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optimize protocol of capture function

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This commit is contained in:
cho45 2019-08-23 02:22:42 +09:00
parent 1c4718ae4a
commit 7ce755d666
2 changed files with 7 additions and 9 deletions
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8
python/nanovna.py
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@ -4,6 +4,7 @@ import numpy as np
import pylab as pl
import scipy.signal as signal
import time
import struct
REF_LEVEL = (1<<9)
@ -191,11 +192,8 @@ class NanoVNA():
def capture(self):
from PIL import Image
self.send_command("capture\r")
data = self.fetch_data()
x = []
for line in data.split('\n'):
if line:
x.extend([int(d, 16) for d in line.strip().split(' ')])
b = self.serial.read(320 * 240 * 2)
x = struct.unpack(">76800H", b)
# convert pixel format from 565(RGB) to 8888(RGBA)
arr = np.array(x, dtype=np.uint32)
arr = 0xFF000000 + ((arr & 0xF800) >> 8) + ((arr & 0x07E0) << 5) + ((arr & 0x001F) << 19)