From 3443edf23337fb5d9ce63075ead80c4779cf823a Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Sun, 27 Mar 2022 12:48:36 +0100
Subject: break code into logical components

---
 pm.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 pm.h

(limited to 'pm.h')

diff --git a/pm.h b/pm.h
new file mode 100644
index 0000000..634c1b4
--- /dev/null
+++ b/pm.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <sps30.h>
+
+#include "data.h"
+
+class PM {
+private:
+  uint8_t auto_clean_days;
+public:
+  PM(uint8_t acd=4) :auto_clean_days(acd) {}
+
+  void start() {
+    // this will try to re-init Wire, emit a warning, and carry on
+    sensirion_i2c_init();
+
+    while (sps30_probe() != 0) {
+      Serial.print("PM sensor probing failed\n");
+      delay(500);
+    }
+
+    int16_t ret;
+
+    ret = sps30_set_fan_auto_cleaning_interval_days(auto_clean_days);
+    if (ret) {
+      Serial.print("PM setting the auto-clean interval error: ");
+      Serial.println(ret);
+    }
+
+    ret = sps30_start_measurement();
+    if (ret < 0) {
+      Serial.print("PM starting measurement error\n");
+    }
+  }
+
+  bool dataReady() {
+    uint16_t data_ready;
+    int16_t ret;
+
+    ret = sps30_read_data_ready(&data_ready);
+    if (ret < 0) {
+      Serial.print("PM reading data-ready flag error: ");
+      Serial.println(ret);
+      return false;
+    } else if (!data_ready) {
+      return false;
+    }
+
+    return true;
+  }
+
+  void read(SensorData *data) {
+    char serial[SPS30_MAX_SERIAL_LEN];
+    int16_t ret;
+
+    ret = sps30_read_measurement(&(data->pm));
+
+    if (ret <0) {
+      Serial.print("PM reading measurement error: ");
+      Serial.println(ret);
+    }
+  }
+};
-- 
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