140 lines
3.0 KiB
C
140 lines
3.0 KiB
C
/*
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* Copyright (c) 2019 Vestas Wind Systems A/S
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief PWM shell commands.
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*/
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#include <shell/shell.h>
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#include <drivers/pwm.h>
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#include <stdlib.h>
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struct args_index {
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u8_t device;
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u8_t pwm;
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u8_t period;
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u8_t pulse;
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u8_t flags;
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};
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static const struct args_index args_indx = {
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.device = 1,
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.pwm = 2,
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.period = 3,
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.pulse = 4,
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.flags = 5,
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};
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static int cmd_cycles(const struct shell *shell, size_t argc, char **argv)
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{
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pwm_flags_t flags = 0;
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struct device *dev;
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u32_t period;
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u32_t pulse;
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u32_t pwm;
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int err;
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dev = device_get_binding(argv[args_indx.device]);
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if (!dev) {
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shell_error(shell, "PWM device not found");
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return -EINVAL;
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}
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pwm = strtoul(argv[args_indx.pwm], NULL, 0);
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period = strtoul(argv[args_indx.period], NULL, 0);
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pulse = strtoul(argv[args_indx.pulse], NULL, 0);
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if (argc == (args_indx.flags + 1)) {
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flags = strtoul(argv[args_indx.flags], NULL, 0);
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}
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err = pwm_pin_set_cycles(dev, pwm, period, pulse, flags);
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if (err) {
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shell_error(shell, "failed to setup PWM (err %d)",
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err);
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return err;
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}
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return 0;
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}
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static int cmd_usec(const struct shell *shell, size_t argc, char **argv)
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{
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pwm_flags_t flags = 0;
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struct device *dev;
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u32_t period;
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u32_t pulse;
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u32_t pwm;
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int err;
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dev = device_get_binding(argv[args_indx.device]);
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if (!dev) {
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shell_error(shell, "PWM device not found");
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return -EINVAL;
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}
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pwm = strtoul(argv[args_indx.pwm], NULL, 0);
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period = strtoul(argv[args_indx.period], NULL, 0);
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pulse = strtoul(argv[args_indx.pulse], NULL, 0);
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if (argc == (args_indx.flags + 1)) {
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flags = strtoul(argv[args_indx.flags], NULL, 0);
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}
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err = pwm_pin_set_usec(dev, pwm, period, pulse, flags);
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if (err) {
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shell_error(shell, "failed to setup PWM (err %d)", err);
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return err;
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}
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return 0;
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}
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static int cmd_nsec(const struct shell *shell, size_t argc, char **argv)
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{
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pwm_flags_t flags = 0;
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struct device *dev;
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u32_t period;
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u32_t pulse;
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u32_t pwm;
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int err;
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dev = device_get_binding(argv[args_indx.device]);
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if (!dev) {
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shell_error(shell, "PWM device not found");
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return -EINVAL;
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}
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pwm = strtoul(argv[args_indx.pwm], NULL, 0);
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period = strtoul(argv[args_indx.period], NULL, 0);
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pulse = strtoul(argv[args_indx.pulse], NULL, 0);
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if (argc == (args_indx.flags + 1)) {
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flags = strtoul(argv[args_indx.flags], NULL, 0);
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}
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err = pwm_pin_set_nsec(dev, pwm, period, pulse, flags);
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if (err) {
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shell_error(shell, "failed to setup PWM (err %d)", err);
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return err;
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}
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return 0;
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}
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SHELL_STATIC_SUBCMD_SET_CREATE(pwm_cmds,
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SHELL_CMD_ARG(cycles, NULL, "<device> <pwm> <period in cycles> "
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"<pulse width in cycles> [flags]", cmd_cycles, 5, 1),
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SHELL_CMD_ARG(usec, NULL, "<device> <pwm> <period in usec> "
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"<pulse width in usec> [flags]", cmd_usec, 5, 1),
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SHELL_CMD_ARG(nsec, NULL, "<device> <pwm> <period in nsec> "
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"<pulse width in nsec> [flags]", cmd_nsec, 5, 1),
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SHELL_SUBCMD_SET_END
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);
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SHELL_CMD_REGISTER(pwm, &pwm_cmds, "PWM shell commands", NULL);
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