// Copyright 2016-2019 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #pragma once #ifdef __cplusplus extern "C" { #endif #include #include "sdkconfig.h" #include "esp_err.h" // Forward declaration. Definition in linenoise/linenoise.h. typedef struct linenoiseCompletions linenoiseCompletions; /** * @brief Parameters for console initialization */ typedef struct { size_t max_cmdline_length; //!< length of command line buffer, in bytes size_t max_cmdline_args; //!< maximum number of command line arguments to parse int hint_color; //!< ASCII color code of hint text int hint_bold; //!< Set to 1 to print hint text in bold } esp_console_config_t; /** * @brief Default console configuration value * */ #define ESP_CONSOLE_CONFIG_DEFAULT() \ { \ .max_cmdline_length = 256, \ .max_cmdline_args = 32, \ .hint_color = 39, \ .hint_bold = 0 \ } /** * @brief Parameters for console REPL (Read Eval Print Loop) * */ typedef struct { uint32_t max_history_len; //!< maximum length for the history const char *history_save_path; //!< file path used to save history commands, set to NULL won't save to file system uint32_t task_stack_size; //!< repl task stack size uint32_t task_priority; //!< repl task priority const char *prompt; //!< prompt (NULL represents default: "esp> ") union { struct { int channel; //!< UART channel uint32_t baud_rate; //!< Comunication baud rate int tx_gpio; //!< GPIO number for TX path, -1 means using the default int rx_gpio; //!< GPIO number for RX path, -1 means using the default } uart; //!< UART specific configuration } device; //!< device configuration } esp_console_repl_config_t; #ifdef CONFIG_ESP_CONSOLE_UART_NUM #define CONSOLE_DEFAULT_UART_CHANNEL CONFIG_ESP_CONSOLE_UART_NUM #else #define CONSOLE_DEFAULT_UART_CHANNEL 0 #endif #ifdef CONFIG_ESP_CONSOLE_UART_BAUDRATE #define CONSOLE_DEFAULT_UART_BAUDRATE CONFIG_ESP_CONSOLE_UART_BAUDRATE #else #define CONSOLE_DEFAULT_UART_BAUDRATE 115200 #endif #ifdef CONFIG_ESP_CONSOLE_UART_TX_GPIO #define CONSOLE_DEFAULT_UART_TX_GPIO CONFIG_ESP_CONSOLE_UART_TX_GPIO #else #define CONSOLE_DEFAULT_UART_TX_GPIO 1 #endif #ifdef CONFIG_ESP_CONSOLE_UART_RX_GPIO #define CONSOLE_DEFAULT_UART_RX_GPIO CONFIG_ESP_CONSOLE_UART_RX_GPIO #else #define CONSOLE_DEFAULT_UART_RX_GPIO 3 #endif /** * @brief Default console repl configuration value * */ #define ESP_CONSOLE_REPL_CONFIG_DEFAULT() \ { \ .max_history_len = 32, \ .history_save_path = NULL, \ .task_stack_size = 4096, \ .task_priority = 2, \ .prompt = NULL, \ .device = { \ .uart = { \ .channel = CONSOLE_DEFAULT_UART_CHANNEL, \ .baud_rate = CONSOLE_DEFAULT_UART_BAUDRATE, \ .tx_gpio = CONSOLE_DEFAULT_UART_TX_GPIO, \ .rx_gpio = CONSOLE_DEFAULT_UART_RX_GPIO, \ } \ } \ } /** * @brief initialize console module * @param config console configuration * @note Call this once before using other console module features * @return * - ESP_OK on success * - ESP_ERR_NO_MEM if out of memory * - ESP_ERR_INVALID_STATE if already initialized * - ESP_ERR_INVALID_ARG if the configuration is invalid */ esp_err_t esp_console_init(const esp_console_config_t *config); /** * @brief de-initialize console module * @note Call this once when done using console module functions * @return * - ESP_OK on success * - ESP_ERR_INVALID_STATE if not initialized yet */ esp_err_t esp_console_deinit(void); /** * @brief Console command main function * @param argc number of arguments * @param argv array with argc entries, each pointing to a zero-terminated string argument * @return console command return code, 0 indicates "success" */ typedef int (*esp_console_cmd_func_t)(int argc, char **argv); /** * @brief Console command description */ typedef struct { /** * Command name. Must not be NULL, must not contain spaces. * The pointer must be valid until the call to esp_console_deinit. */ const char *command; /** * Help text for the command, shown by help command. * If set, the pointer must be valid until the call to esp_console_deinit. * If not set, the command will not be listed in 'help' output. */ const char *help; /** * Hint text, usually lists possible arguments. * If set to NULL, and 'argtable' field is non-NULL, hint will be generated * automatically */ const char *hint; /** * Pointer to a function which implements the command. */ esp_console_cmd_func_t func; /** * Array or structure of pointers to arg_xxx structures, may be NULL. * Used to generate hint text if 'hint' is set to NULL. * Array/structure which this field points to must end with an arg_end. * Only used for the duration of esp_console_cmd_register call. */ void *argtable; } esp_console_cmd_t; /** * @brief Register console