UART

This section covers functions related to the UART peripheral. More...

Functions
void	watch_enable_uart (const uint8_t tx_pin, const uint8_t rx_pin, uint32_t baud)
	Initializes the debug UART. More...
void	watch_uart_puts (char *s)
	Transmits a string of bytes on the UART's TX pin. More...
char	watch_uart_getc (void)
	Receives a single byte from the UART's RX pin. More...
	__attribute__ ((deprecated("Use watch_enable_uart to enable the UART."))) void watch_enable_debug_uart(uint32_t baud)
	Initializes the debug UART. More...
	__attribute__ ((deprecated("Use watch_uart_puts to print to the UART, or printf to log debug messages over USB."))) void watch_debug_putc(char c)
	Outputs a single character on the debug UART. More...

Detailed Description

This section covers functions related to the UART peripheral.

Function Documentation

__attribute__() [1/2]

__attribute__

(

(deprecated("Use watch_enable_uart to enable the UART."))

)

Initializes the debug UART.

Parameters

baud	The baud rate

__attribute__() [2/2]

__attribute__

(

(deprecated("Use watch_uart_puts to print to the UART, or printf to log debug messages over USB."))

)

Outputs a single character on the debug UART.

Outputs a string on the debug UART.

Parameters

c	The character you wish to output.
s	A null-terminated string.

watch_enable_uart()

void watch_enable_uart	(	const uint8_t	tx_pin,
		const uint8_t	rx_pin,
		uint32_t	baud
	)

Initializes the debug UART.

Parameters

tx_pin	The pin the watch will use to transmit, or 0 for a receive-only UART. If specified, must be either A2 or A4.
rx_pin	The pin the watch will use to receive, or 0 for a transmit-only UART. If specified, must be A1, A2, A3 or A4 (pin A0 cannot receive UART data).
baud	The baud rate for the UART. A typical value is 19200.

watch_uart_getc()

char watch_uart_getc

(

void

)

Receives a single byte from the UART's RX pin.

Returns

the received byte.

Note

This method will block until a byte is received!

watch_uart_puts()

void watch_uart_puts

(

char *

s

)

Transmits a string of bytes on the UART's TX pin.

Parameters

s	A null-terminated string containing the bytes you wish to transmit.