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;
22 #if (AO_DATA_ALL & ~(AO_DATA_ADC))
23 volatile __data uint8_t ao_data_present;
27 # define AO_ADC_FIRST_PIN 1
31 # define AO_ADC_FIRST_PIN 2
34 #ifndef AO_ADC_FIRST_PIN
35 # define AO_ADC_FIRST_PIN 0
41 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | AO_ADC_FIRST_PIN;
45 ao_data_get(__xdata struct ao_data *packet)
48 uint8_t i = ao_data_ring_prev(ao_sample_data);
50 uint8_t i = ao_data_ring_prev(ao_data_head);
52 ao_xmemcpy(packet, (void __xdata *) &ao_data_ring[i], sizeof (struct ao_data));
56 ao_adc_isr(void) __interrupt 1
61 sequence = (ADCCON2 & ADCCON2_SCH_MASK) >> ADCCON2_SCH_SHIFT;
62 #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 || TELEBALLOON_V_1_1
63 /* TeleMetrum readings */
66 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.accel_ref);
71 if (sequence == ADCCON3_ECH_TEMP)
73 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.accel + sequence);
80 #if HAS_EXTERNAL_TEMP == 0
81 /* start next channel conversion */
82 /* v0.2 replaces external temp sensor with internal one */
84 ADCCON3 = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
87 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | sequence;
92 #if TELEMINI_V_1_0 || TELENANO_V_0_1
93 /* TeleMini readings */
94 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.pres);
100 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 1;
105 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 2;
110 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 3;
115 sequence = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
117 case ADCCON3_ECH_TEMP:
124 #ifdef TELENANO_V_0_1
129 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 3;
134 sequence = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
136 case ADCCON3_ECH_TEMP:
146 /* Start next conversion */
150 #endif /* telemini || telenano */
152 #if defined(TELEFIRE_V_0_1) || defined(TELEFIRE_V_0_2)
153 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.sense[0] + sequence - AO_ADC_FIRST_PIN);
157 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | (sequence + 1);
161 #endif /* TELEFIRE_V_0_1 */
164 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.batt);
176 #error No known ADC configuration set
179 /* record this conversion series */
180 ao_data_ring[ao_data_head].tick = ao_time();
181 ao_data_head = ao_data_ring_next(ao_data_head);
182 ao_wakeup(DATA_TO_XDATA(&ao_data_head));
186 ao_adc_dump(void) __reentrant
188 static __xdata struct ao_data packet;
189 ao_data_get(&packet);
191 printf("tick: %5u accel: %5d pres: %5d temp: %5d batt: %5d drogue: %5d main: %5d\n",
192 packet.tick, packet.adc.accel, packet.adc.pres, packet.adc.temp,
193 packet.adc.v_batt, packet.adc.sense_d, packet.adc.sense_m);
195 AO_ADC_DUMP(&packet);
199 __code struct ao_cmds ao_adc_cmds[] = {
200 { ao_adc_dump, "a\0Current ADC" },
208 ADCCFG = AO_ADC_PINS;
213 /* TeleMetrum configuration */
214 ADCCFG = ((1 << 0) | /* acceleration */
215 (1 << 1) | /* pressure */
216 #if HAS_EXTERNAL_TEMP
217 (1 << 2) | /* v0.1 temperature */
219 (1 << 3) | /* battery voltage */
220 (1 << 4) | /* drogue sense */
221 (1 << 5)); /* main sense */
225 /* TeleMini configuration */
226 ADCCFG = ((1 << 0) | /* pressure */
227 (1 << 1) | /* drogue sense */
228 (1 << 2) | /* main sense */
229 (1 << 3)); /* battery voltage */
232 #endif /* else AO_ADC_PINS */
234 /* enable interrupts */
237 ao_cmd_register(&ao_adc_cmds[0]);