€•ÁFŒsphinx.addnodes”Œdocument”“”)�”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)�”}”(hhh]”(hŒ pending_xref”“”)�”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…”�”}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ5/translations/zh_CN/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)�”}”(hhh]”hŒChinese (Traditional)”…”�”}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ5/translations/zh_TW/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)�”}”(hhh]”hŒItalian”…”�”}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ5/translations/it_IT/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)�”}”(hhh]”hŒJapanese”…”�”}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ5/translations/ja_JP/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)�”}”(hhh]”hŒKorean”…”�”}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ5/translations/ko_KR/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)�”}”(hhh]”hŒPortuguese (Brazilian)”…”�”}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ5/translations/pt_BR/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)�”}”(hhh]”hŒSpanish”…”�”}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ5/translations/sp_SP/admin-guide/auxdisplay/cfag12864b”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)�”}”(hhh]”(hŒtitle”“”)�”}”(hŒ#cfag12864b LCD Driver Documentation”h]”hŒ#cfag12864b LCD Driver Documentation”…”�”}”(hh¼h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhh·h²hh³ŒO/var/lib/git/docbuild/linux/Documentation/admin-guide/auxdisplay/cfag12864b.rst”h´KubhŒ field_list”“”)�”}”(hhh]”(hŒfield”“”)�”}”(hhh]”(hŒ field_name”“”)�”}”(hŒLicense”h]”hŒLicense”…”�”}”(hh×h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhhÒh³hÊh´KubhŒ field_body”“”)�”}”(hŒGPLv2”h]”hŒ paragraph”“”)�”}”(hhéh]”hŒGPLv2”…”�”}”(hhíh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khhçubah}”(h]”h ]”h"]”h$]”h&]”uh1håhhÒubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhhÍh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒAuthor & Maintainer”h]”hŒAuthor & Maintainer”…”�”}”(hj h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjh³hÊh´Kubhæ)�”}”(hŒMiguel Ojeda ”h]”hì)�”}”(hjh]”(hŒMiguel Ojeda <”…”�”}”(hjh²hh³Nh´NubhŒ reference”“”)�”}”(hŒojeda@kernel.org”h]”hŒojeda@kernel.org”…”�”}”(hj$h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”Œmailto:ojeda@kernel.org”uh1j"hjubhŒ>”…”�”}”(hjh²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khjubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhhÍh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒDate”h]”hŒDate”…”�”}”(hjMh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjJh³hÊh´Kubhæ)�”}”(hŒ 2006-10-27 ”h]”hì)�”}”(hŒ 2006-10-27”h]”hŒ 2006-10-27”…”�”}”(hj_h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khj[ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjJubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhhÍh²hubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËhh·h²hh³hÊh´KubhŒcomment”“”)�”}”(hŒUINDEX 1. DRIVER INFORMATION 2. DEVICE INFORMATION 3. WIRING 4. USERSPACE PROGRAMMING”h]”hŒUINDEX 1. DRIVER INFORMATION 2. DEVICE INFORMATION 3. WIRING 4. USERSPACE PROGRAMMING”…”�”}”hj�sbah}”(h]”h ]”h"]”h$]”h&]”Œ xml:space”Œpreserve”uh1jhh·h²hh³hÊh´Kubh¶)�”}”(hhh]”(h»)�”}”(hŒ1. Driver Information”h]”hŒ1. Driver Information”…”�”}”(hj”h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj‘h²hh³hÊh´Kubhì)�”}”(hŒ&This driver supports a cfag12864b LCD.”h]”hŒ&This driver supports a cfag12864b LCD.”