def reset(self):
self.state = 'IDLE'
self.last_write = 0xFF # Chip port default state is high.
-
- self.logic_es = 1
- self.logic_data = []
- for i in range(NUM_OUTPUT_CHANNELS):
- self.logic_data.append(bytes([1]))
+ self.last_write_es = 0
def start(self):
self.out_ann = self.register(srd.OUTPUT_ANN)
self.out_logic = self.register(srd.OUTPUT_LOGIC)
+ def flush(self):
+ self.put_logic_states()
+
def putx(self, data):
self.put(self.ss, self.es, self.out_ann, data)
def put_logic_states(self):
- if (self.es > self.logic_es):
- for i in range(NUM_OUTPUT_CHANNELS):
- self.put(self.logic_es, self.es, self.out_logic, [i, self.logic_data[i]])
- self.logic_es = self.es
+ if (self.es > self.last_write_es):
+ data = bytes([self.last_write])
+ self.put(self.last_write_es, self.es, self.out_logic, [0, data])
+ self.last_write_es = self.es
def handle_io(self, b):
if self.state == 'READ DATA':
'(%02X) are different' % self.last_write]])
else:
operation = ['Outputs set', 'W']
+ self.put_logic_states()
self.last_write = b
+
self.putx([1, [operation[0] + ': %02X' % b,
operation[1] + ': %02X' % b]])
- for i in range(NUM_OUTPUT_CHANNELS):
- bit = (b & (1 << i)) != 0
- self.logic_data[i] = bytes([bit])
-
def check_correct_chip(self, addr):
if addr != 0x25:
self.putx([2, ['Warning: I²C slave 0x%02X not a PCA9571 '
cmd, databyte = data
self.ss, self.es = ss, es
- self.put_logic_states()
-
# State machine.
if cmd in ('ACK', 'BITS'): # Discard 'ACK' and 'BITS'.
pass