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-rw-r--r--docs/config_options.md37
-rw-r--r--quantum/split_common/serial.c2
-rw-r--r--quantum/split_common/split_util.c3
3 files changed, 37 insertions, 5 deletions
diff --git a/docs/config_options.md b/docs/config_options.md
index 4bbc5debd..085ab3ee5 100644
--- a/docs/config_options.md
+++ b/docs/config_options.md
@@ -197,8 +197,27 @@ If you define these options you will enable the associated feature, which may in
Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk
-* `#define SPLIT_HAND_PIN B7`
- * For using high/low pin to determine handedness, low = right hand, high = left hand. Replace 'B7' with the pin you are using. This is optional and you can still use the EEHANDS method or MASTER_LEFT / MASTER_RIGHT defines like the stock Let's Split uses.
+### Setting Handedness
+
+One thing to remember, the side that the USB port is plugged into is always the master half. The side not plugged into USB is the slave.
+
+There are a few different ways to set handedness for split keyboards (listed in order of precedence):
+
+1. Set `SPLIT_HAND_PIN`: Reads a pin to determine handedness. If pin is high, it's the left side, if low, the half is determined to be the right side
+2. Set `EE_HANDS` and flash `eeprom-lefthand.eep`/`eeprom-righthand.eep` to each half
+3. Set `MASTER_RIGHT`: Half that is plugged into the USB port is determined to be the master and right half (inverse of the default)
+4. Default: The side that is plugged into the USB port is the master half and is assumed to be the left half. The slave side is the right half
+
+* `#define SPLIT_HAND_PIN B7`
+ * For using high/low pin to determine handedness, low = right hand, high = left hand. Replace `B7` with the pin you are using. This is optional, and if you leave `SPLIT_HAND_PIN` undefined, then you can still use the EE_HANDS method or MASTER_LEFT / MASTER_RIGHT defines like the stock Let's Split uses.
+
+* `#define EE_HANDS` (only works if `SPLIT_HAND_PIN` is not defined)
+ * Reads the handedness value stored in the EEPROM after `eeprom-lefthand.eep`/`eeprom-righthand.eep` has been flashed to their respective halves.
+
+* `#define MASTER_RIGHT`
+ * Master half is defined to be the right half.
+
+### Other Options
* `#define USE_I2C`
* For using I2C instead of Serial (defaults to serial)
@@ -206,6 +225,20 @@ Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in yo
* `#define SOFT_SERIAL_PIN D0`
* When using serial, define this. `D0` or `D1`,`D2`,`D3`,`E6`.
+* `#define MATRIX_ROW_PINS_RIGHT { <row pins> }`
+* `#define MATRIX_COL_PINS_RIGHT { <col pins> }`
+ * If you want to specify a different pinout for the right half than the left half, you can define `MATRIX_ROW_PINS_RIGHT`/`MATRIX_COL_PINS_RIGHT`. Currently, the size of `MATRIX_ROW_PINS` must be the same as `MATRIX_ROW_PINS_RIGHT` and likewise for the definition of columns.
+
+* `#define SELECT_SOFT_SERIAL_SPEED <speed>` (default speed is 1)
+ * Sets the protocol speed when using serial communication
+ * Speeds:
+ * 0: about 189kbps (Experimental only)
+ * 1: about 137kbps (default)
+ * 2: about 75kbps
+ * 3: about 39kbps
+ * 4: about 26kbps
+ * 5: about 20kbps
+
# The `rules.mk` File
This is a [make](https://www.gnu.org/software/make/manual/make.html) file that is included by the top-level `Makefile`. It is used to set some information about the MCU that we will be compiling for as well as enabling and disabling certain features.
diff --git a/quantum/split_common/serial.c b/quantum/split_common/serial.c
index 4df8d103b..1315377a3 100644
--- a/quantum/split_common/serial.c
+++ b/quantum/split_common/serial.c
@@ -90,7 +90,7 @@
#ifndef SELECT_SOFT_SERIAL_SPEED
#define SELECT_SOFT_SERIAL_SPEED 1
-// 0: about 189kbps (Experiment only)
+// 0: about 189kbps (Experimental only)
// 1: about 137kbps (default)
// 2: about 75kbps
// 3: about 39kbps
diff --git a/quantum/split_common/split_util.c b/quantum/split_common/split_util.c
index e4475c535..da04c8d3f 100644
--- a/quantum/split_common/split_util.c
+++ b/quantum/split_common/split_util.c
@@ -36,8 +36,7 @@ static void setup_handedness(void) {
#ifdef EE_HANDS
isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
#else
- // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
- #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
+ #ifdef(MASTER_RIGHT)
isLeftHand = !has_usb();
#else
isLeftHand = has_usb();