116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.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 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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#ifndef LIBSIGROK_HARDWARE_TEKPOWER_DMM_PROTOCOL_H
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#define LIBSIGROK_HARDWARE_TEKPOWER_DMM_PROTOCOL_H
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/* Message logging helpers with driver-specific prefix string. */
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#define DRIVER_LOG_DOMAIN "tekpower-dmm: "
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#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
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#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
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#define DMM_BUFSIZE 256
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/* Flags present in the packet */
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#define LCD14_AC (1 << 23)
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#define LCD14_DC (1 << 22)
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#define LCD14_AUTO (1 << 21)
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#define LCD14_RS232 (1 << 20)
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#define LCD14_MICRO (1 << 19)
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#define LCD14_NANO (1 << 18)
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#define LCD14_KILO (1 << 17)
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#define LCD14_DIODE (1 << 16)
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#define LCD14_MILLI (1 << 15)
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#define LCD14_DUTY (1 << 14)
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#define LCD14_MEGA (1 << 13)
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#define LCD14_BEEP (1 << 12)
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#define LCD14_FARAD (1 << 11)
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#define LCD14_OHM (1 << 10)
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#define LCD14_REL (1 << 9)
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#define LCD14_HOLD (1 << 8)
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#define LCD14_AMP (1 << 7)
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#define LCD14_VOLT (1 << 6)
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#define LCD14_HZ (1 << 5)
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#define LCD14_LOW_BATT (1 << 4)
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#define LCD14_HFE (1 << 3)
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#define LCD14_CELSIUS (1 << 2)
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#define LCD14_RSVD1 (1 << 1)
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#define LCD14_RSVD0 (0 << 0)
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/* Mask used to remove the decimal point from a digit. */
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#define LCD14_DP_MASK 0x80
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#define LCD14_D0_NEG LCD14_DP_MASK
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/* Mask used to remove the syncronization nibble. */
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#define LCD14_SYNC_MASK 0xf0
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/* What the LCD values represent */
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#define LCD14_LCD_0 0x7d
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#define LCD14_LCD_1 0x05
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#define LCD14_LCD_2 0x5b
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#define LCD14_LCD_3 0x1f
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#define LCD14_LCD_4 0x27
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#define LCD14_LCD_5 0x3e
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#define LCD14_LCD_6 0x7e
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#define LCD14_LCD_7 0x15
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#define LCD14_LCD_8 0x7f
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#define LCD14_LCD_9 0x3f
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#define LCD14_LCD_INVALID 0xff
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#define LCD14_PACKET_SIZE 14
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struct lcd14_packet {
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uint8_t raw[LCD14_PACKET_SIZE];
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};
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struct lcd14_data {
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uint8_t digit[4];
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uint32_t flags;
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};
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SR_PRIV gboolean lcd14_is_packet_valid(const struct lcd14_packet *packet,
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struct lcd14_data *data);
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/** Private, per-device-instance driver context. */
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struct dev_context {
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/** The current sampling limit (in number of samples). */
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uint64_t limit_samples;
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/** Opaque pointer passed in by the frontend. */
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void *cb_data;
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/** The current number of already received samples. */
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uint64_t num_samples;
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struct sr_serial_dev_inst *serial;
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char *serialcomm;
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uint8_t buf[DMM_BUFSIZE];
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int bufoffset;
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int buflen;
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};
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SR_PRIV int tekpower_dmm_receive_data(int fd, int revents, void *cb_data);
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#endif
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