Libraries
Background
lpcUARTIO.c – UART device I/O functions
The UART functions provide basic I/O over a serial link.| Functions | |
|---|---|
| uartGetcIO | get character from UART device |
| uartInitIO | initialize port for I/O |
| uartPutcIO | send character to UART device |
uartGetcIO – get character from UART device
int uartGetcIO(uint uart);
uart – ID of UART to read
returns character read from UART, or −1 if none there or UART does not exist
This function does not block. It returns an int so that errors are distinct, and will also allow extension.
uartInitIO – initialize port for I/O
int uartInitIO(uint uart, uint baud);
uart – ID of UART to initialize
baud – rate to run uart communications
returns 0 if OK, or −1 if uart does not exist
uartPutcIO – send character to UART device
int uartPutcIO(uint uart, int ch);
uart – ID of UART to send character to
ch – character to send
returns 0 if OK, or −1 if uart does not exist
This waits for any previous send to complete. The character, ch, is an int to allow future extension.