X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=drv%2Fntc.c;h=cc74e306250867d74631b9034085971b1e879973;hb=HEAD;hp=5f024037bef3070bedce94697aa86b0078345576;hpb=0c2f7108e2f9b6fa567bc83dda9a313fffceb286;p=bertos.git

diff --git a/drv/ntc.c b/drv/ntc.c
deleted file mode 100755
index 5f024037..00000000
--- a/drv/ntc.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*!
- * \file
- * <!--
- * Copyright 2004, 2005 Develer S.r.l. (http://www.de+veler.com/)
- * All Rights Reserved.
- * -->
- *
- * \brief Driver for NTC (reads a temperature through an ADC)
- *
- * \version $Id$
- *
- * \author Giovanni Bajo <rasky@develer.com>
- * \author Francesco Sacchi <batt@develer.com>
- *
- *
- * This module handles an external NTC bound to an AD converter. As usual,
- * it relies on a low-level API (ntc_hw_*) (see below):
- *
- */
-
-/*#*
- *#* $Log$
- *#* Revision 1.1  2005/11/04 17:59:47  bernie
- *#* Import into DevLib.
- *#*
- *#* Revision 1.1  2005/05/24 09:17:58  batt
- *#* Move drivers to top-level.
- *#*/
-
-#include <drv/ntc.h>
-#include <hw_ntc.h>
-#include <ntc_map.h>
-
-#include <cfg/debug.h>
-
-DB(bool ntc_initialized;)
-
-/*!
- * Find in a table of values \a orig_table of size \a size, the index which
- * value is less or equal to \a val.
- *
- * \retval 0 When \a val is higher than the first table entry.
- * \retval size When \a val is lower than the last table entry.
- * \retval 1..size-1 When \a val is within the table.
- */
-static size_t upper_bound(const res_t *orig_table, size_t size, res_t val)
-{
-	const res_t *table = orig_table;
-
-	while (size)
-	{
-		size_t pos = size / 2;
-		if (val > table[pos])
-			size = pos;
-		else
-		{
-			table += pos+1;
-			size -= pos+1;
-		}
-	}
-
-	return table - orig_table;
-}
-
-
-/*!
- * Read the temperature for the NTC channel \a dev.
- * First read the resistence of the NTC through ntc_hw_read(), then,
- * for the conversion from resistance to temperature, since the formula
- * varies from device to device, we implemented a generic system using
- * a table of data which maps temperature (index) to resistance (data).
- * The range of the table (min/max temperature) and the step
- * (temperature difference between two consecutive elements of the table)
- * is variable and can be specified. Notice that values inbetween the
- * table elements are still possible as the library does a linear
- * interpolation using the actual calculated resistance to find out
- * the exact temperature.
- *
- * The low-level API provides a function to get access to a description
- * of the NTC (ntc_hw_getInfo()), including the resistance table.
- *
- */
-deg_t ntc_read(NtcDev dev)
-{
-	const NtcHwInfo* hw = ntc_hw_getInfo(dev);
-	const res_t* r = hw->resistances;
-
-	float rx;
-	size_t i;
-	deg_t degrees;
-
-	rx = ntc_hw_read(dev);
-
-
-	i = upper_bound(r, hw->num_resistances, rx);
-	ASSERT(i <= hw->num_resistances);
-
-	if (i >= hw->num_resistances)
-		return NTC_SHORT_CIRCUIT;
-	else if (i == 0)
-		return NTC_OPEN_CIRCUIT;
-
-	/*
-	 * Interpolated value in 0.1 degrees multiplied by 10:
-	 *   delta t          step t
-	 * ----------  = ----------------
-	 * (rx - r[i])   (r[i-1] - r [i])
-	 */
-	float tmp;
-	tmp = 10 * hw->degrees_step * (rx - r[i]) / (r[i - 1] - r[i]);
-
-	/*
-	 * degrees = integer part corresponding to the superior index
-	 *           in the table multiplied by 10
-	 *           - decimal part interpolated (already multiplied by 10)
-	 */
-	degrees = (i * hw->degrees_step + hw->degrees_min) * 10 - (int)(tmp);
-
-	//kprintf("dev= %d, I=%d, degrees = %d\n", dev, i , degrees);
-
-	return degrees;
-}
-
-
-/*!
- * Init NTC hardware.
- */
-void ntc_init(void)
-{
-	NTC_HW_INIT;
-	DB(ntc_initialized = true;)
-}
-