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   1 /*
   2  * Copyright © 2019 Bdale Garbee <bdale@gag.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 #ifndef _AO_ADS131A0X_H_
  16 #define _AO_ADS131A0X_H_
  17
  18 /* control commands */
  19 #define AO_ADS131A0X_NOP                0x00
  20 #define AO_ADS131A0X_WAKEUP             0x02
  21 #define AO_ADS131A0X_POWERDOWN          0x04
  22 #define AO_ADS131A0X_RESET              0x06
  23 #define AO_ADS131A0X_START              0x08
  24 #define AO_ADS131A0X_STOP               0x0a
  25
  26 /* calibration commands */
  27 #define AO_ADS131A0X_SYOCAL             0x16
  28 #define AO_ADS131A0X_SYGCAL             0x17
  29 #define AO_ADS131A0X_SFOCAL             0x19
  30
  31 /* data read command */
  32 #define AO_ADS131A0X_RDATA              0x12
  33
  34 /* register read and write commands */
  35 #define AO_ADS131A0X_RREG               0x20
  36 #define AO_ADS131A0X_WREG               0x40
  37
  38 /* configuration register map */
  39 #define AO_ADS131A0X_ID                 0x00
  40 #define AO_ADS131A0X_ID_ADS131A08               0x00
  41 #define AO_ADS131A0X_ID_ADS131A06               0x01
  42 #define AO_ADS131A0X_STATUS             0x01
  43 #define AO_ADS131A0X_INPMUX             0x02
  44 #define AO_ADS131A0X_PGA                0x03
  45 #define AO_ADS131A0X_DATARATE           0x04
  46 #define AO_ADS131A0X_REF                0x05
  47 #define AO_ADS131A0X_IDACMAG            0x06
  48 #define AO_ADS131A0X_IDACMUX            0x07
  49 #define AO_ADS131A0X_VBIAS              0x08
  50 #define AO_ADS131A0X_SYS                0x09
  51 #define AO_ADS131A0X_OFCAL0             0x0a
  52 #define AO_ADS131A0X_OFCAL1             0x0b
  53 #define AO_ADS131A0X_OFCAL2             0x0c
  54 #define AO_ADS131A0X_FSCAL0             0x0d
  55 #define AO_ADS131A0X_FSCAL1             0x0e
  56 #define AO_ADS131A0X_FSCAL2             0x0f
  57 #define AO_ADS131A0X_GPIODAT            0x10
  58 #define AO_ADS131A0X_GPIOCON            0x11
  59
  60 struct ao_ads131a0x_sample {
  61         int32_t ain[AO_ADS131A0X_CHANNELS];
  62 };
  63
  64 extern struct ao_ads131a0x_sample       ao_ads131a0x_current;
  65
  66 void
  67 ao_ads131a0x_init(void);
  68
  69 #endif /* _AO_ADS131A0X_H_ */