Revision 0:9f2b4b5956c0, committed 2022-03-17

Comitter:

cspista

Date:

Thu Mar 17 13:03:30 2022 +0000

Commit message:

Final version

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Mar 17 13:03:30 2022 +0000
@@ -0,0 +1,73 @@
+#include "mbed.h"
+#include "rtos.h"
+PwmOut rled(D3);
+PwmOut gled(D5);
+PwmOut bled(D6);
+DigitalOut led_common(D4);
+
+typedef struct {
+    float red;
+    float green;
+    float blue;
+} message_t;
+
+Mail <message_t,4> mbox;                            //Mailbox for 4 messages
+
+void led_thread(void const *argument) {
+    rled.period_ms(20);                             //Set period to 20 ms
+    rled.write(1.0f);                               //Initialize to 0% duty cycle
+    gled.period_ms(20);                             //Set period to 20 ms
+    gled.write(1.0f);                               //Initialize to 0% duty cycle
+    bled.period_ms(20);                             //Set period to 20 ms
+    bled.write(1.0f);                               //Initialize to 0% duty cycle
+    while (true) {
+        osEvent evt = mbox.get();                   //Wait for a message
+        if(evt.status == osEventMail) {
+            message_t *mymessage = (message_t*)evt.value.p;
+            rled = 1.0f - mymessage->red;
+            gled = 1.0f - mymessage->green;
+            bled = 1.0f - mymessage->blue;
+            mbox.free(mymessage);                   //Free up memory
+        }
+    }
+}
+
+float frand(void) {
+    int32_t rv = 0x8000 -(rand()&0xFFFF);
+    return (rv*rv/1073741824.0f);
+}
+
+int main (void) {
+    float RGB1[3];
+    float RGB2[3];
+    float INC[3];
+    led_common = 1;         // for commono anode...
+    Thread thread2(led_thread);
+//--- Create a random color ---------------------
+    for (int x=0; x<3; x++) {
+        RGB1[x] = frand();
+    }
+
+    while (true) {
+//--- Create a new random color -----------------
+        for (int x=0; x<3; x++) {
+            RGB2[x] = frand();
+        }
+//--- Determine increments to go from color 1 to color 2 in 25 steps
+        for (int x=0; x<3; x++) {
+            INC[x] = (RGB1[x] - RGB2[x]) / 25;
+        }       
+//--- Send color codes to thread2 ---------------
+        for (int s=0; s<25; s++) {
+            message_t *message = mbox.alloc();      //Allocate memory
+            message->red = RGB1[0];
+            message->green = RGB1[1];
+            message->blue = RGB1[2];
+            mbox.put(message);                      //Send data as message
+            Thread::wait(100);
+            for (int x=0; x<3; x++) {
+                RGB1[x] -= INC[x];                  //Approach to second colour
+            }
+        }
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-rtos.lib	Thu Mar 17 13:03:30 2022 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed-rtos/#5713cbbdb706

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Mar 17 13:03:30 2022 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file