commit f4f70853c115f4c6b6ad493744321941d5eb7ae0 Author: Jeff Wang Date: Wed Mar 20 00:34:51 2019 -0400 initial stc rpn calculator project diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..7cc0e8b --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +*.hex +build/* +.project +.cproject +.settings/* + diff --git a/LICENCE.md b/LICENCE.md new file mode 100644 index 0000000..01a7a80 --- /dev/null +++ b/LICENCE.md @@ -0,0 +1,675 @@ +### GNU GENERAL PUBLIC LICENSE + +Version 3, 29 June 2007 + +Copyright (C) 2007 Free Software Foundation, Inc. + + +Everyone is permitted to copy and distribute verbatim copies of this +license document, but changing it is not allowed. + +### Preamble + +The GNU General Public License is a free, copyleft license for +software and other kinds of works. + +The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom +to share and change all versions of a program--to make sure it remains +free software for all its users. We, the Free Software Foundation, use +the GNU General Public License for most of our software; it applies +also to any other work released this way by its authors. You can apply +it to your programs, too. + +When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. + +To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. 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If such problems arise substantially in +other domains, we stand ready to extend this provision to those +domains in future versions of the GPL, as needed to protect the +freedom of users. + +Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish +to avoid the special danger that patents applied to a free program +could make it effectively proprietary. To prevent this, the GPL +assures that patents cannot be used to render the program non-free. + +The precise terms and conditions for copying, distribution and +modification follow. + +### TERMS AND CONDITIONS + +#### 0. Definitions. + +"This License" refers to version 3 of the GNU General Public License. + +"Copyright" also means copyright-like laws that apply to other kinds +of works, such as semiconductor masks. + +"The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + +To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of +an exact copy. The resulting work is called a "modified version" of +the earlier work or a work "based on" the earlier work. + +A "covered work" means either the unmodified Program or a work based +on the Program. + +To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. 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This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + +You may make, run and propagate covered works that you do not convey, +without conditions so long as your license otherwise remains in force. +You may convey covered works to others for the sole purpose of having +them make modifications exclusively for you, or provide you with +facilities for running those works, provided that you comply with the +terms of this License in conveying all material for which you do not +control copyright. Those thus making or running the covered works for +you must do so exclusively on your behalf, under your direction and +control, on terms that prohibit them from making any copies of your +copyrighted material outside their relationship with you. + +Conveying under any other circumstances is permitted solely under the +conditions stated below. Sublicensing is not allowed; section 10 makes +it unnecessary. + +#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law. + +No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + +When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such +circumvention is effected by exercising rights under this License with +respect to the covered work, and you disclaim any intention to limit +operation or modification of the work as a