|
EDA365欢迎您!
您需要 登录 才可以下载或查看,没有帐号?注册
x
FLASH擦除程序:
: K$ \8 \! Y" J0 O9 f6 qUint16 ChipErase(void)( c+ F/ |5 w& t: ~3 I M c3 I
{
$ W6 V5 B$ s+ D3 |* n& PUint16 Data;
1 w; s, a+ m( q8 UUint32 TimeOut,i;
" `5 j9 y, \- m/***********以下过程需要严格遵守**************************/
" q( c4 C2 F' Z0 R6 u, C1 [" H( H*(FlashStart + 0x5555) = 0xAAAA; //需要对FLASH的0x5555单元写0xAAAA
& a( @+ P' U! g1 U4 g*(FlashStart + 0x2AAA) = 0x5555; //需要对FLASH的0x2AAA单元写0x55550 ?0 `* r, @3 y# A
*(FlashStart + 0x5555) = 0x8080; //随后对FLASH的0x5555单元写0x8080;/ K8 H1 G% m+ v, M; C, H. t7 H
*(FlashStart + 0x5555) = 0xAAAA; //乊后对FLASH的0x5555单元写0xAAAA3 O! d" M Q% |% R- _6 n$ l
*(FlashStart + 0x2AAA) = 0x5555; //需要对FLASH的0x2AAA单元写0x5555
* n5 ~8 S* y8 t7 [7 d+ x9 n*(FlashStart + 0x5555) = 0x1010; //需要对FLASH的0x5555单元写0x1010
" k; H5 c$ T& h4 b9 F& K- c8 pi = 0;
: m$ @7 R; _1 V; s2 I3 Z. _TimeOut = 0;
& G( N- ^ b3 m- T3 f) j; Z1 ]while(i<5)
" n F% r3 x. K. o! g2 G{
% n: I( Y- e2 m& q6 K# |Data = *(FlashStart + 0x3FFFF);
/ h# L) Y5 U9 {if (Data == 0xFFFF). r: p4 y8 k( p8 |
i++;
( Y6 a7 O3 V2 Z4 [' [7 ~else i=0;
* `& m% F$ P+ i# |( z1 k6 z5 s- d/ fif ( ++TimeOut>0x1000000)$ s0 H, o w u! e: |& O
return (TimeOutErr);. h$ B' F1 c1 I. X9 m( ?* P
}
% c8 _8 d9 F% {6 v: zfor (i=0;i<0x40000;i++)! j8 ^' k! H( c7 ]4 h8 v5 O
{1 B- t$ p6 K# X6 O7 I/ K6 D) @
Data = *(FlashStart + i);/ u- u. A# B. |: P! F6 V" O
if (Data !=0xFFFF) B& g* [' D4 N" G
return (EraseErr);" j/ h; |# U# P! o7 v
}$ `8 t5 a4 w# l8 j8 ?8 s$ ?* q, a0 O
return (EraseOK)
) j3 z# D+ ]6 \8 q- ?2 q为什么i<5,FlashStart + 0x3FFFF,++TimeOut>0x1000000 |
|