2026-04-14 06:36:43 +00:00
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2026-05-14 06:32:28 +00:00
< div id = "projectname" > M5Unit-NFC< span id = "projectnumber" >   0.0.3 git rev:59f5362</ span >
2026-04-14 06:36:43 +00:00
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< a href = "#namespaces" > Namespaces</ a > |
< a href = "#func-members" > Functions</ a > </ div >
< div class = "headertitle" >< div class = "title" > nfca.cpp File Reference</ div ></ div >
</ div > <!--header-->
< div class = "contents" >
< p > NFC-A definitions.
< a href = "#details" > More...</ a ></ p >
< div class = "textblock" >< code > #include " < a class = "el" href = "nfca_8hpp_source.html" > nfca.hpp</ a > " </ code >< br />
< code > #include < M5Utility.hpp> </ code >< br />
</ div >< table class = "memberdecls" >
< tr class = "heading" >< td colspan = "2" >< h2 class = "groupheader" >< a id = "namespaces" name = "namespaces" ></ a >
Namespaces</ h2 ></ td ></ tr >
< tr class = "memitem:" >< td class = "memItemLeft" align = "right" valign = "top" > namespace   </ td >< td class = "memItemRight" valign = "bottom" >< a class = "el" href = "namespacem5.html" > m5</ a ></ td ></ tr >
< tr class = "memdesc:namespacem5" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Top level namespace of M5stack. < br /></ td ></ tr >
< tr class = "separator:" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
</ table >< table class = "memberdecls" >
< tr class = "heading" >< td colspan = "2" >< h2 class = "groupheader" >< a id = "func-members" name = "func-members" ></ a >
Functions</ h2 ></ td ></ tr >
< tr class = "memitem:a9de505e4515436fb3b2ab99ffd6d1fc0" id = "r_a9de505e4515436fb3b2ab99ffd6d1fc0" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a9de505e4515436fb3b2ab99ffd6d1fc0" name = "a9de505e4515436fb3b2ab99ffd6d1fc0" ></ a >
uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_number_of_blocks</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a9de505e4515436fb3b2ab99ffd6d1fc0" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the number of blocks. < br /></ td ></ tr >
< tr class = "separator:a9de505e4515436fb3b2ab99ffd6d1fc0" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a90f81b2afbf160114f08f351e7b6c16f" id = "r_a90f81b2afbf160114f08f351e7b6c16f" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a90f81b2afbf160114f08f351e7b6c16f" name = "a90f81b2afbf160114f08f351e7b6c16f" ></ a >
uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_number_of_user_blocks</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a90f81b2afbf160114f08f351e7b6c16f" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the number of user blocks. < br /></ td ></ tr >
< tr class = "separator:a90f81b2afbf160114f08f351e7b6c16f" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:aad24687ca20e8b303110f5bd6b399263" id = "r_aad24687ca20e8b303110f5bd6b399263" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "aad24687ca20e8b303110f5bd6b399263" name = "aad24687ca20e8b303110f5bd6b399263" ></ a >
uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_user_area_size</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:aad24687ca20e8b303110f5bd6b399263" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the user area bytes. < br /></ td ></ tr >
< tr class = "separator:aad24687ca20e8b303110f5bd6b399263" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a3e93f331f794cfd3ec5e1c7115e7bef5" id = "r_a3e93f331f794cfd3ec5e1c7115e7bef5" >< td class = "memItemLeft" align = "right" valign = "top" > uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< a class = "el" href = "#a3e93f331f794cfd3ec5e1c7115e7bef5" > m5::nfc::a::get_unit_size</ a > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a3e93f331f794cfd3ec5e1c7115e7bef5" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Get the unit size of 1 block / 1 page. < br /></ td ></ tr >
< tr class = "separator:a3e93f331f794cfd3ec5e1c7115e7bef5" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a676326bf06691aca5ec34684cb005d67" id = "r_a676326bf06691aca5ec34684cb005d67" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a676326bf06691aca5ec34684cb005d67" name = "a676326bf06691aca5ec34684cb005d67" ></ a >
uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_number_of_sectors</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a676326bf06691aca5ec34684cb005d67" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the number of sectors. < br /></ td ></ tr >
< tr class = "separator:a676326bf06691aca5ec34684cb005d67" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:af1221607496388f9a78ea472230e68ba" id = "r_af1221607496388f9a78ea472230e68ba" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "af1221607496388f9a78ea472230e68ba" name = "af1221607496388f9a78ea472230e68ba" ></ a >
uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_first_user_block</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:af1221607496388f9a78ea472230e68ba" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the first user area block. < br /></ td ></ tr >
< tr class = "separator:af1221607496388f9a78ea472230e68ba" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a56472040cbc607773f2dd4d64e7ad3d3" id = "r_a56472040cbc607773f2dd4d64e7ad3d3" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a56472040cbc607773f2dd4d64e7ad3d3" name = "a56472040cbc607773f2dd4d64e7ad3d3" ></ a >
uint16_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_last_user_block</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a56472040cbc607773f2dd4d64e7ad3d3" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the last user area block. < br /></ td ></ tr >
< tr class = "separator:a56472040cbc607773f2dd4d64e7ad3d3" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:ad5568cdfb2f1c3f2e8b866a504615de6" id = "r_ad5568cdfb2f1c3f2e8b866a504615de6" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "ad5568cdfb2f1c3f2e8b866a504615de6" name = "ad5568cdfb2f1c3f2e8b866a504615de6" ></ a >
bool  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::is_user_block</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t, const uint16_t block)</ td ></ tr >
< tr class = "memdesc:ad5568cdfb2f1c3f2e8b866a504615de6" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Is block user area? < br /></ td ></ tr >
< tr class = "separator:ad5568cdfb2f1c3f2e8b866a504615de6" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a5f4eb62eb93a95c6f3d8a82ffc1dfa8a" id = "r_a5f4eb62eb93a95c6f3d8a82ffc1dfa8a" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a5f4eb62eb93a95c6f3d8a82ffc1dfa8a" name = "a5f4eb62eb93a95c6f3d8a82ffc1dfa8a" ></ a >
< a class = "el" href = "nfc_8hpp.html#a14c7cd97b5b6e6bef9a0485ee5b430a3" > file_system_feature_t</ a >   </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_file_system_feature</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a5f4eb62eb93a95c6f3d8a82ffc1dfa8a" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Get file system fearure bits. < br /></ td ></ tr >
< tr class = "separator:a5f4eb62eb93a95c6f3d8a82ffc1dfa8a" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:aba956d86d9cb908086a4e3b3b55b8bd6" id = "r_aba956d86d9cb908086a4e3b3b55b8bd6" >< td class = "memItemLeft" align = "right" valign = "top" >< a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a >   </ td >< td class = "memItemRight" valign = "bottom" >< a class = "el" href = "#aba956d86d9cb908086a4e3b3b55b8bd6" > m5::nfc::a::sak_to_type</ a > (const uint8_t sak)</ td ></ tr >
< tr class = "memdesc:aba956d86d9cb908086a4e3b3b55b8bd6" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Inferring the type from SAK. < br /></ td ></ tr >
< tr class = "separator:aba956d86d9cb908086a4e3b3b55b8bd6" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a1c36af0eeed9f0cae6f19adeaac0522b" id = "r_a1c36af0eeed9f0cae6f19adeaac0522b" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a1c36af0eeed9f0cae6f19adeaac0522b" name = "a1c36af0eeed9f0cae6f19adeaac0522b" ></ a >
< a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a >   </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::version3_to_type</ b > (const uint8_t info[8])</ td ></ tr >
< tr class = "memdesc:a1c36af0eeed9f0cae6f19adeaac0522b" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Inferring the type from GetVersion L3. < br /></ td ></ tr >
< tr class = "separator:a1c36af0eeed9f0cae6f19adeaac0522b" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a897ff51a5eccfd505aeec8f2c66c7e31" id = "r_a897ff51a5eccfd505aeec8f2c66c7e31" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a897ff51a5eccfd505aeec8f2c66c7e31" name = "a897ff51a5eccfd505aeec8f2c66c7e31" ></ a >
< a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a >   </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::version4_to_type</ b > (uint8_t & sub, const uint8_t info[8])</ td ></ tr >
< tr class = "memdesc:a897ff51a5eccfd505aeec8f2c66c7e31" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Inferring the type from GetVersion L4. < br /></ td ></ tr >
< tr class = "separator:a897ff51a5eccfd505aeec8f2c66c7e31" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:ada4876b0d15c060036b8f88ee1e81297" id = "r_ada4876b0d15c060036b8f88ee1e81297" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "ada4876b0d15c060036b8f88ee1e81297" name = "ada4876b0d15c060036b8f88ee1e81297" ></ a >
< a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a >   </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::historical_bytes_to_type</ b > (uint8_t & sub, const uint16_t atqa, const uint8_t sak, const uint8_t *bytes, const uint8_t len)</ td ></ tr >
