xushaoxiang
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/**
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* Initialize the system
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*
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* @param none
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* @return none
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*
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* @brief Setup the microcontroller system
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*
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*/
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/*-----------------------------------------------------------------------------------
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INCLUDE HEADE FILES
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------------------------------------------------------------------------------------*/
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#include <stdio.h>
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#include "xc6xxx.h"
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#include "xc_drv_gpio.h"
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/*------------------------------------------------------------------------------------
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Macros
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-------------------------------------------------------------------------------------*/
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#define __DEBUG_OUT_PORT 0
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/*------------------------------------------------------------------------------------
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Functions
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-------------------------------------------------------------------------------------*/
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#define VECTOR_NUM 48
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void set_vector(void)
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{
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#if (USE_XIP == 1)
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__disable_irq();
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for (uint32_t i = 0, *Pvector = (uint32_t *)(0x11001000 + 0),
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*_vector_table = (uint32_t *)(0x10000000);
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i < VECTOR_NUM; i++) // copy vertor table
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{
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_vector_table[i] = *Pvector++;
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}
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__enable_irq();
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//inter vertor table remap
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*((volatile unsigned int*)(0x4000013C)) =0x10000001;
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#endif
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}
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static void WDT_ResetInit(void)
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{
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cpr_ctlapbclken_grctl__wdt_pclk_en__setf(ENABLE);
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cpr_rstctl_ctlapb_sw__wdt_rstn__setf(RSTCTL_ENABLE);
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cpr_rstctl_ctlapb_sw__wdt_rstn__setf(RSTCTL_DISABLE);
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cpr_rstctl_wdtrst_mask_set(
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(WDT_SYS_RSTN_MASK_DISABLE | WDT_M0_RSTN_MASK_ENABLE));
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cpr_lp_ctl__ctl_wdt_tclk_en__setf(ENABLE);
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wdt_cr__wdt_en__setf(DISABLE);
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}
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void SystemInit(void)
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{
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WDT_ResetInit();
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#if (USE_XIP == 1)
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uint32_t *p=((unsigned int *)0x10000000);
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for(int i=0;i<1000;i++) {
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*(p++)=0;
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}
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set_vector();
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#endif
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}
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//__RAM_CODE int sendchar(int c)
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int sendchar(int c)
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{
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unsigned int status;
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#if (__DEBUG_OUT_PORT == 1)
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for (;;) {
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status = (*((volatile unsigned *)(0x40011000 + 0x14)));
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status &= 0x20;
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if (status == 0x20)
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break;
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}
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(*((volatile unsigned *)(0x40011000 + 0x00))) = c;
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return (1);
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#else
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for (;;) {
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status = (*((volatile unsigned *)(0x40010000 + 0x14)));
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status &= 0x20;
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if (status == 0x20)
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break;
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}
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(*((volatile unsigned *)(0x40010000 + 0x00))) = c;
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return (1);
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#endif
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}
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struct __FILE
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{
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int handle; /* Add whatever you need here */
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};
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FILE __stdout;
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__RAM_CODE int fputc(int ch, FILE *f) { return (sendchar(ch)); }
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int ferror(FILE *f)
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{
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/* Your implementation of ferror */
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return EOF;
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}
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void _ttywrch(int ch) { sendchar(ch); }
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void _sys_exit(int return_code)
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{
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label:
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goto label; /* endless loop */
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}
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