Suga koubou / AS3935

AMS, Franklin Lightning Sensor "AS3935" Library

Franklin Lightning Sensor

雷（落雷）センサー AS3935 用のライブラリです。

Sample

I2C接続

for LPC1114

main.cpp

#include "mbed.h"
#include "AS3935.h"

Serial pc(USBTX, USBRX);
DigitalOut led1(LED1);

AS3935 as(dp5, dp27, dp26); // sda, scl, irq
//I2C i2c(dp5, dp27);
//AS3935 as(i2c, dp26); // i2c, irq

void lightning () {
    int energy, distance;
    as.read(energy, distance);
    pc.printf("Lightning energy=%d distance=%d\r\n", energy, distance);
}

int main() {
    pc.baud(115200);
    pc.printf("*** AS3935\r\n");
    as.init();
    as.attach(&lightning);
    for (;;) {
        led1 = ! led1;
        wait(0.2);
    }
}

Diff: AS3935.h

Revision:
0:5a6d7a605d26
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AS3935.h	Mon Apr 13 00:52:04 2015 +0000
@@ -0,0 +1,66 @@
+/*
+ * AMS, Franklin Lightning Sensor "AS3935" Library
+ * Copyright (c) 2015 Hiroshi Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+// http://ams.com/eng/Products/Lightning-Sensor/Franklin-Lightning-Sensor/AS3935
+
+#ifndef _AS3935_h_
+#define _AS3935_h_
+
+#include "mbed.h"
+
+class AS3935 {
+public:
+    /**
+     * @param i2c I2C class
+     * @param irq IRQ pin
+     */
+    AS3935 (I2C &i2c, PinName irq);
+    /**
+     * @param sda I2C SDA pin
+     * @param scl I2C SCL pin
+     * @param irq IRQ pin
+     */
+    AS3935 (PinName sda, PinName scl, PinName irq);
+
+    /** Initialize AS3935
+     */
+    void init ();
+
+    /** Read lightning signal validation
+     * @param energy (return) Energy of the Single Lightning
+     * @param distance (return) Distance estimation
+     */
+    void read (int &energy, int &distance);
+
+    /** Attach a function, lightning interrupt
+     * @param fptr pointer to a void function, or 0 to set as none
+     */
+    void attach(void (*fptr)(void)) { 
+        _func.attach(fptr);
+    }
+    /** Attach a member function, lightning interrupt
+     * @param tptr pointer to the object to call the member function on
+     * @param mptr pointer to the member function to be called
+     */
+    template<typename T>
+    void attach(T *tptr, void (T::*mptr)(void)) { 
+        _func.attach(tptr, mptr); 
+    }
+
+private:
+    I2C _i2c;
+    InterruptIn _irq;
+    int _freq;
+    int _mode;
+    int _type;
+
+    FunctionPointer _func;
+
+    void calib_lco ();
+    void isr_freq ();
+    void isr_lightning ();
+};
+
+#endif