Carden Bagwell
library for controlling tv remote with gestures
Dependencies: HCSR04 SI1143 command mbed-rtos mbed
Revision 0:35878487eafe, committed 2015-12-08
- Comitter:
- cardenb
- Date:
- Tue Dec 08 03:10:08 2015 +0000
- Commit message:
- library for controlling tv remote with mbed and gesture sensors
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HCSR04.lib Tue Dec 08 03:10:08 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/prabhuvd/code/HCSR04/#71da0dbf4400
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SI1143.lib Tue Dec 08 03:10:08 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/GAT27/code/SI1143/#50b60d59d568
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/command.lib Tue Dec 08 03:10:08 2015 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/cardenb/code/command/#19b95e12c3ab
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Dec 08 03:10:08 2015 +0000
@@ -0,0 +1,221 @@
+#define DIST_MAX 40 // Maximum distance in cm, anything above is ignored.
+// Threshold for up/down commands.
+// If higher, command is "up". If lower, "down".
+#define DIST_THRES 20
+
+#include "mbed.h"
+#include "rtos.h"
+#include "hcsr04.h"
+#include "SI1143.h"
+#include "command.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+HCSR04 usensor(p7, p6);
+SI1143 sensor(p28, p27);
+
+DigitalOut l1(LED1);
+DigitalOut l2(LED2);
+DigitalOut l3(LED3);
+DigitalOut l4(LED4);
+
+int value;
+
+unsigned int dist;
+int sense1, sense2, sense3;
+
+const float period = 1.0;
+const float power_execute_count = 3.0 / period;
+float power_count = 0;
+Mutex led_mut;
+Mutex ir_mut;
+
+bool flag = false;
+
+const int num_commands = 5;
+enum COMMANDS {
+ POWER_COM,
+ CHANNEL_UP,
+ CHANNEL_DOWN,
+ VOLUME_UP,
+ VOLUME_DOWN,
+ NONE,
+};
+const string com_names[num_commands] = {"power", "channel up", "channel down",
+ "volume up", "volume down"};
+
+Command coms[num_commands];
+
+Ticker power_ticker;
+enum MODE {
+ NO_MODE = 0,
+ CHANNEL = 1,
+ POWER = 2,
+ VOLUME = 3,
+
+};
+
+enum DIRECTION {
+ NO_DIR,
+ UP,
+ DOWN,
+};
+DIRECTION dir = NO_DIR;
+MODE mode = NO_MODE;
+
+void set_led(uint8_t led_vals) {
+ led_mut.lock();
+ l1 = led_vals & 1;
+ led_vals = led_vals >> 1;
+ l2 = led_vals & 1;
+ led_vals = led_vals >> 1;
+ l3 = led_vals & 1;
+ led_vals = led_vals >> 1;
+ l4 = led_vals & 1;
+ led_mut.unlock();
+}
+
+void ExecutePowerCommand() {
+ ir_mut.lock();
+ coms[POWER_COM].TransmitCommand();
+ ir_mut.unlock();
+ mode = NO_MODE;
+}
+
+void CheckForPower() {
+ if (mode == POWER) {
+ if (power_count == power_execute_count) {
+ ExecutePowerCommand();
+ }
+ ++power_count;
+ } else {
+ power_count = 0;
+ set_led(0);
+ }
+}
+
+int handleDist(int dist) {
+ if (dist > DIST_THRES) {
+ return 1;
+ } else {
+ return -1;
+ }
+}
+
+void parallax_thread(void const *args) {
+ int sen = 50;
+ while (true) {
+ sense1 = sensor.get_ps1(1);
+ sense2 = sensor.get_ps2(1);
+ sense3 = sensor.get_ps3(1);
+
+
+ if (sense1 > sen || sense2 > sen || sense3 > sen) {
+ if (sense1 > sense2 && sense1 > sense3) {
+ set_led(1);
+ mode = CHANNEL;
+ }
+
+ else if (sense2 > sense1 && sense2 > sense3) {
+ mode = POWER;
+ set_led(3);
+ }
+
+ else if (sense3 > sense1 && sense3 > sense2) {
+ set_led(2);
+ mode = VOLUME;
+ }
+ } else {
+ if( mode == POWER) {
+ mode = NO_MODE;
+ }
+ }
+ Thread::wait(300);
+ }
+}
+
+void ultrasound_thread(void const *args) {
+ while (true) {
+ usensor.start();
+ dist = usensor.get_dist_cm();
+ if (dist < DIST_MAX) {
+ int d = 500; // first delay is longer for single volume change
+
+ while (dist < DIST_MAX) {
+ value = handleDist(dist); // is up or down?
+ // doIR(CONTROL_VOL, value); // fire off IR signal
+ if (value == 1) {
+ set_led(8);
+ dir = UP;
+ Thread::wait(100);
+ set_led(0);
+ } else {
+ set_led(4);
+ dir = DOWN;
+ Thread::wait(100);
+ set_led(0);
+ }
+ usensor.start();
+ Thread::wait(d); // wait
+ dist = usensor.get_dist_cm(); // check for hand again
+ d = 100; // delays are shorter for quick multiple volume adjustment
+ }
+ // this stops accidental channel change after volume adjustment
+ Thread::wait(500);
+ } else {
+ dir = NO_DIR;
+ }
+ Thread::wait(50); // Short enough to detect all swipes.
+ }
+}
+
+void transmit_thread(const void* args) {
+ while(true) {
+ COMMANDS com = NONE;
+ if(mode == VOLUME && dir == UP) {
+ com = VOLUME_UP;
+ } else if(mode == VOLUME && dir == DOWN) {
+ com = VOLUME_DOWN;
+ } else if(mode == CHANNEL && dir == UP) {
+ com = CHANNEL_UP;
+ } else if(mode == CHANNEL && dir == DOWN) {
+ com = CHANNEL_DOWN;
+ } else {
+ com = NONE;
+ }
+ if(com != NONE) {
+ ir_mut.lock();
+ coms[com].TransmitCommand();
+ ir_mut.unlock();
+ }
+ Thread::wait(10);
+ }
+}
+
+void setup(void) {
+ // Serial.begin(9600);
+ // device.baud(2400);
+ pc.printf("Ready to decode IR!\r\n");
+
+ for( int i = 0; i < num_commands; ++i) {
+ coms[i] = Command(com_names[i]);
+ coms[i].LearnCommand(pc);
+ }
+ // Setup the baseline
+ sensor.bias(1, 5);
+ wait(1);
+}
+
+int main() {
+
+ setup();
+ power_ticker.attach(&CheckForPower, period);
+ set_led(0);
+
+ Thread mode_checker(parallax_thread);
+ Thread range_checker(ultrasound_thread);
+ Thread transmit_checker(transmit_thread);
+
+ while (1) {
+ // spin.
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Tue Dec 08 03:10:08 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#c825593ece39
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Dec 08 03:10:08 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/165afa46840b \ No newline at end of file