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For triple beacon
Fork of Programmable_IR_Beacon by
Diff: main.cpp
- Revision:
- 0:d88fd55a27a6
- Child:
- 1:7093cc21a293
diff -r 000000000000 -r d88fd55a27a6 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Wed Mar 19 15:09:11 2014 +0000 @@ -0,0 +1,337 @@ +/* University of York Robot Lab + * + * Programmable IR Beacon with Display Example Code + * + * This file is intended for use exclusively with the high-power IR Beacon with display + * + * + * + * (C) Dr James Hilder, Dept. Electronics & Computer Science, University of York + * + * March 2014 + * + */ + +#include "mbed.h" +#include "display.h" //Display driver for the Midas 16x2 I2C Display + +DigitalIn button1(p23); //"SET" Push-button +DigitalIn button2(p24); //"SELECT" Push-button +PwmOut out_narrow(p21); //PWM Output for the narrow (high intensity) LED driver +PwmOut out_wide(p22); //PWM Output for the wide-angle LED driver + +Display display; +Timer system_timer; //System timer is used for timer the on-off periods for the LEDs +Timer button_timer; //Button timer is used for debouncing the push buttons and pausing for entering 'SET' mode + +char adjust = 0; +char mode = 0; +char power = 1; +char duty = 2; +char frequency = 2; + +int on_period; +int off_period; +int total_period; +char phase; + +int get_period() +{ + switch(frequency) { + case 0: + return 1000000; + case 1: + return 500000; + case 2: + return 200000; + case 3: + return 100000; + case 4: + return 50000; + case 5: + return 33333; + case 6: + return 25000; + case 7: + return 20000; + } + return 0; +} + +void update_cycles() +{ + total_period = get_period(); + switch(duty){ + case 0: on_period=total_period/10;break; + case 1: on_period=total_period/4;break; + case 2: on_period=total_period/2;break; + case 3: on_period=(total_period*3)/4;break; + case 4: on_period=total_period-(total_period/10);break; + } + off_period = total_period - on_period; + phase = 0; + system_timer.reset(); +} + +void init() +{ + display.init_display(); + display.set_position(0,2); + display.write_string("YORK ROBOTICS",13); + display.set_position(1,3); + display.write_string("LABORATORY",10); + wait(0.45); + display.clear_display(); + display.set_position(0,2); + display.write_string("Programmable",12); + display.set_position(1,3); + display.write_string("IR Beacon",9); + wait(0.45); +} + +char * mode_string() +{ + switch(mode) { + case 1: + return "WIDE "; + case 2: + return "NARROW"; + } + return "BOTH "; +} + +char * duty_string() +{ + switch(duty) { + case 0: + return " 10%"; + case 1: + return " 25%"; + case 2: + return " 50%"; + case 3: + return " 75%"; + case 4: + return " 90%"; + } + return"???"; +} + +char * power_string() +{ + switch(power) { + case 0: + return " 25%"; + case 1: + return " 50%"; + case 2: + return " 75%"; + case 3: + return "100%"; + } + return"????"; +} + +char * freq_string() +{ + switch(frequency) { + case 0: + return " 1Hz"; + case 1: + return " 2Hz"; + case 2: + return " 5Hz"; + case 3: + return "10Hz"; + case 4: + return "20Hz"; + case 5: + return "30Hz"; + case 6: + return "40Hz"; + case 7: + return "50Hz"; + } + return "????"; +} + +// The normal mode display output: shows the frequency, power, duty-cycle and output mode (ie wide, narrow or both) +void display_status() +{ + display.clear_display(); + display.set_position(0,0); + char line1[15] ; + strcpy(line1, "F:"); + strcat(line1, freq_string()); + strcat(line1, " P:"); + strcat(line1, power_string()); + display.write_string(line1,13); + char line2[17]; + strcpy(line2, "D:"); + strcat(line2, duty_string()); + strcat(line2, " M:"); + strcat(line2, mode_string()); + display.set_position(1,0); + display.write_string(line2,16); +} + +// The