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1 | /* | |
2 | Copyright 2012 D Westaby | |
3 | ||
4 | ---------------------------------------------------------------------- | |
5 | Car Lights for Attiny2313 | |
6 | ---------------------------------------------------------------------- | |
7 | - | Title: Car_Lighting.c |
7 | + | Title: Car_Lighting.D |
8 | Author: Dustin Westaby | |
9 | Date Created: September 8, 2012 | |
10 | - | Date Modified: September 21, 2012 |
10 | + | Date Modified: September 23, 2012 |
11 | ||
12 | Compiled with AVR-GCC WinAVR | |
13 | ||
14 | ---------------------------------------------------------------------- | |
15 | Fuses: | |
16 | ---------------------------------------------------------------------- | |
17 | BrownOut Disabled | |
18 | CKDIV8 | |
19 | Int RC Osc 8Mhz + 64ms | |
20 | ||
21 | ---------------------------------------------------------------------- | |
22 | Inputs: | |
23 | ---------------------------------------------------------------------- | |
24 | None | |
25 | ||
26 | ---------------------------------------------------------------------- | |
27 | Ouputs: | |
28 | ---------------------------------------------------------------------- | |
29 | pin i/o port circuit trace connection | |
30 | ---------------------------------------------------------------------- | |
31 | 4 1 PA1 = R_LED1 | |
32 | 5 1 PA0 = L_LED2 | |
33 | 2 1 PD0 = R_LED3 | |
34 | 3 1 PD1 = R_LED4 | |
35 | 6 1 PD2 = R_LED5 | |
36 | 7 1 PD3 = R_LED6 | |
37 | 14 1 PB2 = L_LED7 | |
38 | 17 1 PB5 = L_LED8 | |
39 | 18 1 PB6 = L_LED9 | |
40 | 19 1 PB7 = L_LED10 | |
41 | ||
42 | */ | |
43 | ||
44 | - | /*-------------------------------------- |
44 | + | |
45 | - | Global Variables | |
45 | + | // Global Variables | |
46 | - | ---------------------------------------- */ |
46 | + | |
47 | // 8 MHz Internal Oscillator DIV8 (used for delay subroutines) | |
48 | - | /* 8 MHz Internal Oscillator DIV8 (used for delay subroutines) |
48 | + | // One CPU Cycle = 1us |
49 | - | One CPU Cycle = 1us */ |
49 | + | |
50 | ||
51 | #define R_LED1_PA1 (1) | |
52 | - | #define R_LED1_PA1 (1<<1) |
52 | + | #define L_LED2_PA0 (0) |
53 | - | #define L_LED2_PA0 (1<<0) |
53 | + | #define R_LED3_PD0 (0) |
54 | - | #define R_LED3_PD0 (1<<0) |
54 | + | #define R_LED4_PD1 (1) |
55 | - | #define R_LED4_PD1 (1<<1) |
55 | + | #define R_LED5_PD2 (2) |
56 | - | #define R_LED5_PD2 (1<<2) |
56 | + | #define R_LED6_PD3 (3) |
57 | - | #define R_LED6_PD3 (1<<3) |
57 | + | #define L_LED7_PB2 (2) |
58 | - | #define L_LED7_PB2 (1<<2) |
58 | + | #define L_LED8_PB5 (5) |
59 | - | #define L_LED8_PB5 (1<<5) |
59 | + | #define L_LED9_PB6 (6) |
60 | - | #define L_LED9_PB6 (1<<6) |
60 | + | #define L_LED10_PB7 (7) |
61 | - | #define L_LED10_PB7 (1<<7) |
61 | + | |
62 | ||
63 | - | //delay wait values, measured in us |
63 | + | #define CONST_DIM_DELAY_ON (200) |
64 | - | #define DIM_DELAY_ON (200) |
64 | + | #define CONST_DIM_DELAY_OFF (4000) |
65 | - | #define DIM_DELAY_OFF (200) |
65 | + | |
66 | /* This value is used to count us of delay and convert to ms | |
67 | Due to other cpu processing: "1ms of delay" < "1000us of delay" */ | |
68 | //#define TIME_CONVERSION_VAL (50) //actual number should be 150 (am running faster) | |
69 | - | #define TIME_CONVERSION_VAL (50) |
69 | + | #define TIME_CONVERSION_VAL (150) |
70 | ||
71 | int program_ms_counter; | |
72 | int program_counter_us; //used for tracking time elapsed | |
73 | ||
74 | //-------------------------------------- | |
