rp2/machine_uart: Clear timeout_char when UART is first constructed.

dpgeorge · dpgeorge · commit 51663b9aa71e · 2024-10-15T12:23:06.000+11:00
Otherwise a previous value of `timeout_char` may be left over after a soft
reset.

Signed-off-by: Damien George &lt;damien@micropython.org&gt;
diff --git a/ports/rp2/machine_uart.c b/ports/rp2/machine_uart.c
@@ -390,6 +390,7 @@ static void mp_machine_uart_init_helper(machine_uart_obj_t *self, size_t n_args,
     if (n_args > 0 || kw_args->used > 0 || self->baudrate == 0) {
         if (self->baudrate == 0) {
             self->baudrate = DEFAULT_UART_BAUDRATE;
+            self->timeout_char = 0;
         }
 
         // Make sure timeout_char is at least as long as a whole character (13 bits to be safe).

Original file line number	Diff line number	Diff line change
`@@ -390,6 +390,7 @@ static void mp_machine_uart_init_helper(machine_uart_obj_t *self, size_t n_args,`
`390`	`390`	`if (n_args > 0 \|\| kw_args->used > 0 \|\| self->baudrate == 0) {`
`391`	`391`	`if (self->baudrate == 0) {`
`392`	`392`	`self->baudrate = DEFAULT_UART_BAUDRATE;`
	`393`	`+ self->timeout_char = 0;`
`393`	`394`	`}`
`394`	`395`
`395`	`396`	`// Make sure timeout_char is at least as long as a whole character (13 bits to be safe).`