configuration mode; entered by holding the 'set' button for one second. In this mode the user can through the options +// by pressing 'set' and change a setting by pressing 'select'. The final screen in the loop allows the user to return to +// normal operation, this will also happen with no user input for 5 seconds. +void change_settings() +{ + //Switch off LEDs whilst in configuration mode + out_wide.pulsewidth_us(0); + out_narrow.pulsewidth_us(0); + display.clear_display(); + display.set_position(0,0); + display.write_string("CONFIGURATION",13); + display.set_position(1,0); + display.write_string("MODE",4); + while(button1 == 1); + char screen = 0; + char active = 1; + Timer settings_timer; + settings_timer.start(); + while(active) { + display.clear_display(); + display.set_position(0,0); + char line2[17]; + switch(screen) { + case 0: + display.write_string("Set Frequency:",14); + display.set_position(1,0); + strcpy(line2,freq_string()); + display.write_string(line2,4); + break; + case 1: + display.write_string("Set Power: ",14); + display.set_position(1,0); + strcpy(line2,power_string()); + display.write_string(line2,4); + break; + case 2: + display.write_string("Set Duty Cycle:",15); + display.set_position(1,0); + strcpy(line2,duty_string()); + display.write_string(line2,4); + break; + case 3: + display.write_string("Set Mode: ",14); + display.set_position(1,0); + strcpy(line2,mode_string()); + display.write_string(line2,6); + break; + case 4: + display.write_string("End Setup",9); + break; + } + char button_pressed = 0; + + while(button_pressed < 2 && settings_timer.read_ms() < 5000){ + if(button1 == 1 || button2 == 1){ + if(button_pressed == 1){ + if(button_timer.read_ms() > 50) button_pressed = 2; + } else {button_pressed = 1; button_timer.reset();} + } else button_pressed = 0; + } + if(button1==1){ + screen++; + if(screen == 5)screen=0; + while(button1 == 1); + }else{ + if(button2==1){ + switch(screen){ + case 0: frequency ++; + if(frequency == 8) frequency = 0; + break; + case 1: power++; + if(power == 4) power=0; + break; + case 2: duty++; + if(duty == 5) duty=0; + break; + case 3: mode++; + if(mode == 3) mode = 0; + break; + case 4: active=0; break; + } + while(button2 == 1); + } + } + if(settings_timer > 5000) active=0; + settings_timer.reset(); + } +} + +int main() +{ + init(); + display_status(); + char b_p = 0; + system_timer.start(); + button_timer.start(); + update_cycles(); + out_narrow.period_us(1000); + out_wide.period_us(1000); + out_narrow.pulsewidth_us(0); + out_wide.pulsewidth_us(0); + + + while(1) { + if(phase==0){ + if(system_timer.read_us() > off_period){ + system_timer.reset(); + int pw = 250; + if(power==1) pw=500; + if(power==2) pw=750; + if(power==3) pw=1000; + if(mode<2){ + out_wide.pulsewidth_us(pw); + } + if(mode!=1){ + out_narrow.pulsewidth_us(pw); + } + phase = 1; + } + }else{ + if(system_timer.read_us() > on_period){ + system_timer.reset(); + phase = 0; + out_wide.pulsewidth_us(0); + out_narrow.pulsewidth_us(0); + } + } + + + if(button1 == 1) { + if(b_p == 0) { + b_p=1; + button_timer.reset(); + } + if(b_p == 1) { + if(button_timer.read_ms() > 100) { + b_p=2; + display.clear_display(); + display.set_position(0,0); + display.write_string("Hold to change",14); + display.set_position(1,0); + display.write_string("settings",8); + } + } + if(b_p == 2) { + if(button_timer.read_ms() > 1000) { + change_settings(); + update_cycles(); + display_status(); + b_p=0; + } + } + } else { + if (b_p > 0) { + if(b_p == 2) display_status(); + b_p=0; + } + } + } +} \ No newline at end of file