| Cdirent | Directory entry struct written by readdir() |
| Cinput_stream | Abstract reference to an input stream |
| Cinput_stream_from_file | Concrete struct for a file input stream |
| Cinput_stream_from_open_abstract_socket | Concrete struct for an abstract network protocol input stream |
| Cinput_stream_from_open_tcp_socket | Concrete struct for a tcp input stream |
| Cinput_stream_from_routine | Concrete struct for an abstract routine input stream |
| Cinput_stream_from_uart | Concrete struct for a Serial Line input stream |
| Cjsmn_parser | |
| Cjsmntok_t | |
| Cltrx_cpm_role | Represents a Configurable Pin role for registration |
| Cltrx_http_client_connect_info | HTTP client connect information |
| Cltrx_http_client_header | HTTP client header |
| Cltrx_ip_address | |
| Cltrx_line_capabilities | Represents capabilities of a Serial Line |
| Cltrx_line_driver | API's for a serial line driver |
| Cltrx_line_protocol | Represents a line protocol for registration |
| Cltrx_mqtt_client_connect_info | Contains MQTT client connection information |
| Cltrx_mqtt_client_network_info | Contains MQTT client network information |
| Cltrx_mqtt_len_string | MQTT length string |
| Cltrx_mqtt_message | Contains MQTT client message information |
| Cltrx_mqtt_message_data | MQTT message data |
| Cltrx_mqtt_string | MQTT string |
| Cltrx_network_protocol | Represents a network protocol for registration |
| Cltrx_power_level_application | Represents a power level application for registration |
| Cltrx_scan_result | Contains network information acquired from network scan |
| Cltrx_spi_descriptor | Describes input and output buffers for data transfer |
| Cltrx_spi_protocol | Represents a SPI protocol for registration |
| Cltrx_statfs | Contains file system statistics |
| Cltrx_tcp_listener | Abstract structure containing data for TCP listener |
| Cltrx_time | Represents "broken-down" time |
| Cltrx_time_source | Represents a time source for registration |
| Cltrx_udp_socket_options | Contains parameters for ltrx_udp_socket_open_with_options() |
| Cltrx_write_user_message_info | Abstract reference to environment |
| CMIB | |
| CMIBTAB | |
| CMIBVAR | |
| COID | |
| Coutput_stream | Abstract reference to an output stream |
| Coutput_stream_from_open_tcp_socket | Concrete struct for a tcp output stream |
| Coutput_stream_to_buffer | Concrete struct for a buffer output stream |
| Coutput_stream_to_file | Concrete struct for a file output stream |
| Coutput_stream_to_open_abstract_socket | Concrete struct for a network protocol output stream |
| Coutput_stream_to_uart | Concrete struct for a Serial Line output stream |
| Cxml_emit_value_specification | Specifies a value to emit |