From 7548a730016c1751a79838fb47753e36ce55dda1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C4=99drzej=20Boczar?= <jboczar@antmicro.com>
Date: Wed, 8 Jan 2020 14:45:45 +0100
Subject: [PATCH] increase default baud rate to 115200, add option to set
 baudrate

---
 examples/serial-cdc-loopback/Makefile  | 3 +++
 examples/serial-cdc-loopback/README.md | 2 ++
 examples/serial-cdc-loopback/main.c    | 2 +-
 examples/serial-loopback/Makefile      | 3 +++
 examples/serial-loopback/README.md     | 2 ++
 examples/serial-loopback/main.c        | 2 +-
 6 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/examples/serial-cdc-loopback/Makefile b/examples/serial-cdc-loopback/Makefile
index bfc396a..39df9bf 100644
--- a/examples/serial-cdc-loopback/Makefile
+++ b/examples/serial-cdc-loopback/Makefile
@@ -5,6 +5,9 @@ FLAGS     = -I../../common -DDEBUG
 SOURCES   = main descriptors ../../common/cdc ../../common/uart
 
 BITBANG ?= 1
+BAUDRATE ?= 115200
+
+FLAGS += -DBAUDRATE=$(BAUDRATE)
 
 ifeq ($(BITBANG), 1)
 FLAGS += -DUART_SOFTWARE_BITBANG=1 \
diff --git a/examples/serial-cdc-loopback/README.md b/examples/serial-cdc-loopback/README.md
index 2d47966..f22bdf1 100644
--- a/examples/serial-cdc-loopback/README.md
+++ b/examples/serial-cdc-loopback/README.md
@@ -9,6 +9,8 @@ To run the example the pins used for UART TX and RX must be externally connected
 Alternatively, any data sent to UART RX pin will be passed over CDC-ACM, and any
 data sent over USB will be sent over UART TX pin with some data modifications.
 
+UART baudrate can be set using `BAUDRATE` *Makefile* variable.
+
 ## UART Configuration
 
 See the README for serial-loopback example. `../serial-loopback/README.md`.
diff --git a/examples/serial-cdc-loopback/main.c b/examples/serial-cdc-loopback/main.c
index c2a0a6c..87f86f8 100644
--- a/examples/serial-cdc-loopback/main.c
+++ b/examples/serial-cdc-loopback/main.c
@@ -48,7 +48,7 @@ int main() {
   SYNCDELAY; FIFORESET = 0;
 
   // configure and start bitbang uart
-  uart_init(9600, UART_MODE_RX_TX);
+  uart_init(BAUDRATE, UART_MODE_RX_TX);
 
   // Re-enumerate, to make sure our descriptors are picked up correctly.
   usb_init(/*disconnect=*/true);
diff --git a/examples/serial-loopback/Makefile b/examples/serial-loopback/Makefile
index 04476bd..dab081b 100644
--- a/examples/serial-loopback/Makefile
+++ b/examples/serial-loopback/Makefile
@@ -5,6 +5,9 @@ FLAGS     = -I../../common -DDEBUG
 SOURCES   = main descriptors ../../common/cdc ../../common/uart
 
 BITBANG ?= 1
+BAUDRATE ?= 115200
+
+FLAGS += -DBAUDRATE=$(BAUDRATE)
 
 ifeq ($(BITBANG), 1)
 FLAGS += -DUART_SOFTWARE_BITBANG=1 \
diff --git a/examples/serial-loopback/README.md b/examples/serial-loopback/README.md
index 0b1d405..a504acb 100644
--- a/examples/serial-loopback/README.md
+++ b/examples/serial-loopback/README.md
@@ -11,6 +11,8 @@ The *Makefile* provided configures proper compilation flags.
 By default bitbanged UART implementation is used.
 To use hardware UART, run with `make` with `BITBANG=0`.
 
+UART baudrate can be set using `BAUDRATE` *Makefile* variable.
+
 ## UART Configuration
 
 UART implementation uses two statically allocated queues to store data,
diff --git a/examples/serial-loopback/main.c b/examples/serial-loopback/main.c
index 658933f..cc5811a 100644
--- a/examples/serial-loopback/main.c
+++ b/examples/serial-loopback/main.c
@@ -48,7 +48,7 @@ int main() {
   SYNCDELAY; FIFORESET = 0;
 
   // configure and start bitbang uart
-  uart_init(9600, UART_MODE_RX_TX);
+  uart_init(BAUDRATE, UART_MODE_RX_TX);
 
   // Re-enumerate, to make sure our descriptors are picked up correctly.
   usb_init(/*disconnect=*/true);