diff options
Diffstat (limited to 'demos/ARM7-LPC214x-G++/main.cpp')
| -rw-r--r-- | demos/ARM7-LPC214x-G++/main.cpp | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/demos/ARM7-LPC214x-G++/main.cpp b/demos/ARM7-LPC214x-G++/main.cpp index 1d8acfb5e..39b31e89a 100644 --- a/demos/ARM7-LPC214x-G++/main.cpp +++ b/demos/ARM7-LPC214x-G++/main.cpp @@ -28,7 +28,8 @@ using namespace chibios_rt;
/*
- * LED blinking sequences.
+ * LED blink sequences.
+ * NOTE: Sequences must always be terminated by a GOTO instruction.
*/
#define SLEEP 0
#define GOTO 1
@@ -39,9 +40,9 @@ using namespace chibios_rt; typedef struct {
uint8_t action;
uint32_t value;
-} bitop_t;
+} seqop_t;
-bitop_t LED1_sequence[] =
+static const seqop_t LED1_sequence[] =
{
{BITCLEAR, 0x00000400},
{SLEEP, 200},
@@ -50,7 +51,7 @@ bitop_t LED1_sequence[] = {GOTO, 0}
};
-bitop_t LED2_sequence[] =
+static const seqop_t LED2_sequence[] =
{
{SLEEP, 1000},
{BITCLEAR, 0x00000800},
@@ -60,7 +61,7 @@ bitop_t LED2_sequence[] = {GOTO, 1}
};
-bitop_t LED3_sequence[] =
+static const seqop_t LED3_sequence[] =
{
{BITCLEAR, 0x80000000},
{SLEEP, 200},
@@ -70,14 +71,16 @@ bitop_t LED3_sequence[] = };
/**
- * Blinker thread class. It can drive LEDs or other output pins.
+ * Sequencer thread class. It can drive LEDs or other output pins.
*/
-class BlinkerThread : BaseThread {
+class SequencerThread : BaseThread {
private:
- WorkingArea(wa, 64);
- bitop_t *base, *curr, *top;
+
+ WorkingArea(wa, 64); // Thread working area.
+ const seqop_t *base, *curr; // Thread local variables.
protected:
+
virtual msg_t Main(void) {
while (TRUE) {
@@ -102,7 +105,7 @@ protected: }
public:
- BlinkerThread(bitop_t *sequence) : BaseThread(NORMALPRIO, 0, wa, sizeof wa) {
+ SequencerThread(const seqop_t *sequence) : BaseThread(NORMALPRIO, 0, wa, sizeof wa) {
base = curr = sequence;
}
@@ -127,19 +130,19 @@ int main(int argc, char **argv) { static EvTimer evt;
struct EventListener el0;
- System::Init();
+ System::Init(); // ChibiOS/RT goes live here.
- evtInit(&evt, 500); /* Initializes an event timer object. */
- evtStart(&evt); /* Starts the event timer. */
- chEvtRegister(&evt.et_es, &el0, 0); /* Registers on the timer event source. */
+ evtInit(&evt, 500); // Initializes an event timer object.
+ evtStart(&evt); // Starts the event timer.
+ chEvtRegister(&evt.et_es, &el0, 0); // Registers on the timer event source.
/*
- * Starts serveral instances of the BlinkerThread class, each one operating
+ * Starts serveral instances of the SequencerThread class, each one operating
* on a different LED.
*/
- BlinkerThread blinker1(LED1_sequence);
- BlinkerThread blinker2(LED2_sequence);
- BlinkerThread blinker3(LED3_sequence);
+ SequencerThread blinker1(LED1_sequence);
+ SequencerThread blinker2(LED2_sequence);
+ SequencerThread blinker3(LED3_sequence);
/*
* Serves timer events.
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