2012-02-11 07:51:35 -04:00
|
|
|
// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
|
|
|
|
//
|
|
|
|
// This is free software; you can redistribute it and/or modify it under
|
|
|
|
// the terms of the GNU Lesser General Public License as published by the
|
|
|
|
// Free Software Foundation; either version 2.1 of the License, or (at
|
|
|
|
// your option) any later version.
|
|
|
|
//
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
// total up and check overflow
|
|
|
|
// check size of group var_info
|
|
|
|
|
2012-02-11 07:51:35 -04:00
|
|
|
/// @file AP_Param.cpp
|
|
|
|
/// @brief The AP variable store.
|
|
|
|
|
|
|
|
|
|
|
|
#include <AP_Common.h>
|
|
|
|
|
|
|
|
#include <math.h>
|
|
|
|
#include <string.h>
|
2012-02-12 03:22:57 -04:00
|
|
|
#include <FastSerial.h>
|
2012-02-11 07:51:35 -04:00
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
#define ENABLE_FASTSERIAL_DEBUG
|
2012-02-11 07:51:35 -04:00
|
|
|
|
|
|
|
#ifdef ENABLE_FASTSERIAL_DEBUG
|
|
|
|
# define serialDebug(fmt, args...) if (FastSerial::getInitialized(0)) do {Serial.printf("%s:%d: " fmt "\n", __FUNCTION__, __LINE__ , ##args); delay(0); } while(0)
|
|
|
|
#else
|
|
|
|
# define serialDebug(fmt, args...)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
// Static member variables for AP_Param.
|
|
|
|
//
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
// max EEPROM write size. This is usually less than the physical
|
|
|
|
// size as only part of the EEPROM is reserved for parameters
|
|
|
|
uint16_t AP_Param::_eeprom_size;
|
|
|
|
|
2012-02-11 07:51:35 -04:00
|
|
|
// number of rows in the _var_info[] table
|
|
|
|
uint16_t AP_Param::_num_vars;
|
|
|
|
|
|
|
|
// storage and naming information about all types that can be saved
|
|
|
|
const AP_Param::Info *AP_Param::_var_info;
|
|
|
|
|
|
|
|
// write to EEPROM, checking each byte to avoid writing
|
|
|
|
// bytes that are already correct
|
|
|
|
void AP_Param::eeprom_write_check(const void *ptr, uint16_t ofs, uint8_t size)
|
|
|
|
{
|
|
|
|
const uint8_t *b = (const uint8_t *)ptr;
|
|
|
|
while (size--) {
|
|
|
|
uint8_t v = eeprom_read_byte((const uint8_t *)ofs);
|
|
|
|
if (v != *b) {
|
|
|
|
eeprom_write_byte((uint8_t *)ofs, *b);
|
|
|
|
}
|
|
|
|
b++;
|
|
|
|
ofs++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// write a sentinal value at the given offset
|
|
|
|
void AP_Param::write_sentinal(uint16_t ofs)
|
|
|
|
{
|
|
|
|
struct Param_header phdr;
|
|
|
|
phdr.type = AP_PARAM_NONE;
|
|
|
|
phdr.key = 0;
|
|
|
|
phdr.group_element = 0;
|
|
|
|
eeprom_write_check(&phdr, ofs, sizeof(phdr));
|
|
|
|
}
|
|
|
|
|
|
|
|
// erase all EEPROM variables by re-writing the header and adding
|
|
|
|
// a sentinal
|
|
|
|
void AP_Param::erase_all(void)
|
|
|
|
{
|
|
|
|
struct EEPROM_header hdr;
|
|
|
|
|
|
|
|
serialDebug("erase_all");
|
|
|
|
|
|
|
|
// write the header
|
|
|
|
hdr.magic = k_EEPROM_magic;
|
|
|
|
hdr.revision = k_EEPROM_revision;
|
|
|
|
hdr.spare = 0;
|
|
|
|
eeprom_write_check(&hdr, 0, sizeof(hdr));
|
|
|
|
|
|
|
|
// add a sentinal directly after the header
|
|
|
|
write_sentinal(sizeof(struct EEPROM_header));
|
|
|
|
}
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
// validate a group info table
|
|
|
|
bool AP_Param::check_group_info(const struct AP_Param::GroupInfo *group_info,
|
|
|
|
uint16_t *total_size,
|
|
|
|
uint8_t group_shift)
|
|
|
|
{
|
|
|
|
uint8_t type;
|
|
|
|
for (uint8_t i=0;
|
|
|
|
(type=pgm_read_byte(&group_info[i].type)) != AP_PARAM_NONE;
|
|
|
|
i++) {
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
// a nested group
|
|
|
|
const struct GroupInfo *ginfo = (const struct GroupInfo *)pgm_read_pointer(&group_info[i].group_info);
|
|
|
|
if (group_shift + _group_level_shift >= _group_bits) {
|
|
|
|
// double nesting of groups is not allowed
