Update to CYGPKG_IO_ADC

["Christophe Coutand" <ccoutand@stmi.com>]

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Added option to flush the ADC sample buffer.

Christophe

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# HG changeset patch
# Parent fc4749a6a0dd02e585fc84a875f8f39f7a4c00f7
# User ccoutand
# Date 1274519827 -7200

diff --git a/packages/io/adc/current/ChangeLog b/packages/io/adc/current/ChangeLog
--- a/packages/io/adc/current/ChangeLog
+++ b/packages/io/adc/current/ChangeLog
@@ -1,3 +1,8 @@
+2010-02-25  ccoutand  <ccoutand@stmi.com>
+
+	* src/adc.c: Add CYG_IO_SET_CONFIG_ADC_FLUSH_DATABUF 
+	key for ADC devices.
+
 2009-03-02  Simon Kallweit  <simon.kallweit@intefo.ch>
 
 	* cdl/io_adc.cdl:
diff --git a/packages/io/adc/current/src/adc.c b/packages/io/adc/current/src/adc.c
--- a/packages/io/adc/current/src/adc.c
+++ b/packages/io/adc/current/src/adc.c
@@ -298,6 +298,13 @@
         chan->device->funs->disable( chan );
         break;        
 
+    case CYG_IO_SET_CONFIG_ADC_FLUSH_DATABUF:
+        cyg_drv_isr_lock();
+        chan->put = 0;
+        chan->get = 0;
+        cyg_drv_isr_unlock();
+        break;      
+
     case CYG_IO_SET_CONFIG_READ_BLOCKING:
         if (*len < sizeof(cyg_uint32))
             return -EINVAL;
diff --git a/packages/io/common/current/ChangeLog b/packages/io/common/current/ChangeLog
--- a/packages/io/common/current/ChangeLog
+++ b/packages/io/common/current/ChangeLog
@@ -1,3 +1,8 @@
+2010-02-25  ccoutand  <ccoutand@stmi.com>
+
+	* include/config_keys.h: Add CYG_IO_SET_CONFIG_ADC_FLUSH_DATABUF 
+	key for ADC devices.
+
 2008-08-08  Nick Garnett  <nickg@ecoscentric.com>
 
 	* include/config_keys.h: Add keys for ADC devices.
diff --git a/packages/io/common/current/include/config_keys.h b/packages/io/common/current/include/config_keys.h
--- a/packages/io/common/current/include/config_keys.h
+++ b/packages/io/common/current/include/config_keys.h
@@ -159,6 +159,7 @@
 #define CYG_IO_SET_CONFIG_ADC_RATE                  0x0981
 #define CYG_IO_SET_CONFIG_ADC_ENABLE                0x0982
 #define CYG_IO_SET_CONFIG_ADC_DISABLE               0x0983
+#define CYG_IO_SET_CONFIG_ADC_FLUSH_DATABUF         0x0984
 
 // ======== 0x1000 Generic ===================================================
 // Get/Set configuration 'key' values that can apply to more than one