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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* ADC module for Chrome EC */
#include "adc.h"
#include "adc_chip.h"
#include "common.h"
#include "console.h"
#include "util.h"
/* 'adc' console command is not supported in continuous mode */
#ifndef CONFIG_ADC_PROFILE_FAST_CONTINUOUS
static enum adc_channel find_adc_channel_by_name(const char *name)
{
const struct adc_t *ch = adc_channels;
int i;
if (!name || !*name)
return ADC_CH_COUNT;
for (i = 0; i < ADC_CH_COUNT; i++, ch++) {
if (!strcasecmp(name, ch->name))
return i;
}
return ADC_CH_COUNT;
}
static int print_one_adc(int channel)
{
int v;
v = adc_read_channel(channel);
if (v == ADC_READ_ERROR)
return EC_ERROR_UNKNOWN;
ccprintf(" %s = %d\n", adc_channels[channel].name, v);
return EC_SUCCESS;
}
static int command_adc(int argc, char **argv)
{
int i, ret;
/* If a channel is specified, read only that one */
if (argc == 2) {
i = find_adc_channel_by_name(argv[1]);
if (i == ADC_CH_COUNT)
return EC_ERROR_PARAM1;
return print_one_adc(i);
} else {
/* Otherwise print them all */
for (i = 0; i < ADC_CH_COUNT; ++i) {
ret = print_one_adc(i);
if (ret)
return ret;
}
return EC_SUCCESS;
}
}
DECLARE_CONSOLE_COMMAND(adc, command_adc,
"[name]",
"Print ADC channel(s)");
#endif
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