2 * Copyright © 2012 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.
20 #include <ao_micropeak.h>
21 #include <ao_log_micro.h>
25 #include <ao_serial.h>
27 #include <ao_storage.h>
29 static uint16_t ao_log_offset = STARTING_LOG_OFFSET;
31 #define AO_LOG_ID_SHIFT 12
32 #define AO_LOG_ID_MASK ((1 << AO_LOG_ID_SHIFT) - 1)
35 ao_log_micro_save(void)
37 uint16_t n_samples = (ao_log_offset - STARTING_LOG_OFFSET) / sizeof (uint16_t);
40 n_samples |= AO_LOG_ID << AO_LOG_ID_SHIFT;
42 ao_eeprom_write(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground));
43 ao_eeprom_write(PA_MIN_OFFSET, &pa_min, sizeof (pa_min));
44 ao_eeprom_write(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples));
48 ao_log_micro_restore(void)
50 ao_eeprom_read(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground));
51 ao_eeprom_read(PA_MIN_OFFSET, &pa_min, sizeof (pa_min));
55 ao_log_micro_data(void)
57 uint16_t low_bits = pa;
59 if (ao_log_offset < MAX_LOG_OFFSET) {
60 ao_eeprom_write(ao_log_offset, &low_bits, sizeof (low_bits));
61 ao_log_offset += sizeof (low_bits);
68 ao_log_micro_crc(uint16_t crc, uint8_t byte)
72 for (i = 0; i < 8; i++) {
73 if ((crc & 0x0001) ^ (byte & 0x0001))
74 crc = (crc >> 1) ^ POLY;
83 ao_log_hex_nibble(uint8_t b)
86 ao_async_byte('0' + b);
88 ao_async_byte('a' - 10 + b);
94 ao_log_hex_nibble(b>>4);
95 ao_log_hex_nibble(b&0xf);
106 ao_log_micro_dump(void)
112 uint16_t crc = 0xffff;
114 ao_eeprom_read(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples));
116 if (n_samples == 0xffff)
119 n_samples &= AO_LOG_ID_MASK;
121 nbytes = STARTING_LOG_OFFSET + sizeof (uint16_t) * n_samples;
125 for (b = 0; b < nbytes; b++) {
128 ao_eeprom_read(b, &byte, 1);
130 crc = ao_log_micro_crc(crc, byte);
134 ao_log_hex(crc >> 8);