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; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 volatile __xdata struct ao_data ao_data_ring[AO_DATA_RING];
22 volatile __data uint8_t ao_data_head;
23 #if (AO_DATA_ALL & ~(AO_DATA_ADC))
24 volatile __data uint8_t ao_data_present;
28 # define AO_ADC_FIRST_PIN 1
32 # define AO_ADC_FIRST_PIN 2
35 #ifndef AO_ADC_FIRST_PIN
36 # define AO_ADC_FIRST_PIN 0
42 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | AO_ADC_FIRST_PIN;
46 ao_data_get(__xdata struct ao_data *packet)
49 uint8_t i = ao_data_ring_prev(ao_sample_data);
51 uint8_t i = ao_data_ring_prev(ao_data_head);
53 ao_xmemcpy(packet, (void __xdata *) &ao_data_ring[i], sizeof (struct ao_data));
57 ao_adc_isr(void) __interrupt 1
62 sequence = (ADCCON2 & ADCCON2_SCH_MASK) >> ADCCON2_SCH_SHIFT;
63 #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
64 /* TeleMetrum readings */
67 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.accel_ref);
72 if (sequence == ADCCON3_ECH_TEMP)
74 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.accel + sequence);
81 #if HAS_EXTERNAL_TEMP == 0
82 /* start next channel conversion */
83 /* v0.2 replaces external temp sensor with internal one */
85 ADCCON3 = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
88 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | sequence;
93 #if TELEMINI_V_1_0 || TELENANO_V_0_1
94 /* TeleMini readings */
95 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.pres);
101 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 1;
106 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 2;
111 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 3;
116 sequence = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
118 case ADCCON3_ECH_TEMP:
125 #ifdef TELENANO_V_0_1
130 sequence = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | 3;
135 sequence = ADCCON3_EREF_1_25 | ADCCON3_EDIV_512 | ADCCON3_ECH_TEMP;
137 case ADCCON3_ECH_TEMP:
147 /* Start next conversion */
151 #endif /* telemini || telenano */
153 #if defined(TELEFIRE_V_0_1) || defined(TELEFIRE_V_0_2)
154 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.sense[0] + sequence - AO_ADC_FIRST_PIN);
158 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | (sequence + 1);
162 #endif /* TELEFIRE_V_0_1 */
165 a = (uint8_t __xdata *) (&ao_data_ring[ao_data_head].adc.batt);
177 #error No known ADC configuration set
180 /* record this conversion series */
181 ao_data_ring[ao_data_head].tick = ao_time();
182 ao_data_head = ao_data_ring_next(ao_data_head);
183 ao_wakeup(DATA_TO_XDATA(&ao_data_head));
187 ao_adc_dump(void) __reentrant
189 static __xdata struct ao_data packet;
190 ao_data_get(&packet);
192 printf("tick: %5u accel: %5d pres: %5d temp: %5d batt: %5d drogue: %5d main: %5d\n",
193 packet.tick, packet.adc.accel, packet.adc.pres, packet.adc.temp,
194 packet.adc.v_batt, packet.adc.sense_d, packet.adc.sense_m);
196 AO_ADC_DUMP(&packet);
200 __code struct ao_cmds ao_adc_cmds[] = {
201 { ao_adc_dump, "a\0Current ADC" },
209 ADCCFG = AO_ADC_PINS;
214 /* TeleMetrum configuration */
215 ADCCFG = ((1 << 0) | /* acceleration */
216 (1 << 1) | /* pressure */
217 #if HAS_EXTERNAL_TEMP
218 (1 << 2) | /* v0.1 temperature */
220 (1 << 3) | /* battery voltage */
221 (1 << 4) | /* drogue sense */
222 (1 << 5)); /* main sense */
226 /* TeleMini configuration */
227 ADCCFG = ((1 << 0) | /* pressure */
228 (1 << 1) | /* drogue sense */
229 (1 << 2) | /* main sense */
230 (1 << 3)); /* battery voltage */
233 #endif /* else AO_ADC_PINS */
235 /* enable interrupts */
238 ao_cmd_register(&ao_adc_cmds[0]);