means of enforcing, against +the work's users, your or third parties' legal rights to forbid +circumvention of technological measures. + +#### 4. Conveying Verbatim Copies. + +You may convey verbatim copies of the Program's source code as you +receive it, in any medium, provided that you conspicuously and +appropriately publish on each copy an appropriate copyright notice; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + +You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + +#### 5. Conveying Modified Source Versions. + +You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these +conditions: + +- a) The work must carry prominent notices stating that you modified + it, and giving a relevant date. +- b) The work must carry prominent notices stating that it is + released under this License and any conditions added under + section 7. This requirement modifies the requirement in section 4 + to "keep intact all notices". +- c) You must license the entire work, as a whole, under this + License to anyone who comes into possession of a copy. This + License will therefore apply, along with any applicable section 7 + additional terms, to the whole of the work, and all its parts, + regardless of how they are packaged. This License gives no + permission to license the work in any other way, but it does not + invalidate such permission if you have separately received it. +- d) If the work has interactive user interfaces, each must display + Appropriate Legal Notices; however, if the Program has interactive + interfaces that do not display Appropriate Legal Notices, your + work need not make them do so. + +A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + +#### 6. Conveying Non-Source Forms. + +You may convey a covered work in object code form under the terms of +sections 4 and 5, provided that you also convey the machine-readable +Corresponding Source under the terms of this License, in one of these +ways: + +- a) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by the + Corresponding Source fixed on a durable physical medium + customarily used for software interchange. +- b) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by a + written offer, valid for at least three years and valid for as + long as you offer spare parts or customer support for that product + model, to give anyone who possesses the object code either (1) a + copy of the Corresponding Source for all the software in the + product that is covered by this License, on a durable physical + medium customarily used for software interchange, for a price no + more than your reasonable cost of physically performing this + conveying of source, or (2) access to copy the Corresponding + Source from a network server at no charge. +- c) Convey individual copies of the object code with a copy of the + written offer to provide the Corresponding Source. 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But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + +The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or +updates for a work that has been modified or installed by the +recipient, or for the User Product in which it has been modified or +installed. Access to a network may be denied when the modification +itself materially and adversely affects the operation of the network +or violates the rules and protocols for communication across the +network. + +Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + +#### 7. Additional Terms. + +"Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + +When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + +Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders +of that material) supplement the terms of this License with terms: + +- a) Disclaiming warranty or limiting liability differently from the + terms of sections 15 and 16 of this License; or +- b) Requiring