273 lines
12 KiB
C
273 lines
12 KiB
C
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Startup code for use with GNU tools.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Forward declaration of the default fault handlers.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
static void Reset_Handler(void);
|
||
|
|
static void Default_Handler(void);
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// External declaration for the interrupt handler used by the application.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
void NMI_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void HardFault_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void MemManage_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void BusFault_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void UsageFault_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void SVC_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void DebugMon_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PendSV_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void SysTick_Handler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
|
||
|
|
void WDT_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void BOD_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void Reserved_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void DMA_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void GINT0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
|
||
|
|
void PIN_INT0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT1_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT2_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT3_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void UTICK_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void MRT_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void CT32B0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void CT32B1_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void CT32B2_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void CT32B3_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void CT32B4_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void SCT0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void UART0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void UART1_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void UART2_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void UART3_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void I2C0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void I2C1_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void I2C2_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void SPI0_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void SPI1_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void ADC_SEQA_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void ADC_SEQB_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void ADC_THCMP_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void RTC_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
//void Reserved_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void MAILBOX_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void GINT1_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT4_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT5_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT6_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void PIN_INT7_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
//void Reserved_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
//void Reserved_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
//void Reserved_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void RIT_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void Reserved41_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void Reserved42_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void Reserved43_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
void Reserved44_IRQHandler(void) __attribute__((weak, alias("Default_Handler")));
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// The entry point for the application.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
extern int main(void);
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Reserve space for the system stack.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
static unsigned long pulStack[512];
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// The vector table. Note that the proper constructs must be placed on this to
|
||
|
|
// ensure that it ends up at physical address 0x0000.0000.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
__attribute__ ((section(".isr_vector")))
|
||
|
|
void (* const g_pfnVectors[])(void) =
|
||
|
|
{
|
||
|
|
(void (*)(void))((unsigned long)pulStack + sizeof(pulStack)),
|
||
|
|
// The initial stack pointer
|
||
|
|
Reset_Handler, // Reset Handler
|
||
|
|
NMI_Handler, // NMI Handler
|
||
|
|
HardFault_Handler, // Hard Fault Handler
|
||
|
|
MemManage_Handler, // MPU Fault Handler
|
||
|
|
BusFault_Handler, // Bus Fault Handler
|
||
|
|
UsageFault_Handler, // Usage Fault Handler
|
||
|
|
0, // Reserved
|
||
|
|
0, // Reserved
|
||
|
|
0, // Reserved
|
||
|
|
0, // Reserved
|
||
|
|
SVC_Handler, // SVCall Handler
|
||
|
|
DebugMon_Handler, // Debug Monitor Handler
|
||
|
|
0, // Reserved
|
||
