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comparison main.c @ 4:54d369e3d689

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Fill out more main.c structure Add onewire files
author Matt Johnston <matt@ucc.asn.au>
date Wed, 09 May 2012 00:22:28 +0800
parents 888be1b234b6
children 011160e5b1ce
comparison
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3:888be1b234b6 4:54d369e3d689
19 // - bluetooth params 19 // - bluetooth params
20 // - number of sensors (and range?) 20 // - number of sensors (and range?)
21 21
22 // 1 second. we have 1024 prescaler, 32768 crystal. 22 // 1 second. we have 1024 prescaler, 32768 crystal.
23 #define SLEEP_COMPARE 32 23 #define SLEEP_COMPARE 32
24 #define SECONDS_WAKE 60 24 #define MEASURE_WAKE 60
25
26 #define COMMS_WAKE 3600
25 27
26 #define BAUD 9600 28 #define BAUD 9600
27 #define UBRR ((F_CPU)/16/(BAUD)-1) 29 #define UBRR ((F_CPU)/16/(BAUD)-1)
28 30
29 static int uart_putchar(char c, FILE *stream); 31 static int uart_putchar(char c, FILE *stream);
31 _FDEV_SETUP_WRITE); 33 _FDEV_SETUP_WRITE);
32 34
33 static uint8_t n_measurements; 35 static uint8_t n_measurements;
34 static uint8_t measurements[500]; 36 static uint8_t measurements[500];
35 37
38 // boolean flags
36 static uint8_t need_measurement; 39 static uint8_t need_measurement;
40 static uint8_t need_comms;
41 static uint8_t comms_done;
37 42
38 static uint8_t readpos; 43 static uint8_t readpos;
39 static char readbuf[30]; 44 static char readbuf[30];
40 45
41 static uint8_t sec_count; 46 static uint8_t sec_count;
47 static uint16_t bt_count;
48
49 static void deep_sleep();
42 50
43 static void 51 static void
44 uart_init(unsigned int ubrr) 52 uart_init(unsigned int ubrr)
45 { 53 {
46 // baud rate 54 // baud rate
80 } 88 }
81 89
82 static void 90 static void
83 cmd_btoff() 91 cmd_btoff()
84 { 92 {
93 comms_done = 1;
85 } 94 }
86 95
87 static void 96 static void
88 read_handler() 97 read_handler()
89 { 98 {
125 } 134 }
126 } 135 }
127 136
128 ISR(TIMER2_COMPA_vect) 137 ISR(TIMER2_COMPA_vect)
129 { 138 {
130 sec_count ++; 139 measure_count ++;
131 if (sec_count == SECONDS_WAKE) 140 comms_count ++;
132 { 141 if (measure_count == MEASURE_WAKE)
133 sec_count = 0; 142 {
143 measure_count = 0;
134 need_measurement = 1; 144 need_measurement = 1;
135 } 145 }
146
147 if (comms_count == COMMS_WAKE)
148 {
149 comms_count = 0;
150 need_comms = 1;
151 }
136 } 152 }
137 153
138 DWORD get_fattime (void) 154 DWORD get_fattime (void)
139 { 155 {
140 return 0; 156 return 0;
150 set_sleep_mode(SLEEP_MODE_PWR_SAVE); 166 set_sleep_mode(SLEEP_MODE_PWR_SAVE);
151 sleep_mode(); 167 sleep_mode();
152 } 168 }
153 169
154 static void 170 static void
171 idle_sleep()
172 {
173 set_sleep_mode(SLEEP_MODE_IDLE);
174 sleep_mode();
175 }
176
177 static void
155 do_measurement() 178 do_measurement()
156 { 179 {
157 need_measurement = 0; 180 need_measurement = 0;
181 }
182
183 static void
184 do_comms()
185 {
186 need_comms = 0;
187
188 // turn on bluetooth
189 // turn on serial (interrupts)
190
191 // write sd card here? same 3.3v regulator...
192
193 comms_done = 0;
194 for (;;)
195 {
196 if (comms_done)
197 {
198 break;
199 }
200 idle_sleep();
201 }
202
203 // turn off bluetooth
204 // turn off serial (interrupts)
158 } 205 }
159 206
160 int main(void) 207 int main(void)
161 { 208 {
162 uart_init(UBRR); 209 uart_init(UBRR);
175 for(;;){ 222 for(;;){
176 /* insert your main loop code here */ 223 /* insert your main loop code here */
177 if (need_measurement) 224 if (need_measurement)
178 { 225 {
179 do_measurement(); 226 do_measurement();
227 continue;
180 } 228 }
229
230 if (need_comms)
231 {
232 do_comms();
233 continue;
234 }
235
236 deep_sleep();
181 } 237 }
182 return 0; /* never reached */ 238 return 0; /* never reached */
183 } 239 }