telegps-v1.0: Provide one log and append to it
[fw/altos] / src / kernel / ao_log.c
index 20febefe27f2df4693ad4cd02b6f31b96aaa20ea..dc3b6486caabea5355753cea8e446fd1eb213dac 100644 (file)
 #include "ao.h"
 #include <ao_log.h>
 #include <ao_config.h>
+#if HAS_TRACKER
+#include <ao_tracker.h>
+#endif
 
+__xdata uint8_t        ao_log_mutex;
 __pdata uint32_t ao_log_current_pos;
 __pdata uint32_t ao_log_end_pos;
 __pdata uint32_t ao_log_start_pos;
@@ -38,13 +42,22 @@ ao_log_flush(void)
  */
 
 struct ao_log_erase {
-       uint8_t unused;
+       uint8_t mark;
        uint16_t flight;
 };
 
 static __xdata struct ao_log_erase erase;
 
+#ifndef LOG_MAX_ERASE
 #define LOG_MAX_ERASE  16
+#endif
+
+#ifndef LOG_ERASE_MARK
+#if USE_EEPROM_CONFIG
+#error "Must define LOG_ERASE_MARK with USE_EEPROM_CONFIG"
+#endif
+#define LOG_ERASE_MARK 0x00
+#endif
 
 static uint32_t
 ao_log_erase_pos(uint8_t i)
@@ -55,9 +68,21 @@ ao_log_erase_pos(uint8_t i)
 void
 ao_log_write_erase(uint8_t pos)
 {
-       erase.unused = 0x00;
+       erase.mark = LOG_ERASE_MARK;
        erase.flight = ao_flight_number;
        ao_config_write(ao_log_erase_pos(pos),  &erase, sizeof (erase));
+
+#if USE_EEPROM_CONFIG
+       if (pos == 0) {
+               uint8_t i;
+               for (i = 1; i < LOG_MAX_ERASE; i++) {
+                       erase.mark = ~LOG_ERASE_MARK;
+                       erase.flight = 0;
+                       ao_config_write(ao_log_erase_pos(i), &erase, sizeof (erase));
+               }
+       }
+#endif
+
        ao_config_flush();
 }
 
@@ -75,9 +100,9 @@ ao_log_erase_mark(void)
 
        for (i = 0; i < LOG_MAX_ERASE; i++) {
                ao_log_read_erase(i);
-               if (erase.unused == 0 && erase.flight == ao_flight_number)
+               if (erase.mark == LOG_ERASE_MARK && erase.flight == ao_flight_number)
                        return;
-               if (erase.unused == 0xff) {
+               if (erase.mark != LOG_ERASE_MARK) {
                        ao_log_write_erase(i);
                        return;
                }
@@ -117,26 +142,46 @@ ao_log_max_flight(void)
        return max_flight;
 }
 
-void
-ao_log_scan(void) __reentrant
+static void
+ao_log_erase(uint8_t slot) __reentrant
 {
-       uint8_t         log_slot;
-       uint8_t         log_slots;
-       uint8_t         log_want;
-
-       ao_config_get();
+       uint32_t log_current_pos, log_end_pos;
+
+       ao_log_erase_mark();
+       log_current_pos = ao_log_pos(slot);
+       log_end_pos = log_current_pos + ao_config.flight_log_max;
+       while (log_current_pos < 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(log_current_pos + i, &b, 1))
+                               if (b != 0xff)
+                                       break;
+               }
+               if (i == 16)
+                       break;
+               ao_storage_erase(log_current_pos);
+               log_current_pos += ao_storage_block;
+       }
+}
 
-       ao_flight_number = ao_log_max_flight();
-       if (ao_flight_number)
-               if (++ao_flight_number == 0)
-                       ao_flight_number = 1;
+static void
+ao_log_find_max_erase_flight(void) __reentrant
+{
+       uint8_t log_slot;
 
