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FLASH擦除程序:
9 p2 p# o( f6 _% aUint16 ChipErase(void)
+ i0 E$ n6 @" S* d0 M) a' r{6 h+ f6 }6 H8 @( J$ K
Uint16 Data;' I. C; e4 k2 j8 |/ Q
Uint32 TimeOut,i;& _) F8 k& O# P r- g2 ~
/***********以下过程需要严格遵守**************************/1 o& H- s/ M8 m0 Z
*(FlashStart + 0x5555) = 0xAAAA; //需要对FLASH的0x5555单元写0xAAAA1 o8 U( q1 K+ e- R
*(FlashStart + 0x2AAA) = 0x5555; //需要对FLASH的0x2AAA单元写0x5555
! i. _% I' e" @; T6 Z' G6 G9 q3 ~*(FlashStart + 0x5555) = 0x8080; //随后对FLASH的0x5555单元写0x8080;
2 p# n; M9 J0 \; m) l1 }9 }*(FlashStart + 0x5555) = 0xAAAA; //乊后对FLASH的0x5555单元写0xAAAA
5 S% @7 T! {% x*(FlashStart + 0x2AAA) = 0x5555; //需要对FLASH的0x2AAA单元写0x5555
9 [$ p+ I% S4 e8 H1 V- J*(FlashStart + 0x5555) = 0x1010; //需要对FLASH的0x5555单元写0x1010
0 ~/ z; z9 p7 E; p" g! `; P( Di = 0;8 `7 Z5 b, M, `7 J7 \+ Y0 @
TimeOut = 0;
5 a. l. N# g$ q# C" e( Bwhile(i<5)
' C# ^: F3 d! v9 S! Q6 z{
0 X; b* X: u+ w; B$ ^3 xData = *(FlashStart + 0x3FFFF);
, ]' q: F9 r' W- F% bif (Data == 0xFFFF)& A* y- h' H* } k5 Q$ }! M
i++;
9 U5 A6 M' x" C% s5 i; _8 @2 Ielse i=0;
% ]% ~( P0 F1 z2 }if ( ++TimeOut>0x1000000)
& C5 k- D' L4 preturn (TimeOutErr); b/ D" ], `" Q; d# B7 b
}
! M' i/ N* j2 l; A2 Ofor (i=0;i<0x40000;i++)
, s% C0 l6 x; R% k. e5 x" _{
: G: Y* l& w. hData = *(FlashStart + i);- ?: ~# ?1 V% l
if (Data !=0xFFFF); F- R# a3 S% C; C$ A* a' a
return (EraseErr);' v" T# q& S4 ?7 S+ J# I3 e B
} E( H* l( a' _6 v; P. ~
return (EraseOK)1 C6 y+ \; w( Y: U- k7 _
为什么i<5,FlashStart + 0x3FFFF,++TimeOut>0x1000000 |
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