preservation of specified reasonable legal notices or + author attributions in that material or in the Appropriate Legal + Notices displayed by works containing it; or +- c) Prohibiting misrepresentation of the origin of that material, + or requiring that modified versions of such material be marked in + reasonable ways as different from the original version; or +- d) Limiting the use for publicity purposes of names of licensors + or authors of the material; or +- e) Declining to grant rights under trademark law for use of some + trade names, trademarks, or service marks; or +- f) Requiring indemnification of licensors and authors of that + material by anyone who conveys the material (or modified versions + of it) with contractual assumptions of liability to the recipient, + for any liability that these contractual assumptions directly + impose on those licensors and authors. + +All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + +If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + +Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; the +above requirements apply either way. + +#### 8. Termination. + +You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + +However, if you cease all violation of this License, then your license +from a particular copyright holder is reinstated (a) provisionally, +unless and until the copyright holder explicitly and finally +terminates your license, and (b) permanently, if the copyright holder +fails to notify you of the violation by some reasonable means prior to +60 days after the cessation. + +Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + +Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + +#### 9. Acceptance Not Required for Having Copies. + +You are not required to accept this License in order to receive or run +a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + +#### 10. Automatic Licensing of Downstream Recipients. + +Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + +An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + +You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + +#### 11. Patents. + +A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + +A contributor's "essential patent claims" are all patent claims owned +or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + +Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + +In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + +If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + +If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + +A patent license is "discriminatory" if it does not include within the +scope of its coverage, prohibits the exercise of, or is conditioned on +the non-exercise of one or more of the rights that are specifically +granted under this License. You may not convey a covered work if you +are a party to an arrangement with a third party that is in the +business of distributing software, under which you make payment to the +third party based on the extent of your activity of conveying the +work, and under which the third party grants, to any of the parties +who would receive the covered work from you, a discriminatory patent +license (a) in connection with copies of the covered work conveyed by +you (or copies made from those copies), or (b) primarily for and in +connection with specific products or compilations that contain the +covered work, unless you entered into that arrangement, or that patent +license was granted, prior to 28 March 2007. + +Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + +#### 12. No Surrender of Others' Freedom. + +If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under +this License and any other pertinent obligations, then as a +consequence you may not convey it at all. For example, if you agree to +terms that obligate you to collect a royalty for further conveying +from those to whom you convey the Program, the only way you could +satisfy both those terms and this License would be to refrain entirely +from conveying the Program. + +#### 13. Use with the GNU Affero General Public License. + +Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + +#### 14. Revised Versions of this License. + +The Free Software Foundation may publish revised and/or new versions +of the GNU General Public License from time to time. Such new versions +will be similar in spirit to the present version, but may differ in +detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies that a certain numbered version of the GNU General Public +License "or any later version" applies to it, you have the option of +following the terms and conditions either of that numbered version or +of any later version published by the Free Software Foundation. If the +Program does not specify a version number of the GNU General Public +License, you may choose any version ever published by the Free +Software Foundation. + +If the Program specifies that a proxy can decide which future versions +of the GNU General Public License can be used, that proxy's public +statement of acceptance of a version permanently authorizes you to +choose that version for the Program. + +Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + +#### 15. Disclaimer of Warranty. + +THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT +WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND +PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE +DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR +CORRECTION. + +#### 16. Limitation of Liability. + +IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR +CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES +ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT +NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR +LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM +TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER +PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. + +#### 17. Interpretation of Sections 15 and 16. + +If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + +END OF TERMS AND CONDITIONS + +### How to Apply These Terms to Your New Programs + +If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these +terms. + +To do so, attach the following notices to the program. It is safest to +attach them to the start of each source file to most effectively state +the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper +mail. + +If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands \`show w' and \`show c' should show the +appropriate parts of the General Public License. Of course, your +program's commands might be different; for a GUI interface, you would +use an "about box". + +You should also get your employer (if you work as a programmer) or +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. For more information on this, and how to apply and follow +the GNU GPL, see . + +The GNU General Public License does not permit incorporating your +program into proprietary programs. If your program is a subroutine +library, you may consider it more useful to permit linking proprietary +applications with the library. If this is what you want to do, use the +GNU Lesser General Public License instead of this License. But first, +please read . \ No newline at end of file diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..07358ee --- /dev/null +++ b/Makefile @@ -0,0 +1,30 @@ +SDCC ?= sdcc +STCCODESIZE ?= 4089 +SDCCOPTS ?= --code-size $(STCCODESIZE) --xram-size 0 --data-loc 0x30 +FLASHFILE ?