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
if (ginfo == NULL ||
|
|
|
|
!check_group_info(ginfo, total_size, group_shift + _group_level_shift)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (type == AP_PARAM_SPARE) {
|
|
|
|
// a placeholder for a removed entry
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (i >= (1<<_group_level_shift)) {
|
|
|
|
// passed limit on table size
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
uint8_t size = type_size((enum ap_var_type)type);
|
|
|
|
if (size == 0) {
|
|
|
|
// not a valid type
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
(*total_size) += size + sizeof(struct Param_header);
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// validate the _var_info[] table
|
|
|
|
bool AP_Param::check_var_info(void)
|
|
|
|
{
|
|
|
|
uint16_t total_size = sizeof(struct EEPROM_header);
|
|
|
|
|
|
|
|
for (uint16_t i=0; i<_num_vars; i++) {
|
|
|
|
uint8_t type = pgm_read_byte(&_var_info[i].type);
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
if (i == 0) {
|
|
|
|
// first element can't be a group, for first() call
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
const struct GroupInfo *group_info = (const struct GroupInfo *)pgm_read_pointer(&_var_info[i].group_info);
|
|
|
|
if (group_info == NULL ||
|
|
|
|
!check_group_info(group_info, &total_size, 0)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
uint8_t size = type_size((enum ap_var_type)type);
|
|
|
|
if (size == 0) {
|
|
|
|
// not a valid type - the top level list can't contain AP_PARAM_NONE
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
total_size += size + sizeof(struct Param_header);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (total_size > _eeprom_size) {
|
|
|
|
serialDebug("total_size %u exceeds _eeprom_size %u",
|
|
|
|
total_size, _eeprom_size);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2012-02-11 07:51:35 -04:00
|
|
|
// setup the _var_info[] table
|
2012-02-12 03:22:57 -04:00
|
|
|
bool AP_Param::setup(const AP_Param::Info *info, uint16_t num_vars, uint16_t eeprom_size)
|
2012-02-11 07:51:35 -04:00
|
|
|
{
|
|
|
|
struct EEPROM_header hdr;
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
_eeprom_size = eeprom_size;
|
2012-02-11 07:51:35 -04:00
|
|
|
_var_info = info;
|
|
|
|
_num_vars = num_vars;
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
if (!check_var_info()) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2012-02-11 07:51:35 -04:00
|
|
|
serialDebug("setup %u vars", (unsigned)num_vars);
|
|
|
|
|
|
|
|
// check the header
|
|
|
|
eeprom_read_block(&hdr, 0, sizeof(hdr));
|
|
|
|
if (hdr.magic != k_EEPROM_magic ||
|
|
|
|
hdr.revision != k_EEPROM_revision) {
|
|
|
|
// header doesn't match. We can't recover any variables. Wipe
|
|
|
|
// the header and setup the sentinal directly after the header
|
|
|
|
serialDebug("bad header in setup - erasing");
|
|
|
|
erase_all();
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
#define GROUP_OFFSET(base, i, shift) ((base)+(((uint16_t)i)<<(shift)))
|
|
|
|
|
|
|
|
// find the info structure given a header and a group_info table
|
|
|
|
// return the Info structure and a pointer to the variables storage
|
|
|
|
const struct AP_Param::Info *AP_Param::find_by_header_group(struct Param_header phdr, void **ptr,
|
|
|
|
uint8_t vindex,
|
|
|
|
const struct GroupInfo *group_info,
|
|
|
|
uint8_t group_base,
|
|
|
|
uint8_t group_shift)
|
|
|
|
{
|
|
|
|
uint8_t type;
|
|
|
|
for (uint8_t i=0;
|
|
|
|
(type=pgm_read_byte(&group_info[i].type)) != AP_PARAM_NONE;
|
|
|
|
i++) {
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
// a nested group
|
|
|
|
if (group_shift + _group_level_shift >= _group_bits) {
|
|
|
|
// too deeply nested - this should have been caught by
|
|
|
|
// setup() !
