Add 07_multithread_rr and 08_thread_control_apis

apps/07_multithread_rr/CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(07_multithread_rr)
+
+target_sources(app PRIVATE src/main.c)

apps/07_multithread_rr/prj.conf

@@ -0,0 +1,12 @@
+CONFIG_SERIAL=y
+CONFIG_CONSOLE=y
+CONFIG_PRINTK=y
+
+# Enable zephyr timeslicing
+CONFIG_TIMESLICING=y
+
+# Set the timeslice lenght in milliseconds
+CONFIG_TIMESLICE_SIZE=10
+
+# Timeslicing only applies to threads whose priority is numerically >= this value(e.g. 0)
+CONFIG_TIMESLICE_PRIORITY=0

apps/07_multithread_rr/src/main.c

@@ -0,0 +1,66 @@
+#include <zephyr/kernel.h>
+#include <zephyr/sys/printk.h>
+
+// Define stack size in bytes
+#define THREAD_1_STACK_SZ    1024
+#define THREAD_2_STACK_SZ    1024
+
+// Define priority, lower number = higher prio
+#define THREAD_1_PRIORITY    5
+#define THREAD_2_PRIORITY    5
+
+static void thread_1_function(void *p1, void *p2, void *p3) {
+    ARG_UNUSED(p1);
+    ARG_UNUSED(p1);
+    ARG_UNUSED(p1);
+    printk("\r\n---------------[RTOS THREAD] Project----------------\r\n");
+    while(1) {
+        printk("Hello from Thread 1 \r\n");
+        k_msleep(50);
+    }
+}
+
+static void thread_2_function(void *p1, void *p2, void *p3) {
+    ARG_UNUSED(p1);
+    ARG_UNUSED(p1);
+    ARG_UNUSED(p1);
+    printk("\r\n---------------[RTOS THREAD] Project----------------\r\n");
+    while(1) {
+        printk("Hello from Thread 2 \r\n");
+        k_msleep(50);
+    }
+}
+
+// Statically create the thread and auto-start
+K_THREAD_DEFINE(
+    thread_1_tid,       // Symbolic thread identifier
+    THREAD_1_STACK_SZ,
+    thread_1_function,
+    NULL,
+    NULL,
+    NULL,
+    THREAD_1_PRIORITY,
+    0,
+    0                   // Start immediately at boot
+);
+
+// Statically create the thread and auto-start
+K_THREAD_DEFINE(
+    thread_2_tid,       // Symbolic thread identifier
+    THREAD_2_STACK_SZ,
+    thread_2_function,
+    NULL,
+    NULL,
+    NULL,
+    THREAD_2_PRIORITY,
+    0,
+    0                   // Start immediately at boot
+);
+
+int main(void) {
+    printk("\r\n----- Main Function -----\r\n");
+    while(1){
+        k_sleep(K_FOREVER);
+    }
+    return 0;
+}