= main.hex + +SRC = src/lcd.c src/utils.c + +OBJ=$(patsubst src%.c,build%.rel, $(SRC)) + +all: main + +build/%.rel: src/%.c src/%.h + mkdir -p $(dir $@) + $(SDCC) $(SDCCOPTS) -o $@ -c $< + +main: $(OBJ) + $(SDCC) -o build/ src/$@.c $(SDCCOPTS) $(CFLAGS) $^ + @ tail -n 5 build/main.mem | head -n 2 + @ tail -n 1 build/main.mem + cp build/$@.ihx $@.hex + +eeprom: + sed -ne '/:..1/ { s/1/0/2; p }' main.hex > eeprom.hex + +clean: + rm -f *.ihx *.hex *.bin + rm -rf build/* + +cpp: SDCCOPTS+=-E +cpp: main diff --git a/README.md b/README.md new file mode 100644 index 0000000..6e9ffb2 --- /dev/null +++ b/README.md @@ -0,0 +1,4 @@ +# STC DIY Calculator Firmware + +This is a replacement firmware for the diyleyuan calculator using an STC IAP15W413AS microcontroller. This firmware replaces the pre-programmed firmware with a RPN calculator firmware. + diff --git a/src/lcd.c b/src/lcd.c new file mode 100644 index 0000000..f866529 --- /dev/null +++ b/src/lcd.c @@ -0,0 +1,270 @@ +//#define DEBUG + +#include "stc15.h" +#include "utils.h" +#include "lcd.h" + + +#define LCDINC 2 +#define LCDDEC 0 +#define LCDSHIFT 1 +#define LCDNOSHIFT 0 +#define LCDCURSOR 2 +#define LCDNOCURSOR 0 +#define LCDBLINK 1 +#define LCDNOBLINK 0 +#define LCDSCROLL 8 +#define LCDNOSCROLL 0 +#define LCDLEFT 0 +#define LCDRIGHT 4 +#define LCD2LINE 8 +#define LCD1LINE 0 +#define LCD10DOT 4 +#define LCD7DOT 0 + +#define CR 13 // \r +#define TAB 9 // \n +#define LF 10 // \r + + + +static int row, col; +static int OpenFlag = 0; +static int ErrorTimeout = 0; +static int Error = 0; + +#define CLEAR_BIT(port, bit) (port &= ~(_BV(bit))) +#define CLEAR_BITS(port, bits) (port &= ~(bits)) +#define SET_BIT(port, bit) (port |= _BV(bit)) + +//#define DISABLE_INTERRUPTS() __critical{ +//#define ENABLE_INTERRUPTS() } +#define DISABLE_INTERRUPTS() { +#define ENABLE_INTERRUPTS() } + +#define LCD_E P3_5 +#define LCD_RW P3_6 +#define LCD_RS P3_7 +#define LCD_BUSY P2_7 //LCD D7 + +static void outCsrBlindNibble(unsigned char command); +static void outCsrBlind(unsigned char command); +static void outCsr(unsigned char command); +static char readBusy(void); +static void wait_busy(void); +static void to_row(unsigned char row_to); +static void LCD_OutChar(unsigned char c); + +static void outCsrBlindNibble(unsigned char command) { +// CLEAR_BITS(PORTC, _BV(LCD_E) | _BV(LCD_RS) | _BV(LCD_RW)); + P3 &= ~(0x7 << 5); //clear LCD_E, LCD_RS, LCD_RW + _delay_us(50); + P2 = ((command & 0xf) << 4); + //CLEAR_BIT(PORTC, LCD_E); //E = 0 + //CLEAR_BIT(PORTC, LCD_RS); //control + //CLEAR_BIT(PORTC, LCD_RW); //write + _delay_us(100); + LCD_E = 1; + _delay_us(100); + LCD_E = 0; +} + +static void outCsrBlind(unsigned char command) { + outCsrBlindNibble(command >> 4); // ms nibble, E=0, RS=0 + _delay_us(100); + outCsrBlindNibble(command); // ls nibble, E=0, RS=0 + _delay_us(100); // blind cycle 90 us wait +} + +static void outCsr(unsigned char command) { + DISABLE_INTERRUPTS(); + outCsrBlindNibble(command >> 4); // ms nibble, E=0, RS=0 + outCsrBlindNibble(command); // ls nibble, E=0, RS=0 + ENABLE_INTERRUPTS(); + wait_busy(); +} + +#define SET_BUSY_IN() do {P2M1 |= (1<<7); P2M0 &= ~(1<<7);} while(0) +#define SET_BUSY_OUT() do {P2M1 &= ~(1<<7); P2M0 |= (1<<7); } while(0) + +//returns 1 if busy, 0 otherwise +static char readBusy() { + unsigned char oldP2 = P2; + __bit busy; + + LCD_RS = 0; //control + LCD_RW = 1; //read + LCD_E = 1; + SET_BUSY_IN(); + + //wait + _delay_us(100); // blind cycle 100us wait + //read busy flag + busy = LCD_BUSY; + SET_BUSY_OUT(); + LCD_E = 0; + LCD_E = 1; + //wait + _delay_us(100); // blind cycle 100us wait + LCD_E = 0; + P2 = oldP2; + + return busy; +} + +//sets ErrorTimeout flag if busy signal not cleared in time +static void wait_busy() { + unsigned int i; + for (i = 0; i < 100; i++){ + if (!readBusy()){ + return; + } + _delay_ms(1); + } + + ErrorTimeout = 1; + return; +} + +static void LCD_OutChar(unsigned char c) { + unsigned char lower = (c & 0x0f); + DISABLE_INTERRUPTS(); + wait_busy(); + //output upper 4 bits: + LCD_E = 0; + LCD_RS = 1; //data + LCD_RW = 0; //write + P2 = ((c & 0xf0)); + LCD_E = 1; + _delay_us(100); + LCD_E = 0; + //output lower 4 bits: + P2 = ((c & 0xf) << 4); + LCD_E = 1; + _delay_us(100); + LCD_E = 0; + ENABLE_INTERRUPTS(); + wait_busy(); +} + +void LCD_Open(void) { + static int open_error = 0; + if (!OpenFlag) { + //set ports to output + //P2 + P2M1 = 0; + P2M0 = 0xff; + //P3 + P3M1 &= ~(0xfe); + P3M0 |= (0xfe); + + _delay_ms(30); // to allow LCD powerup + outCsrBlindNibble(0x03); // (DL=1 8-bit mode) + _delay_ms(5); // blind cycle 5ms wait + outCsrBlindNibble(0x03); // (DL=1 8-bit mode) + _delay_us(100); // blind cycle 100us wait + outCsrBlindNibble(0x03); // (DL=1 8-bit mode) + _delay_us(100); // blind cycle 100us wait (not called for, but do it anyway) + outCsrBlindNibble(0x02); // DL=1 switch to 4 bit mode (only high 4 bits are sent) + _delay_us(100); // blind cycle 100 us wait + //set increment, no shift + outCsrBlind(0x4 + LCDINC + LCDNOSHIFT); +#ifdef DEBUG + //set display on, cursor on, blink on: + outCsrBlind(0x0c + LCDCURSOR + LCDBLINK); +#else + //set display on, cursor and blink off: + outCsrBlind(0x0c + LCDNOCURSOR + LCDNOBLINK); +#endif + //set display shift on and to the right + outCsrBlind(0x10 + LCDNOSCROLL + LCDRIGHT); + //set 4-bit mode, 2 line, 5x7 display: + outCsrBlind(0x20 + LCD2LINE + LCD7DOT); + //clear display + LCD_Clear(); + _delay_ms(50); + if (!readBusy()) { + OpenFlag = 1; + } else { + open_error = 1; + } + } else { //display already open + open_error = 1; + } +} + +//row and columns indexed from 0 +void LCD_GoTo(unsigned int row_to, unsigned int col_to) { + if (row_to < MAX_ROWS && col_to < MAX_CHARS_PER_LINE) { + outCsr(0x80 + 0x40 * row_to + col_to); //set ddram address to position + row = row_to; + col = col_to; + } else { + Error = 1; + } +} + +static void to_row(unsigned char row_to) { + if (row_to == 0) { + outCsr(0x80);//set address to start of row 0 + row = 0; + } else { + outCsr(0xc0);// set address to row 1 + row = 1; + } + col = 0; +} + +//row indexed from 0 +void LCD_SingleLineGoTo(unsigned int spot_to) { + LCD_GoTo(spot_to / MAX_CHARS_PER_LINE, spot_to % MAX_CHARS_PER_LINE); +} + +void LCD_OutString(const char *string) { + const char *s; + for (s = string; *s; s++) { + TERMIO_PutChar(*s); + } +} + +short TERMIO_PutChar(unsigned char letter) { + if (letter == CR || letter == '\n') { + LCD_Clear(); + } else if (letter == TAB || letter == '\t') { + if (row == 0) { + to_row(1); + } else { + to_row(0); + } + } else { + if (col > MAX_CHARS_PER_LINE) { + if (row == 0) { + to_row(1); + } else { + to_row(0); + } + } + col++; + LCD_OutChar(letter); + } + + return 1; +} + +void LCD_Clear() { + if (OpenFlag) { + outCsr(0x01); + } else { + outCsrBlind(0x01); + } + row = 0; + col = 0; +} + +unsigned char LCD_Timeout_Error(void) { + if (ErrorTimeout != 0) { + return 1; + } + return 0; +} + diff --git a/src/lcd.h b/src/lcd.h new file mode 100644 index 0000000..6213fb3 --- /dev/null +++ b/src/lcd.h @@ -0,0 +1,20 @@ +#ifndef LCD_H +#define LCD_H + + +#define MAX_CHARS_PER_LINE 15 +#define MAX_ROWS 2 + +void LCD_Open(void); +void LCD_Clear(void); +void LCD_GoTo(unsigned int row, unsigned int col); +void LCD_SingleLineGoTo(unsigned int row_to); + +void LCD_OutString(const char* string); +short TERMIO_PutChar(unsigned char letter); + +unsigned char LCD_Timeout_Error(void); + + +#endif + diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..bd5e2fa --- /dev/null +++ b/src/main.c @@ -0,0 +1,62 @@ +// +// STC15 RPN calculator +// + +#include "stc15.h" +#include +#include "lcd.h" +#include "utils.h" + +#define FOSC 11059200 + +// clear wdt +#define WDT_CLEAR() (WDT_CONTR |= 1 << 4) +void timer0_isr() __interrupt 1 __using 1 +{ + P3_1 ^= 1; +} + + +// Call timer0_isr() 10000/sec: 0.0001 sec +// Initialize the timer count so that it overflows after 0.0001 sec +// THTL = 0x10000 - FOSC / 12 / 10000 = 