How to add RT-thread msh user command?

[danilliu-sudo]

hi, onelife.

I'm trying the Arduino_RT_Thread on my DUE board, It works good.
but when I using MSH_CMD_EXPORT() command to add my owe msh command, the Compile and download is ok, but msh does not recognize my command. (help has no display, and running the command will display "command not fount".
how can I work out this problem?
thanks.

my code is such as：

void disp(void) {
。。。
}
MSH_CMD_EXPORT(disp, display sample data);

[onelife]

Hi @danilliu-sudo,

There is an example of user commands, https://github.com/onelife/Arduino_RT-Thread/blob/v0.9.4/examples/FinSH/FinSH.ino:

Arduino_RT-Thread/examples/FinSH/FinSH.ino

Lines 68 to 95 in 2906ad8

	int led(int argc, char **argv) {
	// argc - the number of arguments
	// argv[0] - command name, e.g. "led"
	// argv[n] - nth argument in the type of char array
	rt_uint32_t id;
	rt_uint32_t state;
	if (argc != 3) {
	rt_kprintf("Usage: led <id> <state>\n");
	return 1;
	}
	rt_kprintf("led%s=%s\n", argv[1], argv[2]);
	// convert arguments to their specific types
	sscanf(argv[1], "%u", &id);
	sscanf(argv[2], "%u", &state);
	if (id != 0) {
	rt_kprintf("Error: Invalid led ID\n");
	return 1;
	}
	if (state) {
	digitalWrite(LED_BUILTIN, HIGH);
	} else {
	digitalWrite(LED_BUILTIN, LOW);
	}
	return 0;
	}

Uncomment the following line:

Arduino_RT-Thread/src/shell_cmd.h

Line 138 in 2906ad8

// ADD_MSH_CMD(led, Turn on/off builtin LED, led, rt_uint32_t, rt_uint32_t id, rt_uint8_t state)

Notes on using MSH user commands

• Enable flag CONFIG_USING_FINSH and CONFIG_USING_MSH.
• The command has to be defined as a C function.
  In .ino file, the function has to be wrapped in extern "C" { ... }.
• The function prototype is int the_command(int argc, char **argv).
• Add a line, ADD_MSH_CMD( ... ), in https://github.com/onelife/Arduino_RT-Thread/blob/v0.9.4/src/shell_cmd.h.