V.Zavjalov (vl.zavjalov at gmail dot com), 2021-2024

This is a simple C++ program which implements SPP interface to ADS1113/1114/1115 i2c ADC converters, for using with device2 server (https://github.com/slazav/device2).

• -d <dev> -- I2C device path (default /dev/i2c-0)
• -a <addr> -- I2C address (default 0x48)
• -c <chan> -- change default channel setting (default AB)
• -v <chan> -- change default range setting (default 2.048)
• -r <chan> -- change default rate setting (default 8)
• -m <mode> -- program mode: spp, single, cont (default: spp)
• -d <time> -- delay in cont mode [s] (default: 1.0)
• -h -- write this help message and exit

Channel settings: A, B, C, D, AB, AD, BD, CD.

Range settings: 6.144, 4.096, 2.048, 1.024, 0.512, 0.256 [V]. Bi-directional in differential mode (AB, CD, etc).

Rate settings: 8, 16, 32, 64, 128, 250, 475, 860 [1/s].

Implements SPP interface for using it with device server.

Example: print device configuration; do a measurement of channel A at range 1.024V and rate 1/16s; do a measurement with default settings (channel AB, range 2.048, rate 1/8s). Default settings can be changed with -c, -r, -v option.

$ ./ads1115 -d /dev/i2c-3
#SPP001
Using /dev/i2c-3:0x48 as a ADS1113/1114/1115 device.
Type help to see command list.
#OK
*idn?
ads1115 1.0
#OK
get_conf
conversion register: 0x2070
lo_thresh register: 0x8000
hi_thresh register: 0x7fff
config register:    0xc7a3
status:     ready
chan:       A
range:      1.024 V
mode:       single
rate:       1/250 s
comp.type:  window
comp.pol:   act.high
comp.latch: on
comp.queue: off
#OK
get A 1.024 16
0.257937
#OK
get
0.000000
#OK

Do a single measurement with defult settings, print result and exit.

Example:

$ ./ads1115 -d /dev/i2c-3 -m single
0.000000
$ ./ads1115 -d /dev/i2c-3 -m single -c D
0.268188

Print device information (all registers) and exit.

Example:

$ ./ads1115 -d /dev/i2c-3 -m info
conversion register: 0x10c0
lo_thresh register: 0x8000
hi_thresh register: 0x7fff
config register:    0xe503
status:     ready
chan:       C
range:      2.048 V
mode:       single
rate:       1/8 s
comp.type:  window
comp.pol:   act.high
comp.latch: on
comp.queue: off

Do measurements in a loop, print results with timestamps. Delay between measurements (in seconds) can be set with -t option.

Example (measure channal A with conversion time 1/8s, without any delay between measurements):

# ./ads1115 -d /dev/i2c-3 -t0 -r8 -m cont -c A
1612617919.027378       0.268062
1612617919.156301       0.268125
1612617919.285006       0.268250
1612617919.413711       0.268062
1612617919.542406       0.268188
1612617919.671107       0.268250
1612617919.799795       0.268125
1612617919.928509       0.268250
1612617920.057207       0.268125
1612617920.185898       0.268250