一个很简单的例子读取电位器电压,然后调整占空比
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1 L, o& S6 c6 T8 ~程序代码:5 s6 _, @' s- U0 N3 R. o! d
- #include "stm8s.h"
# B% A8 }. `% | ^2 p3 H - #include "stm8s_gpio.h"5 c) E! g4 F2 |) x: J. L
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- #define PWM_F 640
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- uint8_t HexTable[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};7 z+ g" I4 g( E1 c* v5 a0 m+ x
- uint16_t CCR1_Val = 100;
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- void DelayApi(uint16_t uwDelayCnt);) a# W9 L, W- C5 K' f5 p, q! h4 I& ?% d' V
- void TIM2_Config(void); g6 J% p) q9 I3 ]
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- void Init_UART1(void)
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- UART1_DeInit();
+ K6 U! T! v6 t& E' X% z/ @ - UART1_Init((u32)9600, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO, UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TX_ENABLE);
( z" {; w0 H: e% D - // UART1_Cmd(ENABLE);4 T% y# B ~. p" a. ?7 d
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- j8 s1 g! q, O4 \7 |4 C" b. a - void Send(uint8_t dat)& k5 C# q. e, c: V6 v! m% O
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- while(( UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET));7 I+ G& O" G) C
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$ W+ N, T9 o1 y& p - UART1_SendData8(dat);
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, I- G o( f: ]; F' s1 h3 \ - void Init_ADC(void)
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- //GPIO_Init(GPIOD, GPIO_PIN_2, GPIO_MODE_IN_FL_NO_IT);
4 l4 Z: }- J6 {' l7 T1 b t - ADC1_DeInit();# L; i% N1 \7 S) L
- ADC1_Init(ADC1_CONVERSIONMODE_SINGLE, ADC1_CHANNEL_3, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL3, ENABLE);' \. V% L0 d8 q0 Z
- ADC1_Cmd(ENABLE);& b) T% g% M4 W& ]. w! r
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- void UART1_sendhex(unsigned char dat)
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* J: o8 b& H( e7 n* }4 [9 r - Send('0');8 u. w) M0 r3 G
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- Send('x');; ]/ G3 z6 I' D( _8 E3 M. I
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& G2 P* s8 Z$ _ o, x; a5 q* l - Send(HexTable[dat>>4]);
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- Send(HexTable[dat&0x0f]);
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- Send(' ');
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/ a( z! S6 X. y6 i! m6 S1 O8 J - void UART1_sendstr(unsigned char *dat)$ z* W& [& W; _' j, |, p
- {
6 a+ Y$ H/ _; O7 w! @% w7 \ - while(*dat!='\0')% }6 e' U. D; T/ {
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- Send(*dat); k# y& y* n/ W! `3 Y8 G6 F
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6 H# e$ }# E5 C4 D _ - dat++;
" p3 C" h( P i' Y1 v - //delay2us();
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" |/ v& f( Q# E$ W, u2 C - void main(void)3 [* w( h7 p0 m
- {
& X: x" {' y6 W/ o - //FlagStatus flag_status;% T! r7 a8 x) S8 L9 Z# V" |& P% i5 y
- u16 u16_adc1_value;9 q3 T5 h: D! C# e X. b7 O
- //Init_UART1();+ u: Q3 w$ {/ a
- Init_ADC();
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3 o+ T. i6 U. k - CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);//16/1=16MHZ& N# I. i( Q+ f& ^
- GPIO_DeInit(GPIOD);* v& f8 j- B6 X/ }2 j; s5 ]
- GPIO_Init(GPIOD,GPIO_PIN_2,GPIO_MODE_IN_PU_NO_IT);, _" r7 D. L- a
- //GPIO_DeInit(GPIOD);
" j4 F* H# p5 H# c( p& z - GPIO_Init(GPIOD,GPIO_PIN_4,GPIO_MODE_OUT_PP_HIGH_SLOW);1 P6 L. ?) `& I! G) D
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4 O4 k; |- W! ?) C" F - TIM2_Config();
# P4 ?1 `3 v- R$ E) E2 J - TIM2_SetCompare1(CCR1_Val);1 s+ t6 `& I% O1 Z
- /* Infinite loop */5 M) r$ C+ Z8 A( p3 l) p* S; |! N4 y
- while (1)
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" @# V3 k9 |' G; M# g( a - //Send(0xf0); N4 T% v0 S' n; D
- ADC1_StartConversion();
i% G" R5 K/ @6 H4 t. [! X: { - //flag_status = ADC1_GetFlagStatus(ADC1_FLAG_EOC);9 m5 a6 ^+ K1 a9 k* J1 N