75 | // Includes | | |
76 | //-------------------------------------- | |
77 | #include <avr/io.h> | |
78 | #include <util/delay.h> | |
79 | ||
80 | //-------------------------------------- | |
81 | // Delay Subroutines | | |
82 | //-------------------------------------- | |
83 | //These functions are from the delay.h include, the calls to delay functions | |
84 | //are re-written here to allow for longer waits. | |
85 | void delay_ms(uint16_t ms) { | |
86 | program_ms_counter+=ms; | |
87 | while ( ms ) | |
88 | { | |
89 | _delay_ms(1); | |
90 | ms--; | |
91 | } | |
92 | } | |
93 | void delay_us(uint16_t us) { | |
94 | program_counter_us+=us; | |
95 | while ( us ) | |
96 | { | |
97 | _delay_us(1); | |
98 | us--; | |
99 | } | |
100 | ||
101 | while(program_counter_us>=TIME_CONVERSION_VAL) | |
102 | - | //This loop will continue to convert us into ms until the "us counter" is |
102 | + | |
103 | - | // below the conversion val |
103 | + | program_ms_counter++; |
104 | program_counter_us-=TIME_CONVERSION_VAL; | |
105 | } | |
106 | - | program_ms_counter++; //increment "ms counter" |
106 | + | |
107 | - | program_counter_us-=TIME_CONVERSION_VAL; //subtract "us counter" |
107 | + | |
108 | //-------------------------------------- | |
109 | // Misc Subroutines | | |
110 | //-------------------------------------- | |
111 | ||
112 | - | // Program Subroutines | |
112 | + | |
113 | program_ms_counter=0; | |
114 | program_counter_us=0; | |
115 | } | |
116 | - | //set "ms counter" and "us counter" to 0 |
116 | + | |
117 | - | program_ms_counter=0; |
117 | + | void all_LEDs_ON(void) { |
118 | - | program_counter_us=0; |
118 | + | PORTA = 0xFF; |
119 | PORTB = 0xFF; | |
120 | PORTD = 0xFF; | |
121 | - | void all_LEDs_BRT(void) { |
121 | + | |
122 | - | //Sets all PORT outputs to 1, which is a high (+5V) on the pin |
122 | + | |
123 | - | PORTA = 0xFF; // = 0b11111111 |
123 | + | |
124 | - | PORTB = 0xFF; |
124 | + | PORTA = ~(0x03); |
125 | - | PORTD = 0xFF; |
125 | + | PORTB = ~(0xFF); |
126 | PORTD = ~(0xFF); | |
127 | } | |
128 | ||
129 | - | //Sets all PORT outputs to 0, which is a low (GND) on the pin |
129 | + | void program_left_turn_mode(void) { |
130 | - | Porta &= ~( R_Led1_Pa1 //Turn Off Port A, Pin 1 |
130 | + | PORTA &= ~((1<<R_LED1_PA1)+(1<<L_LED2_PA0)); |
131 | - | + L_Led2_Pa0); //Turn Off Port A, Pin 0 |
131 | + | PORTB &= ~((1<<L_LED10_PB7)+(1<<L_LED8_PB5)); |
132 | - | Portb &= ~( L_Led10_Pb7 //Turn Off Port B, Pin 7 |
132 | + | PORTD &= ~((1<<R_LED6_PD3)+(1<<R_LED5_PD2)+(1<<R_LED4_PD1)+(1<<R_LED3_PD0)); |
133 | - | + L_Led9_Pb6 //Turn Off Port B, Pin 6 |
133 | + | |
134 | - | + L_Led8_Pb5 //Turn Off Port B, Pin 5 |
134 | + | |
135 | - | + L_Led7_Pb2); //Turn Off Port B, Pin 2 |
135 | + | void program_brake_mode(void) { |
136 | - | Portd &= ~( R_Led6_Pd3 //Turn Off Port D, Pin 3 |
136 | + | PORTA &= ~((1<<R_LED1_PA1)+(1<<L_LED2_PA0)); |
137 | - | + R_Led5_Pd2 //Turn Off Port D, Pin 2 |
137 | + | |
138 | - | + R_Led4_Pd1 //Turn Off Port D, Pin 1 |
138 | + | |
139 | - | + R_Led3_Pd0); //Turn Off Port D, Pin 0 |
139 | + | void program_right_turn_mode (void) { |
140 | PORTA &= ~((1<<R_LED1_PA1)+(1<<L_LED2_PA0)); | |
141 | PORTB &= ~((1<<L_LED10_PB7)+(1<<L_LED9_PB6)+(1<<L_LED8_PB5)+(1<<L_LED7_PB2)); | |
142 | - | void program2_LEDs_to_DIM(void) { |
142 | + | PORTD &= ~((1<<R_LED6_PD3)+(1<<R_LED4_PD1)); |
143 | - | PORTA &= ~( R_LED1_PA1 //Turn Off PORT A, pin 1 |
143 | + | |
144 | - | + L_LED2_PA0); //Turn Off PORT A, pin 0 |
144 | + | |
