此时我没有max7219芯片所以我试图用我的覆盆子控制一个8x8点阵显示器，没有它，所以我找到了这个代码，但它给了我第75行的IndentationError，我＆＃39;我在python的漂亮菜鸟，我该怎么解决这个问题？ 谢谢你的帮助。
我应该删除所有评论吗？
#working
import RPi.GPIO as IO #calling for header file which helps in using GPIO’s of PI
import time #calling for time to provide delays in program
IO.setwarnings(False) #do not show any warnings
x=1
y=1
IO.setmode (IO.BCM) #programming the GPIO by BCM pin numbers. (like PIN29 as'GPIO5')
IO.setup(12,IO.OUT) #initialize GPIO12 as an output.
IO.setup(22,IO.OUT) #initialize GPIO22 as an output.
IO.setup(27,IO.OUT)
IO.setup(25,IO.OUT)
IO.setup(17,IO.OUT)
IO.setup(24,IO.OUT)
IO.setup(23,IO.OUT)
IO.setup(18,IO.OUT)
IO.setup(21,IO.OUT)
IO.setup(20,IO.OUT)
IO.setup(26,IO.OUT)
IO.setup(16,IO.OUT)
IO.setup(19,IO.OUT)
IO.setup(13,IO.OUT)
IO.setup(6,IO.OUT)
IO.setup(5,IO.OUT)
PORTVALUE = [128,64,32,16,8,4,2,1]
#value of pin in each port
A=[0,0b01111111,0b11111111,0b11001100,0b11001100,0b11001100,0b11111111,0b01111111]
B =[0,0b00111100,0b01111110,0b11011011,0b11011011,0b11011011,0b11111111,0b11111111]
C= [0,0b11000011,0b11000011,0b11000011,0b11000011,0b11100111,0b01111110,0b00111100]
D=[0,0b01111110,0b10111101,0b11000011,0b11000011,0b11000011,0b11111111,0b11111111]
E=[0,0b11011011,0b11011011,0b11011011,0b11011011,0b11011011,0b11111111,0b11111111]
F=[0,0b11011000,0b11011000,0b11011000,0b11011000,0b11011000,0b11111111,0b11111111]
G=[0b00011111,0b11011111,0b11011000,0b11011011,0b11011011,0b11011011,0b11111111,0b11111111]
H=[0,0b11111111,0b11111111,0b00011000,0b00011000,0b00011000,0b11111111,0b11111111]
I=[0b11000011,0b11000011,0b11000011,0b11111111,0b11111111,0b11000011,0b11000011,0b11000011]
J=[0b11000000,0b11000000,0b11000000,0b11111111,0b11111111,0b11000011,0b11001111,0b11001111]
K=[0,0b11000011,0b11100111,0b01111110,0b00111100,0b00011000,0b11111111,0b11111111]
L=[0b00000011,0b00000011,0b00000011,0b00000011,0b00000011,0b00000011,0b11111111,0b11111111]
M=[0b11111111,0b11111111,0b01100000,0b01110000,0b01110000,0b01100000,0b11111111,0b11111111]
N=[0b11111111,0b11111111,0b00011100,0b00111000,0b01110000,0b11100000,0b11111111,0b11111111]
O=[0b01111110,0b11111111,0b11000011,0b11000011,0b11000011,0b11000011,0b11111111,0b01111110]
P=[0,0b01110000,0b11111000,0b11001100,0b11001100,0b11001100,0b11111111,0b11111111]
Q=[0b01111110,0b11111111,0b11001111,0b11011111,0b11011011,0b11000011,0b11111111,0b01111110]
R=[0b01111001,0b11111011,0b11011111,0b11011110,0b11011100,0b11011000,0b11111111,0b11111111]
S=[0b11001110,0b11011111,0b11011011,0b11011011,0b11011011,0b11011011,0b11111011,0b01110011]
T=[0b11000000,0b11000000,0b11000000,0b11111111,0b11111111,0b11000000,0b11000000,0b11000000]
U=[0b11111110,0b11111111,0b00000011,0b00000011,0b00000011,0b00000011,0b11111111,0b11111110]
V=[0b11100000,0b11111100,0b00011110,0b00000011,0b00000011,0b00011110,0b11111100,0b11100000]
W=[0b11111110,0b11111111,0b00000011,0b11111111,0b11111111,0b00000011,0b11111111,0b11111110]
X=[0b01000010,0b11100111,0b01111110,0b00111100,0b00111100,0b01111110,0b11100111,0b01000010]
Y=[0b01000000,0b11100000,0b01110000,0b00111111,0b00111111,0b01110000,0b11100000,0b01000000]
Z=[0b11000011,0b11100011,0b11110011,0b11111011,0b11011111,0b11001111,0b11000111,0b11000011]