- // while(flag_status == RESET); // SET or RESET. {4 U( X& ~- ?4 R: K
- while(RESET == ADC1_GetFlagStatus(ADC1_FLAG_EOC)); 3 s7 M; V$ Z2 A
- u16_adc1_value = ADC1_GetConversionValue();
$ K1 \( \1 Z& }; m5 Y" i - //CCR1_Val=u16_adc1_value*2/3-66;
. U7 w5 ^! S$ o# A9 @ - //CCR1_Val=101+u16_adc1_value*10/19;
+ J. g7 B: K/ R5 X! a7 t - /*if(u16_adc1_value<180)3 V9 }8 f6 p0 H* ~8 z" k
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- CCR1_Val=70+u16_adc1_value*2;( [8 L5 }3 v" }; y$ k
- }else
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- CCR1_Val=460+(u16_adc1_value-180)*10/47;
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8 o( F3 N- u0 m3 r1 [ - */
/ M3 b/ {; t9 ~& |# W* V - if(u16_adc1_value<180)+ r, I' k! J q: |: X! |$ o: q$ c+ I& [
- {
6 c) S5 Q! `9 B0 T8 t - if(u16_adc1_value<100){u16_adc1_value=100;}
8 W* o6 q% _% }1 n% R8 B" g! u - CCR1_Val=u16_adc1_value+((u16_adc1_value-100)*36/10);/ ], p4 R/ @* w: k. @5 L
- }else! c( q5 _: }& }" k7 \
- {
- Y; K5 x* b8 a) Q - CCR1_Val=460+(u16_adc1_value-180)*10/47;
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- if(CCR1_Val>30000)# a5 d& @# G( }5 S( x) _
- CCR1_Val=0;* ~' _1 F+ u2 Z- p
- if(CCR1_Val>PWM_F && CCR1_Val<2000)) k( A3 \6 |/ o6 l$ j' M
- CCR1_Val=PWM_F-2;
- p1 g* t1 J0 x( T - TIM2_SetCompare1(CCR1_Val);
/ }+ D1 p- G" b# p - //UART1_sendhex((u16_adc1_value>>8));
9 H: o4 t1 \; `+ _6 \ - //UART1_sendhex((u16_adc1_value&0xff));
+ x$ u/ ?. x& v! @- ^9 Z - //UART1_sendstr("\r\n");, N: O0 c# w' r: f
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& w( P q" s* P3 q. r - //GPIO_WriteReverse(GPIOB,GPIO_PIN_5);
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) r8 t; L+ m/ z4 } i- void TIM2_Config(void)
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- TIM2_TimeBaseInit(TIM2_PRESCALER_1, PWM_F);1 h8 G( u& G) v0 K
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- TIM2_OC1Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR1_Val, TIM2_OCPOLARITY_HIGH);0 ~! ^5 H' p4 Q# f0 j
- TIM2_OC1PreloadConfig(ENABLE);. ^8 P: t$ t- f; I
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: ^2 p; i+ B! l0 T) ?' x - // TIM2_OC2Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR2_Val, TIM2_OCPOLARITY_HIGH);5 ?: L) b9 d E! f) r! n+ _/ j
- // TIM2_OC2PreloadConfig(ENABLE);/ u4 p; y P- B
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- // TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR3_Val, TIM2_OCPOLARITY_HIGH);
8 x; S9 g9 ^9 x- s6 h: n- m" @ - // TIM2_OC3PreloadConfig(ENABLE);$ N4 u- E! v& x) U! _, X
- TIM2_ARRPreloadConfig(ENABLE);
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5 N; M2 F5 X; P+ b! c1 i( ^6 i1 |. D - TIM2_Cmd(ENABLE);. C. H" g0 z9 v& Q# O8 f3 d1 n
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- void DelayApi(uint16_t uwDelayCnt)0 J& e* z. [: @9 d
- {
: f* w E) u- w" M; e - while(uwDelayCnt--);# x/ q* D- b/ a- R: q0 z
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" J7 Q" \! x4 J* `1 u3 I' ^- #ifdef USE_FULL_ASSERT
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- /**
; y. a: z' X/ V2 ?& R - * @brief Reports the name of the source file and the source line number
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]: `( c9 b8 Q, U - * @param file: pointer to the source file name2 g/ R/ ^7 ?) E* O
- * @param line: assert_param error line source number& y* R" c. H! C
- * @retval : None* }: |! [( y! [8 o- C
- */; m8 ?. S0 ?$ k2 `4 c
- void assert_failed(u8* file, u32 line)( G ~: g- o8 z
- {
; q: p1 `0 _$ A4 Q2 e# ? - /* User can add his own implementation to report the file name and line number,
& g/ r& |( [# | - ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */8 H; a, L5 l$ j& O! r2 ~
" J J8 f# n9 F, Z) ], J: i- /* Infinite loop */
9 L H, z3 l+ N - while (1)
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- }
/ v" S$ Z5 A) O; f9 R: H - #endif
复制代码 $ ^) f7 ^' l- S4 I6 H
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程序文件打包下载(IAR 包含原理图大图)
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