6ba0563fe2
Added shell command for UART. Currently only able to set baudrate and flow control. Signed-off-by: Yishai Jaffe <yishai1999@gmail.com>
116 lines
3 KiB
C
116 lines
3 KiB
C
/*
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* Copyright (c) 2024 Yishai Jaffe <yishai1999@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/drivers/uart.h>
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#include <zephyr/shell/shell.h>
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#include <stdlib.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(uart_shell, CONFIG_LOG_DEFAULT_LEVEL);
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static bool device_is_uart(const struct device *dev)
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{
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return DEVICE_API_IS(uart, dev);
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}
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static int cmd_uart_baudrate(const struct shell *sh, size_t argc, char **argv)
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{
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char *s_dev_name = argv[1];
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const struct device *dev;
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struct uart_config cfg;
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uint32_t baudrate;
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int ret;
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dev = shell_device_get_binding(s_dev_name);
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if (!dev || !device_is_uart(dev)) {
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shell_error(sh, "UART: Device driver %s not found.", s_dev_name);
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return -ENODEV;
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}
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baudrate = strtol(argv[2], NULL, 10);
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ret = uart_config_get(dev, &cfg);
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if (ret < 0) {
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shell_error(sh, "UART: Failed to get current configuration: %d", ret);
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return ret;
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}
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cfg.baudrate = baudrate;
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ret = uart_configure(dev, &cfg);
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if (ret < 0) {
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shell_error(sh, "UART: Failed to configure device: %d", ret);
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return ret;
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}
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return 0;
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}
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static int cmd_uart_flow_control(const struct shell *sh, size_t argc, char **argv)
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{
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char *s_dev_name = argv[1];
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const struct device *dev;
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struct uart_config cfg;
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uint8_t flow_control;
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int ret;
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dev = shell_device_get_binding(s_dev_name);
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if (!dev || !device_is_uart(dev)) {
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shell_error(sh, "UART: Device driver %s not found.", s_dev_name);
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return -ENODEV;
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}
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if (!strcmp(argv[2], "none")) {
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flow_control = UART_CFG_FLOW_CTRL_NONE;
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} else if (!strcmp(argv[2], "rtscts")) {
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flow_control = UART_CFG_FLOW_CTRL_RTS_CTS;
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} else if (!strcmp(argv[2], "dtrdsr")) {
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flow_control = UART_CFG_FLOW_CTRL_DTR_DSR;
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} else if (!strcmp(argv[2], "rs485")) {
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flow_control = UART_CFG_FLOW_CTRL_RS485;
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} else {
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shell_error(sh, "Unknown: '%s'", argv[2]);
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shell_help(sh);
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return SHELL_CMD_HELP_PRINTED;
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}
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ret = uart_config_get(dev, &cfg);
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if (ret < 0) {
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shell_error(sh, "UART: Failed to get current configuration: %d", ret);
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return ret;
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}
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cfg.flow_ctrl = flow_control;
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ret = uart_configure(dev, &cfg);
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if (ret < 0) {
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shell_error(sh, "UART: Failed to configure device: %d", ret);
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return ret;
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}
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return 0;
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}
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static void device_name_get(size_t idx, struct shell_static_entry *entry)
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{
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const struct device *dev = shell_device_filter(idx, device_is_uart);
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entry->syntax = (dev != NULL) ? dev->name : NULL;
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entry->handler = NULL;
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entry->help = NULL;
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entry->subcmd = NULL;
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}
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SHELL_DYNAMIC_CMD_CREATE(dsub_device_name, device_name_get);
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SHELL_STATIC_SUBCMD_SET_CREATE(sub_uart_cmds,
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SHELL_CMD_ARG(baudrate, &dsub_device_name,
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"Configure UART device baudrate\n"
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"Usage: baudrate <device> <baudrate>",
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cmd_uart_baudrate, 3, 0),
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SHELL_CMD_ARG(fc, &dsub_device_name,
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"Configure UART device flow control\n"
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"Usage: fc <device> <none|rtscts|dtrdsr|rs485>",
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cmd_uart_flow_control, 3, 0),
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SHELL_SUBCMD_SET_END /* Array terminated. */
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);
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SHELL_CMD_REGISTER(uart, &sub_uart_cmds, "UART commands", NULL);
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