419 lines
17 KiB
C
419 lines
17 KiB
C
//*****************************************************************************
|
|
// LPC407x_8x Microcontroller Startup code for use with LPCXpresso IDE
|
|
//
|
|
// Version : 140114
|
|
//*****************************************************************************
|
|
//
|
|
// Copyright(C) NXP Semiconductors, 2014
|
|
// All rights reserved.
|
|
//
|
|
// Software that is described herein is for illustrative purposes only
|
|
// which provides customers with programming information regarding the
|
|
// LPC products. This software is supplied "AS IS" without any warranties of
|
|
// any kind, and NXP Semiconductors and its licensor disclaim any and
|
|
// all warranties, express or implied, including all implied warranties of
|
|
// merchantability, fitness for a particular purpose and non-infringement of
|
|
// intellectual property rights. NXP Semiconductors assumes no responsibility
|
|
// or liability for the use of the software, conveys no license or rights under any
|
|
// patent, copyright, mask work right, or any other intellectual property rights in
|
|
// or to any products. NXP Semiconductors reserves the right to make changes
|
|
// in the software without notification. NXP Semiconductors also makes no
|
|
// representation or warranty that such application will be suitable for the
|
|
// specified use without further testing or modification.
|
|
//
|
|
// Permission to use, copy, modify, and distribute this software and its
|
|
// documentation is hereby granted, under NXP Semiconductors' and its
|
|
// licensor's relevant copyrights in the software, without fee, provided that it
|
|
// is used in conjunction with NXP Semiconductors microcontrollers. This
|
|
// copyright, permission, and disclaimer notice must appear in all copies of
|
|
// this code.
|
|
//*****************************************************************************
|
|
#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 ALIAS(f) __attribute__ ((weak, alias (#f)))
|
|
|
|
//*****************************************************************************
|
|
#if defined (__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
//*****************************************************************************
|
|
#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
|
|
// Declaration of external SystemInit function
|
|
extern void SystemInit(void);
|
|
#endif
|
|
|
|
//*****************************************************************************
|
|
//
|
|
// Forward declaration of the default handlers. These are aliased.
|
|
// When the application defines a handler (with the same name), this will
|
|
// automatically take precedence over these weak definitions
|
|
//
|
|
//*****************************************************************************
|
|
void ResetISR(void);
|
|
WEAK void NMI_Handler(void);
|
|
WEAK void HardFault_Handler(void);
|
|
WEAK void MemManage_Handler(void);
|
|
WEAK void BusFault_Handler(void);
|
|
WEAK void UsageFault_Handler(void);
|
|
WEAK void SVC_Handler(void);
|
|
WEAK void DebugMon_Handler(void);
|
|
WEAK void PendSV_Handler(void);
|
|
WEAK void SysTick_Handler(void);
|
|
WEAK void IntDefaultHandler(void);
|
|
|
|
//*****************************************************************************
|
|
//
|
|
// Forward declaration of the specific IRQ handlers. These are aliased
|
|
// to the IntDefaultHandler, which is a 'forever' loop. When the application
|
|
// defines a handler (with the same name), this will automatically take
|
|
// precedence over these weak definitions
|
|
//
|
|
//*****************************************************************************
|
|
void WDT_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void TIMER0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void TIMER1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void TIMER2_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void TIMER3_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void UART0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void UART1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void UART2_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void UART3_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void PWM1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void I2C0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void I2C1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void I2C2_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void SPI_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void SSP0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void SSP1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void PLL0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void RTC_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void EINT0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void EINT1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void EINT2_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void EINT3_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void ADC_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void BOD_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void USB_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void CAN_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void DMA_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void I2S_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
#if defined (__USE_LPCOPEN)
|
|
void ETH_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
#else
|
|
void ENET_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
#endif
|
|
