feat(wsen-pads): Add climate station example with multi-sensor OLED display.

Author: MatteoCnda1

lib/wsen-pads/examples/station_env.py

@@ -1,3 +1,10 @@
+"""Climate station example using WSEN-PADS, HTS221 and SSD1327 OLED.
+
+Reads temperature and pressure from the WSEN-PADS sensor and humidity
+from the HTS221 sensor. Includes a startup calibration phase to compensate
+sensor offsets. Displays live temperature, humidity and pressure readings
+with horizontal progress bars and a comfort index on a round 128x128 OLED.
+"""
 from machine import I2C, SPI, Pin
 from time import sleep_ms
 import ssd1327
@@ -6,53 +13,58 @@
 
 # === Ecran ===
 spi = SPI(1)
-dc  = Pin("DATA_COMMAND_DISPLAY")
+dc = Pin("DATA_COMMAND_DISPLAY")
 res = Pin("RST_DISPLAY")
-cs  = Pin("CS_DISPLAY")
+cs = Pin("CS_DISPLAY")
 display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
 
 # === Capteurs ===
 i2c = I2C(1)
-pads = WSEN_PADS(i2c)   # pression + temperature
-hts  = HTS221(i2c)     # humidite
+pads = WSEN_PADS(i2c)
+hts = HTS221(i2c)
 
 # === Calibration ===
 print("Calibration en cours...")
 temps = []
-hums  = []
+hums = []
 press = []
 for _ in range(10):
     temps.append(pads.temperature())
     hums.append(hts.humidity())
     press.append(pads.pressure_hpa())
     sleep_ms(200)
 
-OFFSET_TEMP = 20.0  - (sum(temps) / len(temps))
-OFFSET_HUM  = 50.0  - (sum(hums)  / len(hums))
+OFFSET_TEMP = 20.0 - (sum(temps) / len(temps))
+OFFSET_HUM = 50.0 - (sum(hums) / len(hums))
 OFFSET_PRES = 1013.0 - (sum(press) / len(press))
 print(f"Offset T:{OFFSET_TEMP:.2f} H:{OFFSET_HUM:.2f} P:{OFFSET_PRES:.2f}")
 print("Calibration OK")
 
+ 
 # === Dessin ===
-def draw_hline(x, y, w, color=255):
+def draw_hline(x, y, w, color=15):
     for i in range(w):
         display.pixel(x + i, y, color)
 
-def draw_vline(x, y, h, color=255):
+ 
+def draw_vline(x, y, h, color=15):
     for i in range(h):
         display.pixel(x, y + i, color)
 
-def draw_rect(x, y, w, h, color=255):
+ 
+def draw_rect(x, y, w, h, color=15):
     draw_hline(x, y, w, color)
     draw_hline(x, y + h - 1, w, color)
     draw_vline(x, y, h, color)
     draw_vline(x + w - 1, y, h, color)
 
-def draw_fill_rect(x, y, w, h, color=255):
+ 
+def draw_fill_rect(x, y, w, h, color=15):
     for i in range(h):
         draw_hline(x, y + i, w, color)
 
-def draw_circle(cx, cy, r, color=255):
+ 
+def draw_circle(cx, cy, r, color=15):
     x = r
     y = 0
     err = 0
@@ -71,86 +83,90 @@ def draw_circle(cx, cy, r, color=255):
             x -= 1
             err += 1 - 2 * x
 
-def draw_bar_h(x, y, w, h, value, min_val, max_val, color=200):
-    draw_rect(x, y, w, h, 80)
+ 
+def draw_bar_h(x, y, w, h, value, min_val, max_val, color=13):
+    draw_rect(x, y, w, h, 5)
     ratio = (value - min_val) / (max_val - min_val)
     ratio = max(0.0, min(1.0, ratio))
     filled = int((w - 2) * ratio)
     if filled > 0:
         draw_fill_rect(x + 1, y + 1, filled, h - 2, color)
 