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
const struct GroupInfo *ginfo = (const struct GroupInfo *)pgm_read_pointer(&group_info[i].group_info);
|
|
|
|
const struct AP_Param::Info *ret = find_by_header_group(phdr, ptr, vindex, ginfo,
|
|
|
|
GROUP_OFFSET(group_base, i, group_shift),
|
|
|
|
group_shift + _group_level_shift);
|
|
|
|
if (ret != NULL) {
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (type == AP_PARAM_SPARE) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (GROUP_OFFSET(group_base, i, group_shift) == phdr.group_element) {
|
|
|
|
// found a group element
|
|
|
|
*ptr = (void*)(pgm_read_pointer(&_var_info[vindex].ptr) + pgm_read_word(&group_info[i].offset));
|
|
|
|
return &_var_info[vindex];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2012-02-11 07:51:35 -04:00
|
|
|
// find the info structure given a header
|
|
|
|
// return the Info structure and a pointer to the variables storage
|
|
|
|
const struct AP_Param::Info *AP_Param::find_by_header(struct Param_header phdr, void **ptr)
|
|
|
|
{
|
|
|
|
// loop over all named variables
|
|
|
|
for (uint16_t i=0; i<_num_vars; i++) {
|
|
|
|
uint8_t type = pgm_read_byte(&_var_info[i].type);
|
|
|
|
uint16_t key = pgm_read_word(&_var_info[i].key);
|
|
|
|
if (key != phdr.key) {
|
|
|
|
// not the right key
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (type != AP_PARAM_GROUP) {
|
|
|
|
// if its not a group then we are done
|
|
|
|
*ptr = (void*)pgm_read_pointer(&_var_info[i].ptr);
|
|
|
|
return &_var_info[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
const struct GroupInfo *group_info = (const struct GroupInfo *)pgm_read_pointer(&_var_info[i].group_info);
|
2012-02-12 03:22:57 -04:00
|
|
|
return find_by_header_group(phdr, ptr, i, group_info, 0, 0);
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
// find the info structure for a variable in a group
|
|
|
|
const struct AP_Param::Info *AP_Param::find_var_info_group(const struct GroupInfo *group_info,
|
|
|
|
uint8_t vindex,
|
|
|
|
uint8_t group_base,
|
|
|
|
uint8_t group_shift,
|
|
|
|
uint8_t *group_element,
|
|
|
|
const struct GroupInfo **group_ret)
|
|
|
|
{
|
|
|
|
uintptr_t base = pgm_read_pointer(&_var_info[vindex].ptr);
|
|
|
|
uint8_t type;
|
|
|
|
for (uint8_t i=0;
|
|
|
|
(type=pgm_read_byte(&group_info[i].type)) != AP_PARAM_NONE;
|
|
|
|
i++) {
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
const struct GroupInfo *ginfo = (const struct GroupInfo *)pgm_read_pointer(&group_info[i].group_info);
|
|
|
|
// a nested group
|
|
|
|
if (group_shift + _group_level_shift >= _group_bits) {
|
|
|
|
// too deeply nested - this should have been caught by
|
|
|
|
// setup() !