def PORT(pin): #assigning GPIO state by taking 'pin' value
if(pin&0x01 == 0x01):
IO.output(21,0) #if bit0 of 8bit 'pin' is true pull PIN21 low
else:
IO.output(21,1) #if bit0 of 8bit 'pin' is false pull PIN21 high
if(pin&0x02 == 0x02):
IO.output(20,0) #if bit1 of 8bit 'pin' is true pull PIN20 low
else:
IO.output(20,1) #if bit1 of 8bit 'pin' is false pull PIN20 high
if(pin&0x04 == 0x04):
IO.output(26,0) #if bit2 of 8bit 'pin' is true pull PIN26 low
else:
IO.output(26,1) #if bit2 of 8bit 'pin' is false pull PIN26 high
if(pin&0x08 == 0x08):
IO.output(16,0)
else:
IO.output(16,1)
if(pin&0x10 == 0x10):
IO.output(19,0)
else:
IO.output(19,1)
if(pin&0x20 == 0x20):
IO.output(13,0)
else:
IO.output(13,1)
if(pin&0x40 == 0x40):
IO.output(6,0)
else:
IO.output(6,1)
if(pin&0x80 == 0x80):
IO.output(5,0)
else:
IO.output(5,1)
def PORTP(pinp): #assigning GPIO logic for positive terminals by taking 'pinp' value
if(pinp&0x01 == 0x01):
IO.output(12,1) #if bit0 of 8bit 'pinp' is true pull PIN12 high
else:
IO.output(12,0) #if bit0 of 8bit 'pinp' is false pull PIN12 low
if(pinp&0x02 == 0x02):
IO.output(22,1) #if bit1 of 8bit 'pinp' is true pull PIN22 high
else:
IO.output(22,0) #if bit1 of 8bit 'pinp' is false pull PIN22 low
if(pinp&0x04 == 0x04):
IO.output(27,1) #if bit2 of 8bit 'pinp' is true pull PIN27 high
else:
IO.output(27,0) #if bit2 of 8bit 'pinp' is false pull PIN27 low
if(pinp&0x08 == 0x08):
IO.output(25,1)
else:
IO.output(25,0)
if(pinp&0x10 == 0x10):
IO.output(17,1)
else:
IO.output(17,0)
if(pinp&0x20 == 0x20):
IO.output(24,1)
else:
IO.output(24,0)
if(pinp&0x40 == 0x40):
IO.output(23,1)
else:
IO.output(23,0)
if(pinp&0x80 == 0x80):
IO.output(18,1) #if bit7 of 8bit 'pinp' is true pull PIN18 high
else:
IO.output(18,0) #if bit7 of 8bit 'pinp' is false pull PIN18 low
while 1:
for y in range (100): #execute loop 100 times
for x in range (8): #execute the loop 8 times incrementing x value from zero to seven
pin = PORTVALUE[x] #assigning value to 'pin' for each digit
PORT(pin); #mapping appropriate GPIO
pinp= C[x] #assigning character 'C' value to 'pinp'
PORTP(pinp); #turning the GPIO to show character 'C'
time.sleep(0.0005) #wait for 0.5msec
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= I[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= R[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= C[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= U[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= I[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= T[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= D[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= I[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= G[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= E[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= S[x]
PORTP(pinp);
time.sleep(0.0005)
for y in range (100):
for x in range (8):
pin = PORTVALUE[x]
PORT(pin);
pinp= T[x]
PORTP(pinp);
time.sleep(0.0005)
pinp= 0
PORTP(pinp);
time.sleep(1)
我也添加了utf-8编码。
答案 0 :(得分：2)
if(pin&0x10 == 0x10):
IO.output(19,0)
else:
IO.output(19,1)
不是有效的Python缩进。 if和else必须处于相同的缩进级别。
有关if / else语句的快速介绍，请参阅here。