0x10000 - 92.16 = 65444 = 0xFFA4 +void Timer0Init(void) //100us @ 11.0592MHz +{ + // TMOD = 0; // default: 16-bit auto-reload + // AUXR = 0; // default: traditional 8051 timer frequency of FOSC / 12 + // Initial values of TL0 and TH0 are stored in hidden reload registers: RL_TL0 and RL_TH0 + TL0 = 0xA4; // Initial timer value + TH0 = 0xFF; // Initial timer value + TF0 = 0; // Clear overflow flag + TR0 = 1; // Timer0 start run + ET0 = 1; // Enable timer0 interrupt + EA = 1; // Enable global interrupt +} + + +char buf[17]; + +/*********************************************/ +int main() +{ + uint32_t i; + Timer0Init(); // display refresh & switch read + LCD_Open(); + P3_4 = 0; //turn on led backlight + LCD_OutString("Hello world !!!!"); + LCD_GoTo(1,0); + LCD_OutString("......."); + + i = 0; + // LOOP + while (1) + { + LCD_GoTo(1,7); + LCD_OutString(u32str(i, buf, 10)); + i++; + + WDT_CLEAR(); + } +} +/* ------------------------------------------------------------------------- */ + diff --git a/src/stc15.h b/src/stc15.h new file mode 100644 index 0000000..5320630 --- /dev/null +++ b/src/stc15.h @@ -0,0 +1,179 @@ +#ifndef _STC15_H_ +#define _STC15_H_ + +#include <8051.h> + +#ifdef REG8051_H +#undef REG8051_H +#endif + +/* P4 */ +__sfr __at (0xC0) P4 ; +__sbit __at (0xC0) P4_0 ; +__sbit __at (0xC1) P4_1 ; +__sbit __at (0xC2) P4_2 ; +__sbit __at (0xC3) P4_3 ; +__sbit __at (0xC4) P4_4 ; +__sbit __at (0xC5) P4_5 ; +__sbit __at (0xC6) P4_6 ; +__sbit __at (0xC7) P4_7 ; + +__sfr __at 0x94 P0M0; +__sfr __at 0x93 P0M1; +__sfr __at 0x92 P1M0; +__sfr __at 0x91 P1M1; +__sfr __at 0x96 P2M0; +__sfr __at 0x95 P2M1; +__sfr __at 0xB2 P3M0; +__sfr __at 0xB1 P3M1; +__sfr __at 0xB4 P4M0; +__sfr __at 0xB3 P4M1; +__sfr __at 0xCA P5M0; +__sfr __at 0xC9 P5M1; +__sfr __at 0xCC P6M0; +__sfr __at 0xCB P6M1; +__sfr __at 0xE2 P7M0; +__sfr __at 0xE1 P7M1; + +__sfr __at 0x8E AUXR; +__sfr __at 0xA2 AUXR1; +__sfr __at 0xA2 P_SW1; +__sfr __at 0x97 CLK_DIV; +__sfr __at 0xA1 BUS_SPEED; +__sfr __at 0x9D P1ASF; +__sfr __at 0xBA P_SW2; + +/* IE */ +__sbit __at 0xAE ELVD; +__sbit __at 0xAD EADC; + +/* IP */ +__sbit __at 0xBF PPCA; +__sbit __at 0xBE PLVD; +__sbit __at 0xBD PADC; + +__sfr __at 0xAF IE2; +__sfr __at 0xB5 IP2; +__sfr __at 0x8F INT_CLKO; + +__sfr __at 0xD1 T4T3M; +__sfr __at 0xD1 T3T4M; +__sfr __at 0xD2 T4H; +__sfr __at 0xD3 T4L; +__sfr __at 0xD4 T3H; +__sfr __at 0xD5 T3L; +__sfr __at 0xD6 T2H; +__sfr __at 0xD7 T2L; +__sfr __at 0xAA WKTCL; +__sfr __at 0xAB WKTCH; +__sfr __at 0xC1 WDT_CONTR; + +__sfr __at 0x9A S2CON; +__sfr __at 0x9B S2BUF; +__sfr __at 0xAC S3CON; +__sfr __at 0xAD S3BUF; +__sfr __at 0x84 S4CON; +__sfr __at 0x85 S4BUF; +__sfr __at 0xA9 SADDR; +__sfr __at 0xB9 SADEN; + +//ADC +__sfr __at 0xBC ADC_CONTR; +__sfr __at 0xBD ADC_RES; +__sfr __at 0xBE ADC_RESL; + +//SPI +__sfr __at 0xCD SPSTAT; +__sfr __at 0xCE SPCTL; +__sfr __at 0xCF SPDAT; + +//IAP/ISP +__sfr __at 0xC2 IAP_DATA; +__sfr __at 0xC3 IAP_ADDRH; +__sfr __at 0xC4 IAP_ADDRL; +__sfr __at 0xC5 IAP_CMD; +__sfr __at 0xC6 IAP_TRIG; +__sfr __at 0xC7 IAP_CONTR; + +//PCA/PWM +__sfr __at 0xD8 CCON; +__sbit __at 0xDF CF; +__sbit __at 0xDE CR; +__sbit __at 0xDA CCF2; +__sbit __at 0xD9 CCF1; +__sbit __at 0xD8 CCF0; + +__sfr __at 0xD9 CMOD; +__sfr __at 0xE9 CL; +__sfr __at 0xF9 CH; +__sfr __at 0xDA CCAPM0; +__sfr __at 0xDB CCAPM1; +__sfr __at 0xDC CCAPM2; +__sfr __at 0xEA CCAP0L; +__sfr __at 0xEB CCAP1L; +__sfr __at 0xEC CCAP2L; +__sfr __at 0xF2 PCA_PWM0; +__sfr __at 0xF3 PCA_PWM1; +__sfr __at 0xF4 PCA_PWM2; +__sfr __at 0xFA CCAP0H; +__sfr __at 0xFB CCAP1H; +__sfr __at 0xFC CCAP2H; + +__sfr __at 0xE6 CMPCR1; +__sfr __at 0xE7 CMPCR2; + +//PWM +__sfr __at 0xf1 PWMCFG; +__sfr __at 0xf5 PWMCR; +__sfr __at 0xf6 PWMIF; +__sfr __at 0xf7 PWMFDCR; + +#define PWMC (*(unsigned int volatile xdata *)0xfff0) +#define PWMCH (*(unsigned char volatile xdata *)0xfff0) +#define