example with auto + cleaning

.gitignore

@@ -4,6 +4,8 @@ __javascript__/
 *.py[cod]
 *$py.class
 
+
+*.wav
 .idea/
 
 # C extensions

demo_neopixel.py

@@ -1,36 +1,35 @@
 #!/bin/env python3
 import gex
 
-client = gex.Client(port='/dev/ttyACM0')
-
-# Neopixel strip
-strip = gex.Neopixel(client, 'npx')
-# Load RGB to the strip
-strip.load([0xFF0000, 0x00FF00, 0x0000FF, 0xFF00FF])
-
-# I2C bus
-i2c = gex.I2C(client, 'i2c')
-# Read device register
-print(i2c.read_reg(address=0x76, reg=0xD0))
-# Write value to a register
-i2c.write_reg(address=0x76, reg=0xF4, value=0xFA)
-
-# SPI
-spi = gex.SPI(client, 'spi')
-# Query slave 0
-print(spi.query(0, [0xAA, 0xBB, 0xCC, 0xDD], rlen=2, rskip=4))
-# Write slaves 0 and 2
-spi.multicast(0b101, [0xDE, 0xAD, 0xBE, 0xEF])
-
-# USART
-usart = gex.USART(client, 'serial')
-# Handle received data
-usart.listen(lambda x: print(x, end='', flush=True))
-# Write a string
-usart.write("AHOJ\r\n")
-
-# Digital output (8 pins)
-display = gex.DOut(client, 'display')
-display.write(0b10110011)
-display.toggle(0b00010010)
+with gex.Client(gex.TrxRawUSB()) as client:
+    # Neopixel strip
+    strip = gex.Neopixel(client, 'npx')
+    # Load RGB to the strip
+    strip.load([0xFF0000, 0x00FF00, 0x0000FF, 0xFF00FF])
+    #
+    # # I2C bus
+    # i2c = gex.I2C(client, 'i2c')
+    # # Read device register
+    # print(i2c.read_reg(address=0x76, reg=0xD0))
+    # # Write value to a register
+    # i2c.write_reg(address=0x76, reg=0xF4, value=0xFA)
+    #
+    # # SPI
+    # spi = gex.SPI(client, 'spi')
+    # # Query slave 0
+    # print(spi.query(0, [0xAA, 0xBB, 0xCC, 0xDD], rlen=2, rskip=4))
+    # # Write slaves 0 and 2
+    # spi.multicast(0b101, [0xDE, 0xAD, 0xBE, 0xEF])
+    #
+    # # USART
+    # usart = gex.USART(client, 'serial')
+    # # Handle received data
+    # usart.listen(lambda x: print(x, end='', flush=True))
+    # # Write a string
+    # usart.write("AHOJ\r\n")
+    #
+    # # Digital output (8 pins)
+    # display = gex.DOut(client, 'display')
+    # display.write(0b10110011)
+    # display.toggle(0b00010010)
 

gex/PayloadParser.py

@@ -23,7 +23,7 @@ class PayloadParser:
     def _slice(self, n:int) -> bytearray:
         """ Extract a slice and advance the read pointer for the next slice """
         if self.ptr + n > len(self.buf):
-            raise Exception("Payload parser underrun")
+            raise Exception("Payload parser underrun - frame: %s" % str(self.buf))
 
         slice = self.buf[self.ptr:self.ptr + n]
         self.ptr += n

gex/units/ADC.py

@@ -361,15 +361,16 @@ class ADC(gex.Unit):
         def lst(frame):
             pp = gex.PayloadParser(frame.data)
 
-            index = pp.u8()
-            if index != self._bcap_next_id:
-                self._bcap_done = True
-                raise Exception("Lost capture data frame! Expected %d, got %d" % (self._bcap_next_id, index))
-                #return TF.CLOSE XXX
+            if frame.type == EVT_CAPT_MORE or len(frame.data) != 0:
+                index = pp.u8()
+                if index != self._bcap_next_id:
+                    self._bcap_done = True
+                    raise Exception("Lost capture data frame! Expected %d, got %d" % (self._bcap_next_id, index))
+                    #return TF.CLOSE XXX
 
-            self._bcap_next_id = (self._bcap_next_id + 1) % 256
+                self._bcap_next_id = (self._bcap_next_id + 1) % 256
 
-            buffer.extend(pp.tail())
+                buffer.extend(pp.tail())
 
             if frame.type == EVT_CAPT_DONE:
                 self._bcap_done = True

test_adc.py

@@ -0,0 +1,28 @@
+#!/bin/env python3
+import time
+
+import gex
+import numpy as np
+from matplotlib import pyplot as plt
+
+from scipy.io import wavfile
+
+with gex.Client(gex.TrxRawUSB()) as client:
+    adc = gex.ADC(client, 'a')
+
+    adc.set_active_channels([3])
+    rate=44000
+    fs = adc.set_sample_rate(rate)
+
+    count = 44000*2
+    data = np.add(adc.capture(count) / 4096, -0.5)
+
+    if data is not None:
+        # wavfile.write('file.wav', rate, data)
+        # print("Ok")
+
+        plt.plot(data, 'r-', lw=1)
+        plt.show()
+    else:
+        print("Nothing rx")
+

test_onewire.py

@@ -15,9 +15,24 @@ with gex.Client(gex.TrxRawUSB()) as client:
         pp = gex.PayloadParser(data)
         return pp.i16() * 0.0625
 
+    def meas2(addr, addr2):
+        ow.write([0x44], addr=addr)
+        ow.write([0x44], addr=addr2)
+        ow.wait_ready()
+
+        data = ow.query([0xBE], 9, addr=addr)
+        pp = gex.PayloadParser(data)
+        a = pp.i16() * 0.0625
+
+        data = ow.query([0xBE], 9, addr=addr2)
+        pp = gex.PayloadParser(data)
+        b = pp.i16() * 0.0625
+        return a, b
+
     while True:
-        a = meas(6558392391241695016)
-        b = meas(1802309978572980008)
+        (a, b) = meas2(6558392391241695016, 1802309978572980008)
+        # a = meas(6558392391241695016)
+        # b = meas(1802309978572980008)
         print("in: %.2f °C, out: %f °C" % (a, b))