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请教一下：我需要实现：按下Key时，p0.6输入为0，输出enableP2.4=0,但实验室，按键输入没反映。为什么？？谢谢！! [/ m. E6 ?$ z) \ f
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#define enable (1<<4) //p2.4 is enable motor.0X00000010
+ g/ m: p! \* N" s#define key (1<<6) //p0.6 is connect key
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int main (void) {4 P) `( ]. J5 E5 `% K$ p5 _* m; B7 R. d
# K7 t3 H7 n% h- [; Y int i;' \+ K% I% ~* E u$ Y
0 _3 X4 J& e+ O+ G5 z8 T! L PINSEL4 |=0x00000010; //set GPIO P2.4,(p2.2is PWM function)9 X: I* Z! M7 C) e
PINSEL0 |=0X00000000; //SET GPIO P0.68 Z' I- v" ^. N8 Q# t! Z# X7 T; n8 S
l D6 m1 x# C8 R0 { FIO2DIR |=0x00000010; //pin p2.4 is an output
- Q9 l6 e5 ^: x. ^7 \4 W( G FIO0DIR =0; //PIN P0.6 IS INPUT
/ I1 c" l! Q# I/ w' g! w if ((FIO0PIN & key)==0) FIO2CLR=enable; //set p2.4=0,motor stop,(when press key,p0.6=0)8 ~/ I8 `% ^4 {0 U
else FIO2SET=enable; //set p2.4=1(when release key,p0.6=1)' H- M# ]+ {+ y4 R
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pwm_init(); //initialize pwm/ B' Y0 a5 z; n, r* S" g
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2 f$ D$ H' o# P: z PINSEL4 |= 0x10; //PWM outputs its signal at GPIO Port 2.2! _# a) g& e' p k/ A# b
pwm_setup(3, PWM_SINGLE);1 [5 {) C2 o$ L
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pwm_write(3,50);
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}
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发表于 2020-8-14 10:28
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淘帖
支持！
反对！