145 | - | PORTB &= ~( L_LED10_PB7 //Turn Off PORT B, pin 7 |
145 | + | void program_all_dim_loop (int timer_val) { |
146 | - | + L_LED8_PB5); //Turn Off PORT B, pin 5 |
146 | + | |
147 | - | PORTD &= ~( R_LED6_PD3 //Turn Off PORT D, pin 3 |
147 | + | while(program_ms_counter < timer_val) |
148 | - | + R_LED5_PD2 //Turn Off PORT D, pin 2 |
148 | + | { |
149 | - | + R_LED4_PD1 //Turn Off PORT D, pin 1 |
149 | + | all_LEDs_ON(); |
150 | - | + R_LED3_PD0); //Turn Off PORT D, pin 0 |
150 | + | delay_us(CONST_DIM_DELAY_ON); |
151 | all_LEDs_OFF(); | |
152 | delay_us(CONST_DIM_DELAY_OFF); | |
153 | - | void program3_6_LEDs_to_DIM(void) { |
153 | + | } |
154 | - | PORTA &= ~( R_LED1_PA1 //Turn Off PORT A, pin 1 |
154 | + | |
155 | - | + L_LED2_PA0); //Turn Off PORT A, pin 0 |
155 | + | |
156 | ||
157 | void program_break_loop (int timer_val) { | |
158 | - | void program5_LEDs_to_DIM (void) { |
158 | + | |
159 | - | PORTA &= ~( R_LED1_PA1 //Turn Off PORT A, pin 1 |
159 | + | while(program_ms_counter < timer_val) |
160 | - | + L_LED2_PA0); //Turn Off PORT A, pin 0 |
160 | + | { |
161 | - | PORTB &= ~( L_LED10_PB7 //Turn Off PORT B, pin 7 |
161 | + | all_LEDs_ON(); |
162 | - | + L_LED9_PB6 //Turn Off PORT B, pin 6 |
162 | + | delay_us(CONST_DIM_DELAY_ON); |
163 | - | + L_LED8_PB5 //Turn Off PORT B, pin 5 |
163 | + | program_brake_mode(); |
164 | - | + L_LED7_PB2); //Turn Off PORT B, pin 2 |
164 | + | delay_us(CONST_DIM_DELAY_OFF); |
165 | - | PORTD &= ~( R_LED6_PD3 //Turn Off PORT D, pin 3 |
165 | + | } |
166 | - | + R_LED4_PD1); //Turn Off PORT D, pin 1 |
166 | + | |
167 | } | |
168 | ||
169 | - | /* Software PWM explaination: |
169 | + | void program_left_turn_loop (int timer_val) { |
170 | ||
171 | - | The dim LED effect is performed by a software PWM. Each of the loops in the |
171 | + | while(program_ms_counter < timer_val) |
172 | - | main() function turn on all LEDs, then turn off only the LEDs we want as DIM. |
172 | + | { |
173 | - | The LEDs that remain on will appear BRIGHT. The LEDs that are rapid turned |
173 | + | all_LEDs_ON(); |
174 | - | on and off will appear DIM. |
174 | + | delay_us(CONST_DIM_DELAY_ON); |
175 | program_left_turn_mode(); | |
176 | - | DIM_DELAY_ON DIM_DELAY_ON |
176 | + | delay_us(CONST_DIM_DELAY_OFF); |
177 | - | +5V ______________ _______________ |
177 | + | } |
178 | - | | | | | |
178 | + | |
179 | - | GND _______________| |_______________| |______________ |
179 | + | |
180 | - | DIM_DELAY_OFF DIM_DELAY_OFF DIM_DELAY_OFF |
180 | + | |
181 | void program_right_turn_loop (int timer_val) { | |
182 | ||
183 | - | void program_NORMAL_MODE(void) { |
183 | + | while(program_ms_counter < timer_val) |
184 | - | all_LEDs_BRT(); //Turn on all LEDs |
184 | + | { |
185 | - | delay_us(DIM_DELAY_ON); //Time to keep all LEDs on |
185 | + | all_LEDs_ON(); |
186 | - | all_LEDs_OFF(); //Turn off all LEDs |
186 | + | delay_us(CONST_DIM_DELAY_ON); |
187 | - | delay_us(DIM_DELAY_OFF); //Time to keep all LEDs off |
187 | + | program_right_turn_mode(); |
188 | delay_us(CONST_DIM_DELAY_OFF); | |
189 | } | |
190 | - | void program_LEFT_TURN(void) { |
190 | + | |
191 | - | all_LEDs_BRT(); //Turn on all LEDs |
191 | + | |
192 | - | delay_us(DIM_DELAY_ON); //Time to keep all LEDs on |
192 | + | |
193 | - | program2_LEDs_to_DIM(); //Turn off program 2 LEDs |
193 | + | |
194 | - | delay_us(DIM_DELAY_OFF); //Time to keep program 2 LEDs off |
194 | + | |
195 | // Main | | |
196 | //-------------------------------------- | |
197 | - | void program_BRAKE_MODE(void) { |
