372 lines
15 KiB
C
372 lines
15 KiB
C
//*****************************************************************************
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// LPC175x_6x Microcontroller Startup code for use with LPCXpresso IDE
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//
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// Version : 140114
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//*****************************************************************************
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//
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// Copyright(C) NXP Semiconductors, 2014
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// All rights reserved.
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//
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// Software that is described herein is for illustrative purposes only
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// which provides customers with programming information regarding the
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// LPC products. This software is supplied "AS IS" without any warranties of
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// any kind, and NXP Semiconductors and its licensor disclaim any and
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// all warranties, express or implied, including all implied warranties of
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// merchantability, fitness for a particular purpose and non-infringement of
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// intellectual property rights. NXP Semiconductors assumes no responsibility
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// or liability for the use of the software, conveys no license or rights under any
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// patent, copyright, mask work right, or any other intellectual property rights in
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// or to any products. NXP Semiconductors reserves the right to make changes
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// in the software without notification. NXP Semiconductors also makes no
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// representation or warranty that such application will be suitable for the
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// specified use without further testing or modification.
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//
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// Permission to use, copy, modify, and distribute this software and its
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// documentation is hereby granted, under NXP Semiconductors' and its
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// licensor's relevant copyrights in the software, without fee, provided that it
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// is used in conjunction with NXP Semiconductors microcontrollers. This
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// copyright, permission, and disclaimer notice must appear in all copies of
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// this code.
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//*****************************************************************************
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#if defined (__cplusplus)
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#ifdef __REDLIB__
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#error Redlib does not support C++
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#else
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//*****************************************************************************
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//
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// The entry point for the C++ library startup
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//
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//*****************************************************************************
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extern "C" {
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extern void __libc_init_array(void);
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}
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#endif
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#endif
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#define WEAK __attribute__ ((weak))
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#define ALIAS(f) __attribute__ ((weak, alias (#f)))
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//*****************************************************************************
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#if defined (__cplusplus)
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extern "C" {
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#endif
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//*****************************************************************************
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#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
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// Declaration of external SystemInit function
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extern void SystemInit(void);
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#endif
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//*****************************************************************************
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//
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// Forward declaration of the default handlers. These are aliased.
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// When the application defines a handler (with the same name), this will
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// automatically take precedence over these weak definitions
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//
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//*****************************************************************************
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void ResetISR(void);
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WEAK void NMI_Handler(void);
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WEAK void HardFault_Handler(void);
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WEAK void MemManage_Handler(void);
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WEAK void BusFault_Handler(void);
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WEAK void UsageFault_Handler(void);
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WEAK void SVC_Handler(void);
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WEAK void DebugMon_Handler(void);
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WEAK void PendSV_Handler(void);
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WEAK void SysTick_Handler(void);
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WEAK void IntDefaultHandler(void);
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//*****************************************************************************
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//
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// Forward declaration of the specific IRQ handlers. These are aliased
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// to the IntDefaultHandler, which is a 'forever' loop. When the application
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// defines a handler (with the same name), this will automatically take
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// precedence over these weak definitions
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//
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//*****************************************************************************
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void WDT_IRQHandler(void) ALIAS(IntDefaultHandler);
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void TIMER0_IRQHandler(void) ALIAS(IntDefaultHandler);
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void TIMER1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void TIMER2_IRQHandler(void) ALIAS(IntDefaultHandler);
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void TIMER3_IRQHandler(void) ALIAS(IntDefaultHandler);
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void UART0_IRQHandler(void) ALIAS(IntDefaultHandler);
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void UART1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void UART2_IRQHandler(void) ALIAS(IntDefaultHandler);
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void UART3_IRQHandler(void) ALIAS(IntDefaultHandler);
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void PWM1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void I2C0_IRQHandler(void) ALIAS(IntDefaultHandler);
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void I2C1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void I2C2_IRQHandler(void) ALIAS(IntDefaultHandler);
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void SPI_IRQHandler(void) ALIAS(IntDefaultHandler);
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void SSP0_IRQHandler(void) ALIAS(IntDefaultHandler);
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void SSP1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void PLL0_IRQHandler(void) ALIAS(IntDefaultHandler);
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void RTC_IRQHandler(void) ALIAS(IntDefaultHandler);
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void EINT0_IRQHandler(void) ALIAS(IntDefaultHandler);
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void EINT1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void EINT2_IRQHandler(void) ALIAS(IntDefaultHandler);
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void EINT3_IRQHandler(void) ALIAS(IntDefaultHandler);
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void ADC_IRQHandler(void) ALIAS(IntDefaultHandler);
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void BOD_IRQHandler(void) ALIAS(IntDefaultHandler);
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void USB_IRQHandler(void) ALIAS(IntDefaultHandler);
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void CAN_IRQHandler(void) ALIAS(IntDefaultHandler);
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void DMA_IRQHandler(void) ALIAS(IntDefaultHandler);
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void I2S_IRQHandler(void) ALIAS(IntDefaultHandler);
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#if defined (__USE_LPCOPEN)
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void ETH_IRQHandler(void) ALIAS(IntDefaultHandler);
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#else
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void ENET_IRQHandler(void) ALIAS(IntDefaultHandler);
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#endif
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void RIT_IRQHandler(void) ALIAS(IntDefaultHandler);
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void MCPWM_IRQHandler(void) ALIAS(IntDefaultHandler);
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void QEI_IRQHandler(void) ALIAS(IntDefaultHandler);
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void PLL1_IRQHandler(void) ALIAS(IntDefaultHandler);
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void USBActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
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void CANActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
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//*****************************************************************************
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//
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// The entry point for the application.
