cr_startup_lpc13xx.c

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//*****************************************************************************
//   +--+       
//   | ++----+   
//   +-++    |  
//     |     |  
//   +-+--+  |   
//   | +--+--+  
//   +----+    Copyright (c) 2011-12 Code Red Technologies Ltd.
//
// Microcontroller Startup code for use with Red Suite
//
// Version : 120126
//
// Software License Agreement
// 
// The software is owned by Code Red Technologies and/or its suppliers, and is 
// protected under applicable copyright laws.  All rights are reserved.  Any 
// use in violation of the foregoing restrictions may subject the user to criminal 
// sanctions under applicable laws, as well as to civil liability for the breach 
// of the terms and conditions of this license.
// 
// THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD. 
//
//*****************************************************************************
#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)))
/* Include sys_config.h to get the CHIP_11* device identifier */
#include "sys_config.h"

// Code Red - if CMSIS is being used, then SystemInit() routine
// will be called by startup code rather than in application's main()
extern void SystemInit(void);

//*****************************************************************************
#if defined (__cplusplus)
extern "C" {
#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 SVC_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
//
//*****************************************************************************

#if defined(CHIP_LPC1343)
void WAKEUP_IRQHandler (void) ALIAS(IntDefaultHandler);
void I2C_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER16_0_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER16_1_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER32_0_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER32_1_IRQHandler (void) ALIAS(IntDefaultHandler);
void SSP0_IRQHandler (void) ALIAS(IntDefaultHandler);
void UART_IRQHandler (void) ALIAS(IntDefaultHandler);
void USB_IRQHandler (void) ALIAS(IntDefaultHandler);
void USB_FIQHandler (void) ALIAS(IntDefaultHandler);
void ADC_IRQHandler (void) ALIAS(IntDefaultHandler);
void WDT_IRQHandler (void) ALIAS(IntDefaultHandler);
void BOD_IRQHandler (void) ALIAS(IntDefaultHandler);
void FMC_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT3_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT2_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT1_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT0_IRQHandler (void) ALIAS(IntDefaultHandler);

#elif defined(CHIP_LPC1347)
void PIN_INT0_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT1_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT2_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT3_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT4_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT5_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT6_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIN_INT7_IRQHandler (void) ALIAS(IntDefaultHandler);
void GINT0_IRQHandler (void) ALIAS(IntDefaultHandler);
void GINT1_IRQHandler (void) ALIAS(IntDefaultHandler);
void RIT_IRQHandler (void) ALIAS(IntDefaultHandler);
void SSP1_IRQHandler (void) ALIAS(IntDefaultHandler);
void I2C_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER16_0_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER16_1_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER32_0_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER32_1_IRQHandler (void) ALIAS(IntDefaultHandler);
void SSP0_IRQHandler (void) ALIAS(IntDefaultHandler);
void UART_IRQHandler (void) ALIAS(IntDefaultHandler);
void USB_IRQHandler (void) ALIAS(IntDefaultHandler);
void USB_FIQHandler (void) ALIAS(IntDefaultHandler);
void ADC_IRQHandler (void) ALIAS(IntDefaultHandler);
void WDT_IRQHandler (void) ALIAS(IntDefaultHandler);
void BOD_IRQHandler (void) ALIAS(IntDefaultHandler);
void FMC_IRQHandler (void) ALIAS(IntDefaultHandler);
void OSCFAIL_IRQHandler (void) ALIAS(IntDefaultHandler);
void PVTCIRCUIT_IRQHandler (void) ALIAS(IntDefaultHandler);
void USBWakeup_IRQHandler  (void) ALIAS(IntDefaultHandler);

#else
#error No CHIP_134* device defined  
#endif

//*****************************************************************************
//
// The entry point for the application.
// __main() is the entry point for redlib based applications
// main() is the entry point for newlib based applications
//
//*****************************************************************************
//
// 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.  Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000.
//
//*****************************************************************************
extern void (* const g_pfnVectors[])(void);
__attribute__ ((section(".isr_vector")))
void (* const g_pfnVectors[])(void) = {
    &_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

