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>
22 #ifndef LOG_MICRO_ASYNC
23 #define LOG_MICRO_ASYNC 1
28 #include <ao_serial.h>
30 #include <ao_storage.h>
32 static N_SAMPLES_TYPE ao_log_offset = STARTING_LOG_OFFSET;
36 ao_log_micro_save(void)
38 N_SAMPLES_TYPE n_samples = (ao_log_offset - STARTING_LOG_OFFSET) / sizeof (uint16_t);
40 ao_eeprom_write(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground));
41 ao_eeprom_write(PA_MIN_OFFSET, &pa_min, sizeof (pa_min));
42 ao_eeprom_write(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples));
46 ao_log_micro_restore(void)
48 ao_eeprom_read(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground));
49 ao_eeprom_read(PA_MIN_OFFSET, &pa_min, sizeof (pa_min));
53 ao_log_micro_data(void)
55 uint16_t low_bits = pa;
57 if (ao_log_offset < MAX_LOG_OFFSET) {
58 ao_eeprom_write(ao_log_offset, &low_bits, sizeof (low_bits));
59 ao_log_offset += sizeof (low_bits);
66 ao_log_micro_crc(uint16_t crc, uint8_t byte)
70 for (i = 0; i < 8; i++) {
71 if ((crc & 0x0001) ^ (byte & 0x0001))
72 crc = (crc >> 1) ^ POLY;
81 ao_log_hex_nibble(uint8_t b)
84 ao_async_byte('0' + b);
86 ao_async_byte('a' - 10 + b);
92 ao_log_hex_nibble(b>>4);
93 ao_log_hex_nibble(b&0xf);
103 #define MAX_N_SAMPLES ((MAX_LOG_OFFSET - STARTING_LOG_OFFSET) / 2)
106 ao_log_micro_dump(void)
108 N_SAMPLES_TYPE n_samples;
112 uint16_t crc = 0xffff;
114 ao_eeprom_read(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples));
116 if (n_samples == (N_SAMPLES_TYPE) (~0))
118 nbytes = STARTING_LOG_OFFSET + sizeof (uint16_t) * n_samples;
121 * Rewrite n_samples so that it includes the log ID value with
122 * 32-bit n_samples split into two chunks
124 if (sizeof (n_samples) > 2) {
125 N_SAMPLES_TYPE n_samples_low;
126 N_SAMPLES_TYPE n_samples_high;
127 n_samples_low = n_samples & ((1 << AO_LOG_ID_SHIFT) - 1);
128 n_samples_high = (n_samples - n_samples_low) << AO_LOG_ID_WIDTH;
129 n_samples = n_samples_low | n_samples_high;
132 n_samples |= AO_LOG_ID << AO_LOG_ID_SHIFT;
137 for (b = 0; b < nbytes; b++) {
140 ao_eeprom_read(b, &byte, 1);
142 if (N_SAMPLES_OFFSET <= b && b < (N_SAMPLES_OFFSET + sizeof(n_samples))) {
143 byte = n_samples >> ((b - N_SAMPLES_OFFSET) << 3);
147 crc = ao_log_micro_crc(crc, byte);
151 ao_log_hex(crc >> 8);