Add weather files

2 files changed, 98 insertions, 0 deletions

diff --git a/weather_oneline.py b/weather_oneline.py
new file mode 100644
index 0000000..745d37d
--- /dev/null
+++ b/weather_oneline.py
@@ -0,0 +1,13 @@
+import board
+import busio
+import digitalio
+import adafruit_bme280
+import datetime
+
+i2c = busio.I2C(board.SCL, board.SDA)
+bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c)
+
+temp_c = bme280.temperature
+temp_f = temp_c * 9 / 5 + 32
+response = "%s,%0.1f,%0.1f,%0.1f" % (datetime.datetime.now(), temp_f, bme280.humidity, bme280.pressure)
+print(response)
diff --git a/weather_server.py b/weather_server.py
new file mode 100644
index 0000000..0e43092
--- /dev/null
+++ b/weather_server.py
@@ -0,0 +1,85 @@
+import matplotlib as mpl
+import matplotlib.pyplot as plt
+from datetime import datetime
+from http.server import HTTPServer, BaseHTTPRequestHandler
+
+import board
+import busio
+import digitalio
+import adafruit_bme280
+
+class WeatherHTTPRequestHandler(BaseHTTPRequestHandler):
+    def __init__(self, *args):
+        BaseHTTPRequestHandler.__init__(self, *args)
+
+    def do_GET(self):
+        if self.path == "/":
+            response = b'<img src="/plot.png">'
+            self.send_response(200)
+            self.end_headers()
+            self.wfile.write(response)
+        elif self.path == "/plot.png":
+            self.create_fig()
+            with open("/home/pi/plot.png", "rb") as f:
+                data = f.read()
+                self.send_response(200)
+                self.end_headers()
+                self.wfile.write(data)
+
+    def create_fig(self):
+        with open("/home/pi/log.csv") as f:
+            date = []
+            temp = []
+            humid = []
+            press = []
+            for line in f.readlines():
+                parts = line.split(",")
+                date.append(datetime.strptime(parts[0], "%Y-%m-%d %H:%M:%S.%f"))
+                temp.append(float(parts[1]))
+                humid.append(float(parts[2]))
+                press.append(float(parts[3]))
+
+        ax1 = plt.subplot(311)
+        ax1.plot_date(date, temp, 'r-')
+        ax1.xaxis.set_major_locator(mpl.dates.DayLocator())
+        ax1.xaxis.set_minor_locator(mpl.dates.HourLocator(range(0, 25, 6)))
+        ax1.xaxis.set_major_formatter(mpl.dates.DateFormatter("%Y-%m-%d"))
+        ax1.fmt_xdata = mpl.dates.DateFormatter("%Y-%m-%d")
+        ax1.set_ylabel("temperature")
+
+        ax2 = plt.subplot(312)
+        ax2.plot_date(date, humid, 'b-')
+        ax2.xaxis.set_major_locator(mpl.dates.DayLocator())
+        ax2.xaxis.set_minor_locator(mpl.dates.HourLocator(range(0, 25, 6)))
+        ax2.xaxis.set_major_formatter(mpl.dates.DateFormatter("%Y-%m-%d"))
+        ax2.fmt_xdata = mpl.dates.DateFormatter("%Y-%m-%d")
+        ax2.set_ylabel("humidity")
+
+        ax3 = plt.subplot(313)
+        ax3.plot_date(date, press, 'g-')
+        ax3.xaxis.set_major_locator(mpl.dates.DayLocator())
+        ax3.xaxis.set_minor_locator(mpl.dates.HourLocator(range(0, 25, 6)))
+        ax3.xaxis.set_major_formatter(mpl.dates.DateFormatter("%Y-%m-%d"))
+        ax3.fmt_xdata = mpl.dates.DateFormatter("%Y-%m-%d")
+        ax3.set_ylabel("pressure")
+        #fig.autofmt_xdate()
+
+        plt.setp(ax2, xticklabels=[])
+        plt.setp(ax3, xticklabels=[])
+
+        fig = plt.gcf()
+        fig.set_size_inches(12,8)
+
+        plt.savefig("/home/pi/plot.png")
+
+
+if __name__ == "__main__":
+    i2c = busio.I2C(board.SCL, board.SDA)
+    bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c)
+    print("Starting http server")
+    http = HTTPServer(("", 80), WeatherHTTPRequestHandler)
+    print("serving forever")
+    http.serve_forever()
+
+
+