…”�”}”(hj¢h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khj‘h²hubeh}”(h]”Œdriver-information”ah ]”h"]”Œ1. driver information”ah$]”h&]”uh1hµhh·h²hh³hÊh´Kubh¶)�”}”(hhh]”(h»)�”}”(hŒ2. Device Information”h]”hŒ2. Device Information”…”�”}”(hj»h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj¸h²hh³hÊh´KubhÌ)�”}”(hhh]”(hÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Manufacturer”h]”hŒ Manufacturer”…”�”}”(hjÏh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjÌh³hÊh´Kubhæ)�”}”(hŒ Crystalfontz”h]”hì)�”}”(hjßh]”hŒ Crystalfontz”…”�”}”(hjáh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´KhjÝubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjÌubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Device Name”h]”hŒ Device Name”…”�”}”(hjýh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjúh³hÊh´Kubhæ)�”}”(hŒCrystalfontz 12864b LCD Series”h]”hì)�”}”(hj h]”hŒCrystalfontz 12864b LCD Series”…”�”}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khj ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjúubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Device Code”h]”hŒ Device Code”…”�”}”(hj+h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhj(h³hÊh´Kubhæ)�”}”(hŒ cfag12864b”h]”hì)�”}”(hj;h]”hŒ cfag12864b”…”�”}”(hj=h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khj9ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhj(ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒWebpage”h]”hŒWebpage”…”�”}”(hjYh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjVh³hÊh´Kubhæ)�”}”(hŒhttp://www.crystalfontz.com”h]”hì)�”}”(hjih]”j#)�”}”(hjih]”hŒhttp://www.crystalfontz.com”…”�”}”(hjnh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”jiuh1j"hjkubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Khjgubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjVubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒDevice Webpage”h]”hŒDevice Webpage”…”�”}”(hj‘h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjŽh³hÊh´Kubhæ)�”}”(hŒ,http://www.crystalfontz.com/products/12864b/”h]”hì)�”}”(hj¡h]”j#)�”}”(hj¡h]”hŒ,http://www.crystalfontz.com/products/12864b/”…”�”}”(hj¦h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”j¡uh1j"hj£ubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´KhjŸubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjŽubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´KhjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒType”h]”hŒType”…”�”}”(hjÉh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjÆh³hÊh´Kubhæ)�”}”(hŒLCD (Liquid Crystal Display)”h]”hì)�”}”(hjÙh]”hŒLCD (Liquid Crystal Display)”…”�”}”(hjÛh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K hj×ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjÆubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒWidth”h]”hŒWidth”…”�”}”(hj÷h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjôh³hÊh´Kubhæ)�”}”(hŒ128”h]”hì)�”}”(hjh]”hŒ128”…”�”}”(hj h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K!hjubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjôubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K!hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒHeight”h]”hŒHeight”…”�”}”(hj%h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhj"h³hÊh´Kubhæ)�”}”(hŒ64”h]”hì)�”}”(hj5h]”hŒ64”…”�”}”(hj7h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K"hj3ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhj"ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K"hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒColors”h]”hŒColors”…”�”}”(hjSh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjPh³hÊh´Kubhæ)�”}”(hŒ2 (B/N)”h]”hì)�”}”(hjch]”hŒ2 (B/N)”…”�”}”(hjeh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K#hjaubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjPubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K#hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Controller”h]”hŒ Controller”…”�”}”(hj�h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhj~h³hÊh´Kubhæ)�”}”(hŒks0108”h]”hì)�”}”(hj‘h]”hŒks0108”…”�”}”(hj“h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K$hj�ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhj~ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K$hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Controllers”h]”hŒ Controllers”…”�”}”(hj¯h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhj¬h³hÊh´Kubhæ)�”}”(hŒ2”h]”hì)�”}”(hj¿h]”hŒ2”…”�”}”(hjÁh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K%hj½ubah}”(h]”h ]”h"]”h$]”h&]”uh1håhj¬ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K%hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒPages”h]”hŒPages”…”�”}”(hjÝh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjÚh³hÊh´Kubhæ)�”}”(hŒ8 