main.cpp

00001 /**
00002  * My custom Xively code. This program will use most of the peripherals
00003  * on the board. If you need anything else let me know and I can probably
00004  * make some task for it to do.
00005  *
00006  * Eric Fossum
00007  */
00008 #include "mbed.h"
00009 #include "MMA7660.h"
00010 #include "PinDetect.h"
00011 #include "rtos.h"
00012 #include "ST7565R.h"
00013 #include "tricolor.h"
00014 
00015 /// Updates the potentiometers and prints their values to the LCD
00016 void pot_update(void const *args);
00017 /// Updates the devices on the I2C bus and prints their values to the LCD
00018 void i2c_update(void const *args);
00019 /// Function call for when down on the joystick is pressed
00020 void down();
00021 /// Function call for when left on the joystick is pressed
00022 void left();
00023 /// Function call for when the joystick is clicked
00024 void click();
00025 /// Function call for when up on the joystick is pressed
00026 void up();
00027 /// Function call for when right on the joystick is pressed
00028 void right();
00029 
00030 Serial pc(USBTX, USBRX);
00031 ST7565R lcd(p11, p8, p7, p5, p6, false);
00032 Tricolor led(p23, p24, p25);
00033 I2C i2c(p28, p27);
00034 MMA7660 accl(p28, p27);
00035 
00036 const int temp_addr = 0x90;
00037 
00038 Mutex lcd_mutex;
00039 
00040 AnalogIn pot1(p19);
00041 AnalogIn pot2(p20);
00042 
00043 DigitalOut led1(LED1);
00044 DigitalOut led2(LED2);
00045 DigitalOut led3(LED3);
00046 DigitalOut led4(LED4);
00047 
00048 PinDetect joy_down(p12);
00049 PinDetect joy_left(p13);
00050 PinDetect joy_click(p14);
00051 PinDetect joy_up(p15);
00052 PinDetect joy_right(p16);
00053 
00054 /** Main
00055  * Sets up the hardware and threads, then toggles the LED every half a second.
00056  */
00057 int main() {
00058     joy_left.mode(PullDown);
00059     joy_right.mode(PullDown);
00060     joy_click.mode(PullDown);
00061     joy_up.mode(PullDown);
00062     joy_down.mode(PullDown);
00063     
00064     joy_left.attach_asserted(&left);
00065     joy_right.attach_asserted(&right);
00066     joy_click.attach_asserted(&click);
00067     joy_up.attach_asserted(&up);
00068     joy_down.attach_asserted(&down);
00069     
00070     wait(0.2);
00071     
00072     joy_left.setSampleFrequency();
00073     joy_right.setSampleFrequency();
00074     joy_click.setSampleFrequency();
00075     joy_up.setSampleFrequency();
00076     joy_down.setSampleFrequency();
00077     
00078     led.SetLEDColor(0, 60, 0);
00079     
00080     pc.printf("Debug out\n");
00081     
00082     lcd.moveto(0,0);
00083     lcd.printf("Custom Xively!");
00084     // Create Tasks - task, argument, priority, stack, stk_ptr
00085     Thread pot_thread(pot_update);
00086     Thread i2c_thread(i2c_update);
00087     
00088     while(1) {
00089         wait(0.5);
00090         led.Toggle();
00091     }
00092 }
00093 
00094 void pot_update(void const *args) {
00095     char str[lcd.columns()+1];
00096     
00097     while(true) {
00098         lcd_mutex.lock();
00099         lcd.moveto(0,1);
00100         sprintf(str, "Pot1: %00.2f Pot2: %00.2f", pot1.read(), pot2.read());
00101         lcd.printf(str);
00102         lcd_mutex.unlock();
00103     }
00104 }
00105 
00106 void i2c_update(void const *args) {
00107     char str[lcd.columns()+1];
00108     char cmd[2];
00109     float temp;
00110     
00111     while(true) {
00112         // Temp Sensor
00113         cmd[0] = 0x01;
00114         cmd[1] = 0x00;
00115         i2c.write(temp_addr, cmd, 2);
00116         wait(0.5);
00117         cmd[0] = 0x00;
00118         i2c.write(temp_addr, cmd, 1);
00119         i2c.read(temp_addr, cmd, 2);
00120         temp = ((float((cmd[0]<<8)|cmd[1]) / 256.0)*1.8) + 32;
00121 
00122         lcd_mutex.lock();
00123         lcd.moveto(0,2);
00124         sprintf(str, "Temp: %2.1f, Z: % 2.1f", temp, lcd.rows());
00125         lcd.printf(str);
00126         
00127         // Accelerometer
00128         lcd.moveto(0,3);
00129         sprintf(str, "X: % 2.1f Y: % 2.1f", accl.x(), accl.y());
00130         lcd.printf(str);
00131         lcd_mutex.unlock();
00132     }
00133 }
00134 
00135 void down() {
00136     led3 = !led3;
00137 }
00138 
00139 void left() {
00140     led1 = !led1;
00141 }
00142 
00143 void click() {
00144     led1 = !led1;
00145     led2 = !led2;
00146     led3 = !led3;
00147     led4 = !led4;
00148 }
00149 
00150 void up() {
00151     led2 = !led2;
00152 }
00153 
00154 void right() {
00155     led4 = !led4;
00156 }