blob: b444288953b0df56eba9d92ef6168b436109a25d [file] [log] [blame]
/*
* Copyright (c) 2018 Intel Corporation
* Copyright (c) 2021 Dennis Ruffer <daruffer@gmail.com>
*
* SPDX-License-Identifier: Apache-2.0
*
* Use "device list" command for GPIO port names
*/
#include <zephyr/sys/printk.h>
#include <zephyr/shell/shell.h>
#include <zephyr/init.h>
#include <string.h>
#include <stdio.h>
#include <zephyr/drivers/gpio.h>
#include <stdlib.h>
#include <ctype.h>
#include <zephyr/logging/log.h>
#define LOG_LEVEL CONFIG_LOG_DEFAULT_LEVEL
LOG_MODULE_REGISTER(gpio_shell);
struct args_index {
uint8_t port;
uint8_t index;
uint8_t mode;
uint8_t value;
};
static const struct args_index args_indx = {
.port = 1,
.index = 2,
.mode = 3,
.value = 3,
};
static int cmd_gpio_conf(const struct shell *sh, size_t argc, char **argv)
{
uint8_t index = 0U;
int type = GPIO_OUTPUT;
const struct device *dev;
if (isdigit((unsigned char)argv[args_indx.index][0]) != 0 &&
isalpha((unsigned char)argv[args_indx.mode][0]) != 0) {
index = (uint8_t)atoi(argv[args_indx.index]);
if (!strcmp(argv[args_indx.mode], "in")) {
type = GPIO_INPUT;
} else if (!strcmp(argv[args_indx.mode], "inu")) {
type = GPIO_INPUT | GPIO_PULL_UP;
} else if (!strcmp(argv[args_indx.mode], "ind")) {
type = GPIO_INPUT | GPIO_PULL_DOWN;
} else if (!strcmp(argv[args_indx.mode], "out")) {
type = GPIO_OUTPUT;
} else {
return 0;
}
} else {
shell_error(sh, "Wrong parameters for conf");
return -ENOTSUP;
}
dev = device_get_binding(argv[args_indx.port]);
if (dev != NULL) {
index = (uint8_t)atoi(argv[args_indx.index]);
shell_print(sh, "Configuring %s pin %d",
argv[args_indx.port], index);
gpio_pin_configure(dev, index, type);
}
return 0;
}
static int cmd_gpio_get(const struct shell *sh,
size_t argc, char **argv)
{
const struct device *dev;
uint8_t index = 0U;
int rc;
if (isdigit((unsigned char)argv[args_indx.index][0]) != 0) {
index = (uint8_t)atoi(argv[args_indx.index]);
} else {
shell_error(sh, "Wrong parameters for get");
return -EINVAL;
}
dev = device_get_binding(argv[args_indx.port]);
if (dev != NULL) {
index = (uint8_t)atoi(argv[2]);
shell_print(sh, "Reading %s pin %d",
argv[args_indx.port], index);
rc = gpio_pin_get(dev, index);
if (rc >= 0) {
shell_print(sh, "Value %d", rc);
} else {
shell_error(sh, "Error %d reading value", rc);
return -EIO;
}
}
return 0;
}
static int cmd_gpio_set(const struct shell *sh,
size_t argc, char **argv)
{
const struct device *dev;
uint8_t index = 0U;
uint8_t value = 0U;
if (isdigit((unsigned char)argv[args_indx.index][0]) != 0 &&
isdigit((unsigned char)argv[args_indx.value][0]) != 0) {
index = (uint8_t)atoi(argv[args_indx.index]);
value = (uint8_t)atoi(argv[args_indx.value]);
} else {
shell_print(sh, "Wrong parameters for set");
return -EINVAL;
}
dev = device_get_binding(argv[args_indx.port]);
if (dev != NULL) {
index = (uint8_t)atoi(argv[2]);
shell_print(sh, "Writing to %s pin %d",
argv[args_indx.port], index);
gpio_pin_set(dev, index, value);
}
return 0;
}
/* 500 msec = 1/2 sec */
#define SLEEP_TIME_MS 500
static int cmd_gpio_blink(const struct shell *sh,
size_t argc, char **argv)
{
const struct device *dev;
uint8_t index = 0U;
uint8_t value = 0U;
size_t count = 0;
char data;
if (isdigit((unsigned char)argv[args_indx.index][0]) != 0) {
index = (uint8_t)atoi(argv[args_indx.index]);
} else {
shell_error(sh, "Wrong parameters for blink");
return -EINVAL;
}
dev = device_get_binding(argv[args_indx.port]);
if (dev != NULL) {
index = (uint8_t)atoi(argv[2]);
shell_fprintf(sh, SHELL_NORMAL, "Blinking port %s index %d.", argv[1], index);
shell_fprintf(sh, SHELL_NORMAL, " Hit any key to exit");
/* dummy read to clear any pending input */
(void)sh->iface->api->read(sh->iface, &data, sizeof(data), &count);
while (true) {
(void)sh->iface->api->read(sh->iface, &data, sizeof(data), &count);
if (count != 0) {
break;
}
gpio_pin_set(dev, index, value);
value = !value;
k_msleep(SLEEP_TIME_MS);
}
shell_fprintf(sh, SHELL_NORMAL, "\n");
}
return 0;
}
SHELL_STATIC_SUBCMD_SET_CREATE(sub_gpio,
SHELL_CMD_ARG(conf, NULL, "Configure GPIO", cmd_gpio_conf, 4, 0),
SHELL_CMD_ARG(get, NULL, "Get GPIO value", cmd_gpio_get, 3, 0),
SHELL_CMD_ARG(set, NULL, "Set GPIO", cmd_gpio_set, 4, 0),
SHELL_CMD_ARG(blink, NULL, "Blink GPIO", cmd_gpio_blink, 3, 0),
SHELL_SUBCMD_SET_END /* Array terminated. */
);
SHELL_CMD_REGISTER(gpio, &sub_gpio, "GPIO commands", NULL);