Arcadie Cracan
Audio demo
Revision 0:ed8de6dbc531, committed 2015-07-11
- Comitter:
- acracan
- Date:
- Sat Jul 11 11:20:10 2015 +0000
- Commit message:
- First commit.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Jul 11 11:20:10 2015 +0000
@@ -0,0 +1,71 @@
+#include "mbed.h"
+#include "tsi_sensor.h"
+
+/* This defines will be replaced by PinNames soon */
+#if defined (TARGET_KL25Z) || defined (TARGET_KL46Z)
+ #define ELEC0 9
+ #define ELEC1 10
+#elif defined (TARGET_KL05Z)
+ #define ELEC0 9
+ #define ELEC1 8
+#else
+ #error TARGET NOT DEFINED
+#endif
+Serial pc(USBTX, USBRX);
+AnalogOut DAC(PTE30);
+//global variables used by interrupt routine
+const int SAMPLE_COUNT = 128;
+float samples[SAMPLE_COUNT];
+int sampleIdx = 0;
+float period = 1.0e-3f;
+Timer sensorTimer;
+PwmOut player(PTE31);
+TSIAnalogSlider tsi(ELEC0, ELEC1, 40);
+float sliderValue = 0.0;
+bool active = false;
+
+void computeSamples();
+void writeSample();
+
+int main(void) {
+ DAC = 0.0f;
+ computeSamples();
+ pc.printf("Hello World\n");
+ player.period(period);
+ player = 0.5f;
+ TPM0->SC |= TPM_SC_TOIE_MASK;
+ NVIC_SetVector(TPM0_IRQn, (uint32_t)&writeSample);
+ NVIC_EnableIRQ(TPM0_IRQn);
+
+ sensorTimer.start();
+ writeSample();
+ pc.printf("Hello again\n");
+ while (true) {
+ if (sensorTimer.read() > 100.0e-3f) {
+ sliderValue = tsi.readPercentage();
+ active = sliderValue > 0.0f ? true : false;
+ period = pow(10.0f, 0.5f * (1.0f - sliderValue)) * 7.0e-6f;
+ player.period(period);
+ sensorTimer.reset();
+ }
+ }
+}
+
+void computeSamples()
+{
+ for(int k = 0; k < SAMPLE_COUNT; k++) {
+ samples[k]=(1.0f + sin(float(k) / float(SAMPLE_COUNT) * 6.283185f)) * 0.5f;
+ }
+}
+
+void writeSample()
+{
+ if (active) {
+ sampleIdx = (sampleIdx + 1) % SAMPLE_COUNT;
+ DAC = samples[sampleIdx];
+ }
+ else {
+ DAC = 0.5f;
+ }
+ TPM0->SC |= TPM_SC_TOF_MASK;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat Jul 11 11:20:10 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/da0ca467f8b5 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tsi_sensor.lib Sat Jul 11 11:20:10 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/Kojto/code/tsi_sensor/#976904559b5c