2 * Copyright © 2009 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 volatile __xdata struct ao_data ao_data_ring[AO_DATA_RING];
21 volatile __data uint8_t ao_data_head;
23 #ifndef AO_ADC_FIRST_PIN
24 #define AO_ADC_FIRST_PIN 0
31 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 2;
33 # ifdef TELENANO_V_0_1
34 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 1;
36 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | AO_ADC_FIRST_PIN;
42 ao_data_get(__xdata struct ao_data *packet)
45 uint8_t i = ao_data_ring_prev(ao_sample_data);
47 uint8_t i = ao_data_ring_prev(ao_data_head);
49 ao_xmemcpy(packet, (void __xdata *) &ao_data_ring[i], sizeof (struct ao_data));
53 ao_adc_isr(void) __interrupt 1
58 sequence = (ADCCON2 & ADCCON2_SCH_MASK) >> ADCCON2_SCH_SHIFT;
59 #if TELEMETRUM_V_0_1 || TELEMETRUM_V_0_2 || TELEMETRUM_V_1_0 || TELEMETRUM_V_1_1 || TELEMETRUM_V_1_2 || TELELAUNCH_V_0_1
60 /* TeleMetrum readings */
63 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.accel_ref);
68 if (sequence == ADCCON3_ECH_TEMP)
70 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.accel + sequence);
77 #if HAS_EXTERNAL_TEMP == 0
78 /* start next channel conversion */
79 /* v0.2 replaces external temp sensor with internal one */
81 ADCCON3 = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
84 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | sequence;
88 #if TELEMINI_V_1_0 || TELENANO_V_0_1
89 /* TeleMini readings */
90 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.pres);
96 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 1;
101 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 2;
106 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 3;
111 sequence = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
113 case ADCCON3_ECH_TEMP:
120 #ifdef TELENANO_V_0_1
125 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 3;
130 sequence = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
132 case ADCCON3_ECH_TEMP:
142 /* Start next conversion */
145 #endif /* telemini || telenano */
147 #ifdef TELEFIRE_V_0_1
148 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.sense[0] + sequence - AO_ADC_FIRST_PIN);
152 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | (sequence + 1);
154 #endif /* TELEFIRE_V_0_1 */
157 #error No known ADC configuration set
161 /* record this conversion series */
162 ao_data_ring[ao_data_head].tick = ao_time();
163 ao_data_head = ao_data_ring_next(ao_data_head);
164 ao_wakeup(DATA_TO_XDATA(&ao_data_head));
169 ao_adc_dump(void) __reentrant
171 static __xdata struct ao_data packet;
172 ao_data_get(&packet);
174 printf("tick: %5u accel: %5d pres: %5d temp: %5d batt: %5d drogue: %5d main: %5d\n",
175 packet.tick, packet.adc.accel, packet.adc.pres, packet.adc.temp,
176 packet.adc.v_batt, packet.adc.sense_d, packet.adc.sense_m);
178 AO_ADC_DUMP(&packet);
182 __code struct ao_cmds ao_adc_cmds[] = {
183 { ao_adc_dump, "a\0Current ADC" },
191 ADCCFG = AO_ADC_PINS;
196 /* TeleMetrum configuration */
197 ADCCFG = ((1 << 0) | /* acceleration */
198 (1 << 1) | /* pressure */
199 #if HAS_EXTERNAL_TEMP
200 (1 << 2) | /* v0.1 temperature */
202 (1 << 3) | /* battery voltage */
203 (1 << 4) | /* drogue sense */
204 (1 << 5)); /* main sense */
208 /* TeleMini configuration */
209 ADCCFG = ((1 << 0) | /* pressure */
210 (1 << 1) | /* drogue sense */
211 (1 << 2) | /* main sense */
212 (1 << 3)); /* battery voltage */
215 #endif /* else AO_ADC_PINS */
217 /* enable interrupts */
220 ao_cmd_register(&ao_adc_cmds[0]);