From dd14a9447adcfbb81ef19eb355cc192ef6f2100a Mon Sep 17 00:00:00 2001
From: Timur Iskhodzhanov <timurrrr@gmail.com>
Date: Sat, 13 Aug 2022 21:52:00 -0700
Subject: [PATCH] Make the baud rate of the CAN bus car-specific.

---
 RaceChronoDiyBleDevice.ino |  1 -
 config.h                   | 10 ++++++++--
 configs/ft86_gen1.h        |  4 +++-
 configs/ft86_gen2.h        |  4 +++-
 4 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/RaceChronoDiyBleDevice.ino b/RaceChronoDiyBleDevice.ino
index 95a8e83..f1ba8de 100644
--- a/RaceChronoDiyBleDevice.ino
+++ b/RaceChronoDiyBleDevice.ino
@@ -17,7 +17,6 @@ const int IRQ_PIN = 9;
 
 const long QUARTZ_CLOCK_FREQUENCY = 16 * 1E6;  // 16 MHz.
 const uint32_t SPI_FREQUENCY = 10 * 1E6;  // 10 MHz.
-const long BAUD_RATE = 500 * 1E3;  // 500k.
 
 bool isCanBusReaderActive = false;
 long lastCanMessageReceivedMs;
diff --git a/config.h b/config.h
index 33cf7a6..b73aac5 100644
--- a/config.h
+++ b/config.h
@@ -1,7 +1,7 @@
 #if !defined(RACECHRONO_BIY_BLE_DEVICE_CONFIG_H)
 #define RACECHRONO_BIY_BLE_DEVICE_CONFIG_H
 
-// Change the value
+// Change the value to customize the name of your device.
 #define DEVICE_NAME "BLE CAN device demo"
 
 // We use RaceChronoPidMap to keep track of stuff for each CAN ID.
@@ -11,13 +11,19 @@
 const uint8_t DEFAULT_UPDATE_RATE_DIVIDER = 10;
 
 // You need to pick one of the provided configurations below, or define your own
-// configuration. Your configuration should define the following two functions:
+// configuration. Your configuration should define the following constant and
+// function:
+
+// Defines the baud rate to use for the CAN bus. For example, 500k baud rate
+// should be written as 500 * 1e3.
+extern const long BAUD_RATE;  // 500k.
 
 // Returns an "update rate divider for a given CAN ID.
 // If the value is N, only every Nth message received from the CAN bus will be
 // communicated to RaceChrono via BLE.
 uint8_t getUpdateRateDivider(uint32_t can_id);
 
+
 // Here are some configurations you can pick from by uncommenting one of the
 // following lines:
 //#include "configs/ft86_gen1.h"
diff --git a/configs/ft86_gen1.h b/configs/ft86_gen1.h
index dfdc89c..de895c4 100644
--- a/configs/ft86_gen1.h
+++ b/configs/ft86_gen1.h
@@ -2,7 +2,9 @@
 // (2013-2020 model years).
 
 #if !defined(RACECHRONO_BIY_BLE_DEVICE_FT86_GEN1_H)
-#define RACECHRONO_BIY_BLE_DEVICE_FT86_GEN1_H)
+#define RACECHRONO_BIY_BLE_DEVICE_FT86_GEN1_H
+
+const long BAUD_RATE = 500 * 1e3;  // 500k.
 
 uint8_t getUpdateRateDivider(uint32_t can_id) {
   switch (can_id) {
diff --git a/configs/ft86_gen2.h b/configs/ft86_gen2.h
index d928782..f93a81c 100644
--- a/configs/ft86_gen2.h
+++ b/configs/ft86_gen2.h
@@ -2,7 +2,9 @@
 // (2022+ model years).
 
 #if !defined(RACECHRONO_BIY_BLE_DEVICE_FT86_GEN2_H)
-#define RACECHRONO_BIY_BLE_DEVICE_FT86_GEN2_H)
+#define RACECHRONO_BIY_BLE_DEVICE_FT86_GEN2_H
+
+const long BAUD_RATE = 500 * 1e3;  // 500k.
 
 uint8_t getUpdateRateDivider(uint32_t can_id) {
   // This is sent over the CAN bus 50 times per second and includes brake