import ChibiOS 2.0.8

ChibiOS_2.0.8/demos/ARM7-LPC214x-G++/main.cpp

@@ -0,0 +1,189 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+                                      ---
+
+    A special exception to the GPL can be applied should you wish to distribute
+    a combined work that includes ChibiOS/RT, without being obliged to provide
+    the source code for any proprietary components. See the file exception.txt
+    for full details of how and when the exception can be applied.
+*/
+
+#include "ch.hpp"
+#include "hal.h"
+#include "test.h"
+#include "evtimer.h"
+
+#define BOTH_BUTTONS (PAL_PORT_BIT(PA_BUTTON1) | PAL_PORT_BIT(PA_BUTTON2))
+
+using namespace chibios_rt;
+
+/*
+ * LED blink sequences.
+ * NOTE: Sequences must always be terminated by a GOTO instruction.
+ * NOTE: The sequencer language could be easily improved but this is outside
+ *       the scope of this demo.
+ */
+#define SLEEP           0
+#define GOTO            1
+#define STOP            2
+#define BITCLEAR        3
+#define BITSET          4
+
+typedef struct {
+  uint8_t       action;
+  uint32_t      value;
+} seqop_t;
+
+// Flashing sequence for LED1.
+static const seqop_t LED1_sequence[] =
+{
+  {BITCLEAR, PAL_PORT_BIT(PA_LED1)},
+  {SLEEP,    200},
+  {BITSET,   PAL_PORT_BIT(PA_LED1)},
+  {SLEEP,    1800},
+  {GOTO,     0}
+};
+
+// Flashing sequence for LED2.
+static const seqop_t LED2_sequence[] =
+{
+  {SLEEP,    1000},
+  {BITCLEAR, PAL_PORT_BIT(PA_LED2)},
+  {SLEEP,    200},
+  {BITSET,   PAL_PORT_BIT(PA_LED2)},
+  {SLEEP,    1800},
+  {GOTO,     1}
+};
+
+// Flashing sequence for LED3.
+static const seqop_t LED3_sequence[] =
+{
+  {BITCLEAR, PAL_PORT_BIT(PA_LEDUSB)},
+  {SLEEP,    200},
+  {BITSET,   PAL_PORT_BIT(PA_LEDUSB)},
+  {SLEEP,    300},
+  {GOTO,     0}
+};
+
+/*
+ * Sequencer thread class. It can drive LEDs or other output pins.
+ * Any sequencer is just an instance of this class, all the details are
+ * totally encapsulated and hidden to the application level.
+ */
+class SequencerThread : public EnhancedThread<128> {
+private:
+  const seqop_t *base, *curr;                   // Thread local variables.
+
+protected:
+  virtual msg_t Main(void) {
+    while (true) {
+      switch(curr->action) {
+      case SLEEP:
+        Sleep(curr->value);
+        break;
+      case GOTO:
+        curr = &base[curr->value];
+        continue;
+      case STOP:
+        return 0;
+      case BITCLEAR:
+        palClearPort(IOPORT1, curr->value);
+        break;
+      case BITSET:
+        palSetPort(IOPORT1, curr->value);
+        break;
+      }
+      curr++;
+    }
+  }
+
+public:
+  SequencerThread(const seqop_t *sequence) : EnhancedThread<128>("sequencer") {
+
+    base = curr = sequence;
+  }
+};
+
+/*
+ * Tester thread class. This thread executes the test suite.
+ */
+class TesterThread : public EnhancedThread<128> {
+
+protected:
+  virtual msg_t Main(void) {
+
+    return TestThread(&SD1);
+  }
+
+public:
+  TesterThread(void) : EnhancedThread<128>("tester") {
+  }
+};
+
+/*
+ * Executed as an event handler at 500mS intervals.
+ */
+static void TimerHandler(eventid_t id) {
+
+  (void)id;
+  if (!(palReadPort(IOPORT1) & BOTH_BUTTONS)) { // Both buttons
+    TesterThread tester;
+    tester.Wait();
+  };
+}
+
+/*
+ * Entry point, note, the main() function is already a thread in the system
+ * on entry.
+ */
+int main(int argc, char **argv) {
+  static const evhandler_t evhndl[] = {
+    TimerHandler
+  };
+  static EvTimer evt;
+  struct EventListener el0;
+
+  (void)argc;
+  (void)argv;
+
+  /*
+   * Activates the serial driver 2 using the driver default configuration.
+   */
+  sdStart(&SD1, NULL);
+
+  evtInit(&evt, 500);                   // Initializes an event timer.
+  evtStart(&evt);                       // Starts the event timer.
+  chEvtRegister(&evt.et_es, &el0, 0);   // Registers a listener on the source.
+
+  /*
+   * Starts several instances of the SequencerThread class, each one operating
+   * on a different LED.
+   */
+  SequencerThread blinker1(LED1_sequence);
+  SequencerThread blinker2(LED2_sequence);
+  SequencerThread blinker3(LED3_sequence);
+
+  /*
+   * Serves timer events.
+   */
+  while (true)
+    Event::Dispatch(evhndl, Event::WaitOne(ALL_EVENTS));
+
+  return 0;
+}