each controller”h]”hì)�”}”(hjíh]”hŒ8 each controller”…”�”}”(hjïh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K&hjëubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjÚubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K&hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Addresses”h]”hŒ Addresses”…”�”}”(hj h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjh³hÊh´Kubhæ)�”}”(hŒ 64 each page”h]”hì)�”}”(hjh]”hŒ 64 each page”…”�”}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K'hjubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K'hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Data size”h]”hŒ Data size”…”�”}”(hj9h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhj6h³hÊh´Kubhæ)�”}”(hŒ1 byte each address”h]”hì)�”}”(hjIh]”hŒ1 byte each address”…”�”}”(hjKh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K(hjGubah}”(h]”h ]”h"]”h$]”h&]”uh1håhj6ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K(hjÉh²hubhÑ)�”}”(hhh]”(hÖ)�”}”(hŒ Memory size”h]”hŒ Memory size”…”�”}”(hjgh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÕhjdh³hÊh´Kubhæ)�”}”(hŒ'2 * 8 * 64 * 1 = 1024 bytes = 1 Kbyte ”h]”hì)�”}”(hŒ%2 * 8 * 64 * 1 = 1024 bytes = 1 Kbyte”h]”hŒ%2 * 8 * 64 * 1 = 1024 bytes = 1 Kbyte”…”�”}”(hjyh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K)hjuubah}”(h]”h ]”h"]”h$]”h&]”uh1håhjdubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÐh³hÊh´K)hjÉh²hubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËhj¸h²hh³hÊh´Kubeh}”(h]”Œdevice-information”ah ]”h"]”Œ2. device information”ah$]”h&]”uh1hµhh·h²hh³hÊh´Kubh¶)�”}”(hhh]”(h»)�”}”(hŒ 3. Wiring”h]”hŒ 3. Wiring”…”�”}”(hj¤h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj¡h²hh³hÊh´K-ubhì)�”}”(hŒ5The cfag12864b LCD Series don't have official wiring.”h]”hŒ7The cfag12864b LCD Series don’t have official wiring.”…”�”}”(hj²h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K/hj¡h²hubhì)�”}”(hŒ9The common wiring is done to the parallel port as shown::”h]”hŒ8The common wiring is done to the parallel port as shown:”…”�”}”(hjÀh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K1hj¡h²hubhŒ literal_block”“”)�”}”(hX¥Parallel Port cfag12864b Name Pin# Pin# Name Strobe ( 1)------------------------------(17) Enable Data 0 ( 2)------------------------------( 4) Data 0 Data 1 ( 3)------------------------------( 5) Data 1 Data 2 ( 4)------------------------------( 6) Data 2 Data 3 ( 5)------------------------------( 7) Data 3 Data 4 ( 6)------------------------------( 8) Data 4 Data 5 ( 7)------------------------------( 9) Data 5 Data 6 ( 8)------------------------------(10) Data 6 Data 7 ( 9)------------------------------(11) Data 7 (10) [+5v]---( 1) Vdd (11) [GND]---( 2) Ground (12) [+5v]---(14) Reset (13) [GND]---(15) Read / Write Line (14)------------------------------(13) Controller Select 1 (15) Init (16)------------------------------(12) Controller Select 2 Select (17)------------------------------(16) Data / Instruction Ground (18)---[GND] [+5v]---(19) LED + Ground (19)---[GND] Ground (20)---[GND] E A Values: Ground (21)---[GND] [GND]---[P1]---(18) Vee - R = Resistor = 22 ohm Ground (22)---[GND] | - P1 = Preset = 10 Kohm Ground (23)---[GND] ---- S ------( 3) V0 - P2 = Preset = 1 Kohm Ground (24)---[GND] | | Ground (25)---[GND] [GND]---[P2]---[R]---(20) LED -”h]”hX¥Parallel Port cfag12864b Name Pin# Pin# Name Strobe ( 1)------------------------------(17) Enable Data 0 ( 2)------------------------------( 4) Data 0 Data 1 ( 3)------------------------------( 5) Data 1 Data 2 ( 4)------------------------------( 6) Data 2 Data 3 ( 5)------------------------------( 7) Data 3 Data 4 ( 6)------------------------------( 8) Data 4 Data 5 ( 7)------------------------------( 9) Data 5 Data 6 ( 8)------------------------------(10) Data 6 Data 7 ( 9)------------------------------(11) Data 7 (10) [+5v]---( 1) Vdd (11) [GND]---( 2) Ground (12) [+5v]---(14) Reset (13) [GND]---(15) Read / Write Line (14)------------------------------(13) Controller