PWMCL (*(unsigned char volatile xdata *)0xfff1) +#define PWMCKS (*(unsigned char volatile xdata *)0xfff2) +#define PWM2T1 (*(unsigned int volatile xdata *)0xff00) +#define PWM2T1H (*(unsigned char volatile xdata *)0xff00) +#define PWM2T1L (*(unsigned char volatile xdata *)0xff01) +#define PWM2T2 (*(unsigned int volatile xdata *)0xff02) +#define PWM2T2H (*(unsigned char volatile xdata *)0xff02) +#define PWM2T2L (*(unsigned char volatile xdata *)0xff03) +#define PWM2CR (*(unsigned char volatile xdata *)0xff04) +#define PWM3T1 (*(unsigned int volatile xdata *)0xff10) +#define PWM3T1H (*(unsigned char volatile xdata *)0xff10) +#define PWM3T1L (*(unsigned char volatile xdata *)0xff11) +#define PWM3T2 (*(unsigned int volatile xdata *)0xff12) +#define PWM3T2H (*(unsigned char volatile xdata *)0xff12) +#define PWM3T2L (*(unsigned char volatile xdata *)0xff13) +#define PWM3CR (*(unsigned char volatile xdata *)0xff14) +#define PWM4T1 (*(unsigned int volatile xdata *)0xff20) +#define PWM4T1H (*(unsigned char volatile xdata *)0xff20) +#define PWM4T1L (*(unsigned char volatile xdata *)0xff21) +#define PWM4T2 (*(unsigned int volatile xdata *)0xff22) +#define PWM4T2H (*(unsigned char volatile xdata *)0xff22) +#define PWM4T2L (*(unsigned char volatile xdata *)0xff23) +#define PWM4CR (*(unsigned char volatile xdata *)0xff24) +#define PWM5T1 (*(unsigned int volatile xdata *)0xff30) +#define PWM5T1H (*(unsigned char volatile xdata *)0xff30) +#define PWM5T1L (*(unsigned char volatile xdata *)0xff31) +#define PWM5T2 (*(unsigned int volatile xdata *)0xff32) +#define PWM5T2H (*(unsigned char volatile xdata *)0xff32) +#define PWM5T2L (*(unsigned char volatile xdata *)0xff33) +#define PWM5CR (*(unsigned char volatile xdata *)0xff34) +#define PWM6T1 (*(unsigned int volatile xdata *)0xff40) +#define PWM6T1H (*(unsigned char volatile xdata *)0xff40) +#define PWM6T1L (*(unsigned char volatile xdata *)0xff41) +#define PWM6T2 (*(unsigned int volatile xdata *)0xff42) +#define PWM6T2H (*(unsigned char volatile xdata *)0xff42) +#define PWM6T2L (*(unsigned char volatile xdata *)0xff43) +#define PWM6CR (*(unsigned char volatile xdata *)0xff44) +#define PWM7T1 (*(unsigned int volatile xdata *)0xff50) +#define PWM7T1H (*(unsigned char volatile xdata *)0xff50) +#define PWM7T1L (*(unsigned char volatile xdata *)0xff51) +#define PWM7T2 (*(unsigned int volatile xdata *)0xff52) +#define PWM7T2H (*(unsigned char volatile xdata *)0xff52) +#define PWM7T2L (*(unsigned char volatile xdata *)0xff53) +#define PWM7CR (*(unsigned char volatile xdata *)0xff54) + +#endif + diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 0000000..9f3ae93 --- /dev/null +++ b/src/utils.c @@ -0,0 +1,47 @@ +#include + +void _delay_ms(uint8_t ms) +{ + // delay function, tuned for 11.092 MHz clock + // optimized to assembler + ms; // keep compiler from complaining? + __asm; + ; dpl contains ms param value + delay$: + mov b, #8 ; i + outer$: + mov a, #243 ; j + inner$: + djnz acc, inner$ + djnz b, outer$ + djnz dpl, delay$ + __endasm; +} + +char* u32str(uint32_t x, char* buf, uint8_t base) +{ + int i = 0, j; + //corner case + if (x == 0){ + buf[i] = '0'; + } + //get reversed string + while(x > 0){ + buf[i] = (x % base) + '0'; + x /= base; + i++; + } + //add terminator + buf[i] = '\0'; + i--; //back to last digit + //reverse string + for (j = 0; j < i; j++, i--){ + char tmp; + tmp = buf[j]; + buf[j] = buf[i]; + buf[i] = tmp; + } + + return buf; +} + diff --git a/src/utils.h b/src/utils.h new file mode 100644 index 0000000..9e9edea --- /dev/null +++ b/src/utils.h @@ -0,0 +1,21 @@ +/* + * utils.h + * + * Created on: Mar 10, 2019 + */ + +#ifndef SRC_UTILS_H_ +#define SRC_UTILS_H_ + +#include + +void _delay_ms(uint8_t ms); + +//TODO +#define _delay_us(x) _delay_ms(1) + +char* u32str(uint32_t x, char* buf, uint8_t base); + + +#endif /* SRC_UTILS_H_ */ +