一个很简单的例子读取电位器电压,然后调整占空比6 B, P% x* s, t' t9 b
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程序代码:
0 Z* T, [+ w# {0 Z4 R& a- #include "stm8s.h"
! q! G! d+ ^7 l0 u1 I/ J2 r - #include "stm8s_gpio.h"
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- #define PWM_F 640
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/ Q+ e. Q! w8 H! l, h. [3 I- uint8_t HexTable[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
7 c" U& q0 a8 o# _3 ? - uint16_t CCR1_Val = 100;$ `9 d" v s3 w+ M/ d
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- void DelayApi(uint16_t uwDelayCnt);
: o) e- I! Z2 R( ]" D) O7 b - void TIM2_Config(void);
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" A3 Q5 a, ^/ G: [0 b3 c0 {- void Init_UART1(void)" @/ M$ C8 B9 w6 P
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- UART1_DeInit();
) L2 B9 P# F+ Z" t - UART1_Init((u32)9600, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO, UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TX_ENABLE);
( }4 H" Z0 S! g4 C2 \ - // UART1_Cmd(ENABLE);7 _2 I0 N# k8 @* h$ q- l
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- void Send(uint8_t dat)
% [6 G6 Q2 c J. M- u* v* H* H - {
& q8 L0 A$ B( L - while(( UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET));
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- UART1_SendData8(dat);( z& N' Z' f2 f' G; s2 F
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- void Init_ADC(void)
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- //GPIO_Init(GPIOD, GPIO_PIN_2, GPIO_MODE_IN_FL_NO_IT);. ` L0 u: ~6 c: r) s& o3 F
- ADC1_DeInit();- o/ m3 a0 V1 s/ R( T
- ADC1_Init(ADC1_CONVERSIONMODE_SINGLE, ADC1_CHANNEL_3, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL3, ENABLE);
8 s* m4 G8 u% V$ v8 k - ADC1_Cmd(ENABLE);0 }6 F3 v2 w& e+ q- e8 S) b
- }
, \8 i5 }- b1 d& O - void UART1_sendhex(unsigned char dat)8 o" G' A3 H3 s2 r7 S2 ]8 ^) K
- {
. W/ b# }6 F9 T8 y, z - Send('0');% ^+ H# Y# _- ~/ J& _4 Y8 V# R$ L0 V
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- h! @% \3 Y% S" i1 [1 ?: ~ - Send('x');5 T+ `6 Y& @3 t }
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$ ?8 O* m3 X9 C- | - Send(HexTable[dat>>4]);
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- Send(HexTable[dat&0x0f]);
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/ L6 u: ]: }, M( x - Send(' ');
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- {4 w) @1 E) e8 n5 N7 h4 | - void UART1_sendstr(unsigned char *dat)" c6 |4 v: D4 }: B9 } j3 L
- {
# A4 o" [' b6 A$ E7 y - while(*dat!='\0')' a& C3 v+ c; k8 p
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/ a3 |7 x, S+ u4 V0 ~' [; u - Send(*dat);& Z+ L2 g. |) P$ A3 t
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- dat++;
8 G: ^9 p, I+ n/ K - //delay2us();, h7 r, ~3 p. |* F) a- }
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: o/ H7 n4 E5 @- e4 x, N+ i - void main(void)9 h5 T! s0 Y4 {0 n' t
- {
2 F* h5 i; q& R; B4 [" O/ b - //FlagStatus flag_status;
" O7 b! v, c3 S0 g+ C0 S! @6 f% \9 g - u16 u16_adc1_value;, L# g% c! I* e! q6 r2 s
- //Init_UART1();
( D# G& I! d# A8 Q6 X! Z1 G0 U1 V - Init_ADC();
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- CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);//16/1=16MHZ2 \' M' ^1 l9 A3 t# z
- GPIO_DeInit(GPIOD);
3 }3 Q- j) a5 ` - GPIO_Init(GPIOD,GPIO_PIN_2,GPIO_MODE_IN_PU_NO_IT);) A6 P& c c! j; b9 }' \
- //GPIO_DeInit(GPIOD);4 ^4 [, _6 M3 [! r$ s7 _
- GPIO_Init(GPIOD,GPIO_PIN_4,GPIO_MODE_OUT_PP_HIGH_SLOW);+ J" @- G* x# Q5 S: D* b
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" P% `0 _' F& u( I# R - TIM2_Config(); / ]% }% X% W5 @2 w% \2 b. o
- TIM2_SetCompare1(CCR1_Val);
4 }* P) n% t: p5 R- H7 v. s - /* Infinite loop *// P) G7 B* \+ a1 \% k& n" p
- while (1)2 r" Q! q4 T3 \9 Q: [2 u2 U) u3 E/ ]
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- //Send(0xf0);5 \% u, q& \- h0 O
- ADC1_StartConversion();
; U0 h/ I- i, z1 b+ A+ b0 D - //flag_status = ADC1_GetFlagStatus(ADC1_FLAG_EOC);& O8 Q9 `- f$ m7 C% v
- // while(flag_status == RESET); // SET or RESET