+ 
 def comfort_label(temp, hum, pres):
     if 18 <= temp <= 26 and 40 <= hum <= 60 and 1000 <= pres <= 1025:
-        return "IDEAL", 255
+        return "IDEAL", 15
     elif temp > 30 or hum > 75:
-        return "CHAUD", 180
+        return "CHAUD", 11
     elif temp < 15 or hum < 25:
-        return "FROID", 150
+        return "FROID", 9
     elif pres < 1000:
-        return "BASSE P", 150
+        return "BASSE P", 9
     elif pres > 1025:
-        return "HAUTE P", 200
+        return "HAUTE P", 13
     else:
-        return "CORRECT", 200
+        return "CORRECT", 12
+ 
 
 def draw_screen(temp, hum, pres):
     display.fill(0)
 
-    # Bordure circulaire decorative
-    draw_circle(64, 64, 62, 60)
-    draw_circle(64, 64, 60, 40)
+    # Bordure circulaire
+    draw_circle(64, 64, 62, 4)
+    draw_circle(64, 64, 60, 2)
 
     # === TITRE ===
-    display.text("CLIMAT", 35, 20, 255)
-    draw_hline(19, 29, 90, 100)
+    display.text("CLIMAT", 35, 20, 15)
+    draw_hline(19, 29, 90, 6)
 
     # === TEMPERATURE ===
-    display.text("T", 19, 35, 120)
+    display.text("T", 19, 35, 7)
     temp_str = f"{temp:.1f}C"
-    display.text(temp_str, 29, 35, 255)
-    draw_bar_h(19, 44, 90, 5, temp, 0, 50, 220)
+    display.text(temp_str, 29, 35, 15)
+    draw_bar_h(19, 44, 90, 5, temp, 0, 50, 13)
 
     # === HUMIDITE ===
-    display.text("H", 19, 52, 120)
+    display.text("H", 19, 52, 7)
     hum_str = f"{hum:.1f}%"
-    display.text(hum_str, 29, 52, 255)
-    draw_bar_h(19, 61, 90, 5, hum, 0, 100, 180)
+    display.text(hum_str, 29, 52, 15)
+    draw_bar_h(19, 61, 90, 5, hum, 0, 100, 11)
 
     # === PRESSION ===
-    display.text("P", 19, 69, 120)
+    display.text("P", 19, 69, 7)
     pres_str = f"{pres:.0f}hPa"
-    display.text(pres_str, 29, 69, 255)
-    draw_bar_h(19, 78, 90, 5, pres, 950, 1050, 160)
+    display.text(pres_str, 29, 69, 15)
+    draw_bar_h(19, 78, 90, 5, pres, 950, 1050, 10)
 
     # === SEPARATEUR ===
-    draw_hline(19, 86, 90, 70)
+    draw_hline(19, 86, 90, 4)
 
     # === CONFORT ===
     label, c_color = comfort_label(temp, hum, pres)
     cx = 64 - len(label) * 4
     display.text(label, cx, 92, c_color)
 
     # === CAPTEURS ===
-    draw_hline(19, 102, 90, 50)
-    display.text("PADS+HTS221", 22, 106, 60)
+    draw_hline(19, 102, 90, 3)
+    display.text("PADS+HTS221", 22, 106, 4)
 
     display.show()
 
+ 
 # === Boucle principale ===
 print("Station climatique demarree")
 while True:
     try:
         temp = pads.temperature() + OFFSET_TEMP
-        hum  = hts.humidity()     + OFFSET_HUM
-        pres = pads.pressure_hpa()+ OFFSET_PRES
-        hum  = max(0.0, min(100.0, hum))
+        hum = hts.humidity() + OFFSET_HUM
+        pres = pads.pressure_hpa() + OFFSET_PRES
+        hum = max(0.0, min(100.0, hum))
         print(f"T:{temp:.2f}C  H:{hum:.2f}%  P:{pres:.1f}hPa")
         draw_screen(temp, hum, pres)
     except Exception as e:
         print("Erreur:", e)
         display.fill(0)
-        display.text("ERREUR", 35, 55, 255)
-        display.text(str(e)[:16], 0, 70, 150)
+        display.text("ERREUR", 35, 55, 15)
+        display.text(str(e)[:16], 0, 70, 9)
         display.show()
     sleep_ms(1000)