43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
/* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/* Copyright (c) 2016 King Kévin <kingkevin@cuvoodoo.info> */
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/* this library is used to drive the vacuum fluorescent display extracted from a Samsung SER-6500 cashier machine
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* it used three chained supertex HV518P shift register VFD drivers */
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/* supertex HV518 VFD driver pins */
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#define VFD_RCC RCC_GPIOA
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#define VFD_PORT GPIOA
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#define VFD_STR GPIO4
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#define VFD_NLE GPIO5
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#define VFD_CLK GPIO6
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#define VFD_DIN GPIO7
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/* set digit <nb> to ASCII character <c>
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* use the MSB of <c> to enable the dot */
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void vfd_digit(uint8_t nb, char c);
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/* set dot matrix <nb> to ASCII character <c>
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* non ASCII characters are used for pictures */
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void vfd_matrix(uint8_t nb, char c);
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/* shift out the VFD data */
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void vfd_shift(void);
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/* clear VFD display
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* the data has to be transmitted separately */
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void vfd_clear(void);
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/* test VFD display (light up all anodes)
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* the data has to be transmitted separately */
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void vfd_test(void);
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/* setup VFD */
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void vfd_setup(void);
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