[ARTIK 050] USB UART

1. 개요

  ARTIK 050에는 DEBUG용 UART와 기본 UART핀이 1세트가 존재합니다. 간단하게 5핀 UART USB모듈을 연결하여 2개의 터미널로 통신을 하는 소스코드입니다.

2. 회로

  특별한 작업 필요 없이 모듈을 보드에 바로 연결하시면 됩니다.

3. Source Code

#include "wiced.h" #define RX_BUFFER_SIZE 64 #define TEST_STR "\r\nType something! Keystrokes are echoed to the terminal ...\r\n> " wiced_uart_config_t uart_config = { .baud_rate = 115200, .data_width = DATA_WIDTH_8BIT, .parity = NO_PARITY, .stop_bits = STOP_BITS_1, .flow_control = FLOW_CONTROL_DISABLED, }; wiced_uart_config_t uart_config2 = { .baud_rate = 115200, .data_width = DATA_WIDTH_8BIT, .parity = NO_PARITY, .stop_bits = STOP_BITS_1, .flow_control = FLOW_CONTROL_DISABLED, }; wiced_ring_buffer_t rx_buffer,rx_buffer2; uint8_t rx_data[RX_BUFFER_SIZE],rx_data2[RX_BUFFER_SIZE]; /****************************************************** * Function Definitions ******************************************************/ void application_start( ) { char c; uint32_t expected_data_size = 1; /* Initialise ring buffer */ ring_buffer_init(&rx_buffer, rx_data, RX_BUFFER_SIZE ); ring_buffer_init(&rx_buffer2, rx_data2, RX_BUFFER_SIZE ); /* Initialise UART. A ring buffer is used to hold received characters */ wiced_uart_init( STDIO_UART, &uart_config, &rx_buffer ); wiced_uart_init( WICED_UART_2, &uart_config2, &rx_buffer2); /* Send a test string to the terminal */ wiced_uart_transmit_bytes( STDIO_UART, TEST_STR, sizeof( TEST_STR ) - 1 ); /* Wait for user input. If rsseceived, echo it back to the terminal */ while ( wiced_uart_receive_bytes( STDIO_UART, &c, &expected_data_size, WICED_NEVER_TIMEOUT ) == WICED_SUCCESS ) { wiced_uart_transmit_bytes( WICED_UART_2, &c, 1 ); expected_data_size = 1; } }

4. 결과

  디버그용 UART(COM4)에서 입력을 하면 모듈 UART(COM3)에서 출력이 나옵니다.

5. 소스 저장소

• https://github.com/cckr2/ARITK