at a non-0x0 address.
331 unsigned int * pSCB_VTOR = (unsigned int *) 0xE000ED08;
332 if ((unsigned int *)g_pfnVectors!=(unsigned int *) 0x00000000) {
333 *pSCB_VTOR = (unsigned int)g_pfnVectors;
334 }
335 #endif // (__USE_CMSIS)
336 #if defined (__cplusplus)
337 //
338 // Call C++ library initialisation
339 //
340 __libc_init_array();
341 #endif
342
343 // Reenable interrupts
344 __asm volatile ("cpsie i");
345
346 #if defined (__REDLIB__)
347 // Call the Redlib library, which in turn calls main()
348 __main();
349 #else
350 main();
351 #endif
352
353 //
354 // main() shouldn't return, but if it does, we'll just enter an infinite loop
355 //
356 while (1) {
357 ;
358 }
359 }
360
361 //*****************************************************************************
362 // Default core exception handlers. Override the ones here by defining your own
363 // handler routines in your application code.
364 //*****************************************************************************
NMI_Handler(void)365 WEAK_AV void NMI_Handler(void)
366 { while(1) {}
367 }
368
HardFault_Handler(void)369 WEAK_AV void HardFault_Handler(void)
370 { while(1) {}
371 }
372
SVC_Handler(void)373 WEAK_AV void SVC_Handler(void)
374 { while(1) {}
375 }
376
PendSV_Handler(void)377 WEAK_AV void PendSV_Handler(void)
378 { while(1) {}
379 }
380
SysTick_Handler(void)381 WEAK_AV void SysTick_Handler(void)
382 { while(1) {}
383 }
384
385 //*****************************************************************************
386 // Processor ends up here if an unexpected interrupt occurs or a specific
387 // handler is not present in the application code.
388 //*****************************************************************************
IntDefaultHandler(void)389 WEAK_AV void IntDefaultHandler(void)
390 { while(1) {}
391 }
392
393 //*****************************************************************************
394 // Default application exception handlers. Override the ones here by defining
395 // your own handler routines in your application code. These routines call
396 // driver exception handlers or IntDefaultHandler() if no driver exception
397 // handler is included.
398 //*****************************************************************************
DMA0_IRQHandler(void)399 WEAK_AV void DMA0_IRQHandler(void)
400 { DMA0_DriverIRQHandler();
401 }
402
DMA1_IRQHandler(void)403 WEAK_AV void DMA1_IRQHandler(void)
404 { DMA1_DriverIRQHandler();
405 }
406
DMA2_IRQHandler(void)407 WEAK_AV void DMA2_IRQHandler(void)
408 { DMA2_DriverIRQHandler();
409 }
410
DMA3_IRQHandler(void)411 WEAK_AV void DMA3_IRQHandler(void)
412 { DMA3_DriverIRQHandler();
413 }
414
Reserved20_IRQHandler(void)415 WEAK_AV void Reserved20_IRQHandler(void)
416 { Reserved20_DriverIRQHandler();
417 }
418
FTFA_IRQHandler(void)419 WEAK_AV void FTFA_IRQHandler(void)
420 { FTFA_DriverIRQHandler();
421 }
422
PMC_IRQHandler(void)423 WEAK_AV void PMC_IRQHandler(void)
424 { PMC_DriverIRQHandler();
425 }
426
LLWU_IRQHandler(void)427 WEAK_AV void LLWU_IRQHandler(void)
428 { LLWU_DriverIRQHandler();
429 }
430
I2C0_IRQHandler(void)431 WEAK_AV void I2C0_IRQHandler(void)
432 { I2C0_DriverIRQHandler();
433 }
434
I2C1_IRQHandler(void)435 WEAK_AV void I2C1_IRQHandler(void)
436 { I2C1_DriverIRQHandler();
437 }
438
SPI0_IRQHandler(void)439 WEAK_AV void SPI0_IRQHandler(void)
440 { SPI0_DriverIRQHandler();
441 }
442
SPI1_IRQHandler(void)443 WEAK_AV void SPI1_IRQHandler(void)
444 { SPI1_DriverIRQHandler();
445 }
446
LPUART0_IRQHandler(void)447 WEAK_AV void LPUART0_IRQHandler(void)
448 { LPUART0_DriverIRQHandler();
449 }
450
LPUART1_IRQHandler(void)451 WEAK_AV void LPUART1_IRQHandler(void)
452 { LPUART1_DriverIRQHandler();
453 }
454
UART2_FLEXIO_IRQHandler(void)455 WEAK_AV void UART2_FLEXIO_IRQHandler(void)
456 { UART2_FLEXIO_DriverIRQHandler();
457 }
458
ADC0_IRQHandler(void)459 WEAK_AV void ADC0_IRQHandler(void)
460 { ADC0_DriverIRQHandler();
461 }
462
CMP0_IRQHandler(void)463 WEAK_AV void CMP0_IRQHandler(void)
464 { CMP0_DriverIRQHandler();
465 }
466
TPM0_IRQHandler(void)467 WEAK_AV void TPM0_IRQHandler(void)
468 { TPM0_DriverIRQHandler();
469 }
470
TPM1_IRQHandler(void)471 WEAK_AV void TPM1_IRQHandler(void)
472 { TPM1_DriverIRQHandler();
473 }
474
TPM2_IRQHandler(void)475 WEAK_AV void TPM2_IRQHandler(void)
476 { TPM2_DriverIRQHandler();
477 }
478
RTC_IRQHandler(void)479 WEAK_AV void RTC_IRQHandler(void)
480 { RTC_DriverIRQHandler();
481 }
482
RTC_Seconds_IRQHandler(void)483 WEAK_AV void RTC_Seconds_IRQHandler(void)
484 { RTC_Seconds_DriverIRQHandler();
485 }
486
PIT_IRQHandler(void)487 WEAK_AV void PIT_IRQHandler(void)
488 { PIT_DriverIRQHandler();
489 }
490
Reserved39_IRQHandler(void)491 WEAK_AV void Reserved39_IRQHandler(void)
492 { Reserved39_DriverIRQHandler();
493 }
494
USB0_IRQHandler(void)495 WEAK_AV void USB0_IRQHandler(void)
496 { USB0_DriverIRQHandler();
497 }
498
Reserved41_IRQHandler(void)499 WEAK_AV void Reserved41_IRQHandler(void)
500 { Reserved41_DriverIRQHandler();
501 }
502
Reserved42_IRQHandler(void)503 WEAK_AV void Reserved42_IRQHandler(void)
504 { Reserved42_DriverIRQHandler();
505 }
506
Reserved43_IRQHandler(void)507 WEAK_AV void Reserved43_IRQHandler(void)
508 { Reserved43_DriverIRQHandler();
509 }
510
LPTMR0_IRQHandler(void)511 WEAK_AV void LPTMR0_IRQHandler(void)
512 { LPTMR0_DriverIRQHandler();
513 }
514
Reserved45_IRQHandler(void)515 WEAK_AV void Reserved45_IRQHandler(void)
516 { Reserved45_DriverIRQHandler();
517 }
518
PORTA_IRQHandler(void)519 WEAK_AV void PORTA_IRQHandler(void)
520 { PORTA_DriverIRQHandler();
521 }
522
PORTB_PORTC_PORTD_PORTE_IRQHandler(void)523 WEAK_AV void PORTB_PORTC_PORTD_PORTE_IRQHandler(void)
524 { PORTB_PORTC_PORTD_PORTE_DriverIRQHandler();
525 }
526
527 //*****************************************************************************
528
529 #if defined (DEBUG)
530 #pragma GCC pop_options
531 #endif // (DEBUG)
532
