driver: serial: uart_shell: Add read command (e1db87e5) · Commits · Wenxi XU / zephyr

drivers/serial/uart_shell.c

+53 −2

Original line number	Diff line number	Diff line
		@@ -36,13 +36,56 @@ static int cmd_uart_write(const struct shell sh, size_t argc, char *argv)
		return 0;
		}


		static int cmd_uart_read(const struct shell sh, size_t argc, char *argv)
		{
		char *s_dev_name = argv[1];
		const struct device *dev = shell_device_get_binding(s_dev_name);
		int ret = 0;
		char chr;
		k_timepoint_t end;
		uint64_t seconds;

		if (!dev \|\| !device_is_uart(dev)) {
		shell_error(sh, "UART: Device driver %s not found.", s_dev_name);
		return -ENODEV;
		}

		seconds = shell_strtoul(argv[2], 10, &ret);
		if (ret != 0) {
		shell_help(sh);
		return SHELL_CMD_HELP_PRINTED;
		}
		if (seconds < 1) {
		return -EINVAL;
		}
		shell_info(sh, "UART: Read for %lli seconds from %s.", seconds, s_dev_name);

		end = sys_timepoint_calc(K_SECONDS(seconds));
		while (!sys_timepoint_expired(end)) {
		ret = uart_poll_in(dev, &chr);
		if (ret == 0) {
		shell_fprintf_normal(sh, "%c", chr);
		}
		if (ret != 0 && ret != -1) {
		shell_error(sh, "Failed to read from UART (%d)", ret);
		break;
		}
		}

		shell_fprintf_normal(sh, "\n");

		return ret;
		}


		static int cmd_uart_baudrate(const struct shell sh, size_t argc, char *argv)
		{
		char *s_dev_name = argv[1];
		const struct device *dev;
		struct uart_config cfg;
		uint32_t baudrate;
		int ret;
		int ret = 0;

		dev = shell_device_get_binding(s_dev_name);
		if (!dev \|\| !device_is_uart(dev)) {
		@@ -50,7 +93,11 @@ static int cmd_uart_baudrate(const struct shell sh, size_t argc, char *argv)
		return -ENODEV;
		}

		baudrate = strtol(argv[2], NULL, 10);
		baudrate = shell_strtoul(argv[2], 10, &ret);
		if (ret != 0) {
		shell_help(sh);
		return SHELL_CMD_HELP_PRINTED;
		}
		ret = uart_config_get(dev, &cfg);
		if (ret < 0) {
		shell_error(sh, "UART: Failed to get current configuration: %d", ret);
		@@ -126,6 +173,10 @@ SHELL_STATIC_SUBCMD_SET_CREATE(sub_uart_cmds,
		"Write data to the UART device\n"
		"Usage: write <device> <data>",
		cmd_uart_write, 3, 0),
		SHELL_CMD_ARG(read, &dsub_device_name,
		"read data from the UART device\n"
		"Usage: read <device> <duration in secs>",
		cmd_uart_read, 3, 0),
		SHELL_CMD_ARG(baudrate, &dsub_device_name,
		"Configure UART device baudrate\n"
		"Usage: baudrate <device> <baudrate>",

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