added guhRF; added atmega256rfr2 support

platform/RaspBee/dev/battery-sensor.c

@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2012, BinaryLabs.
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+* 1. Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* 2. Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in the
+* documentation and/or other materials provided with the distribution.
+* 3. Neither the name of the Institute nor the names of its contributors
+* may be used to endorse or promote products derived from this software
+* without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+* SUCH DAMAGE.
+*
+* @(#)$Id: battery-sensor.h,v 1.1 2012/08/25 19:34:06 nifi Exp $
+*/
+
+/**
+* \file
+* Battery sensor file for Atmega128rfa1.
+* \author
+* Paulo Louro <paulolouro@binarylabs.dk>
+* Harald Pichler <harald@the-develop.net>
+*/
+
+/**
+*The atmel rf23x radios have a low voltage detector that can be configured in units of 75 millivolts. Here is example *code for the ATmega128rfa1, where the BATMON register is in extended io space [dak664]
+*/
+
+#include "dev/battery-sensor.h"
+#include "dev/batmon.h"
+
+const struct sensors_sensor battery_sensor;
+/*---------------------------------------------------------------------------*/
+
+/**
+* \return Voltage on battery measurement with BATMON register.
+*/
+static int
+value(int type)
+{
+
+  uint16_t h;
+/*
+  uint8_t p1;
+  BATMON = 16; //give BATMON time to stabilize at highest range and lowest voltage
+
+// Bandgap can't be measured against supply voltage in this chip.
+// Use BATMON register instead
+  for ( p1=16; p1<31; p1++) {
+    BATMON = p1;
+    clock_delay_usec(100); // delay needed !!
+    if ((BATMON&(1<<BATMON_OK))==0) break;
+  }
+  h=2550-75*16-75+75*p1; //-75 to take the floor of the 75 mv transition window
+*/
+  batmon_get_voltage(&h);
+  return h;
+}
+/*---------------------------------------------------------------------------*/
+static int
+configure(int type, int c)
+{
+  // No configuration needed. readADC() handles all the config needed.
+  batmon_init();
+  return type == SENSORS_ACTIVE;
+}
+/*---------------------------------------------------------------------------*/
+static int
+status(int type)
+{
+  // analog sensors are always ready
+  return 1;
+}
+/*---------------------------------------------------------------------------*/
+SENSORS_SENSOR(battery_sensor, BATTERY_SENSOR, value, configure, status);