Kyle Price
My take on the obligatory Hello World app for the FRD-KL25Z platform. This app shows off some of the onboard peripherals. I have commented a chunk of the code, and will work to revise this to add more commenting of all sub-routines.
Dependencies: FRDM_MMA8451Q TSI mbed
Diff: main.cpp
- Revision:
- 0:216148fa726d
- Child:
- 1:6a1079e4e6ab
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jun 26 15:11:39 2014 +0000
@@ -0,0 +1,321 @@
+#include "mbed.h"
+#include "TSISensor.h"
+#include "MMA8451Q.h"
+
+
+// This is the default address as specified by the mfg
+#define MMA8451_I2C_ADDRESS (0x1d<<1)
+
+
+PwmOut myRedLed(LED1);
+PwmOut myGreenLed(LED2);
+PwmOut myBlueLed(LED3);
+PwmOut externalLight(D0);
+
+MMA8451Q accel(PTE25, PTE24, MMA8451_I2C_ADDRESS); // 3-axis MEMS accelerometer.
+TSISensor touchSlider; // Capacitive touch sensor, defined as touchSlider.
+
+//Function forward declarations
+void AccelDemo();
+void SliderFadeTimeDemo();
+void TouchFadeIn(float val);
+void TouchFadeOut(float val);
+
+//
+// The following prototypes are all related to the morse code blinking.
+//
+void morseCodeBlinker(char input[], float speed);
+void SendLetter(char input, float speed);
+void WordSpace(float speed);
+void LetterSpace(float speed);
+void Dash(float speed);
+void Dot(float speed);
+
+
+//Main constructor
+int main()
+{
+ // Blink the LED's to morse code "HELLO WORLD"
+ morseCodeBlinker("How are you", 0.25f);
+
+
+ while (1)
+ {
+ // In the infinite loop of Main, we check to see if the touch slider is being touched
+ // and if it is we call the touch slider demo function
+ // if it is not we will be performing the accelerometer demo function
+ if (touchSlider.readDistance() > 1)
+ {
+ SliderFadeTimeDemo();
+ }
+ else
+ {
+ AccelDemo();
+ }
+ }
+
+}
+
+
+
+void SliderFadeTimeDemo()
+{
+ float val = 0.00f;
+
+ if (touchSlider.readDistance() > 2)
+ {
+ val = touchSlider.readDistance() * 0.5f;
+ TouchFadeIn(val);
+ TouchFadeOut(val);
+ }
+ else
+ {
+ if (val > 4)
+ {
+ TouchFadeIn(val);
+ TouchFadeOut(val);
+ }
+ else
+ {
+ myRedLed = 1.00f;
+ myGreenLed = 1.00f;
+ myBlueLed = 1.00f;
+ }
+ }
+}
+
+
+void TouchFadeIn(float val)
+{
+ for (float i = 1.00f; i > 0.00f; i -= 0.01f)
+ {
+ myRedLed = i;
+ myGreenLed = i;
+ myBlueLed = i;
+ externalLight = i;
+ wait_ms(val);
+ }
+}
+
+
+void TouchFadeOut(float val)
+{
+ for (float i = 0.00f; i < 1.00f; i += 0.01f)
+ {
+ myRedLed = i;
+ myGreenLed = i;
+ myBlueLed = i;
+ externalLight = i;
+ wait_ms(val);
+ }
+}
+
+
+
+void AccelDemo()
+{
+ float xAxisData = 1 - abs(accel.getAccX());
+ float yAxisData = 1 - abs(accel.getAccY());
+ float zAxisData = 1 - abs(accel.getAccZ());
+
