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dmm/eev121gw: introduce parser for EEVblog 121GW 19-byte binary packets 

Introduce the dmm/eev121gw.c source file with parse routines for the
EEVblog 121GW meter's 19-bytes binary packets. Get the values and MQ
properties of the device's several displays (main, sub, bar) in several
individual parse calls.

This commit introduces initial support for the device. Some of the modes
and features are untested, as are some of the device's ranges.
This commit is contained in:
Gerhard Sittig 2018-09-28 18:39:23 +02:00 committed by Uwe Hermann
parent 388aa0fb6b
commit 1c3098aae0
3 changed files with 1416 additions and 0 deletions
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1
Makefile.am
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@ -149,6 +149,7 @@ libsigrok_la_SOURCES += \
src/dmm/asycii.c \
src/dmm/bm25x.c \
src/dmm/dtm0660.c \
src/dmm/eev121gw.c \
src/dmm/es519xx.c \
src/dmm/fs9721.c \
src/dmm/fs9922.c \

1373
src/dmm/eev121gw.c Normal file
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42
src/libsigrok-internal.h
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@ -1451,6 +1451,48 @@ SR_PRIV gboolean sr_asycii_packet_valid(const uint8_t *buf);
SR_PRIV int sr_asycii_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
/*--- src/dmm/eev121gw.c ----------------------------------------------------*/
#define EEV121GW_PACKET_SIZE 19
enum eev121gw_display {
EEV121GW_DISPLAY_MAIN,
EEV121GW_DISPLAY_SUB,
EEV121GW_DISPLAY_BAR,
EEV121GW_DISPLAY_COUNT,
};
struct eev121gw_info {
/* Selected channel. */
size_t ch_idx;
/*
* Measured value, number and sign/overflow flags, scale factor
* and significant digits.
*/
uint32_t uint_value;
gboolean is_ofl, is_neg;
int factor, digits;
/* Currently active mode (meter's function). */
gboolean is_ac, is_dc, is_voltage, is_current, is_power, is_gain;
gboolean is_resistance, is_capacitance, is_diode, is_temperature;
gboolean is_continuity, is_frequency, is_period, is_duty_cycle;
/* Quantities associated with mode/function. */
gboolean is_ampere, is_volt, is_volt_ampere, is_dbm;
gboolean is_ohm, is_farad, is_celsius, is_fahrenheit;
gboolean is_hertz, is_seconds, is_percent, is_loop_current;
gboolean is_unitless, is_logic;
/* Other indicators. */
gboolean is_min, is_max, is_avg, is_1ms_peak, is_rel, is_hold;
gboolean is_low_pass, is_mem, is_bt, is_auto_range, is_test;
gboolean is_auto_poweroff, is_low_batt;
};
SR_PRIV gboolean sr_eev121gw_packet_valid(const uint8_t *buf);
SR_PRIV int sr_eev121gw_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
SR_PRIV int sr_eev121gw_3displays_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
/*--- hardware/scale/kern.c -------------------------------------------------*/
struct kern_info {