1 files changed, 103 insertions, 0 deletions

diff --git a/lib/chibios/demos/various/NIL-ARMCM4-GENERIC/main.c b/lib/chibios/demos/various/NIL-ARMCM4-GENERIC/main.c
new file mode 100644
index 000000000..c4ee399f2
--- /dev/null
+++ b/lib/chibios/demos/various/NIL-ARMCM4-GENERIC/main.c
@@ -0,0 +1,103 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include "ch.h"
+
+#if !defined(SYSTEM_CLOCK)
+#define SYSTEM_CLOCK 8000000U
+#endif
+
+/*
+ * @brief   System Timer handler.
+ */
+CH_IRQ_HANDLER(SysTick_Handler) {
+
+  CH_IRQ_PROLOGUE();
+
+  chSysLockFromISR();
+  chSysTimerHandlerI();
+  chSysUnlockFromISR();
+
+  CH_IRQ_EPILOGUE();
+}
+
+static uint32_t seconds_counter;
+static uint32_t minutes_counter;
+
+/*
+ * Seconds counter thread.
+ */
+static THD_WORKING_AREA(waThread1, 128);
+static THD_FUNCTION(Thread1, arg) {
+
+  (void)arg;
+
+  while (true) {
+    chThdSleepMilliseconds(1000);
+    seconds_counter++;
+  }
+}
+
+/*
+ * Minutes counter thread.
+ */
+static THD_WORKING_AREA(waThread2, 128);
+static THD_FUNCTION(Thread2, arg) {
+
+  (void)arg;
+
+  while (true) {
+    chThdSleepSeconds(60);
+    minutes_counter++;
+  }
+}
+
+/*
+ * Threads creation table, one entry per thread.
+ */
+THD_TABLE_BEGIN
+  THD_TABLE_THREAD(0, "counter1", waThread1, Thread1, NULL)
+  THD_TABLE_THREAD(1, "counter2", waThread2, Thread2, NULL)
+THD_TABLE_END
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+  /*
+   * Hardware initialization, in this simple demo just the systick timer is
+   * initialized.
+   */
+  SysTick->LOAD = SYSTEM_CLOCK / CH_CFG_ST_FREQUENCY - (systime_t)1;
+  SysTick->VAL = (uint32_t)0;
+  SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk |
+                  SysTick_CTRL_TICKINT_Msk;
+
+  /*
+   * System initializations.
+   * - Kernel initialization, the main() function becomes a thread and the
+   *   RTOS is active.
+   */
+  chSysInit();
+
+  /* This is now the idle thread loop, you may perform here a low priority
+     task but you must never try to sleep or wait in this loop. Note that
+     this tasks runs at the lowest priority level so any instruction added
+     here will be executed after all other tasks have been started.*/
+  while (true) {
+  }
+}