+++ /dev/null
-/*
- * Copyright © 2009 Keith Packard <keithp@keithp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-#include "ao.h"
-
-__pdata uint32_t ao_log_current_pos;
-__pdata uint32_t ao_log_end_pos;
-__pdata uint32_t ao_log_start_pos;
-__xdata uint8_t ao_log_running;
-__pdata enum flight_state ao_log_state;
-__xdata uint16_t ao_flight_number;
-
-__code uint8_t ao_log_format = AO_LOG_FORMAT_FULL;
-
-void
-ao_log_flush(void)
-{
- ao_storage_flush();
-}
-
-/*
- * When erasing a flight log, make sure the config block
- * has an up-to-date version of the current flight number
- */
-
-struct ao_log_erase {
- uint8_t unused;
- uint16_t flight;
-};
-
-static __xdata struct ao_log_erase erase;
-
-#define LOG_MAX_ERASE 16
-
-static uint32_t
-ao_log_erase_pos(uint8_t i)
-{
- return i * sizeof (struct ao_log_erase) + AO_STORAGE_ERASE_LOG;
-}
-
-void
-ao_log_write_erase(uint8_t pos)
-{
- erase.unused = 0x00;
- erase.flight = ao_flight_number;
- ao_storage_write(ao_log_erase_pos(pos), &erase, sizeof (erase));
- ao_storage_flush();
-}
-
-static void
-ao_log_read_erase(uint8_t pos)
-{
- ao_storage_read(ao_log_erase_pos(pos), &erase, sizeof (erase));
-}
-
-
-static void
-ao_log_erase_mark(void)
-{
- uint8_t i;
-
- for (i = 0; i < LOG_MAX_ERASE; i++) {
- ao_log_read_erase(i);
- if (erase.unused == 0 && erase.flight == ao_flight_number)
- return;
- if (erase.unused == 0xff) {
- ao_log_write_erase(i);
- return;
- }
- }
- ao_config_put();
-}
-
-static uint8_t
-ao_log_slots()
-{
- return (uint8_t) (ao_storage_config / ao_config.flight_log_max);
-}
-
-uint32_t
-ao_log_pos(uint8_t slot)
-{
- return ((slot) * ao_config.flight_log_max);
-}
-
-static uint16_t
-ao_log_max_flight(void)
-{
- uint8_t log_slot;
- uint8_t log_slots;
- uint16_t log_flight;
- uint16_t max_flight = 0;
-
- /* Scan the log space looking for the biggest flight number */
- log_slots = ao_log_slots();
- for (log_slot = 0; log_slot < log_slots; log_slot++) {
- log_flight = ao_log_flight(log_slot);
- if (!log_flight)
- continue;
- if (max_flight == 0 || (int16_t) (log_flight - max_flight) > 0)
- max_flight = log_flight;
- }
- return max_flight;
-}
-
-void
-ao_log_scan(void) __reentrant
-{
- uint8_t log_slot;
- uint8_t log_slots;
- uint8_t log_want;
-
- ao_config_get();
-
- ao_flight_number = ao_log_max_flight();
- if (ao_flight_number)
- if (++ao_flight_number == 0)
- ao_flight_number = 1;
-
- /* Now look through the log of flight numbers from erase operations and
- * see if the last one is bigger than what we found above
- */
- for (log_slot = LOG_MAX_ERASE; log_slot-- > 0;) {
- ao_log_read_erase(log_slot);
- if (erase.unused == 0) {
- if (ao_flight_number == 0 ||
- (int16_t) (erase.flight - ao_flight_number) > 0)
- ao_flight_number = erase.flight;
- break;
- }
- }
- if (ao_flight_number == 0)
- ao_flight_number = 1;
-
- /* With a flight number in hand, find a place to write a new log,
- * use the target flight number to index the available log slots so
- * that we write logs to each spot about the same number of times.
- */
-
- /* Find a log slot for the next flight, if available */
- ao_log_current_pos = ao_log_end_pos = 0;
- log_slots = ao_log_slots();
- log_want = (ao_flight_number - 1) % log_slots;
- log_slot = log_want;
- do {
- if (ao_log_flight(log_slot) == 0) {
- ao_log_current_pos = ao_log_pos(log_slot);
- ao_log_end_pos = ao_log_current_pos + ao_config.flight_log_max;
- break;
- }
- if (++log_slot >= log_slots)
- log_slot = 0;
- } while (log_slot != log_want);
-
- ao_wakeup(&ao_flight_number);
-}
-
-void
-ao_log_start(void)
-{
- /* start logging */
- ao_log_running = 1;
- ao_wakeup(&ao_log_running);
-}
-
-void
-ao_log_stop(void)
-{
- ao_log_running = 0;
- ao_log_flush();
-}
-
-uint8_t
-ao_log_present(void)
-{
- return ao_log_max_flight() != 0;
-}
-
-uint8_t
-ao_log_full(void)
-{
- return ao_log_current_pos == ao_log_end_pos;
-}
-
-static __xdata struct ao_task ao_log_task;
-
-void
-ao_log_list(void) __reentrant
-{
- uint8_t slot;
- uint8_t slots;
- uint16_t flight;
-
- slots = ao_log_slots();
- for (slot = 0; slot < slots; slot++)
- {
- flight = ao_log_flight(slot);
- if (flight)
- printf ("flight %d start %x end %x\n",
- flight,
- (uint16_t) (ao_log_pos(slot) >> 8),
- (uint16_t) (ao_log_pos(slot+1) >> 8));
- }
- printf ("done\n");
-}
-
-void
-ao_log_delete(void) __reentrant
-{
- uint8_t slot;
- uint8_t slots;
-
- ao_cmd_decimal();
- if (ao_cmd_status != ao_cmd_success)
- return;
-
- slots = ao_log_slots();
- /* Look for the flight log matching the requested flight */
- if (ao_cmd_lex_i) {
- for (slot = 0; slot < slots; slot++) {
- if (ao_log_flight(slot) == ao_cmd_lex_i) {
- ao_log_erase_mark();
- ao_log_current_pos = ao_log_pos(slot);
- ao_log_end_pos = ao_log_current_pos + ao_config.flight_log_max;
- while (ao_log_current_pos < ao_log_end_pos) {
- uint8_t i;
- static __xdata uint8_t b;
-
- /*
- * Check to see if we've reached the end of
- * the used memory to avoid re-erasing the same
- * memory over and over again
- */
- for (i = 0; i < 16; i++) {
- if (ao_storage_read(ao_log_current_pos + i, &b, 1))
- if (b != 0xff)
- break;
- }
- if (i == 16)
- break;
- ao_storage_erase(ao_log_current_pos);
- ao_log_current_pos += ao_storage_block;
- }
- puts("Erased");
- return;
- }
- }
- }
- printf("No such flight: %d\n", ao_cmd_lex_i);
-}
-
-__code struct ao_cmds ao_log_cmds[] = {
- { ao_log_list, "l\0List flight logs" },
- { ao_log_delete, "d <flight-number>\0Delete flight" },
- { 0, NULL },
-};
-
-void
-ao_log_init(void)
-{
- ao_log_running = 0;
-
- /* For now, just log the flight starting at the begining of eeprom */
- ao_log_state = ao_flight_invalid;
-
- ao_cmd_register(&ao_log_cmds[0]);
-
- /* Create a task to log events to eeprom */
- ao_add_task(&ao_log_task, ao_log, "log");
-}
projects / fw / altos / blobdiff