/******************************************************************************
FILE : datapage.c
PURPOSE : paged data access runtime routines
MACHINE : Freescale 68HC12 (Target)
LANGUAGE : ANSI-C
HISTORY : 21.7.96 first version created
******************************************************************************/
#include "hidef.h"
#include "non_bank.sgm"
#include "runtime.sgm"
/*lint --e{957} , MISRA 8.1 REQ, these are runtime support functions and, as such, are not meant to be called in user code; they are only invoked via jumps, in compiler-generated code */
/*lint -estring(553, __OPTION_ACTIVE__) , MISRA 19.11 REQ , __OPTION_ACTIVE__ is a built-in compiler construct to check for active compiler options */
#ifndef __HCS12X__ /* it's different for the HCS12X. See the text below at the #else // __HCS12X__ */
/*
According to the -Cp option of the compiler the
__DPAGE__, __PPAGE__ and __EPAGE__ macros are defined.
If none of them is given as argument, then no page accesses should occur and
this runtime routine should not be used !
To be on the save side, the runtime routines are created anyway.
*/
/* Compile with option -DHCS12 to activate this code */
#if defined(HCS12) || defined(_HCS12) || defined(__HCS12__)
#ifndef PPAGE_ADDR
#ifdef __PPAGE_ADR__
#define PPAGE_ADDR __PPAGE_ADR__
#else
#define PPAGE_ADDR (0x30 + REGISTER_BASE)
#endif
#endif
#ifndef __PPAGE__ /* may be set already by option -CPPPAGE */
#define __PPAGE__
#endif
/* Compile with option -DDG128 to activate this code */
#elif defined DG128 /* HC912DG128 derivative has PPAGE register only at 0xFF */
#ifndef PPAGE_ADDR
#define PPAGE_ADDR (0xFF+REGISTER_BASE)
#endif
#ifndef __PPAGE__ /* may be set already by option -CPPPAGE */
#define __PPAGE__
#endif
#elif defined(HC812A4)
/* all setting default to A4 already */
#endif
#if !defined(__EPAGE__) && !defined(__PPAGE__) && !defined(__DPAGE__)
/* as default use all page registers */
#define __DPAGE__
#define __EPAGE__
#define __PPAGE__
#endif
/* modify the following defines to your memory configuration */
#define EPAGE_LOW_BOUND 0x400u
#define EPAGE_HIGH_BOUND 0x7ffu
#define DPAGE_LOW_BOUND 0x7000u
#define DPAGE_HIGH_BOUND 0x7fffu
#define PPAGE_LOW_BOUND (DPAGE_HIGH_BOUND+1u)
#define PPAGE_HIGH_BOUND 0xBFFFu
#ifndef REGISTER_BASE
#define REGISTER_BASE 0x0u
#endif
#ifndef DPAGE_ADDR
#define DPAGE_ADDR (0x34u+REGISTER_BASE)
#endif
#ifndef EPAGE_ADDR
#define EPAGE_ADDR (0x36u+REGISTER_BASE)
#endif
#ifndef PPAGE_ADDR
#define PPAGE_ADDR (0x35u+REGISTER_BASE)
#endif
/*
The following parts about the defines are assumed in the code of _GET_PAGE_REG :
- the memory region controlled by DPAGE is above the area controlled by the EPAGE and
below the area controlled by the PPAGE.
- the lower bound of the PPAGE area is equal to be the higher bound of the DPAGE area + 1
*/
#if (EPAGE_LOW_BOUND >= EPAGE_HIGH_BOUND) || (EPAGE_HIGH_BOUND >= DPAGE_LOW_BOUND) || (DPAGE_LOW_BOUND >= DPAGE_HIGH_BOUND) || (DPAGE_HIGH_BOUND >= PPAGE_LOW_BOUND) || (PPAGE_LOW_BOUND >= PPAGE_HIGH_BOUND)
#error /* please adapt _GET_PAGE_REG for this non default page configuration */
#endif
#if (DPAGE_HIGH_BOUND+1u) != PPAGE_LOW_BOUND
#error /* please adapt _GET_PAGE_REG for this non default page configuration */
#endif
/* this module does either control if any access is in the bounds of the specified page or */
/* ,if only one page is specified, just use this page. */
/* This behavior is controlled by the define USE_SEVERAL_PAGES. */
/* If !USE_SEVERAL_PAGES does increase the performance significantly */
/* NOTE : When !USE_SEVERAL_PAGES, the page is also set for accesses outside of the area controlled */
/* by this single page. But this is should not cause problems because the page is restored to the old value before any other access could occur */
#if !defined(__DPAGE__) && !defined(__EPAGE__) && !defined(__PPAGE__)
/* no page at all is specified */
/* only specifying the right pages will speed up these functions a lot */
#define USE_SEVERAL_PAGES 1
#elif (defined(__DPAGE__) && defined(__EPAGE__)) || (defined(__DPAGE__) && defined(__PPAGE__)) || (defined(__EPAGE__) && defined(__PPAGE__))
/* more than one page register is used */
#define USE_SEVERAL_PAGES 1
#else
#define USE_SEVERAL_PAGES 0
#if defined(__DPAGE__) /* check which pages are used */
#define PAGE_ADDR PPAGE_ADDR
#elif defined(__EPAGE__)
#define PAGE_ADDR EPAGE_ADDR
#elif defined(__PPAGE__)
#define PAGE_ADDR PPAGE_ADDR
#else /* we do not know which page, decide it at runtime */
#error /* must not happen */
#endif
#endif
#if USE_SEVERAL_PAGES /* only needed for several pages support */
/*--------------------------- _GET_PAGE_REG --------------------------------
Runtime routine to detect the right register depending on the 16 bit offset part
of an address.
