1.在main函数中加入启用读保护功能。
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# B5 l* O' M& J' `3 e4 H" @2.读保护函数
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- int main(void)
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- Flash_EnableReadProtection();' C; ~2 J, S8 {2 `) E, p% } C; M
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) Z) {2 `* ~# M3 r2 k1 Y- void Flash_EnableReadProtection(void)% u( J- {9 _* m+ `( E
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- FLASH_OBProgramInitTypeDef OBInit;% a" C( G0 K! S- ]3 B
9 [9 _9 l, [, F' _: l- __HAL_FLASH_PREFETCH_BUFFER_DISABLE();" f( u- R* r/ f' S7 M2 q
3 ^& L* K1 W3 S0 v; I1 J- HAL_FLASHEx_OBGetConfig(&OBInit);
5 S1 }: f4 M! g) M, L! u$ a& z - if(OBInit.RDPLevel == OB_RDP_LEVEL_0)
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- OBInit.OptionType = OPTIONBYTE_RDP;
5 n- P0 {8 Q; G# M. Q - OBInit.RDPLevel = OB_RDP_LEVEL_1;1 w/ |1 Y+ o, U: b
- HAL_FLASH_Unlock();! q2 }. E. X) _( X8 y
- HAL_FLASH_OB_Unlock();* g( s! d2 B b% z& f) w. I
- HAL_FLASHEx_OBProgram(&OBInit);
/ t# J9 ~; O9 _5 T5 @$ ?6 \ b" @ - HAL_FLASH_OB_Lock();
0 G6 x( k" O5 r6 T+ c* y - HAL_FLASH_Lock();$ E1 n; p: }% B" @
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- __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
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* S4 X& a, Y; m$ C9 o- void Flash_DisableReadProtection(void): n1 }, t/ }* `/ O: Q: r
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- R. b" Q0 P r! j* U7 s- FLASH_OBProgramInitTypeDef OBInit;) \7 {' I! o: F% U+ L( q% v, S& B$ T* t& r
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- __HAL_FLASH_PREFETCH_BUFFER_DISABLE();% |( c4 ~% N* I; E# R, \
, V- ~6 v$ Y. g: i" m( L" I3 o" f, d- HAL_FLASHEx_OBGetConfig(&OBInit);6 E4 F8 H$ S# p. U2 n
- if(OBInit.RDPLevel == OB_RDP_LEVEL_1)
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" G+ t+ ?7 d& `. P; K, _& l* h - OBInit.OptionType = OPTIONBYTE_RDP;
B9 {- a4 ~2 z( ]0 g: O% n* ?# t" b - OBInit.RDPLevel = OB_RDP_LEVEL_0;
: m1 A' g$ z9 v$ h+ A5 Y% ~" f0 G - HAL_FLASH_Unlock();8 c* `$ d$ p. h2 r y
- HAL_FLASH_OB_Unlock();
5 c% I0 Q5 \% ?! b; L( v$ a - HAL_FLASHEx_OBProgram(&OBInit);
P% t. P3 z3 ~4 C* Z" Y - HAL_FLASH_OB_Lock();/ {8 }* |) P- Y4 L5 b
- HAL_FLASH_Lock();9 x( Z$ _) I- d k2 s# H- Y
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1 }4 V! n: z/ g. E/ x6 D5 X - __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
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复制代码
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