#if defined(CHIP_LPC1343)
 WAKEUP_IRQHandler,        // Wakeup PIO0.0
 WAKEUP_IRQHandler,        // Wakeup PIO0.1
 WAKEUP_IRQHandler,        // Wakeup PIO0.2
 WAKEUP_IRQHandler,        // Wakeup PIO0.3
 WAKEUP_IRQHandler,        // Wakeup PIO0.4
 WAKEUP_IRQHandler,        // Wakeup PIO0.5
 WAKEUP_IRQHandler,        // Wakeup PIO0.6
 WAKEUP_IRQHandler,        // Wakeup PIO0.7
 WAKEUP_IRQHandler,        // Wakeup PIO0.8
 WAKEUP_IRQHandler,        // Wakeup PIO0.9
 WAKEUP_IRQHandler,        // Wakeup PIO0.10
 WAKEUP_IRQHandler,        // Wakeup PIO0.11
 WAKEUP_IRQHandler,        // Wakeup PIO1.0
 WAKEUP_IRQHandler,        // Wakeup PIO1.1
 WAKEUP_IRQHandler,        // Wakeup PIO1.2
 WAKEUP_IRQHandler,        // Wakeup PIO1.3
 WAKEUP_IRQHandler,        // Wakeup PIO1.4
 WAKEUP_IRQHandler,        // Wakeup PIO1.5
 WAKEUP_IRQHandler,        // Wakeup PIO1.6
 WAKEUP_IRQHandler,        // Wakeup PIO1.7
 WAKEUP_IRQHandler,        // Wakeup PIO1.8
 WAKEUP_IRQHandler,        // Wakeup PIO1.9
 WAKEUP_IRQHandler,        // Wakeup PIO1.10
 WAKEUP_IRQHandler,        // Wakeup PIO1.11
 WAKEUP_IRQHandler,        // Wakeup PIO2.0
 WAKEUP_IRQHandler,        // Wakeup PIO2.1
 WAKEUP_IRQHandler,        // Wakeup PIO2.2
 WAKEUP_IRQHandler,        // Wakeup PIO2.3
 WAKEUP_IRQHandler,        // Wakeup PIO2.4
 WAKEUP_IRQHandler,        // Wakeup PIO2.5
 WAKEUP_IRQHandler,        // Wakeup PIO2.6
 WAKEUP_IRQHandler,        // Wakeup PIO2.7
 WAKEUP_IRQHandler,        // Wakeup PIO2.8
 WAKEUP_IRQHandler,        // Wakeup PIO2.9
 WAKEUP_IRQHandler,        // Wakeup PIO2.10
 WAKEUP_IRQHandler,        // Wakeup PIO2.11
 WAKEUP_IRQHandler,        // Wakeup PIO3.0
 WAKEUP_IRQHandler,        // Wakeup PIO3.1
 WAKEUP_IRQHandler,        // Wakeup PIO3.2
 WAKEUP_IRQHandler,        // Wakeup PIO3.3
 I2C_IRQHandler,           // I2C
 TIMER16_0_IRQHandler,     // 16-bit Counter-Timer 0
 TIMER16_1_IRQHandler,     // 16-bit Counter-Timer 1
 TIMER32_0_IRQHandler,     // 32-bit Counter-Timer 0
 TIMER32_1_IRQHandler,     // 32-bit Counter-Timer 1
 SSP0_IRQHandler,          // SSP0
 UART_IRQHandler,          // UART
 USB_IRQHandler,           // USB IRQ
 USB_FIQHandler,           // USB FIQ
 ADC_IRQHandler,           // A/D Converter
 WDT_IRQHandler,           // Watchdog Timer
 BOD_IRQHandler,           // Brown Out Detect
 FMC_IRQHandler,           // IP2111 Flash Memory Controller
 PIOINT3_IRQHandler,       // PIO INT3
 PIOINT2_IRQHandler,       // PIO INT2
 PIOINT1_IRQHandler,       // PIO INT1
 PIOINT0_IRQHandler,       // PIO INT0