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// __main() is the entry point for Redlib based applications
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// main() is the entry point for Newlib based applications
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//
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//*****************************************************************************
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#if defined (__REDLIB__)
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extern void __main(void);
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#endif
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extern int main(void);
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//*****************************************************************************
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//
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// External declaration for the pointer to the stack top from the Linker Script
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//
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//*****************************************************************************
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extern void _vStackTop(void);
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//*****************************************************************************
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#if defined (__cplusplus)
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} // extern "C"
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#endif
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//*****************************************************************************
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//
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// The vector table.
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// This relies on the linker script to place at correct location in memory.
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//
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//*****************************************************************************
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extern void (* const g_pfnVectors[])(void);
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__attribute__ ((section(".isr_vector"))) __attribute__ ((used))
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void (* const g_pfnVectors[])(void) = {
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// Core Level - CM3
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&_vStackTop, // The initial stack pointer
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ResetISR, // The reset handler
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NMI_Handler, // The NMI handler
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HardFault_Handler, // The hard fault handler
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MemManage_Handler, // The MPU fault handler
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BusFault_Handler, // The bus fault handler
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UsageFault_Handler, // The usage fault handler
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0, // Reserved
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0, // Reserved
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0, // Reserved
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0, // Reserved
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SVC_Handler, // SVCall handler
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DebugMon_Handler, // Debug monitor handler
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0, // Reserved
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PendSV_Handler, // The PendSV handler
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SysTick_Handler, // The SysTick handler
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// Chip Level - LPC17
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WDT_IRQHandler, // 16, 0x40 - WDT
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TIMER0_IRQHandler, // 17, 0x44 - TIMER0
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TIMER1_IRQHandler, // 18, 0x48 - TIMER1
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TIMER2_IRQHandler, // 19, 0x4c - TIMER2
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TIMER3_IRQHandler, // 20, 0x50 - TIMER3
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UART0_IRQHandler, // 21, 0x54 - UART0
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UART1_IRQHandler, // 22, 0x58 - UART1
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UART2_IRQHandler, // 23, 0x5c - UART2
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UART3_IRQHandler, // 24, 0x60 - UART3
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PWM1_IRQHandler, // 25, 0x64 - PWM1
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I2C0_IRQHandler, // 26, 0x68 - I2C0
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I2C1_IRQHandler, // 27, 0x6c - I2C1
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I2C2_IRQHandler, // 28, 0x70 - I2C2
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SPI_IRQHandler, // 29, 0x74 - SPI
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SSP0_IRQHandler, // 30, 0x78 - SSP0
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SSP1_IRQHandler, // 31, 0x7c - SSP1
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PLL0_IRQHandler, // 32, 0x80 - PLL0 (Main PLL)
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RTC_IRQHandler, // 33, 0x84 - RTC
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EINT0_IRQHandler, // 34, 0x88 - EINT0
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EINT1_IRQHandler, // 35, 0x8c - EINT1
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EINT2_IRQHandler, // 36, 0x90 - EINT2
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EINT3_IRQHandler, // 37, 0x94 - EINT3
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ADC_IRQHandler, // 38, 0x98 - ADC
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BOD_IRQHandler, // 39, 0x9c - BOD
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USB_IRQHandler, // 40, 0xA0 - USB
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CAN_IRQHandler, // 41, 0xa4 - CAN
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DMA_IRQHandler, // 42, 0xa8 - GP DMA
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I2S_IRQHandler, // 43, 0xac - I2S
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#if defined (__USE_LPCOPEN)
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ETH_IRQHandler, // 44, 0xb0 - Ethernet
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#else
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ENET_IRQHandler, // 44, 0xb0 - Ethernet
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#endif
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RIT_IRQHandler, // 45, 0xb4 - RITINT
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MCPWM_IRQHandler, // 46, 0xb8 - Motor Control PWM
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QEI_IRQHandler, // 47, 0xbc - Quadrature Encoder
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PLL1_IRQHandler, // 48, 0xc0 - PLL1 (USB PLL)
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USBActivity_IRQHandler, // 49, 0xc4 - USB Activity interrupt to wakeup
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CANActivity_IRQHandler, // 50, 0xc8 - CAN Activity interrupt to wakeup
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};
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//*****************************************************************************
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// Functions to carry out the initialization of RW and BSS data sections. These
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// are written as separate functions rather than being inlined within the
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// ResetISR() function in order to cope with MCUs with multiple banks of
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// memory.
