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Added linux USB serial port probe

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Furrtek
2022-11-19 03:38:33 +01:00
parent 78e76efe7f
commit 63b06d6bc6
1 changed files with 43 additions and 30 deletions
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73
tools_python/tx.py
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@@ -4,31 +4,44 @@
import serial
def search_esl_blaster():
found = 0
for n in range(1, 20):
comport = "COM" + str(n)
try:
ser = serial.Serial(comport, 57600, timeout = 1) # 1s timeout for read
ser.write("?".encode())
ser.flush()
test = ser.read_until("ESLBlaster")
ser.close()
if (len(test) >= 10):
print("Found ESL Blaster on " + comport)
found = 1
break
else:
print("Timeout on " + comport)
except serial.SerialException:
#print("SerialException on " + comport) # Debug
continue
def try_serialport(comport):
try:
ser = serial.Serial(comport, 57600, timeout = 1) # 1s timeout for read
ser.write("?".encode())
ser.flush()
test = ser.read_until("ESLBlaster")
ser.close()
if (len(test) >= 10):
print("Found ESL Blaster on " + comport)
return True
else:
print("Timeout on " + comport)
return False
except serial.SerialException:
#print("SerialException on " + comport) # Debug
return False
if (found == 0):
print("Could not find ESL Blaster.")
return "0"
else:
return comport
def search_esl_blaster():
found = False
for n in range(1, 10):
comport = "COM" + str(n)
if try_serialport(comport):
found = True
break
if found == False:
for n in range(1, 10):
comport = "/dev/ttyACM" + str(n)
if try_serialport(comport):
found = True
break
if found == False:
print("Could not find ESL Blaster.")
return "0"
else:
return comport
def transmit_serial(frames, port):
ser = serial.Serial(port, 57600, timeout = 10) # 10s timeout for read
@@ -38,10 +51,10 @@ def transmit_serial(frames, port):
for fr in frames:
data_size = len(fr) - 2
repeats = fr[-2] + (fr[-1] * 256)
if repeats > 255:
if repeats > 255: # Cap to one byte for the simple serial transmitter
repeats = 255
print("Transmitting frame %u/%u, length %u, repeated %u times." % (i, frame_count, data_size, repeats))
ba = bytearray()
ba.append(data_size)
ba.append(repeats)
@@ -70,14 +83,14 @@ def transmit_esl_blaster(frames, port):
print("Transmitting frame %u/%u, length %u, repeated %u times." % (i, frame_count, data_size, repeats))
ba = bytearray()
ba.append(76) # 'L'
ba.append(76) # L:Load
ba.append(data_size)
ba.append(30) # 30*50 = 1500 timer ticks between repeats
ba.append(repeats & 255)
ba.append((repeats // 256) & 255)
for b in range(0, len(fr) - 2):
for b in range(0, data_size):
ba.append(fr[b])
ba.append(84) # 'T'
ba.append(84) # T:Transmit
# DEBUG
#for b in ba:
@@ -86,7 +99,7 @@ def transmit_esl_blaster(frames, port):
ser.write(ba)
ser.flush()
ser.read_until(b'K')
ser.read_until(b'K') # Wait for transmit done
i += 1
ser.close()