#elif defined(CHIP_LPC1347)
 PIN_INT0_IRQHandler,      // All GPIO pin can be routed to PIN_INTx
 PIN_INT1_IRQHandler,         
 PIN_INT2_IRQHandler,                      
 PIN_INT3_IRQHandler,                        
 PIN_INT4_IRQHandler,                       
 PIN_INT5_IRQHandler,
 PIN_INT6_IRQHandler,
 PIN_INT7_IRQHandler,
 GINT0_IRQHandler,                        
 GINT1_IRQHandler,         // PIO0 (0:7)              
 0,
 0,
 RIT_IRQHandler,      
 0,
 SSP1_IRQHandler,          // SSP1
 I2C_IRQHandler,           // I2C
 TIMER16_0_IRQHandler,     // 16-bit Counter-Timer 0
 TIMER16_1_IRQHandler,     // 16-bit Counter-Timer 1
 TIMER32_0_IRQHandler,     // 32-bit Counter-Timer 0
 TIMER32_1_IRQHandler,     // 32-bit Counter-Timer 1
 SSP0_IRQHandler,          // SSP0
 UART_IRQHandler,          // UART
 USB_IRQHandler,           // USB IRQ
 USB_FIQHandler,           // USB FIQ
 ADC_IRQHandler,           // A/D Converter
 WDT_IRQHandler,           // Watchdog Timer
 BOD_IRQHandler,           // Brown Out Detect
 FMC_IRQHandler,           // IP2111 Flash Memory Controller
 OSCFAIL_IRQHandler,       // OSC FAIL
 PVTCIRCUIT_IRQHandler,    // PVT CIRCUIT
 USBWakeup_IRQHandler,     // USB wake up
 0,

#else
#error No CHIP_13* device defined  
#endif
};

//*****************************************************************************
// 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;
}

#ifndef USE_OLD_STYLE_DATA_BSS_INIT
//*****************************************************************************
// 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;
#else
//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the load address, execution address and length of the RW data section and
// the execution and length of the BSS (zero initialized) section.
// Note that these symbols are not normally used by the managed linker script
// mechanism in Red Suite/LPCXpresso 3.6 (Windows) and LPCXpresso 3.8 (Linux).
// They are provide here simply so this startup code can be used with earlier
// versions of Red Suite which do not support the more advanced managed linker
// script mechanism introduced in the above version. To enable their use,
// define "USE_OLD_STYLE_DATA_BSS_INIT".
//*****************************************************************************
extern unsigned int _etext;
extern unsigned int _data;
extern unsigned int _edata;
extern unsigned int _bss;
extern unsigned int _ebss;
#endif


//*****************************************************************************
// 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) {

#ifndef USE_OLD_STYLE_DATA_BSS_INIT
    //
    // 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);
 }
#else
 // Use Old Style Data and BSS section initialization.
 // This will only initialize a single RAM bank.
 unsigned int * LoadAddr, *ExeAddr, *EndAddr, SectionLen;

    // Copy the data segment from flash to SRAM.
 LoadAddr = &_etext;
 ExeAddr = &_data;
 EndAddr = &_edata;
 SectionLen = (void*)EndAddr - (void*)ExeAddr;
 data_init((unsigned int)LoadAddr, (unsigned int)ExeAddr, SectionLen);
 // Zero fill the bss segment
 ExeAddr = &_bss;
 EndAddr = &_ebss;
 SectionLen = (void*)EndAddr - (void*)ExeAddr;
 bss_init ((unsigned int)ExeAddr, SectionLen);
#endif

 extern void SystemInit(void);
 SystemInit();

#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 SVC_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)
    {
    }
}