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drivers: dac: add DAC shell commands

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Add shell commands for controlling digital-to-analog (DAC) devices.

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
This commit is contained in:
Henrik Brix Andersen 2020-02-16 20:55:58 +01:00 committed by Maureen Helm
parent ae2b3587e6
commit 8a5ba4539c
3 changed files with 107 additions and 0 deletions
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1
drivers/dac/CMakeLists.txt
View file

@ -5,4 +5,5 @@ zephyr_library()
zephyr_library_sources_ifdef(CONFIG_DAC_MCUX_DAC dac_mcux_dac.c)
zephyr_library_sources_ifdef(CONFIG_DAC_MCUX_DAC32 dac_mcux_dac32.c)
zephyr_library_sources_ifdef(CONFIG_DAC_STM32 dac_stm32.c)
zephyr_library_sources_ifdef(CONFIG_DAC_SHELL dac_shell.c)
zephyr_library_sources_ifdef(CONFIG_USERSPACE dac_handlers.c)

6
drivers/dac/Kconfig
View file

@ -17,6 +17,12 @@ module = DAC
module-str = DAC
source "subsys/logging/Kconfig.template.log_config"
config DAC_SHELL
bool "Enable DAC shell"
depends on SHELL
help
Enable DAC related shell commands.
source "drivers/dac/Kconfig.mcux"
source "drivers/dac/Kconfig.stm32"

100
drivers/dac/dac_shell.c Normal file
View file

@ -0,0 +1,100 @@
/*
* Copyright (c) 2020 Henrik Brix Andersen <henrik@brixandersen.dk>
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief DAC shell commands.
*/
#include <shell/shell.h>
#include <drivers/dac.h>
#include <stdlib.h>
struct args_index {
u8_t device;
u8_t channel;
u8_t reference;
u8_t value;
u8_t buffered;
u8_t resolution;
};
static const struct args_index args_indx = {
.device = 1,
.channel = 2,
.reference = 3,
.value = 3,
.buffered = 4,
.resolution = 4,
};
static int cmd_setup(const struct shell *shell, size_t argc, char **argv)
{
struct dac_channel_cfg cfg;
struct device *dac;
int err;
dac = device_get_binding(argv[args_indx.device]);
if (!dac) {
shell_error(shell, "DAC device not found");
return -EINVAL;
}
cfg.channel_id = strtoul(argv[args_indx.channel], NULL, 0);
/* TODO: Allow text input for reference */
cfg.reference = strtoul(argv[args_indx.reference], NULL, 0);
if (argc == (args_indx.buffered + 1)) {
cfg.buffered = strtoul(argv[args_indx.buffered], NULL, 2);
} else {
cfg.buffered = false;
}
err = dac_channel_setup(dac, &cfg);
if (err) {
shell_error(shell, "Failed to setup DAC channel (err %d)", err);
return err;
}
return 0;
}
static int cmd_write_value(const struct shell *shell, size_t argc, char **argv)
{
struct device *dac;
u8_t resolution;
u8_t channel;
u32_t value;
int err;
dac = device_get_binding(argv[args_indx.device]);
if (!dac) {
shell_error(shell, "DAC device not found");
return -EINVAL;
}
channel = strtoul(argv[args_indx.channel], NULL, 0);
value = strtoul(argv[args_indx.value], NULL, 0);
resolution = strtoul(argv[args_indx.resolution], NULL, 0);
err = dac_write_value(dac, channel, value, resolution);
if (err) {
shell_error(shell, "Failed to write DAC value (err %d)", err);
return err;
}
return 0;
}
SHELL_STATIC_SUBCMD_SET_CREATE(dac_cmds,
SHELL_CMD_ARG(setup, NULL, "<device> <channel> <reference> [buffered]",
cmd_setup, 4, 1),
SHELL_CMD_ARG(write_value, NULL, "<device> <channel> <value> <resolution>",
cmd_write_value, 5, 0),
SHELL_SUBCMD_SET_END
);
SHELL_CMD_REGISTER(dac, &dac_cmds, "DAC shell commands", NULL);