        /* 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 (erase.mark == LOG_ERASE_MARK) {
                        if (ao_flight_number == 0 ||
                            (int16_t) (erase.flight - ao_flight_number) > 0)
                                ao_flight_number = erase.flight;
@@ -145,6 +190,74 @@ ao_log_scan(void) __reentrant
        }
        if (ao_flight_number == 0)
                ao_flight_number = 1;
+}
+
+void
+ao_log_scan(void) __reentrant
+{
+       uint8_t         log_slot;
+       uint8_t         log_slots;
+#if !FLIGHT_LOG_APPEND
+       uint8_t         log_want;
+#endif
+
+       ao_config_get();
+
+       /* Get any existing flight number */
+       ao_flight_number = ao_log_max_flight();
+
+#if FLIGHT_LOG_APPEND
+
+       /* Deal with older OS versions which stored multiple
+        * flights in rom by erasing everything after the first
+        * slot
+        */
+       if (ao_config.flight_log_max != ao_storage_log_max) {
+               log_slots = ao_log_slots();
+               for (log_slot = 1; log_slot < log_slots; log_slot++) {
+                       if (ao_log_flight(log_slot) != 0)
+                               ao_log_erase(log_slot);
+               }
+               ao_config_log_fix_append();
+       }
+       ao_log_current_pos = ao_log_pos(0);
+       ao_log_end_pos = ao_log_current_pos + ao_storage_log_max;
+
+       if (ao_flight_number) {
+               uint32_t        full = ao_log_current_pos;
+               uint32_t        empty = ao_log_end_pos - ao_log_size;
+
+               /* If there's already a flight started, then find the
+                * end of it
+                */
+               for (;;) {
+                       ao_log_current_pos = (full + empty) >> 1;
+                       ao_log_current_pos -= ao_log_current_pos % ao_log_size;
+
+                       if (ao_log_current_pos == full) {
+                               if (ao_log_check(ao_log_current_pos))
+                                       ao_log_current_pos += ao_log_size;
+                               break;
+                       }
+                       if (ao_log_current_pos == empty)
+                               break;
+
+                       if (ao_log_check(ao_log_current_pos)) {
+                               full = ao_log_current_pos;
+                       } else {
+                               empty = ao_log_current_pos;
+                       }
+               }
+       } else {
+               ao_log_find_max_erase_flight();
+       }
+#else
+
+       if (ao_flight_number)
+               if (++ao_flight_number == 0)
+                       ao_flight_number = 1;
+
+       ao_log_find_max_erase_flight();
 
        /* 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
@@ -165,7 +278,7 @@ ao_log_scan(void) __reentrant
                if (++log_slot >= log_slots)
                        log_slot = 0;
        } while (log_slot != log_want);
-
+#endif
        ao_wakeup(&ao_flight_number);
 }
 
@@ -196,7 +309,11 @@ ao_log_full(void)
        return ao_log_current_pos == ao_log_end_pos;
 }
 
-#if HAS_ADC
+#ifndef LOG_ADC
+#define LOG_ADC        HAS_ADC
+#endif
+
+#if LOG_ADC
 static __xdata struct ao_task ao_log_task;
 #endif
 
@@ -235,28 +352,13 @@ ao_log_delete(void) __reentrant
        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;
-                               }
+#if HAS_TRACKER
+                               ao_tracker_erase_start(ao_cmd_lex_i);
+#endif
+                               ao_log_erase(slot);
+#if HAS_TRACKER
+                               ao_tracker_erase_end();
+#endif
                                puts("Erased");
                                return;
                        }
@@ -284,7 +386,7 @@ ao_log_init(void)
 #ifndef HAS_ADC
 #error Define HAS_ADC for ao_log.c
 #endif
-#if HAS_ADC
+#if LOG_ADC
        /* Create a task to log events to eeprom */
        ao_add_task(&ao_log_task, ao_log, "log");
 #endif