command * @param cmd pointer to the command description; can point to a temporary value * @return * - ESP_OK on success * - ESP_ERR_NO_MEM if out of memory * - ESP_ERR_INVALID_ARG if command description includes invalid arguments */ esp_err_t esp_console_cmd_register(const esp_console_cmd_t *cmd); /** * @brief Run command line * @param cmdline command line (command name followed by a number of arguments) * @param[out] cmd_ret return code from the command (set if command was run) * @return * - ESP_OK, if command was run * - ESP_ERR_INVALID_ARG, if the command line is empty, or only contained * whitespace * - ESP_ERR_NOT_FOUND, if command with given name wasn't registered * - ESP_ERR_INVALID_STATE, if esp_console_init wasn't called */ esp_err_t esp_console_run(const char *cmdline, int *cmd_ret); /** * @brief Split command line into arguments in place * @verbatim * - This function finds whitespace-separated arguments in the given input line. * * 'abc def 1 20 .3' -> [ 'abc', 'def', '1', '20', '.3' ] * * - Argument which include spaces may be surrounded with quotes. In this case * spaces are preserved and quotes are stripped. * * 'abc "123 456" def' -> [ 'abc', '123 456', 'def' ] * * - Escape sequences may be used to produce backslash, double quote, and space: * * 'a\ b\\c\"' -> [ 'a b\c"' ] * @endverbatim * @note Pointers to at most argv_size - 1 arguments are returned in argv array. * The pointer after the last one (i.e. argv[argc]) is set to NULL. * * @param line pointer to buffer to parse; it is modified in place * @param argv array where the pointers to arguments are written * @param argv_size number of elements in argv_array (max. number of arguments) * @return number of arguments found (argc) */ size_t esp_console_split_argv(char *line, char **argv, size_t argv_size); /** * @brief Callback which provides command completion for linenoise library * * When using linenoise for line editing, command completion support * can be enabled like this: * * linenoiseSetCompletionCallback(&esp_console_get_completion); * * @param buf the string typed by the user * @param lc linenoiseCompletions to be filled in */ void esp_console_get_completion(const char *buf, linenoiseCompletions *lc); /** * @brief Callback which provides command hints for linenoise library * * When using linenoise for line editing, hints support can be enabled as * follows: * * linenoiseSetHintsCallback((linenoiseHintsCallback*) &esp_console_get_hint); * * The extra cast is needed because linenoiseHintsCallback is defined as * returning a char* instead of const char*. * * @param buf line typed by the user * @param[out] color ANSI color code to be used when displaying the hint * @param[out] bold set to 1 if hint has to be displayed in bold * @return string containing the hint text. This string is persistent and should * not be freed (i.e. linenoiseSetFreeHintsCallback should not be used). */ const char *esp_console_get_hint(const char *buf, int *color, int *bold); /** * @brief Register a 'help' command * * Default 'help' command prints the list of registered commands along with * hints and help strings. * * @return * - ESP_OK on success * - ESP_ERR_INVALID_STATE, if esp_console_init wasn't called */ esp_err_t esp_console_register_help_command(void); /****************************************************************************** * Console REPL ******************************************************************************/ /** * @brief Initialize console REPL environment * * @param config REPL configuration * * @note This is a all-in-one function to establish the environment needed for REPL, includes: * - Install the UART driver on the console UART (8n1, 115200, REF_TICK clock source) * - Configures the stdin/stdout to go through the UART driver * - Initializes linenoise * - Spawn new thread to run REPL in the background * * @attention This function is meant to be used in the examples to make the code more compact. * Applications which use console functionality should be based on * the underlying linenoise and esp_console functions. * * @return * - ESP_OK on success * - ESP_FAIL Parameter error */ esp_err_t esp_console_repl_init(const esp_console_repl_config_t *config); /** * @brief Start REPL task * * @return * - ESP_OK on success * - ESP_ERR_INVALID_STATE, if repl has started already */ esp_err_t esp_console_repl_start(void); /** * @brief Register a 'quit' command * * Default 'quit' command will destory resources and exit REPL environment. * * @return * - ESP_OK on success * - others on failed */ esp_err_t esp_console_register_quit_command(void); #ifdef __cplusplus } #endif