95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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* Copyright © 2009 Keith Packard <keithp@keithp.com>
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*
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* 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 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#ifndef _CC_BITBANG_H_
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#define _CC_BITBANG_H_
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#include <stdint.h>
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#define CC_CLOCK 0x1
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#define CC_DATA 0x2
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#define CC_RESET_N 0x4
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#define CC_CLOCK_US (2)
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/* Telemetrum has a 10k pull-up to 3.3v, a 0.001uF cap to ground
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* and a 2.7k resistor to the reset line. This takes about 6us
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* to settle, so we'll wait longer than that after changing the reset line
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*/
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#define CC_RESET_US (12)
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struct cc_bitbang;
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void
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cc_bitbang_set_clock(uint32_t us);
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void
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cc_bitbang_half_clock(struct cc_bitbang *bb);
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void
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cc_bitbang_wait_reset(struct cc_bitbang *bb);
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struct cc_bitbang *
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cc_bitbang_open(void);
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void
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cc_bitbang_close(struct cc_bitbang *bb);
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void
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cc_bitbang_debug_mode(struct cc_bitbang *bb);
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void
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cc_bitbang_reset(struct cc_bitbang *bb);
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int
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cc_bitbang_write(struct cc_bitbang *bb, uint8_t mask, uint8_t value);
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void
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cc_bitbang_read(struct cc_bitbang *bb, uint8_t *valuep);
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void
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cc_bitbang_sync(struct cc_bitbang *bb);
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void
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cc_bitbang_print(char *format, uint8_t mask, uint8_t set);
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void
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cc_bitbang_print(char *format, uint8_t mask, uint8_t set);
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void
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cc_bitbang_send(struct cc_bitbang *bb, uint8_t mask, uint8_t set);
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void
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cc_bitbang_send_bit(struct cc_bitbang *bb, uint8_t bit);
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void
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cc_bitbang_send_byte(struct cc_bitbang *bb, uint8_t byte);
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void
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cc_bitbang_send_bytes(struct cc_bitbang *bb, uint8_t *bytes, int nbytes);
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void
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cc_bitbang_recv_bit(struct cc_bitbang *bb, int first, uint8_t *bit);
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void
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cc_bitbang_recv_byte(struct cc_bitbang *bb, int first, uint8_t *bytep);
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void
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cc_bitbang_recv_bytes(struct cc_bitbang *bb, uint8_t *bytes, int nbytes);
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#endif /* _CC_BITBANG_H_ */
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