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- //language.c
- #include "language.h"
- #include <avr/pgmspace.h>
- #include "bootapp.h"
- // Currectly active language selection.
- uint8_t lang_selected = 0;
- #if (LANG_MODE == 0) //primary language only
- #else //(LANG_MODE == 0)
- //reserved xx kbytes for secondary language table
- const char _SEC_LANG[LANG_SIZE_RESERVED] PROGMEM_I2 = "_SEC_LANG";
- #endif //(LANG_MODE == 0)
- //lang_table_t structure - 16byte header
- typedef struct
- {
- struct
- {
- uint32_t magic; //+0
- uint16_t size; //+4
- uint16_t count; //+6
- uint16_t checksum; //+8
- uint16_t reserved0; //+10
- uint32_t reserved1; //+12
- } header;
- uint16_t table[];
- } lang_table_t;
- //lang_table pointer
- lang_table_t* lang_table = 0;
- const char* lang_get_translation(const char* s)
- {
- if (lang_selected == 0) return s + 2; //primary language selected
- if (lang_table == 0) return s + 2; //sec. lang table not found
- uint16_t ui = pgm_read_word(((uint16_t*)s)); //read string id
- if (ui == 0xffff) return s + 2; //translation not found
- ui = pgm_read_word(((uint16_t*)(((char*)lang_table + 16 + ui*2)))); //read relative offset
- if (pgm_read_byte(((uint8_t*)((char*)lang_table + ui))) == 0)
- return s + 2;//not translated string
- return (const char*)((char*)lang_table + ui); //return calculated pointer
- }
- const char* lang_get_sec_lang_str(const char* s)
- {
- uint16_t ui = (uint16_t)&_SEC_LANG; //pointer to _SEC_LANG reserved space
- ui += 0x00ff; //add 1 page
- ui &= 0xff00; //align to page
- lang_table_t* _lang_table = ui; //table pointer
- ui = pgm_read_word(((uint16_t*)s)); //read string id
- if (ui == 0xffff) return s + 2; //translation not found
- ui = pgm_read_word(((uint16_t*)(((char*)_lang_table + 16 + ui*2)))); //read relative offset
- return (const char*)((char*)_lang_table + ui); //return calculated pointer
- }
- const char* lang_get_sec_lang_str_by_id(uint16_t id)
- {
- uint16_t ui = ((((uint16_t)&_SEC_LANG) + 0x00ff) & 0xff00); //table pointer
- return ui + pgm_read_word(((uint16_t*)(ui + 16 + id * 2))); //read relative offset and return calculated pointer
- }
- const char* lang_select(uint8_t lang)
- {
- #if (LANG_MODE == 0) //primary language only
- return 0;
- #else //(LANG_MODE == 0)
- if (lang == 0) //primary language
- {
- lang_table = 0;
- lang_selected = 0;
- return;
- }
- uint16_t ui = (uint16_t)&_SEC_LANG; //pointer to _SEC_LANG reserved space
- ui += 0x00ff; //add 1 page
- ui &= 0xff00; //align to page
- lang_table = ui; //set table pointer
- ui = pgm_read_word(((uint16_t*)(((char*)lang_table + 16)))); //read relative offset of first string (language name)
- return (const char*)((char*)lang_table + ui); //return calculated pointer
- #endif //(LANG_MODE == 0)
- }
- uint8_t lang_get_count()
- {
- uint16_t ui = (uint16_t)&_SEC_LANG; //pointer to _SEC_LANG reserved space
- ui += 0x00ff; //add 1 page
- ui &= 0xff00; //align to page
- lang_table_t* _lang_table = ui; //table pointer
- if (pgm_read_dword(((uint32_t*)(_lang_table + 0))) == 0x4bb45aa5) return 2;
- return 1;
- }
- const char* lang_get_name(uint8_t lang)
- {
- if (lang == 0) return MSG_LANGUAGE_NAME + 2;
- return lang_get_sec_lang_str(MSG_LANGUAGE_NAME);
- }
- #ifdef DEBUG_SEC_LANG
- uint16_t lang_print_sec_lang(FILE* out)
- {
- printf_P(_n("&_SEC_LANG = 0x%04x\n"), &_SEC_LANG);
- printf_P(_n("sizeof(_SEC_LANG) = 0x%04x\n"), sizeof(_SEC_LANG));
- uint16_t ptr_lang_table0 = ((uint16_t)(&_SEC_LANG) + 0xff) & 0xff00;
- printf_P(_n("&_lang_table0 = 0x%04x\n"), ptr_lang_table0);
- uint32_t _lt_magic = pgm_read_dword(((uint32_t*)(ptr_lang_table0 + 0)));
- uint16_t _lt_size = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 4)));
- uint16_t _lt_count = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 6)));
- uint16_t _lt_chsum = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 8)));
- uint16_t _lt_resv0 = pgm_read_word(((uint16_t*)(ptr_lang_table0 + 10)));
- uint32_t _lt_resv1 = pgm_read_dword(((uint32_t*)(ptr_lang_table0 + 12)));
- printf_P(_n(" _lt_magic = 0x%08lx %S\n"), _lt_magic, (_lt_magic==0x4bb45aa5)?_n("OK"):_n("NA"));
- printf_P(_n(" _lt_size = 0x%04x (%d)\n"), _lt_size, _lt_size);
- printf_P(_n(" _lt_count = 0x%04x (%d)\n"), _lt_count, _lt_count);
- printf_P(_n(" _lt_chsum = 0x%04x\n"), _lt_chsum);
- printf_P(_n(" _lt_resv0 = 0x%04x\n"), _lt_resv0);
- printf_P(_n(" _lt_resv1 = 0x%08lx\n"), _lt_resv1);
- if (_lt_magic != 0x4bb45aa5) return 0;
- puts_P(_n(" strings:\n"));
- uint16_t ui = ((((uint16_t)&_SEC_LANG) + 0x00ff) & 0xff00); //table pointer
- for (ui = 0; ui < _lt_count; ui++)
- fprintf_P(out, _n(" %3d %S\n"), ui, lang_get_sec_lang_str_by_id(ui));
- return _lt_count;
- }
- #endif //DEBUG_SEC_LANG
- const char MSG_LANGUAGE_NAME[] PROGMEM_I1 = ISTR("English"); ////c=0 r=0
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