1.在main函数中加入启用读保护功能。
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2 I, ^% j* B. |2.读保护函数+ r& @% ]9 o- D3 I& y. S
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) u; @3 T5 s5 j1 p9 G; x- int main(void)5 d* p& |; y( x) M$ f# i
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- Flash_EnableReadProtection();
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/ H" V1 d* s1 T* A2 r% C& Q- void Flash_EnableReadProtection(void). t* g( C! U% {# c% Q
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- b* Y2 D% ~2 G, |! Q! D2 Q' F; L- FLASH_OBProgramInitTypeDef OBInit;
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- __HAL_FLASH_PREFETCH_BUFFER_DISABLE();# k/ d6 t0 y% b$ F$ h( U* P
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- HAL_FLASHEx_OBGetConfig(&OBInit);
* n% @4 v6 u5 B( S - if(OBInit.RDPLevel == OB_RDP_LEVEL_0)) U5 ]/ Y4 C+ s& h7 D" \
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# j! ~, @; E/ W! o3 C. ^3 V" Q0 D - OBInit.OptionType = OPTIONBYTE_RDP;
+ f( X9 L5 c v3 ~) f/ r7 Q - OBInit.RDPLevel = OB_RDP_LEVEL_1;
9 q X4 w% N8 P- N; L' n$ r: s - HAL_FLASH_Unlock();9 c6 Z8 q3 w2 h+ _
- HAL_FLASH_OB_Unlock();8 h4 o9 R3 Q% U" C+ F& h4 d& l5 k
- HAL_FLASHEx_OBProgram(&OBInit);- }* k8 |/ s: _# n( E! Z- Q9 P* f
- HAL_FLASH_OB_Lock();
2 K8 O6 ^' c5 W - HAL_FLASH_Lock();8 ~2 h, z1 @3 V: j8 m9 N0 y
- }
5 c( t1 ], A4 |' f7 |! d% G6 o2 e' q - __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
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( u( n/ W# W+ W3 s% T" ^* p* c- void Flash_DisableReadProtection(void)* {; ]& b8 |' g0 w/ F& Q7 ]
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" E) [3 e: r0 p1 Z$ f- FLASH_OBProgramInitTypeDef OBInit;' f* L% Q1 K" y8 _7 r9 G
: Q) u4 E: ]$ g/ L& j9 g- __HAL_FLASH_PREFETCH_BUFFER_DISABLE();4 G/ v& M! {* E* j
2 z9 v% h) P' V) q W/ R7 y- HAL_FLASHEx_OBGetConfig(&OBInit);' X/ w* C* u3 L Z
- if(OBInit.RDPLevel == OB_RDP_LEVEL_1)1 j# O% n& F& v' x* Y, P B
- {
. g/ m: j( W5 H8 X% G7 R - OBInit.OptionType = OPTIONBYTE_RDP;
% ]4 R7 X5 B( H9 K+ e, r8 I - OBInit.RDPLevel = OB_RDP_LEVEL_0;5 D0 s* O+ ?- i2 S
- HAL_FLASH_Unlock();7 V U+ y% R) q1 v- _' d
- HAL_FLASH_OB_Unlock();- W! j8 h8 h N: o" h' d3 ]1 w0 O
- HAL_FLASHEx_OBProgram(&OBInit);" M& z8 a Q! x4 K2 J. N5 J
- HAL_FLASH_OB_Lock();
) r6 P& J: z! a. o" C9 ?7 e - HAL_FLASH_Lock();; M9 T+ Q8 L1 [$ H: z3 G6 ^4 ?; t
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n+ |6 R Q; E9 X- }: C* A/ | - __HAL_FLASH_PREFETCH_BUFFER_ENABLE();* C' @6 E* U1 @, W- {
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