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
const struct AP_Param::Info *info;
|
|
|
|
info = find_var_info_group(ginfo, vindex,
|
|
|
|
GROUP_OFFSET(group_base, i, group_shift),
|
|
|
|
group_shift + _group_level_shift,
|
|
|
|
group_element,
|
|
|
|
group_ret);
|
|
|
|
if (info != NULL) {
|
|
|
|
return info;
|
2012-02-11 07:51:35 -04:00
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
} else if ((uintptr_t)this == base + pgm_read_pointer(&group_info[i].offset)) {
|
|
|
|
*group_element = GROUP_OFFSET(group_base, i, group_shift);
|
|
|
|
*group_ret = &group_info[i];
|
|
|
|
return &_var_info[vindex];
|
2012-02-11 07:51:35 -04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
// find the info structure for a variable
|
2012-02-12 03:22:57 -04:00
|
|
|
const struct AP_Param::Info *AP_Param::find_var_info(uint8_t *group_element,
|
|
|
|
const struct GroupInfo **group_ret)
|
2012-02-11 07:51:35 -04:00
|
|
|
{
|
|
|
|
for (uint16_t i=0; i<_num_vars; i++) {
|
|
|
|
uint8_t type = pgm_read_byte(&_var_info[i].type);
|
|
|
|
uintptr_t base = pgm_read_pointer(&_var_info[i].ptr);
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
const struct GroupInfo *group_info = (const struct GroupInfo *)pgm_read_pointer(&_var_info[i].group_info);
|
2012-02-12 03:22:57 -04:00
|
|
|
const struct AP_Param::Info *info;
|
|
|
|
info = find_var_info_group(group_info, i, 0, 0, group_element, group_ret);
|
|
|
|
if (info != NULL) {
|
|
|
|
return info;
|
2012-02-11 07:51:35 -04:00
|
|
|
}
|
|
|
|
} else if (base == (uintptr_t)this) {
|
|
|
|
*group_element = 0;
|
2012-02-12 03:22:57 -04:00
|
|
|
*group_ret = NULL;
|
2012-02-11 07:51:35 -04:00
|
|
|
return &_var_info[i];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
// return the storage size for a AP_PARAM_* type
|
|
|
|
const uint8_t AP_Param::type_size(enum ap_var_type type)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
case AP_PARAM_NONE:
|
2012-02-12 03:22:57 -04:00
|
|
|
case AP_PARAM_SPARE:
|
2012-02-11 07:51:35 -04:00
|
|
|
case AP_PARAM_GROUP:
|
|
|
|
return 0;
|
|
|
|
case AP_PARAM_INT8:
|
|
|
|
return 1;
|
|
|
|
case AP_PARAM_INT16:
|
|
|
|
return 2;
|
|
|
|
case AP_PARAM_INT32:
|
|
|
|
return 4;
|
|
|
|
case AP_PARAM_FLOAT:
|
|
|
|
return 4;
|
|
|
|
case AP_PARAM_VECTOR3F:
|
|
|
|
return 3*4;
|
2012-02-11 08:00:08 -04:00
|
|
|
case AP_PARAM_VECTOR6F:
|
|
|
|
return 6*4;
|
2012-02-11 07:51:35 -04:00
|
|
|
case AP_PARAM_MATRIX3F:
|
|
|
|
return 3*3*4;
|
|
|
|
}
|
|
|
|
serialDebug("unknown type %u\n", type);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
// scan the EEPROM looking for a given variable by header content
|
|
|
|
// return true if found, along with the offset in the EEPROM where
|
|
|
|
// the variable is stored
|
|
|
|
// if not found return the offset of the sentinal, or
|
|
|
|
bool AP_Param::scan(const AP_Param::Param_header *target, uint16_t *pofs)
|
|
|
|
{
|
|
|
|
struct Param_header phdr;
|
|
|
|
uint16_t ofs = sizeof(AP_Param::EEPROM_header);
|
2012-02-12 03:22:57 -04:00
|
|
|
while (ofs < _eeprom_size) {
|
2012-02-11 07:51:35 -04:00
|
|
|
eeprom_read_block(&phdr, (const void *)ofs, sizeof(phdr));
|
|
|
|
if (phdr.type == target->type &&
|
|
|
|
phdr.key == target->key &&
|
|
|
|
phdr.group_element == target->group_element) {
|
|
|
|
// found it
|
|
|
|
*pofs = ofs;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
if (phdr.type == AP_PARAM_NONE &&
|
|
|
|
phdr.key == 0) {
|
|
|
|
// we've reached the sentinal
|
|
|
|
*pofs = ofs;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
ofs += type_size((enum ap_var_type)phdr.type) + sizeof(phdr);
|
|
|
|
}
|
|
|
|
*pofs = ~0;
|
|
|
|
serialDebug("scan past end of eeprom");
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Copy the variable's whole name to the supplied buffer.
|
|
|
|
//
|
|
|
|
// If the variable is a group member, prepend the group name.