void RIT_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void MCPWM_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void QEI_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void PLL1_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void USBActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void CANActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
#if defined (__USE_LPCOPEN)
|
|
void SDIO_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
#else
|
|
void MCI_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
#endif
|
|
void UART4_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void SSP2_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void LCD_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void GPIO_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void PWM0_IRQHandler(void) ALIAS(IntDefaultHandler);
|
|
void EEPROM_IRQHandler(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);
|
|
__attribute__ ((section(".isr_vector")))
|
|
void (* const g_pfnVectors[])(void) = {
|
|
// Core Level - CM4
|
|
&_vStackTop, // The initial stack pointer
|
|
ResetISR, // The reset handler
|
|
NMI_Handler, // The NMI handler
|
|
HardFault_Handler, // The hard fault handler
|
|
MemManage_Handler, // The MPU fault handler
|
|
BusFault_Handler, // The bus fault handler
|
|
UsageFault_Handler, // The usage fault handler
|
|
0, // Reserved
|
|
0, // Reserved
|
|
0, // Reserved
|
|
0, // Reserved
|
|
SVC_Handler, // SVCall handler
|
|
DebugMon_Handler, // Debug monitor handler
|
|
0, // Reserved
|
|
PendSV_Handler, // The PendSV handler
|
|
SysTick_Handler, // The SysTick handler
|
|
|
|
// Chip Level - LPC40xx
|
|
WDT_IRQHandler, // 16, 0x40 - WDT
|
|
TIMER0_IRQHandler, // 17, 0x44 - TIMER0
|
|
TIMER1_IRQHandler, // 18, 0x48 - TIMER1
|
|
TIMER2_IRQHandler, // 19, 0x4c - TIMER2
|
|
TIMER3_IRQHandler, // 20, 0x50 - TIMER3
|
|
UART0_IRQHandler, // 21, 0x54 - UART0
|
|
UART1_IRQHandler, // 22, 0x58 - UART1
|
|
UART2_IRQHandler, // 23, 0x5c - UART2
|
|
UART3_IRQHandler, // 24, 0x60 - UART3
|
|
PWM1_IRQHandler, // 25, 0x64 - PWM1
|
|
I2C0_IRQHandler, // 26, 0x68 - I2C0
|
|
I2C1_IRQHandler, // 27, 0x6c - I2C1
|
|
I2C2_IRQHandler, // 28, 0x70 - I2C2
|
|
IntDefaultHandler, // 29, Not used
|
|
SSP0_IRQHandler, // 30, 0x78 - SSP0
|
|
SSP1_IRQHandler, // 31, 0x7c - SSP1
|
|
PLL0_IRQHandler, // 32, 0x80 - PLL0 (Main PLL)
|
|
RTC_IRQHandler, // 33, 0x84 - RTC
|
|
EINT0_IRQHandler, // 34, 0x88 - EINT0
|
|
EINT1_IRQHandler, // 35, 0x8c - EINT1
|
|
EINT2_IRQHandler, // 36, 0x90 - EINT2
|
|
EINT3_IRQHandler, // 37, 0x94 - EINT3
|
|
ADC_IRQHandler, // 38, 0x98 - ADC
|
|
BOD_IRQHandler, // 39, 0x9c - BOD
|
|
USB_IRQHandler, // 40, 0xA0 - USB
|
|
CAN_IRQHandler, // 41, 0xa4 - CAN
|
|
DMA_IRQHandler, // 42, 0xa8 - GP DMA
|
|
I2S_IRQHandler, // 43, 0xac - I2S
|
|
#if defined (__USE_LPCOPEN)
|
|
ETH_IRQHandler, // 44, 0xb0 - Ethernet
|
|
SDIO_IRQHandler, // 45, 0xb4 - SD/MMC card I/F
|
|
#else
|
|
ENET_IRQHandler, // 44, 0xb0 - Ethernet
|
|
MCI_IRQHandler, // 45, 0xb4 - SD/MMC card I/F
|
|
#endif
|
|
MCPWM_IRQHandler, // 46, 0xb8 - Motor Control PWM
|
|
QEI_IRQHandler, // 47, 0xbc - Quadrature Encoder
|
|
PLL1_IRQHandler, // 48, 0xc0 - PLL1 (USB PLL)
|
|
USBActivity_IRQHandler, // 49, 0xc4 - USB Activity interrupt to wakeup
|
|
CANActivity_IRQHandler, // 50, 0xc8 - CAN Activity interrupt to wakeup
|
|
UART4_IRQHandler, // 51, 0xcc - UART4
|
|
SSP2_IRQHandler, // 52, 0xd0 - SSP2
|
|
LCD_IRQHandler, // 53, 0xd4 - LCD
|
|
GPIO_IRQHandler, // 54, 0xd8 - GPIO
|
|
PWM0_IRQHandler, // 55, 0xdc - PWM0
|
|
EEPROM_IRQHandler, // 56, 0xe0 - EEPROM
|
|
|
|
};
|
|
|
|
//*****************************************************************************
|
|
// 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")))
|
|
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")))
|
|
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")))
|
|
void
|
|
ResetISR(void) {
|
|
|
|
//
|
|
// 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 (__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)
|
|
*/
|
|
// Read CPACR (located at address 0xE000ED88)
|
|
// Set bits 20-23 to enable CP10 and CP11 coprocessors
|
|
// Write back the modified value to the CPACR
|
|
asm volatile ("LDR.W R0, =0xE000ED88\n\t"
|
|
"LDR R1, [R0]\n\t"
|
|
"ORR R1, R1, #(0xF << 20)\n\t"
|
|
"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;
|
|
}
|
|
|
|
#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
|
|
SystemInit();
|
|
#endif
|
|
|
|
#if defined (__cplusplus)
|
|
//
|
|
// Call C++ library initialisation
|
|
//
|
|
__libc_init_array();
|
|
#endif
|
|
|
|
#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 exception handlers. Override the ones here by defining your own
|
|
// handler routines in your application code.
|
|
//*****************************************************************************
|
|
__attribute__ ((section(".after_vectors")))
|
|
void NMI_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void HardFault_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void MemManage_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void BusFault_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void UsageFault_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void SVC_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void DebugMon_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
void PendSV_Handler(void)
|
|
{ while(1) {}
|
|
}
|
|
|
|
__attribute__ ((section(".after_vectors")))
|
|
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.
|
|
//
|
|
//*****************************************************************************
|
|
__attribute__ ((section(".after_vectors")))
|
|
void IntDefaultHandler(void)
|
|
{ while(1) {}
|
|
}
|