remove all remaining C implementation

esp_modem/include/esp_modem_config.h

@@ -0,0 +1,77 @@
+//
+// Created by david on 2/24/21.
+//
+
+#ifndef SIMPLE_CXX_CLIENT_ESP_MODEM_CONFIG_H
+#define SIMPLE_CXX_CLIENT_ESP_MODEM_CONFIG_H
+#include "driver/uart.h"
+
+/**
+ * @brief Modem flow control type
+ *
+ */
+typedef enum {
+    ESP_MODEM_FLOW_CONTROL_NONE = 0,
+    ESP_MODEM_FLOW_CONTROL_SW,
+    ESP_MODEM_FLOW_CONTROL_HW
+} esp_modem_flow_ctrl_t;
+
+struct esp_modem_dte_config {
+    uart_port_t port_num;           /*!< UART port number */
+    uart_word_length_t data_bits;   /*!< Data bits of UART */
+    uart_stop_bits_t stop_bits;     /*!< Stop bits of UART */
+    uart_parity_t parity;           /*!< Parity type */
+    esp_modem_flow_ctrl_t flow_control; /*!< Flow control type */
+    int baud_rate;             /*!< Communication baud rate */
+    int tx_io_num;                  /*!< TXD Pin Number */
+    int rx_io_num;                  /*!< RXD Pin Number */
+    int rts_io_num;                 /*!< RTS Pin Number */
+    int cts_io_num;                 /*!< CTS Pin Number */
+    int rx_buffer_size;             /*!< UART RX Buffer Size */
+    int tx_buffer_size;             /*!< UART TX Buffer Size */
+    int pattern_queue_size;         /*!< UART Pattern Queue Size */
+    int event_queue_size;           /*!< UART Event Queue Size */
+    uint32_t event_task_stack_size; /*!< UART Event Task Stack size */
+    int event_task_priority;        /*!< UART Event Task Priority */
+    int line_buffer_size;           /*!< Line buffer size for command mode */
+};
+
+/**
+ * @brief ESP Modem DTE Default Configuration
+ *
+ */
+#define ESP_MODEM_DTE_DEFAULT_CONFIG()          \
+    {                                           \
+        .port_num = UART_NUM_1,                 \
+        .data_bits = UART_DATA_8_BITS,          \
+        .stop_bits = UART_STOP_BITS_1,          \
+        .parity = UART_PARITY_DISABLE,          \
+        .flow_control = ESP_MODEM_FLOW_CONTROL_NONE,\
+        .baud_rate = 115200,                    \
+        .tx_io_num = 25,                        \
+        .rx_io_num = 26,                        \
+        .rts_io_num = 27,                       \
+        .cts_io_num = 23,                       \
+        .rx_buffer_size = 1024,                 \
+        .tx_buffer_size = 512,                  \
+        .pattern_queue_size = 20,               \
+        .event_queue_size = 30,                 \
+        .event_task_stack_size = 4096,          \
+        .event_task_priority = 5,               \
+        .line_buffer_size = 512                 \
+    }
+
+struct esp_modem_dce_config {
+    const char* apn;
+};
+
+#define ESP_MODEM_DCE_DEFAULT_CONFIG(APN)       \
+    {                                           \
+        .apn = APN                              \
+    }
+
+typedef struct esp_modem_dte_config esp_modem_dte_config_t;
+
+typedef struct esp_modem_dce_config esp_modem_dce_config_t;
+
+#endif //SIMPLE_CXX_CLIENT_ESP_MODEM_CONFIG_H