|
|
|
|
//
|
|
|
|
void AP_Param::copy_name(char *buffer, size_t buffer_size)
|
|
|
|
{
|
|
|
|
uint8_t group_element;
|
2012-02-12 03:22:57 -04:00
|
|
|
const struct GroupInfo *ginfo;
|
|
|
|
const struct AP_Param::Info *info = find_var_info(&group_element, &ginfo);
|
2012-02-11 07:51:35 -04:00
|
|
|
if (info == NULL) {
|
|
|
|
*buffer = 0;
|
|
|
|
serialDebug("no info found");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
strncpy_P(buffer, info->name, buffer_size);
|
2012-02-12 03:22:57 -04:00
|
|
|
if (ginfo != NULL) {
|
2012-02-11 07:51:35 -04:00
|
|
|
uint8_t len = strnlen(buffer, buffer_size);
|
|
|
|
if (len < buffer_size) {
|
2012-02-12 03:22:57 -04:00
|
|
|
strncpy_P(&buffer[len], ginfo->name, buffer_size-len);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Find a variable by name in a group
|
|
|
|
AP_Param *
|
|
|
|
AP_Param::find_group(const char *name, uint8_t vindex, const struct GroupInfo *group_info, enum ap_var_type *ptype)
|
|
|
|
{
|
|
|
|
uint8_t type;
|
|
|
|
for (uint8_t i=0;
|
|
|
|
(type=pgm_read_byte(&group_info[i].type)) != AP_PARAM_NONE;
|
|
|
|
i++) {
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
const struct GroupInfo *ginfo = (const struct GroupInfo *)pgm_read_pointer(&group_info[i].group_info);
|
|
|
|
AP_Param *ap = find_group(name, vindex, ginfo, ptype);
|
|
|
|
if (ap != NULL) {
|
|
|
|
return ap;
|
|
|
|
}
|
|
|
|
} else if (strcasecmp_P(name, group_info[i].name) == 0) {
|
|
|
|
uintptr_t p = pgm_read_pointer(&_var_info[vindex].ptr);
|
|
|
|
*ptype = (enum ap_var_type)type;
|
|
|
|
return (AP_Param *)(p + pgm_read_pointer(&group_info[i].offset));
|
2012-02-11 07:51:35 -04:00
|
|
|
}
|
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
return NULL;
|
2012-02-11 07:51:35 -04:00
|
|
|
}
|
|
|
|
|
2012-02-12 03:22:57 -04:00
|
|
|
|
2012-02-11 07:51:35 -04:00
|
|
|
// Find a variable by name.
|
|
|
|
//
|
|
|
|
AP_Param *
|
2012-02-12 03:22:57 -04:00
|
|
|
AP_Param::find(const char *name, enum ap_var_type *ptype)
|
2012-02-11 07:51:35 -04:00
|
|
|
{
|
|
|
|
for (uint16_t i=0; i<_num_vars; i++) {
|
|
|
|
uint8_t type = pgm_read_byte(&_var_info[i].type);
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
uint8_t len = strnlen_P(_var_info[i].name, AP_MAX_NAME_SIZE);
|
|
|
|
if (strncmp_P(name, _var_info[i].name, len) != 0) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
const struct GroupInfo *group_info = (const struct GroupInfo *)pgm_read_pointer(&_var_info[i].group_info);
|
2012-02-12 03:22:57 -04:00
|
|
|
return find_group(name + len, i, group_info, ptype);
|
2012-02-11 07:51:35 -04:00
|
|
|
} else if (strcasecmp_P(name, _var_info[i].name) == 0) {
|
2012-02-12 03:22:57 -04:00
|
|
|
*ptype = (enum ap_var_type)type;
|
2012-02-11 07:51:35 -04:00
|
|
|
return (AP_Param *)pgm_read_pointer(&_var_info[i].ptr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Save the variable to EEPROM, if supported
|
|
|
|
//
|
|
|
|
bool AP_Param::save(void)
|
|
|
|
{
|
|
|
|
uint8_t group_element;
|
2012-02-12 03:22:57 -04:00
|
|
|
const struct GroupInfo *ginfo;
|
|
|
|
const struct AP_Param::Info *info = find_var_info(&group_element, &ginfo);
|
2012-02-11 07:51:35 -04:00
|
|
|
|
|
|
|
if (info == NULL) {
|
|
|
|
// we don't have any info on how to store it
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct Param_header phdr;
|
|
|
|
|
|
|
|
// create the header we will use to store the variable
|
2012-02-12 03:22:57 -04:00
|
|
|
if (ginfo != NULL) {
|
|
|
|