197 | + | |
198 | - | all_LEDs_BRT(); //Turn on all LEDs |
198 | + | |
199 | - | delay_us(DIM_DELAY_ON); //Time to keep all LEDs on |
199 | + | |
200 | - | program3_6_LEDs_to_DIM(); //Turn off program 3 LEDs |
200 | + | |
201 | - | delay_us(DIM_DELAY_OFF); //Time to keep program 3 LEDs off |
201 | + | |
202 | /* ---------------------------------------------------------------- */ | |
203 | ||
204 | - | void program_RIGHT_TURN (void) { |
204 | + | |
205 | - | all_LEDs_BRT(); //Turn on all LEDs |
205 | + | |
206 | - | delay_us(DIM_DELAY_ON); //Time to keep all LEDs on |
206 | + | |
207 | - | program5_LEDs_to_DIM(); //Turn off program 5 LEDs |
207 | + | |
208 | - | delay_us(DIM_DELAY_OFF); //Time to keep program 5 LEDs off |
208 | + | |
209 | all_LEDs_OFF(); | |
210 | ||
211 | /* ---------------------------------------------------------------- */ | |
212 | /* Main Loop */ | |
213 | /* ---------------------------------------------------------------- */ | |
214 | ||
215 | while(1) | |
216 | { | |
217 | ||
218 | //1 - All dim nothing happens (resting natural state) | |
219 | reset_ms_us_counters(); | |
220 | program_all_dim_loop(6000); | |
221 | ||
222 | //2 - left turn, all dim, 2 will blink at ½ sec for 5 sec. | |
223 | reset_ms_us_counters(); | |
224 | while(program_ms_counter < 5000) | |
225 | { | |
226 | program_left_turn_loop(program_ms_counter+500); | |
227 | - | //Begin with all LEDs off |
227 | + | program_all_dim_loop (program_ms_counter+500); |
228 | } | |
229 | //then dim for 1 sec | |
230 | program_all_dim_loop(6000); | |
231 | ||
232 | //3 – brakes get bright (8 LED’s) for 2 sec then dim for 1 for 6 seconds | |
233 | reset_ms_us_counters(); | |
234 | while(program_ms_counter < 6000) | |
235 | { | |
236 | program_break_loop (program_ms_counter+2000); | |
237 | - | /* ---------------------------- */ |
237 | + | program_all_dim_loop(program_ms_counter+1000); |
238 | - | /* Program 1 - NORMAL */ |
238 | + | } |
239 | - | /* ---------------------------- */ |
239 | + | |
240 | - | reset_ms_us_counters(); |
240 | + | //4 - All dim nothing happens (resting natural state) |
241 | reset_ms_us_counters(); | |
242 | - | while(program_ms_counter < 6000) |
242 | + | program_all_dim_loop(6000); |
243 | ||
244 | - | program_NORMAL_MODE(); |
244 | + | //5 – right turn, all dim, 2 will blink at ½ sec for 5 sec. |
245 | reset_ms_us_counters(); | |
246 | while(program_ms_counter < 5000) | |
247 | - | /* ---------------------------- */ |
247 | + | { |
248 | - | /* Program 3 - BRAKES */ |
248 | + | program_right_turn_loop(program_ms_counter+500); |
249 | - | /* ---------------------------- */ |
249 | + | program_all_dim_loop (program_ms_counter+500); |
250 | - | reset_ms_us_counters(); |
250 | + | } |
251 | //then dim for 1 sec. | |
252 | - | while(program_ms_counter < 500) |
252 | + | program_all_dim_loop(6000); |
253 | ||
254 | - | program_BRAKE_MODE(); |
254 | + | //6 – brakes get bright (8 LED’s) for 2 sec then dim for 1 for 6 seconds |
255 | reset_ms_us_counters(); | |
256 | - | while(program_ms_counter < 1000) |
256 | + | while(program_ms_counter < 6000) |
257 | { | |
258 | - | program_NORMAL_MODE(); |
258 | + | program_break_loop (program_ms_counter+2000); |
259 | program_all_dim_loop(program_ms_counter+1000); | |
260 | - | while(program_ms_counter < 1500) |
260 | + | } |
261 | ||
262 | - | program_BRAKE_MODE(); |
262 | + | |
263 | ||
264 | - | while(program_ms_counter < 2000) |
264 | + | |
265 | ||
266 | - | program_NORMAL_MODE(); |
266 | + |