From 2109f7dc86b622216d3a8f869c0c5b5094ecb8c7 Mon Sep 17 00:00:00 2001
From: Oliver Hahm <oleg@hobbykeller.org>
Date: Thu, 18 Oct 2012 18:08:40 +0200
Subject: [PATCH] [core thread]

* added thread_getlastpid
---
 board/msba2-common/drivers/msba2-cc110x.c | 2 ++
 core/sched.c                              | 4 ++++
 core/thread.c                             | 5 +++++
 drivers/ltc4150.c                         | 1 -
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/board/msba2-common/drivers/msba2-cc110x.c b/board/msba2-common/drivers/msba2-cc110x.c
index 7d5a6b2196..b0a5854446 100644
--- a/board/msba2-common/drivers/msba2-cc110x.c
+++ b/board/msba2-common/drivers/msba2-cc110x.c
@@ -126,6 +126,8 @@ void cc110x_spi_init(void)
 	while( SPI_RX_AVAIL ) {						// while RNE (Receive FIFO Not Empty)...
 		dummy = SSP0DR;							// read data
 	}
+    /* to suppress unused-but-set-variable */
+    (void) dummy;
 }
 
 uint8_t cc110x_txrx(uint8_t c) {
diff --git a/core/sched.c b/core/sched.c
index 51fdaef62e..b1dc4157ba 100644
--- a/core/sched.c
+++ b/core/sched.c
@@ -31,6 +31,7 @@ volatile tcb_t *sched_threads[MAXTHREADS];
 volatile tcb_t *active_thread;
 
 volatile int thread_pid;
+volatile int last_pid = -1;
 
 clist_node_t *runqueues[SCHED_PRIO_LEVELS];
 static uint32_t runqueue_bitcache = 0;
@@ -112,6 +113,9 @@ void sched_run() {
         //                break;
         //            }
         //        }
+        if (my_active_thread->pid != last_pid) {
+            last_pid = my_active_thread->pid;
+        }
     }
 
     DEBUG("scheduler: next task: %s\n", my_active_thread->name);
diff --git a/core/thread.c b/core/thread.c
index 1a5bf82f7f..335dcf6659 100644
--- a/core/thread.c
+++ b/core/thread.c
@@ -30,6 +30,11 @@ inline int thread_getpid() {
     return active_thread->pid;
 }
 
+int thread_getlastpid() {
+    extern int last_pid;
+    return last_pid;
+}
+
 unsigned int thread_getstatus(int pid) {
     if (sched_threads[pid]==NULL)
         return STATUS_NOT_FOUND;
diff --git a/drivers/ltc4150.c b/drivers/ltc4150.c
index b68338149e..9f4134b5c9 100644
--- a/drivers/ltc4150.c
+++ b/drivers/ltc4150.c
@@ -107,7 +107,6 @@ void ltc4150_stop() {
 void __attribute__((__no_instrument_function__)) ltc4150_interrupt()
 {
     uint32_t now = hwtimer_now();
-    printf("last_int_duration %lu\n",last_int_duration);	//todo remove printf row
     if (now >= last_int_time) {
         last_int_duration = now - last_int_time;
     } else {