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/*
* Copyright (C) 2015 Freie Universitรคt Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*
*/
/**
* @ingroup sys_shell_commands
* @{
*
* @file
* @brief SAUL registry shell commands
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "saul_reg.h"
/* this function does not check, if the given device is valid */
static void probe(int num, saul_reg_t *dev)
{
int dim;
phydat_t res;
dim = saul_reg_read(dev, &res);
if (dim <= 0) {
printf("error: failed to read from device #%i\n", num);
return;
}
/* print results */
printf("Reading from #%i (%s|%s)\n", num, dev->name,
saul_class_to_str(dev->driver->type));
phydat_dump(&res, dim);
}
static void probe_all(void)
{
saul_reg_t *dev = saul_reg;
int i = 0;
while (dev) {
probe(i++, dev);
puts("");
dev = dev->next;
}
}
static void list(void)
{
saul_reg_t *dev = saul_reg;
int i = 0;
if (dev) {
puts("ID\tClass\t\tName");
}
else {
puts("No devices found");
}
while (dev) {
printf("#%i\t%s\t%s\n",
i++, saul_class_to_str(dev->driver->type), dev->name);
dev = dev->next;
}
}
static void read(int argc, char **argv)
{
int num;
saul_reg_t *dev;
if (argc < 3) {
printf("usage: %s %s <device id>|all\n", argv[0], argv[1]);
return;
}
if (strcmp(argv[2], "all") == 0) {
probe_all();
return;
}
/* get device id */
num = atoi(argv[2]);
dev = saul_reg_find_nth(num);
if (dev == NULL) {
puts("error: undefined device id given");
return;
}
probe(num, dev);
}
static void write(int argc, char **argv)
{
int num, dim;
saul_reg_t *dev;
phydat_t data;
if (argc < 4) {
printf("usage: %s %s <device id> <value 0> [<value 1> [<value 2]]\n",
argv[0], argv[1]);
return;
}
num = atoi(argv[2]);
dev = saul_reg_find_nth(num);
if (dev == NULL) {
puts("error: undefined device given");
return;
}
/* parse value(s) */
memset(&data, 0, sizeof(data));
dim = ((argc - 3) > (int)PHYDAT_DIM) ? (int)PHYDAT_DIM : (argc - 3);
for (int i = 0; i < dim; i++) {
data.val[i] = (int16_t)atoi(argv[i + 3]);
}
/* print values before writing */
printf("Writing to device #%i - %s\n", num, dev->name);
phydat_dump(&data, dim);
/* write values to device */
dim = saul_reg_write(dev, &data);
if (dim <= 0) {
if (dim == -ENOTSUP) {
printf("error: device #%i is not writable\n", num);
}
else {
printf("error: failure to write to device #%i\n", num);
}
return;
}
printf("data successfully written to device #%i\n", num);
}
int _saul(int argc, char **argv)
{
if (argc < 2) {
list();
}
else {
if (strcmp(argv[1], "read") == 0) {
read(argc, argv);
}
else if (strcmp(argv[1], "write") == 0) {
write(argc, argv);
}
else {
printf("usage: %s read|write\n", argv[0]);
}
}
return 0;
}
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