phdr.type = pgm_read_byte(&ginfo->type);
|
|
|
|
phdr.key = pgm_read_word(&info->key);
|
|
|
|
phdr.group_element = group_element;
|
|
|
|
} else {
|
|
|
|
phdr.type = pgm_read_byte(&info->type);
|
|
|
|
phdr.key = pgm_read_word(&info->key);
|
|
|
|
phdr.group_element = 0;
|
|
|
|
}
|
2012-02-11 07:51:35 -04:00
|
|
|
|
|
|
|
// scan EEPROM to find the right location
|
|
|
|
uint16_t ofs;
|
|
|
|
if (scan(&phdr, &ofs)) {
|
|
|
|
// found an existing copy of the variable
|
|
|
|
eeprom_write_check(this, ofs+sizeof(phdr), type_size((enum ap_var_type)phdr.type));
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
if (ofs == (uint16_t)~0) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// write a new sentinal, then the data, then the header
|
|
|
|
write_sentinal(ofs + sizeof(phdr) + type_size((enum ap_var_type)phdr.type));
|
|
|
|
eeprom_write_check(this, ofs+sizeof(phdr), type_size((enum ap_var_type)phdr.type));
|
|
|
|
eeprom_write_check(&phdr, ofs, sizeof(phdr));
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Load the variable from EEPROM, if supported
|
|
|
|
//
|
|
|
|
bool AP_Param::load(void)
|
|
|
|
{
|
|
|
|
uint8_t group_element;
|
2012-02-12 03:22:57 -04:00
|
|
|
const struct GroupInfo *ginfo;
|
|
|
|
const struct AP_Param::Info *info = find_var_info(&group_element, &ginfo);
|
2012-02-11 07:51:35 -04:00
|
|
|
if (info == NULL) {
|
|
|
|
// we don't have any info on how to load it
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct Param_header phdr;
|
|
|
|
|
|
|
|
// create the header we will use to match the variable
|
2012-02-12 03:22:57 -04:00
|
|
|
if (ginfo != NULL) {
|
|
|
|
phdr.type = pgm_read_byte(&ginfo->type);
|
|
|
|
phdr.key = pgm_read_word(&info->key);
|
|
|
|
phdr.group_element = group_element;
|
|
|
|
} else {
|
|
|
|
phdr.type = pgm_read_byte(&info->type);
|
|
|
|
phdr.key = pgm_read_word(&info->key);
|
|
|
|
phdr.group_element = 0;
|
|
|
|
}
|
2012-02-11 07:51:35 -04:00
|
|
|
|
|
|
|
// scan EEPROM to find the right location
|
|
|
|
uint16_t ofs;
|
|
|
|
if (!scan(&phdr, &ofs)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// found it
|
|
|
|
eeprom_read_block(this, (void*)(ofs+sizeof(phdr)), type_size((enum ap_var_type)phdr.type));
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Load all variables from EEPROM
|
|
|
|
//
|
|
|
|
bool AP_Param::load_all(void)
|
|
|
|
{
|
|
|
|
struct Param_header phdr;
|
|
|
|
uint16_t ofs = sizeof(AP_Param::EEPROM_header);
|
2012-02-12 03:22:57 -04:00
|
|
|
while (ofs < _eeprom_size) {
|
2012-02-11 07:51:35 -04:00
|
|
|
eeprom_read_block(&phdr, (const void *)ofs, sizeof(phdr));
|
|
|
|
if (phdr.type == AP_PARAM_NONE &&
|
|
|
|
phdr.key == 0) {
|
|
|
|
// we've reached the sentinal
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
const struct AP_Param::Info *info;
|
|
|
|
void *ptr;
|
|
|
|
|
|
|
|
info = find_by_header(phdr, &ptr);
|
|
|
|
if (info != NULL) {
|
|
|
|
eeprom_read_block(ptr, (void*)(ofs+sizeof(phdr)), type_size((enum ap_var_type)phdr.type));
|
|
|
|
}
|
|
|
|
|
|
|
|
ofs += type_size((enum ap_var_type)phdr.type) + sizeof(phdr);
|
|
|
|
}
|
|
|
|
|
|
|
|
// we didn't find the sentinal
|
|
|
|
serialDebug("no sentinal in load_all");
|
|
|
|
return false;
|
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
|
|
|
|
|
|
|
|
// return the first variable in _var_info
|
|
|
|
AP_Param *AP_Param::first(uint32_t *token, enum ap_var_type *ptype)
|
|
|
|
{
|
|
|
|
*token = 0;
|
|
|
|
if (_num_vars == 0) {
