125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/*
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* Copyright 2020 Google LLC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/shell/shell.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <zephyr/device.h>
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#include <zephyr/drivers/sensor.h>
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/**
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* @brief Collect the values for several channels
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*
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* @param dev Sensor device to read from
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* @param ... any number of pairs of arguments:
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* first is the sensor channel to read (-1 to terminate the list)
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* second is a pointer to the struct sensor_value to put it in
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* @return 0 on success
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* @return negative error code from sensor API on failure
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*/
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static int get_channels(const struct device *dev, ...)
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{
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va_list ptr;
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int i;
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va_start(ptr, dev);
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for (i = 0;; i++) {
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int chan;
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struct sensor_value *val;
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int err;
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chan = va_arg(ptr, int);
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if (chan == -1) {
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break;
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}
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val = va_arg(ptr, struct sensor_value *);
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err = sensor_channel_get(dev, chan, val);
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if (err < 0) {
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va_end(ptr);
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return err;
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}
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}
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va_end(ptr);
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return 0;
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}
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/* battery */
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static int cmd_battery(const struct shell *shell, size_t argc, char **argv)
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{
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struct sensor_value temp, volt, current, i_desired, charge_remain;
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struct sensor_value charge, v_desired, v_design, cap, nom_cap;
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struct sensor_value full, empty;
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const struct device *dev = DEVICE_DT_GET(DT_ALIAS(battery));
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bool allowed;
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int err;
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if (!device_is_ready(dev)) {
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shell_error(shell, "Device not ready (%s)", argv[1]);
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return -ENODEV;
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}
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err = sensor_sample_fetch(dev);
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if (err < 0) {
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shell_error(shell, "Failed to read sensor: %d", err);
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}
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err = get_channels(dev,
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SENSOR_CHAN_GAUGE_TEMP, &temp,
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SENSOR_CHAN_GAUGE_VOLTAGE, &volt,
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SENSOR_CHAN_GAUGE_AVG_CURRENT, ¤t,
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SENSOR_CHAN_GAUGE_DESIRED_VOLTAGE, &v_desired,
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SENSOR_CHAN_GAUGE_DESIRED_CHARGING_CURRENT,
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&i_desired,
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SENSOR_CHAN_GAUGE_STATE_OF_CHARGE, &charge,
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SENSOR_CHAN_GAUGE_DESIGN_VOLTAGE, &v_design,
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SENSOR_CHAN_GAUGE_REMAINING_CHARGE_CAPACITY,
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&charge_remain,
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SENSOR_CHAN_GAUGE_FULL_CHARGE_CAPACITY, &cap,
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SENSOR_CHAN_GAUGE_NOM_AVAIL_CAPACITY, &nom_cap,
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SENSOR_CHAN_GAUGE_TIME_TO_FULL, &full,
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SENSOR_CHAN_GAUGE_TIME_TO_EMPTY, &empty,
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-1);
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if (err < 0) {
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return err;
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}
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shell_fprintf(shell, SHELL_NORMAL, "Temp: %.1d.%02d C\n", temp.val1,
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temp.val2 / 10000);
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shell_fprintf(shell, SHELL_NORMAL, "V: %5d.%02d V\n", volt.val1,
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volt.val2 / 10000);
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shell_fprintf(shell, SHELL_NORMAL, "V-desired: %d.%02d V\n",
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v_desired.val1, v_desired.val2 / 10000);
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shell_fprintf(shell, SHELL_NORMAL, "I: %d mA", current.val1);
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if (current.val1 > 0) {
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shell_fprintf(shell, SHELL_NORMAL, " (CHG)");
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} else if (current.val1 < 0) {
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shell_fprintf(shell, SHELL_NORMAL, " (DISCHG)");
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}
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shell_fprintf(shell, SHELL_NORMAL, "\n");
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shell_fprintf(shell, SHELL_NORMAL, "I-desired: %5d mA\n",
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i_desired.val1);
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allowed = i_desired.val1 && v_desired.val2 && charge.val1 < 100;
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shell_fprintf(shell, SHELL_NORMAL, "Charging: %sAllowed\n",
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allowed ? "" : "Not ");
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shell_fprintf(shell, SHELL_NORMAL, "Charge: %d %%\n", charge.val1);
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shell_fprintf(shell, SHELL_NORMAL, "V-design: %d.%02d V\n",
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v_design.val1, v_design.val2 / 10000);
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shell_fprintf(shell, SHELL_NORMAL, "Remaining: %d mA\n",
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charge_remain.val1);
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shell_fprintf(shell, SHELL_NORMAL, "Cap-full: %d mA\n", cap.val1);
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shell_fprintf(shell, SHELL_NORMAL, "Design: %d mA\n", nom_cap.val1);
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shell_fprintf(shell, SHELL_NORMAL, "Time full: %dh:%02d\n",
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full.val1 / 60, full.val1 % 60);
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shell_fprintf(shell, SHELL_NORMAL, "Time empty: %dh:%02d\n",
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empty.val1 / 60, empty.val1 % 60);
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return 0;
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}
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SHELL_CMD_REGISTER(battery, NULL, "Battery status", cmd_battery);
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