/ u, ~) m- W- B3 j - while(RESET == ADC1_GetFlagStatus(ADC1_FLAG_EOC));
, S, _/ ^) h$ w: r, b( A/ L - u16_adc1_value = ADC1_GetConversionValue();
/ ^0 u* L3 p8 g, x) T/ y - //CCR1_Val=u16_adc1_value*2/3-66;
8 m* O% f9 r! Q$ }. ^4 Y- Y( n - //CCR1_Val=101+u16_adc1_value*10/19;
8 X1 Q+ _3 p8 V2 w( @# C" P: B" o - /*if(u16_adc1_value<180)
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) h, s2 p' j$ S( @# Q( `* q& Y - CCR1_Val=70+u16_adc1_value*2;" X9 d7 F6 h+ h
- }else. s) S1 b5 S7 X- J7 w
- {
) P2 J# o9 T& @+ _# N0 a - CCR1_Val=460+(u16_adc1_value-180)*10/47;* T" q8 [( m1 i; \& C
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- if(u16_adc1_value<180)7 [+ i5 ]7 L w' D
- {
- R! s5 z9 `2 @; M* x7 q" V% } - if(u16_adc1_value<100){u16_adc1_value=100;}
( l+ p$ | w+ H7 a0 @ - CCR1_Val=u16_adc1_value+((u16_adc1_value-100)*36/10);
+ a4 [: r: D1 ^0 I" Y - }else
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- CCR1_Val=460+(u16_adc1_value-180)*10/47;
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. O4 E. Z) O2 V$ R6 e - if(CCR1_Val>30000)
: ^' b' ]0 f% Z5 |9 @4 |( ` - CCR1_Val=0;0 {. ~+ A0 m; Z$ T/ G
- if(CCR1_Val>PWM_F && CCR1_Val<2000)# y* ]" ]% K3 n) {
- CCR1_Val=PWM_F-2;
4 o* R6 W3 i8 |! t% H) B- Z4 z - TIM2_SetCompare1(CCR1_Val);0 M ?, e, w. O6 t6 C) S. J
- //UART1_sendhex((u16_adc1_value>>8));3 ]& S) O) V$ f6 X2 L
- //UART1_sendhex((u16_adc1_value&0xff));* ^! R+ K7 I9 q/ w# E
- //UART1_sendstr("\r\n");. D4 p( r% I X4 Q* r" ^ \+ U/ Z
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- //GPIO_WriteReverse(GPIOB,GPIO_PIN_5);! w$ n# W4 _4 Z
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- void TIM2_Config(void)
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- TIM2_TimeBaseInit(TIM2_PRESCALER_1, PWM_F);1 @/ H& t) n/ _1 o/ M! ?
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- TIM2_OC1Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR1_Val, TIM2_OCPOLARITY_HIGH);
( F1 i$ K$ m+ e( Y/ V L r: h - TIM2_OC1PreloadConfig(ENABLE);/ B: Q& L* F- I# N' v
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- // TIM2_OC2Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR2_Val, TIM2_OCPOLARITY_HIGH);( |+ |7 P7 z' E6 e5 f- N& X
- // TIM2_OC2PreloadConfig(ENABLE);
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- // TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR3_Val, TIM2_OCPOLARITY_HIGH);. M8 v/ h: _- i; ~- r, d
- // TIM2_OC3PreloadConfig(ENABLE);
" ?/ O1 c& @- \ - TIM2_ARRPreloadConfig(ENABLE);
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- TIM2_Cmd(ENABLE);* `" H8 N% b) m9 d3 a
- }
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- void DelayApi(uint16_t uwDelayCnt)
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- while(uwDelayCnt--);+ L7 g4 ~' y: q3 D* t
- }; ]/ [4 S0 C3 I1 A# i+ }
+ b+ S( x e7 L: T2 j- #ifdef USE_FULL_ASSERT
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- /**; Z+ r1 X5 x6 r# B# a. C
- * @brief Reports the name of the source file and the source line number; B+ r, a3 O# v9 l, U2 W
- * where the assert_param error has occurred.
2 s5 ? K( e- u, r - * @param file: pointer to the source file name
& e" q7 s* v+ `2 B; R/ Q4 y) T; t - * @param line: assert_param error line source number
+ S% d8 U& b+ p: K! n5 H' J* o - * @retval : None9 i: S4 k( e$ ^7 @+ n
- */
7 t! O+ f( T0 F5 g - void assert_failed(u8* file, u32 line)
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- /* User can add his own implementation to report the file name and line number,
+ R) @. B8 z$ p2 O- ] - ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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0 M! N. ~ v6 Y, Z/ Q( T/ r- /* Infinite loop */
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- {
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4 |3 m7 ]6 i0 D- V - #endif
复制代码 3 D+ e5 G+ a+ u& }
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程序文件打包下载(IAR 包含原理图大图)
8 s% y1 y7 k4 U" i% `链接:https://pan.baidu.com/s/1i5aShzn 密码:t8rc" U* b) M! @1 f$ F2 A+ R
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