src/hardware/scpi-pps/protocol.h

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef LIBSIGROK_HARDWARE_SCPI_PPS_PROTOCOL_H
  21 #define LIBSIGROK_HARDWARE_SCPI_PPS_PROTOCOL_H
  22
  23 #include <stdint.h>
  24 #include <glib.h>
  25 #include "libsigrok.h"
  26 #include "libsigrok-internal.h"
  27
  28 #define LOG_PREFIX "scpi-pps"
  29
  30 enum pps_scpi_cmds {
  31         SCPI_CMD_REMOTE,
  32         SCPI_CMD_LOCAL,
  33         SCPI_CMD_BEEPER,
  34         SCPI_CMD_BEEPER_ENABLE,
  35         SCPI_CMD_BEEPER_DISABLE,
  36         SCPI_CMD_SELECT_CHANNEL,
  37         SCPI_CMD_GET_MEAS_VOLTAGE,
  38         SCPI_CMD_GET_MEAS_CURRENT,
  39         SCPI_CMD_GET_MEAS_POWER,
  40         SCPI_CMD_GET_VOLTAGE_TARGET,
  41         SCPI_CMD_SET_VOLTAGE_TARGET,
  42         SCPI_CMD_GET_CURRENT_LIMIT,
  43         SCPI_CMD_SET_CURRENT_LIMIT,
  44         SCPI_CMD_GET_OUTPUT_ENABLED,
  45         SCPI_CMD_SET_OUTPUT_ENABLE,
  46         SCPI_CMD_SET_OUTPUT_DISABLE,
  47         SCPI_CMD_GET_OUTPUT_REGULATION,
  48         SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION,
  49         SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_ENABLE,
  50         SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_DISABLE,
  51         SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED,
  52         SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLE,
  53         SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_DISABLE,
  54         SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE,
  55         SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD,
  56         SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD,
  57         SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED,
  58         SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLE,
  59         SCPI_CMD_SET_OVER_CURRENT_PROTECTION_DISABLE,
  60         SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE,
  61         SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD,
  62         SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD,
  63 };
  64
  65 /*
  66  * These are bit values denoting features a device can have either globally,
  67  * in scpi_pps.features, or on a per-channel-group basis in
  68  * channel_group_spec.features.
  69  */
  70 enum pps_features {
  71         PPS_OTP           = (1 << 0),
  72         PPS_OVP           = (1 << 1),
  73         PPS_OCP           = (1 << 2),
  74         PPS_INDEPENDENT   = (1 << 3),
  75         PPS_SERIES        = (1 << 4),
  76         PPS_PARALLEL      = (1 << 5),
  77 };
  78
  79 struct scpi_pps {
  80         char *vendor;
  81         char *model;
  82         uint64_t features;
  83         const uint32_t *devopts;
  84         unsigned int num_devopts;
  85         const uint32_t *devopts_cg;
  86         unsigned int num_devopts_cg;
  87         struct channel_spec *channels;
  88         unsigned int num_channels;
  89         struct channel_group_spec *channel_groups;
  90         unsigned int num_channel_groups;
  91         struct scpi_command *commands;
  92         unsigned int num_commands;
  93         int (*probe_channels) (struct sr_dev_inst *sdi, struct sr_scpi_hw_info *hwinfo,
  94                 struct channel_spec **channels, unsigned int *num_channels,
  95                 struct channel_group_spec **channel_groups, unsigned int *num_channel_groups);
  96 };
  97
  98 struct channel_spec {
  99         char *name;
 100         /* Min, max, programming resolution. */
 101         float voltage[3];
 102         float current[3];
 103 };
 104
 105 struct scpi_command {
 106         int command;
 107         char *string;
 108 };
 109
 110 struct channel_group_spec {
 111         char *name;
 112         uint64_t channel_index_mask;
 113         uint64_t features;
 114 };
 115
 116 struct pps_channel {
 117         int mq;
 118         unsigned int hw_output_idx;
 119         char *hwname;
 120 };
 121
 122 struct pps_channel_instance {
 123         int mq;
 124         int command;
 125         char *prefix;
 126 };
 127
 128 struct pps_channel_group {
 129         uint64_t features;
 130 };
 131
 132 enum acq_states {
 133         STATE_VOLTAGE,
 134         STATE_CURRENT,
 135         STATE_STOP,
 136 };
 137
 138 /** Private, per-device-instance driver context. */
 139 struct dev_context {
 140         /* Model-specific information */
 141         const struct scpi_pps *device;
 142
 143         /* Acquisition settings */
 144         void *cb_data;
 145
 146         /* Operational state */
 147         gboolean beeper_was_set;
 148         struct channel_spec *channels;
 149         struct channel_group_spec *channel_groups;
 150
 151         /* Temporary state across callbacks */
 152         struct sr_channel *cur_channel;
 153 };
 154
 155 const char *get_vendor(const char *raw_vendor);
 156 SR_PRIV char *scpi_cmd_get(const struct sr_dev_inst *sdi, int command);
 157 SR_PRIV int scpi_cmd(const struct sr_dev_inst *sdi, int command, ...);
 158 SR_PRIV int scpi_cmd_resp(const struct sr_dev_inst *sdi, GVariant **gvar,
 159                 const GVariantType *gvtype, int command, ...);
 160 SR_PRIV int select_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch);
 161 SR_PRIV struct sr_channel *next_enabled_channel(const struct sr_dev_inst *sdi,
 162                 struct sr_channel *cur_channel);
 163 SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data);
 164
 165 #endif