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//*****************************************************************************
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__attribute__ ((section(".after_vectors")))
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void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
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unsigned int *pulDest = (unsigned int*) start;
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unsigned int *pulSrc = (unsigned int*) romstart;
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unsigned int loop;
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for (loop = 0; loop < len; loop = loop + 4)
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*pulDest++ = *pulSrc++;
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}
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__attribute__ ((section(".after_vectors")))
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void bss_init(unsigned int start, unsigned int len) {
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unsigned int *pulDest = (unsigned int*) start;
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unsigned int loop;
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for (loop = 0; loop < len; loop = loop + 4)
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*pulDest++ = 0;
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}
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//*****************************************************************************
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// The following symbols are constructs generated by the linker, indicating
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// the location of various points in the "Global Section Table". This table is
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// created by the linker via the Code Red managed linker script mechanism. It
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// contains the load address, execution address and length of each RW data
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// section and the execution and length of each BSS (zero initialized) section.
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//*****************************************************************************
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extern unsigned int __data_section_table;
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extern unsigned int __data_section_table_end;
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extern unsigned int __bss_section_table;
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extern unsigned int __bss_section_table_end;
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//*****************************************************************************
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// Reset entry point for your code.
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// Sets up a simple runtime environment and initializes the C/C++
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// library.
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//*****************************************************************************
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__attribute__ ((section(".after_vectors")))
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void
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ResetISR(void) {
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//
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// Copy the data sections from flash to SRAM.
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//
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unsigned int LoadAddr, ExeAddr, SectionLen;
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unsigned int *SectionTableAddr;
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// Load base address of Global Section Table
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SectionTableAddr = &__data_section_table;
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// Copy the data sections from flash to SRAM.
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while (SectionTableAddr < &__data_section_table_end) {
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LoadAddr = *SectionTableAddr++;
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ExeAddr = *SectionTableAddr++;
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SectionLen = *SectionTableAddr++;
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data_init(LoadAddr, ExeAddr, SectionLen);
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}
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// At this point, SectionTableAddr = &__bss_section_table;
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// Zero fill the bss segment
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while (SectionTableAddr < &__bss_section_table_end) {
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ExeAddr = *SectionTableAddr++;
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SectionLen = *SectionTableAddr++;
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bss_init(ExeAddr, SectionLen);
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}
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#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
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SystemInit();
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#endif
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#if defined (__cplusplus)
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//
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// Call C++ library initialisation
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//
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__libc_init_array();
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#endif
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#if defined (__REDLIB__)
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// Call the Redlib library, which in turn calls main()
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__main() ;
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#else
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main();
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#endif
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//
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// main() shouldn't return, but if it does, we'll just enter an infinite loop
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//
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while (1) {
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;
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}
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}
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//*****************************************************************************
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// Default exception handlers. Override the ones here by defining your own
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// handler routines in your application code.
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//*****************************************************************************
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__attribute__ ((section(".after_vectors")))
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void NMI_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void HardFault_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void MemManage_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void BusFault_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void UsageFault_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void SVC_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void DebugMon_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void PendSV_Handler(void)
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{ while(1) {}
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}
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__attribute__ ((section(".after_vectors")))
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void SysTick_Handler(void)
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{ while(1) {}
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}
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//*****************************************************************************
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//
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// Processor ends up here if an unexpected interrupt occurs or a specific
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// handler is not present in the application code.
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//
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//*****************************************************************************
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__attribute__ ((section(".after_vectors")))
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void IntDefaultHandler(void)
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{ while(1) {}
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}
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