|
|
|
|
return NULL;
|
|
|
|
}
|
2012-02-12 04:18:24 -04:00
|
|
|
if (ptype != NULL) {
|
|
|
|
*ptype = (enum ap_var_type)pgm_read_byte(&_var_info[0].type);
|
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
return (AP_Param *)(pgm_read_pointer(&_var_info[0].ptr));
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Returns the next variable in a group, recursing into groups
|
|
|
|
/// as needed
|
|
|
|
AP_Param *AP_Param::next_group(uint8_t vindex, const struct GroupInfo *group_info,
|
|
|
|
bool *found_current,
|
|
|
|
uint8_t group_base,
|
|
|
|
uint8_t group_shift,
|
|
|
|
uint32_t *token,
|
|
|
|
enum ap_var_type *ptype)
|
|
|
|
{
|
|
|
|
uint8_t type;
|
|
|
|
for (uint8_t i=0;
|
|
|
|
(type=pgm_read_byte(&group_info[i].type)) != AP_PARAM_NONE;
|
|
|
|
i++) {
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
// a nested group
|
|
|
|
const struct GroupInfo *ginfo = (const struct GroupInfo *)pgm_read_pointer(&group_info[i].group_info);
|
|
|
|
AP_Param *ap;
|
|
|
|
ap = next_group(vindex, ginfo, found_current, GROUP_OFFSET(group_base, i, group_shift),
|
|
|
|
group_shift + _group_level_shift, token, ptype);
|
|
|
|
if (ap != NULL) {
|
|
|
|
return ap;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if (*found_current) {
|
|
|
|
// got a new one
|
|
|
|
(*token) = ((uint32_t)GROUP_OFFSET(group_base, i, group_shift)<<16) | vindex;
|
2012-02-12 04:18:24 -04:00
|
|
|
if (ptype != NULL) {
|
|
|
|
*ptype = (enum ap_var_type)type;
|
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
return (AP_Param*)(pgm_read_pointer(&_var_info[vindex].ptr) + pgm_read_word(&group_info[i].offset));
|
|
|
|
}
|
|
|
|
if (GROUP_OFFSET(group_base, i, group_shift) == (*token)>>16) {
|
|
|
|
*found_current = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Returns the next variable in _var_info, recursing into groups
|
|
|
|
/// as needed
|
|
|
|
AP_Param *AP_Param::next(uint32_t *token, enum ap_var_type *ptype)
|
|
|
|
{
|
|
|
|
uint16_t i = (*token)&0xFFFF;
|
|
|
|
bool found_current = false;
|
|
|
|
if (i >= _num_vars) {
|
|
|
|
// illegal token
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
uint8_t type = pgm_read_byte(&_var_info[i].type);
|
|
|
|
if (type != AP_PARAM_GROUP) {
|
|
|
|
i++;
|
|
|
|
found_current = true;
|
|
|
|
}
|
|
|
|
for (; i<_num_vars; i++) {
|
|
|
|
type = pgm_read_byte(&_var_info[i].type);
|
|
|
|
if (type == AP_PARAM_GROUP) {
|
|
|
|
const struct GroupInfo *group_info = (const struct GroupInfo *)pgm_read_pointer(&_var_info[i].group_info);
|
|
|
|
AP_Param *ap = next_group(i, group_info, &found_current, 0, 0, token, ptype);
|
|
|
|
if (ap != NULL) {
|
|
|
|
return ap;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// found the next one
|
|
|
|
(*token) = i;
|
2012-02-12 04:18:24 -04:00
|
|
|
if (ptype != NULL) {
|
|
|
|
*ptype = (enum ap_var_type)type;
|
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
return (AP_Param *)(pgm_read_pointer(&_var_info[i].ptr));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Returns the next scalar in _var_info, recursing into groups
|
|
|
|
/// as needed
|
|
|
|
AP_Param *AP_Param::next_scalar(uint32_t *token, enum ap_var_type *ptype)
|
|
|
|
{
|
|
|
|
AP_Param *ap;
|
2012-02-12 04:18:24 -04:00
|
|
|
enum ap_var_type type;
|
|
|
|
while ((ap = next(token, &type)) != NULL && type > AP_PARAM_FLOAT) ;
|
|
|
|
if (ap != NULL && ptype != NULL) {
|
|
|
|
*ptype = type;
|
|
|
|
}
|
2012-02-12 03:22:57 -04:00
|
|
|
return ap;
|
|
|
|
}
|