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修正位置最高位值要取反

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chenyue
2026-07-08 18:16:27 +08:00
parent 2df599dc14
commit 5fe99d20e5
1 changed files with 47 additions and 15 deletions
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sl2-100/pd.py
+47 -15
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@@ -99,6 +99,7 @@ class Decoder(srd.Decoder):
self.yv_cnt = 0 #y坐标校验累积的数据位个数
self.yv_first = 0 #y坐标校验起始位置
self.state = 'HEADER' #当前处理的字段
self.state2 = 'FIND START' #当前处理的字段
self.data = 0 #存放坐标值数据
self.highpin = 0 #当前采样宽度(78.125ns)内高电平数量
self.lowpin = 0 #当前采样宽度(78.125ns)内低电平数量
@@ -126,14 +127,17 @@ class Decoder(srd.Decoder):
if self.state == 'HEADER':
self.header_str += str(bit)
self.head_cnt = self.head_cnt+1
if self.head_cnt == 8:
if self.head_cnt == 6:
self.put(self.header_first, es, self.out_ann,[2, ['HEADER_x:' + self.header_str]])
self.state = 'xpos'
self.xpos_first = es
self.xpos_cnt = 0 #当前坐标 位数归零,准备累积
self.data = 0 #当前坐标值归零,准备开始累积
elif self.state == 'xpos':
self.data = (bit << self.xpos_cnt) | self.data
if self.xpos_cnt == 19:
self.data = ((not bit) << self.xpos_cnt) | self.data
else:
self.data = (bit << self.xpos_cnt) | self.data
self.xpos_cnt = self.xpos_cnt+1
if self.xpos_cnt == 20:
self.put(self.xpos_first, es, self.out_ann,[3, ['X坐标:' + ': 0x%x' % self.data + ' = %d' % self.data]])
@@ -162,7 +166,10 @@ class Decoder(srd.Decoder):
self.ypos_cnt = 0 #当前坐标 位数归零,准备累积
self.data = 0 #当前坐标值归零,准备开始累积
elif self.state == 'ypos':
self.data = (bit << self.ypos_cnt) | self.data
if self.ypos_cnt == 19:
self.data = ((not bit) << self.ypos_cnt) | self.data
else:
self.data = (bit << self.ypos_cnt) | self.data
self.ypos_cnt = self.ypos_cnt+1
if self.ypos_cnt == 20:
self.put(self.ypos_first, es, self.out_ann,[7, ['y坐标:' + ': 0x%x' % self.data + ' = %d' % self.data]])
@@ -178,6 +185,7 @@ class Decoder(srd.Decoder):
if self.yv_cnt == 4:
self.put(self.yv_first, es, self.out_ann,[9, ['y校验:' + self.yv_str]])
self.state = 'HEADER'
self.state2 = 'FIND START'
self.header_first = es
self.head_cnt = 0
self.header_str = ""
@@ -223,18 +231,42 @@ class Decoder(srd.Decoder):
self.lowpin = 0 #当前采样宽度(78.125ns)内低电平数量
while True:
(pin,) = self.wait({0:'n'})
#当前已经累积的采样宽度
total_width = self.samplenum - self.oldsamplenum
if pin==1:
self.highpin += 1 #当前采样宽度内高电平数量加1
else:
self.lowpin += 1 #当前采样宽度内低电平数量加1
if total_width>=self.bit_width : #累积采样宽度接近设置的采样次数
self.oldsamplenum = self.oldsamplenum+self.bit_width #当前采样结束作为下一采样的开始
self.manchester_decode(1 if self.highpin > self.lowpin else 0)
self.highpin = 0 #当前采样宽度(78.125ns)内高电平数量
self.lowpin = 0 #当前采样宽度(78.125ns)内低电平数量
if self.state2 == 'FIND START':
#self.file.write('FIND START'+ '\n')
self.wait({0: 'l'})
self.oldsamplenum = self.samplenum
self.state2 = 'FIND START2'
if self.state2 == 'FIND START2':
#self.file.write('FIND START2'+ '\n')
self.wait({0: 'r'})
start_width = self.samplenum - self.oldsamplenum
self.oldsamplenum = self.samplenum
if start_width >= self.bit_width*2.2:
self.state2 = 'FIND START3'
else:
self.state2 = 'FIND START'
if self.state2 == 'FIND START3':
#self.file.write('FIND START3'+ '\n')
(pin,) = self.wait({0:'n'})
#当前已经累积的采样宽度
total_width = self.samplenum - self.oldsamplenum
if total_width>=self.bit_width : #累积采样宽度接近设置的采样次数
self.state2 = 'FIND DATA'
self.oldsamplenum = self.samplenum
if self.state2 == 'FIND DATA':
#self.file.write('FIND DATA'+ '\n')
(pin,) = self.wait({0:'n'})
#当前已经累积的采样宽度
total_width = self.samplenum - self.oldsamplenum
if pin==1:
self.highpin += 1 #当前采样宽度内高电平数量加1
else:
self.lowpin += 1 #当前采样宽度内低电平数量加1
if total_width>=self.bit_width : #累积采样宽度接近设置的采样次数
self.oldsamplenum = self.oldsamplenum+self.bit_width #当前采样结束作为下一采样的开始
self.manchester_decode(1 if self.highpin > self.lowpin else 0)
self.highpin = 0 #当前采样宽度(78.125ns)内高电平数量
self.lowpin = 0 #当前采样宽度(78.125ns)内低电平数量
# self.wait()可带参数，也可以不带参数，不带参数时将返回每个采样数据
# 参数{0:'r'}， 0表示匹配channels第１项绑定的通道，'r'表示查找向上边沿
# wait函数可传多个条件，与条件:{0:'f',１:'r'},　或条件：[{0:'f'},{１:'r'}]