+ myGreenLed = xAxisData;
+ myRedLed = yAxisData;
+ myBlueLed = zAxisData;
+
+ wait_ms(100);
+}
+
+
+void morseCodeBlinker(char input[], float speed)
+{
+ for (unsigned int i = 0; i < sizeof(input); i++)
+ {
+ if (input[i] == ' ')
+ {
+ WordSpace(speed);
+ }
+ else
+ {
+ SendLetter(input[i], speed);
+ LetterSpace(speed);
+ }
+ }
+}
+
+
+void SendLetter(char input, float speed)
+{
+ char lowerCaseLetter = tolower(input);
+
+ switch (lowerCaseLetter)
+ {
+ case 'a' :
+ Dot(speed);
+ Dash(speed);
+ break;
+ case 'b' :
+ Dash(speed);
+ Dot(speed);
+ Dot(speed);
+ Dot(speed);
+ break;
+ case 'c' :
+ Dash(speed);
+ Dot(speed);
+ Dash(speed);
+ Dot(speed);
+ break;
+ case 'd' :
+ Dash(speed);
+ Dot(speed);
+ Dot(speed);
+ break;
+ case 'e' :
+ Dot(speed);
+ break;
+ case 'f' :
+ Dot(speed);
+ Dot(speed);
+ Dash(speed);
+ Dot(speed);
+ break;
+ case 'g' :
+ Dash(speed);
+ Dash(speed);
+ Dot(speed);
+ break;
+ case 'h' :
+ Dot(speed);
+ Dot(speed);
+ Dot(speed);
+ Dot(speed);
+ break;
+ case 'i' :
+ Dot(speed);
+ Dot(speed);
+ break;
+ case 'j' :
+ Dot(speed);
+ Dash(speed);
+ Dash(speed);
+ Dash(speed);
+ break;
+ case 'k' :
+ Dash(speed);
+ Dot(speed);
+ Dash(speed);
+ break;
+ case 'l' :
+ Dot(speed);
+ Dash(speed);
+ Dot(speed);
+ Dot(speed);
+ break;
+ case 'm' :
+ Dash(speed);
+ Dash(speed);
+ break;
+ case 'n' :
+ Dash(speed);
+ Dot(speed);
+ break;
+ case 'o' :
+ Dash(speed);
+ Dash(speed);
+ Dash(speed);
+ break;
+ case 'p' :
+ Dot(speed);
+ Dash(speed);
+ Dash(speed);
+ Dot(speed);
+ break;
+ case 'q' :
+ Dash(speed);
+ Dash(speed);
+ Dot(speed);
+ Dash(speed);
+ break;
+ case 'r' :
+ Dot(speed);
+ Dash(speed);
+ Dot(speed);
+ break;
+ case 's' :
+ Dot(speed);
+ Dot(speed);
+ Dot(speed);
+ break;
+ case 't' :
+ Dash(speed);
+ break;
+ case 'u' :
+ Dot(speed);
+ Dot(speed);
+ Dash(speed);
+ break;
+ case 'v' :
+ Dot(speed);
+ Dot(speed);
+ Dot(speed);
+ Dash(speed);
+ break;
+ case 'w' :
+ Dot(speed);
+ Dash(speed);
+ Dash(speed);
+ break;
+ case 'x' :
+ Dash(speed);
+ Dot(speed);
+ Dot(speed);
+ Dash(speed);
+ break;
+ case 'y' :
+ Dash(speed);
+ Dot(speed);
+ Dash(speed);
+ Dash(speed);
+ break;
+ case 'z' :
+ Dash(speed);
+ Dash(speed);
+ Dot(speed);
+ Dot(speed);
+ break;
+ }
+}
+
+void WordSpace(float speed)
+{
+ wait(speed * 7);
+}
+
+void LetterSpace(float speed)
+{
+ wait(speed * 3);
+}
+
+void Dash(float speed)
+{
+ myRedLed = 0;
+ myGreenLed = 0;
+ myBlueLed = 0;
+ wait(speed * 3);
+ myRedLed = 1;
+ myGreenLed = 1;
+ myBlueLed = 1;
+ wait(speed);
+}
+
+void Dot(float speed)
+{
+ myRedLed = 0;
+ myGreenLed = 0;
+ myBlueLed = 0;
+ wait(speed);
+ myRedLed = 1;
+ myGreenLed = 1;
+ myBlueLed = 1;
+ wait(speed);
+}
\ No newline at end of file