ports/mega: Run Arduino Mega 2560 serial at 38400

This triggers our custom serial driver to enable XON/XOFF flow control so that communication with the board is reliable. Signed-off-by: Keith Packard <keithp@keithp.com>
keith-packard · Nov 13, 2019 · bc1c900 · bc1c900
1 parent 06a895e
commit bc1c900
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diff --git a/chips/atmega/snek-atmega-serial.c b/chips/atmega/snek-atmega-serial.c
@@ -15,7 +15,9 @@
 #include "snek.h"
 
 /* UART baud rate */
+#ifndef UART_BAUD
 #define UART_BAUD  		115200
+#endif
 #define UART_BAUD_U2X(div)	((F_CPU / (div) / UART_BAUD - 1) / 2)
 #define UART_U2X		(UART_BAUD_U2X(4) <= 4095)
 #define UART_BAUD_SCALE		(UART_U2X ? UART_BAUD_U2X(4) : UART_BAUD_U2X(8))

diff --git a/ports/mega/snek-mega.builtin b/ports/mega/snek-mega.builtin
@@ -85,3 +85,4 @@ A15, -2, 69
 #include <snek-atmega-math.h>
 #define SNEK_POOL 6144
 #define SNEK_MAX_TOKEN 63
+#define UART_BAUD 38400