This function is only used by the functions below.
Depending on the compiler options -Cp different versions of _GET_PAGE_REG are produced.
Arguments :
- Y : offset part of an address
Result :
if address Y is controlled by a page register :
- X : address of page register if Y is controlled by an page register
- Zero flag cleared
- all other registers remain unchanged
if address Y is not controlled by a page register :
- Zero flag is set
- all registers remain unchanged
--------------------------- _GET_PAGE_REG ----------------------------------*/
#if defined(__DPAGE__)
#ifdef __cplusplus
extern "C"
#endif
#pragma NO_ENTRY
#pragma NO_EXIT
#pragma NO_FRAME
static void NEAR _GET_PAGE_REG(void) { /*lint -esym(528, _GET_PAGE_REG) used in asm code */
asm {
L_DPAGE:
CPY #DPAGE_LOW_BOUND ;/* test of lower bound of DPAGE */
#if defined(__EPAGE__)
BLO L_EPAGE ;/* EPAGE accesses are possible */
#else
BLO L_NOPAGE ;/* no paged memory below accesses */
#endif
CPY #DPAGE_HIGH_BOUND ;/* test of higher bound DPAGE/lower bound PPAGE */
#if defined(__PPAGE__)
BHI L_PPAGE ;/* EPAGE accesses are possible */
#else
BHI L_NOPAGE ;/* no paged memory above accesses */
#endif
FOUND_DPAGE:
LDX #DPAGE_ADDR ;/* load page register address and clear zero flag */
RTS
#if defined(__PPAGE__)
L_PPAGE:
CPY #PPAGE_HIGH_BOUND ;/* test of higher bound of PPAGE */
BHI L_NOPAGE
FOUND_PPAGE:
LDX #PPAGE_ADDR ;/* load page register address and clear zero flag */
RTS
#endif
#if defined(__EPAGE__)
L_EPAGE:
CPY #EPAGE_LOW_BOUND ;/* test of lower bound of EPAGE */
BLO L_NOPAGE
CPY #EPAGE_HIGH_BOUND ;/* test of higher bound of EPAGE */
BHI L_NOPAGE
FOUND_EPAGE:
LDX #EPAGE_ADDR ;/* load page register address and clear zero flag */
RTS
#endif
L_NOPAGE:
ORCC #0x04 ;/* sets zero flag */
RTS
}
}
#else /* !defined(__DPAGE__) */
#if defined( __PPAGE__ )
#ifdef __cplusplus
extern "C"
#endif
#pragma NO_ENTRY
#pragma NO_EXIT
#pragma NO_FRAME
static void NEAR _GET_PAGE_REG(void) { /*lint -esym(528, _GET_PAGE_REG) used in asm code */
asm {
L_PPAGE:
CPY #PPAGE_LOW_BOUND ;/* test of lower bound of PPAGE */
#if defined( __EPAGE__ )
BLO L_EPAGE
#else
BLO L_NOPAGE ;/* no paged memory below */
#endif
CPY #PPAGE_HIGH_BOUND ;/* test of higher bound PPAGE */
BHI L_NOPAGE
FOUND_PPAGE:
LDX #PPAGE_ADDR ;/* load page register address and clear zero flag */
RTS
#if defined( __EPAGE__ )
L_EPAGE:
CPY #EPAGE_LOW_BOUND ;/* test of lower bound of EPAGE */
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MC9S12_Flash及模拟EEPROM.7z (57个子文件)
Flash_以这个工程为主
Sources
AbstractDrivers
EmulationEEPROM
EmulationEEPROM.h 310B
EmulationEEPROM.c 2KB
Typedefs.h 3KB
datapage.c 68KB
derivative.h 264B
Start12.c 23KB
McuDrivers
CAN
CAN.c 23KB
CAN.h 1KB
XGATE
xgate.cxgate 7KB
xgate.h 460B
xgate_init.c 2KB
xgate_init.h 207B
ISR
isr.c 9KB
PIT
pit.c 2KB
pit_isr.h 153B
pit.h 254B
pit_isr.cxgate 2KB
SYSTEM
System.c 4KB
System.h 170B
SPI
spi.h 2KB
spi.c 4KB
Flash
flash.c 23KB
flash.h 1KB
GPIO
gpio.h 702B
gpio.c 8KB
main.c 2KB
C_EEPROM_Layout.hwl 1KB
prm
burner.bbl 10KB
Project.prm 14KB
Flash_Data
CWSettingsWindows.stg 4KB
Standard
TargetDataWindows.tdt 1.93MB
ObjectCode
datapage.c.o 14KB
main.c.o 8KB
CAN.c.o 28KB
Start12.c.o 6KB
EmulationEEPROM.c.o 7KB
gpio.c.o 22KB
System.c.o 8KB
flash.c.o 24KB
MC9S12XEP100.c.o 406KB
C_Layout.hwl 855B
Flash操作的汇编指令.png 8KB
Default.mem 161B
P&E_Multilink_USB.ini 3KB
cmd
P&E_Multilink_USB_Postload.cmd 59B
P&E_Multilink_USB_Preload.cmd 60B
P&E_Multilink_USB_Vppon.cmd 78B
P&E_Multilink_USB_Vppoff.cmd 77B
P&E_Multilink_USB_Startup.cmd 59B
P&E_Multilink_USB_Erase_unsecure_hcs12xe.cmd 1KB
P&E_Multilink_USB_Reset.cmd 60B
bin
Project.abs 433KB
Project.map 242KB
Project.abs.glo 6KB
Project.abs.s19 6KB
Project.xpr 256B
Flash.mcp 66KB
共 57 条
- 1
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