< tr class = "memdesc:ada4876b0d15c060036b8f88ee1e81297" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Historical bytes to type. < br /></ td ></ tr >
< tr class = "separator:ada4876b0d15c060036b8f88ee1e81297" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:acf8a3d3a8f2d6c01750bc4b7b99a9472" id = "r_acf8a3d3a8f2d6c01750bc4b7b99a9472" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "acf8a3d3a8f2d6c01750bc4b7b99a9472" name = "acf8a3d3a8f2d6c01750bc4b7b99a9472" ></ a >
const uint8_t *  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_version3_response</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:acf8a3d3a8f2d6c01750bc4b7b99a9472" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Gets the < a class = "el" href = "nfca_8hpp.html#a1a21e28554c0dc7d49466fff910e90aca3e4d39d03ce99d4daaab3749af67ff13" title = "NTAG 21x/UL EV1,Nano Gets the version information." > GET_VERSION(L3)</ a > response for emulation. < br /></ td ></ tr >
< tr class = "separator:acf8a3d3a8f2d6c01750bc4b7b99a9472" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a2f00ebbaee2d5c4267682a346251feaa" id = "r_a2f00ebbaee2d5c4267682a346251feaa" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a2f00ebbaee2d5c4267682a346251feaa" name = "a2f00ebbaee2d5c4267682a346251feaa" ></ a >
uint8_t  </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::calculate_bcc8</ b > (const uint8_t *data, const uint32_t len)</ td ></ tr >
< tr class = "memdesc:a2f00ebbaee2d5c4267682a346251feaa" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Calculate bcc8. < br /></ td ></ tr >
< tr class = "separator:a2f00ebbaee2d5c4267682a346251feaa" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
< tr class = "memitem:a2b812e490b87a87814c33bb3f3b64904" id = "r_a2b812e490b87a87814c33bb3f3b64904" >< td class = "memItemLeft" align = "right" valign = "top" >< a id = "a2b812e490b87a87814c33bb3f3b64904" name = "a2b812e490b87a87814c33bb3f3b64904" ></ a >
< a class = "el" href = "nfc_8hpp.html#a952a1a2c9c08aa278d2aadafe02a5cd1" > m5::nfc::NFCForumTag</ a >   </ td >< td class = "memItemRight" valign = "bottom" >< b > m5::nfc::a::get_nfc_forum_tag_type</ b > (const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > t)</ td ></ tr >
< tr class = "memdesc:a2b812e490b87a87814c33bb3f3b64904" >< td class = "mdescLeft" >   </ td >< td class = "mdescRight" > Get NFC Forum Tag Type from < a class = "el" href = "structm5_1_1nfc_1_1a_1_1_p_i_c_c.html" title = "PICC for NFC-A." > PICC</ a > type. < br /></ td ></ tr >
< tr class = "separator:a2b812e490b87a87814c33bb3f3b64904" >< td class = "memSeparator" colspan = "2" >   </ td ></ tr >
</ table >
< a name = "details" id = "details" ></ a >< h2 class = "groupheader" > Detailed Description</ h2 >
< div class = "textblock" >< p > NFC-A definitions. </ p >
</ div >< h2 class = "groupheader" > Function Documentation</ h2 >
< a id = "a3e93f331f794cfd3ec5e1c7115e7bef5" name = "a3e93f331f794cfd3ec5e1c7115e7bef5" ></ a >
< h2 class = "memtitle" >< span class = "permalink" >< a href = "#a3e93f331f794cfd3ec5e1c7115e7bef5" > ◆  </ a ></ span > get_unit_size()</ h2 >
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< td class = "memname" > uint16_t m5::nfc::a::get_unit_size </ td >
< td > (</ td >
< td class = "paramtype" > const < a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a ></ td > < td class = "paramname" >< span class = "paramname" >< em > t</ em ></ span ></ td >< td > )</ td >
< td ></ td >
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< p > Get the unit size of 1 block / 1 page. </ p >
< dl class = "retval" >< dt > Return values</ dt >< dd >
< table class = "retval" >
< tr >< td class = "paramname" > !=</ td >< td > 0 Unit size </ td ></ tr >
< tr >< td class = "paramname" > ==</ td >< td > 0 Does not have a unit size </ td ></ tr >
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< a id = "aba956d86d9cb908086a4e3b3b55b8bd6" name = "aba956d86d9cb908086a4e3b3b55b8bd6" ></ a >
< h2 class = "memtitle" >< span class = "permalink" >< a href = "#aba956d86d9cb908086a4e3b3b55b8bd6" > ◆  </ a ></ span > sak_to_type()</ h2 >
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< td class = "memname" >< a class = "el" href = "nfca_8hpp.html#ab84bb90cd0fe7b0457f4d2a7969da0d9" > Type</ a > m5::nfc::a::sak_to_type </ td >
< td > (</ td >
< td class = "paramtype" > const uint8_t</ td > < td class = "paramname" >< span class = "paramname" >< em > sak</ em ></ span ></ td >< td > )</ td >
< td ></ td >
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< p > Inferring the type from SAK. </ p >
< dl class = "section return" >< dt > Returns</ dt >< dd > Type </ dd ></ dl >
< dl class = "section warning" >< dt > Warning</ dt >< dd > This is a preliminary diagnosis, a more accurate diagnosis is required </ dd ></ dl >
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