|
|
PendSV_Handler, // PendSV Handler
|
||
|
|
SysTick_Handler, // SysTick Handler
|
||
|
|
|
||
|
|
// External Interrupts
|
||
|
|
WDT_IRQHandler,
|
||
|
|
BOD_IRQHandler,
|
||
|
|
Reserved_IRQHandler,
|
||
|
|
DMA_IRQHandler,
|
||
|
|
GINT0_IRQHandler,
|
||
|
|
PIN_INT0_IRQHandler,
|
||
|
|
PIN_INT1_IRQHandler,
|
||
|
|
PIN_INT2_IRQHandler,
|
||
|
|
PIN_INT3_IRQHandler,
|
||
|
|
UTICK_IRQHandler,
|
||
|
|
MRT_IRQHandler,
|
||
|
|
CT32B0_IRQHandler,
|
||
|
|
CT32B1_IRQHandler,
|
||
|
|
CT32B2_IRQHandler,
|
||
|
|
CT32B3_IRQHandler,
|
||
|
|
CT32B4_IRQHandler,
|
||
|
|
SCT0_IRQHandler,
|
||
|
|
UART0_IRQHandler,
|
||
|
|
UART1_IRQHandler,
|
||
|
|
UART2_IRQHandler,
|
||
|
|
UART3_IRQHandler,
|
||
|
|
I2C0_IRQHandler,
|
||
|
|
I2C1_IRQHandler,
|
||
|
|
I2C2_IRQHandler,
|
||
|
|
SPI0_IRQHandler,
|
||
|
|
SPI1_IRQHandler,
|
||
|
|
ADC_SEQA_IRQHandler,
|
||
|
|
ADC_SEQB_IRQHandler,
|
||
|
|
ADC_THCMP_IRQHandler,
|
||
|
|
RTC_IRQHandler,
|
||
|
|
Reserved_IRQHandler,
|
||
|
|
MAILBOX_IRQHandler,
|
||
|
|
GINT1_IRQHandler,
|
||
|
|
PIN_INT4_IRQHandler,
|
||
|
|
PIN_INT5_IRQHandler,
|
||
|
|
PIN_INT6_IRQHandler,
|
||
|
|
PIN_INT7_IRQHandler,
|
||
|
|
Reserved_IRQHandler,
|
||
|
|
Reserved_IRQHandler,
|
||
|
|
Reserved_IRQHandler,
|
||
|
|
RIT_IRQHandler,
|
||
|
|
Reserved41_IRQHandler,
|
||
|
|
Reserved42_IRQHandler,
|
||
|
|
Reserved43_IRQHandler,
|
||
|
|
Reserved44_IRQHandler,
|
||
|
|
};
|
||
|
|
//**RIT_IRQHandler ***************************************************************************
|
||
|
|
// Reserved41_IRQHandler
|
||
|
|
// TReserved42_IRQHandler he following are constructs created by the linker, indicating where the
|
||
|
|
// tReserved43_IRQHandler he "data" and "bss" segments reside in memory. The initializers for the
|
||
|
|
// fReserved44_IRQHandler or the "data" segment resides immediately following the "text" segment.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
extern unsigned long _etext;
|
||
|
|
extern unsigned long _data;
|
||
|
|
extern unsigned long _edata;
|
||
|
|
extern unsigned long _bss;
|
||
|
|
extern unsigned long _ebss;
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// This is the code that gets called when the processor first starts execution
|
||
|
|
// following a reset event. Only the absolutely necessary set is performed,
|
||
|
|
// after which the application supplied entry() routine is called. Any fancy
|
||
|
|
// actions (such as making decisions based on the reset cause register, and
|
||
|
|
// resetting the bits in that register) are left solely in the hands of the
|
||
|
|
// application.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
static void Reset_Handler(void)
|
||
|
|
{
|
||
|
|
unsigned long *pulSrc, *pulDest;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Copy the data segment initializers from flash to SRAM.
|
||
|
|
//
|
||
|
|
pulSrc = &_etext;
|
||
|
|
for(pulDest = &_data; pulDest < &_edata; )
|
||
|
|
{
|
||
|
|
*pulDest++ = *pulSrc++;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#if !defined (__USE_LPCOPEN)
|
||
|
|
// LPCOpen init code deals with FP and VTOR initialisation
|
||
|
|
#if defined (__VFP_FP__) && !defined (__SOFTFP__)
|
||
|
|
/*
|
||
|
|
* Code to enable the Cortex-M4 FPU only included
|
||
|
|
* if appropriate build options have been selected.
|
||
|
|
* Code taken from Section 7.1, Cortex-M4 TRM (DDI0439C)
|
||
|
|
*/
|
||
|
|
// CPACR is located at address 0xE000ED88
|
||
|
|
asm("LDR.W R0, =0xE000ED88");
|
||
|
|
// Read CPACR
|
||
|
|
asm("LDR R1, [R0]");
|
||
|
|
// Set bits 20-23 to enable CP10 and CP11 coprocessors
|
||
|
|
asm(" ORR R1, R1, #(0xF << 20)");
|
||
|
|
// Write back the modified value to the CPACR
|
||
|
|
asm("STR R1, [R0]");
|
||
|
|
#endif // (__VFP_FP__) && !(__SOFTFP__)
|
||
|
|
// ******************************
|
||
|
|
// 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.
|
||
|
|
|
||
|
|
// Note that we do not use the CMSIS register access mechanism,
|
||
|
|
// as there is no guarantee that the project has been configured
|
||
|
|
// to use CMSIS.
|
||
|
|
unsigned int * pSCB_VTOR = (unsigned int *) 0xE000ED08;
|
||
|
|
if ((unsigned int *) g_pfnVectors != (unsigned int *) 0x00000000) {
|
||
|
|
// CMSIS : SCB->VTOR = <address of vector table>
|
||
|
|
*pSCB_VTOR = (unsigned int) g_pfnVectors;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//
|
||
|
|
// Zero fill the bss segment.
|
||
|
|
//
|
||
|
|
__asm(" ldr r0, =_bss\n"
|
||
|
|
" ldr r1, =_ebss\n"
|
||
|
|
" mov r2, #0\n"
|
||
|
|
" .thumb_func\n"
|
||
|
|
"zero_loop:\n"
|
||
|
|
" cmp r0, r1\n"
|
||
|
|
" it lt\n"
|
||
|
|
" strlt r2, [r0], #4\n"
|
||
|
|
" blt zero_loop");
|
||
|
|
|
||
|
|
// call system init.
|
||
|
|
SystemInit();
|
||
|
|
|
||
|
|
//
|
||
|
|
// Call the application's entry point.
|
||
|
|
//
|
||
|
|
main();
|
||
|
|
}
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// This is the code that gets called when the processor receives an unexpected
|
||
|
|
// interrupt. This simply enters an infinite loop, preserving the system state
|
||
|
|
// for examination by a debugger.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
static void Default_Handler(void)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Go into an infinite loop.
|
||
|
|
//
|
||
|
|
while(1)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
}
|