Select 1 (15) Init (16)------------------------------(12) Controller Select 2 Select (17)------------------------------(16) Data / Instruction Ground (18)---[GND] [+5v]---(19) LED + Ground (19)---[GND] Ground (20)---[GND] E A Values: Ground (21)---[GND] [GND]---[P1]---(18) Vee - R = Resistor = 22 ohm Ground (22)---[GND] | - P1 = Preset = 10 Kohm Ground (23)---[GND] ---- S ------( 3) V0 - P2 = Preset = 1 Kohm Ground (24)---[GND] | | Ground (25)---[GND] [GND]---[P2]---[R]---(20) LED -”…”�”}”hjÐsbah}”(h]”h ]”h"]”h$]”h&]”j�j�uh1jÎh³hÊh´K3hj¡h²hubeh}”(h]”Œwiring”ah ]”h"]”Œ 3. wiring”ah$]”h&]”uh1hµhh·h²hh³hÊh´K-ubh¶)�”}”(hhh]”(h»)�”}”(hŒ4. Userspace Programming”h]”hŒ4. Userspace Programming”…”�”}”(hjéh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhjæh²hh³hÊh´KSubhì)�”}”(hŒ;The cfag12864bfb describes a framebuffer device (/dev/fbX).”h]”hŒ;The cfag12864bfb describes a framebuffer device (/dev/fbX).”…”�”}”(hj÷h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´KUhjæh²hubhì)�”}”(hŒŸIt has a size of 1024 bytes = 1 Kbyte. Each bit represents one pixel. If the bit is high, the pixel will turn on. If the pixel is low, the pixel will turn off.”h]”hŒŸIt has a size of 1024 bytes = 1 Kbyte. Each bit represents one pixel. If the bit is high, the pixel will turn on. If the pixel is low, the pixel will turn off.”…”�”}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´KWhjæh²hubhì)�”}”(hŒ‡You can use the framebuffer as a file: fopen, fwrite, fclose... Although the LCD won't get updated until the next refresh time arrives.”h]”hŒ‰You can use the framebuffer as a file: fopen, fwrite, fclose... Although the LCD won’t get updated until the next refresh time arrives.”…”�”}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K[hjæh²hubhì)�”}”(hŒjAlso, you can mmap the framebuffer: open & mmap, munmap & close... which is the best option for most uses.”h]”hŒjAlso, you can mmap the framebuffer: open & mmap, munmap & close... which is the best option for most uses.”…”�”}”(hj!h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´K^hjæh²hubhì)�”}”(hŒpCheck samples/auxdisplay/cfag12864b-example.c for a real working userspace complete program with usage examples.”h]”hŒpCheck samples/auxdisplay/cfag12864b-example.c for a real working userspace complete program with usage examples.”…”�”}”(hj/h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÊh´Kahjæh²hubeh}”(h]”Œuserspace-programming”ah ]”h"]”Œ4. userspace programming”ah$]”h&]”uh1hµhh·h²hh³hÊh´KSubeh}”(h]”Œ#cfag12864b-lcd-driver-documentation”ah ]”h"]”Œ#cfag12864b lcd driver documentation”ah$]”h&]”uh1hµhhh²hh³hÊh´Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”hÊuh1hŒcurrent_source”NŒ current_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)�”}”(hºNŒ generator”NŒ datestamp”NŒ source_link”NŒ source_url”NŒ toc_backlinks”Œentry”Œfootnote_backlinks”KŒ sectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒ strip_classes”NŒ report_level”KŒ halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ traceback”ˆŒinput_encoding”Œ utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”jpŒerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œ language_code”Œen”Œrecord_dependencies”NŒconfig”NŒ id_prefix”hŒauto_id_prefix”Œid”Œ dump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”hÊŒ _destination”NŒ _config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒ raw_enabled”KŒline_length_limit”M'Œpep_references”NŒ pep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒ rfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œ smart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œ docinfo_xform”KŒsectsubtitle_xform”‰Œ image_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(jJjGjµj²jžj›jãjàjBj?uŒ nametypes”}”(jJ‰jµ‰jž‰jã‰jB‰uh}”(jGh·j²j‘j›j¸jàj¡j?jæuŒ footnote_refs”}”Œ citation_refs”}”Œ autofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ footnotes”]”Œ citations”]”Œautofootnote_start”KŒsymbol_footnote_start”KŒ id_counter”Œ collections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œ transformer”NŒ include_log”]”Œ decoration”Nh²hub.