From af495297728b449832a4f780d1f59c1cea5c295d Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Fri, 26 Aug 2016 15:21:08 +0200 Subject: [PATCH] tlc5620: Convert to PD API version 3. --- decoders/tlc5620/pd.py | 38 +++++++++++++++++--------------------- 1 file changed, 17 insertions(+), 21 deletions(-) diff --git a/decoders/tlc5620/pd.py b/decoders/tlc5620/pd.py index 317e4ed..3fccd47 100644 --- a/decoders/tlc5620/pd.py +++ b/decoders/tlc5620/pd.py @@ -28,7 +28,7 @@ dacs = { } class Decoder(srd.Decoder): - api_version = 2 + api_version = 3 id = 'tlc5620' name = 'TI TLC5620' longname = 'Texas Instruments TLC5620' @@ -72,7 +72,6 @@ class Decoder(srd.Decoder): ) def __init__(self): - self.oldpins = self.oldclk = self.oldload = self.oldldac = None self.bits = [] self.ss_dac_first = None self.ss_dac = self.es_dac = 0 @@ -183,28 +182,25 @@ class Decoder(srd.Decoder): [8, ['Updating voltages: %s' % s, s, s.replace('DAC', '')]]) self.ss_dac_first = None - def handle_new_dac_bit(self): - self.bits.append([self.datapin, self.samplenum]) - - def decode(self, ss, es, data): - for (self.samplenum, pins) in data: - - # Ignore identical samples early on (for performance reasons). - if self.oldpins == pins: - continue - self.oldpins, (clk, self.datapin, load, ldac) = pins, pins - self.ldac = ldac + def handle_new_dac_bit(self, datapin): + self.bits.append([datapin, self.samplenum]) + def decode(self): + while True: # DATA is shifted in the DAC on the falling CLK edge (MSB-first). # A falling edge of LOAD will latch the data. - if self.oldload == 1 and load == 0: + # Wait for one (or multiple) of the following conditions: + # a) Falling edge on CLK, and/or + # b) Falling edge on LOAD, and/or + # b) Falling edge on LDAC + pins = self.wait([{0: 'f'}, {2: 'f'}, {3: 'f'}]) + self.ldac = pins[3] + + # Handle those conditions (one or more) that matched this time. + if self.matched[0]: + self.handle_new_dac_bit(pins[1]) + if self.matched[1]: self.handle_falling_edge_load() - if self.oldldac == 1 and ldac == 0: + if self.matched[2]: self.handle_falling_edge_ldac() - if self.oldclk == 1 and clk == 0: - self.handle_new_dac_bit() - - self.oldclk = clk - self.oldload = load - self.oldldac = ldac -- 2.30.2