[Keyboard] Refactor handwired/splittest to support multiple boards (#6373)

* Refactor splittest to support multiple dev boards

* Refactor splittest to support multiple dev boards - revert change to number of RGB led

* Refactor splittest to support multiple dev boards - update docs

* Refactor splittest to support multiple dev boards - correct docs

* Refactor splittest to support multiple dev boards - update teensy master logic

10 files changed, 217 insertions, 61 deletions

diff --git a/keyboards/handwired/splittest/config.h b/keyboards/handwired/splittest/config.h
index a502d12382..56574f7529 100644
--- a/keyboards/handwired/splittest/config.h
+++ b/keyboards/handwired/splittest/config.h
@@ -33,12 +33,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 2
 #define MATRIX_COLS 1
 
-// wiring of each half
-#define MATRIX_ROW_PINS { B3 }
-#define MATRIX_COL_PINS { B6 }
-#define SPLIT_HAND_PIN F6
-#define SOFT_SERIAL_PIN D1
-
 /* define if matrix has ghost */
 //#define MATRIX_HAS_GHOST
 
@@ -51,7 +45,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_RESYNC_ENABLE
 
 /* ws2812 RGB LED */
-#define RGB_DI_PIN D3
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 12
 #define RGBLED_SPLIT { 6, 6 }
diff --git a/keyboards/handwired/splittest/promicro/config.h b/keyboards/handwired/splittest/promicro/config.h
new file mode 100644
index 0000000000..c2a9c6002e
--- /dev/null
+++ b/keyboards/handwired/splittest/promicro/config.h
@@ -0,0 +1,28 @@
+/* Copyright 2019
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "config_common.h"
+
+// wiring of each half
+#define MATRIX_ROW_PINS { B3 }
+#define MATRIX_COL_PINS { B6 }
+#define SPLIT_HAND_PIN F6
+#define SOFT_SERIAL_PIN D1
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN D3
diff --git a/keyboards/handwired/splittest/promicro/readme.md b/keyboards/handwired/splittest/promicro/readme.md
new file mode 100644
index 0000000000..64a6f4c249
--- /dev/null
+++ b/keyboards/handwired/splittest/promicro/readme.md
@@ -0,0 +1,11 @@
+# Pro Micro splittest
+
+To trigger keypress, short together pins *B3* and *B6* (marked on the PCB as *14* and *10*).
+
+## Wiring
+- Add switches to both Pro Micros across B3 and B6 pins
+- Add pull-up resistor to left side between VCC and F6
+- Add pull-down resistors to right side between GND and F6
+- Connect the following pins on both sides together: D0, D1, GND, VCC
+- Add I2C 4.7kOhm resistors between D0 and VCC, and D1 and VCC
+- Wire Di of RGB strip for each half to D3
diff --git a/keyboards/handwired/splittest/promicro/rules.mk b/keyboards/handwired/splittest/promicro/rules.mk
new file mode 100644
index 0000000000..dc6f196237
--- /dev/null
+++ b/keyboards/handwired/splittest/promicro/rules.mk
@@ -0,0 +1,58 @@
+# MCU name
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   atmega32a    bootloadHID
+BOOTLOADER = caterina
+
+
+# If you don't know the bootloader type, then you can specify the
+# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
+#   Teensy halfKay      512
+#   Teensy++ halfKay    1024
+#   Atmel DFU loader    4096
+#   LUFA bootloader     4096
+#   USBaspLoader        2048
+# OPT_DEFS += -DBOOTLOADER_SIZE=4096
diff --git a/keyboards/handwired/splittest/readme.md b/keyboards/handwired/splittest/readme.md
index 3dbff32ed4..33dbc6e805 100644
--- a/keyboards/handwired/splittest/readme.md
+++ b/keyboards/handwired/splittest/readme.md
@@ -4,7 +4,10 @@ Split Tester
 A two-switch tester built using two Pro Micros, mainly intended to test RGB on split keyboards. Seen here: https://www.instagram.com/p/BvCPNzynwrV/
 
 Keyboard Maintainer: [Bakingpy/nooges](https://github.com/nooges)  
-Hardware Supported: Pro Micro   
+Hardware Supported: Pro Micro, Teensy 2.0  
+Hardware Availability: 
+
+**See each individual board for pin infomation**
 
 Make example for this keyboard (after setting up your build environment):
 
@@ -15,12 +18,3 @@ Example of flashing this keyboard:
     make handwired/splittest:default:avrdude
 
 See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
-
-Wiring
-------
-- Add switches to both Pro Micros across B3 and B6 pins
-- Add pull-up resistor to left side between VCC and F6
-- Add pull-down resistors to right side between GND and F6
-- Connect the following pins on both sides together: D0, D1, GND, VCC
-- Add I2C 4.7kOhm resistors between D0 and VCC, and D1 and VCC
-- Wire Di of RGB strip for each half to D2
diff --git a/keyboards/handwired/splittest/rules.mk b/keyboards/handwired/splittest/rules.mk
index 9512c0f648..2aa484db0b 100644
--- a/keyboards/handwired/splittest/rules.mk
+++ b/keyboards/handwired/splittest/rules.mk
@@ -1,47 +1,3 @@
-# MCU name
-MCU = atmega32u4
-
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Bootloader
-#     This definition is optional, and if your keyboard supports multiple bootloaders of
-#     different sizes, comment this out, and the correct address will be loaded
-#     automatically (+60). See bootloader.mk for all options.
-BOOTLOADER = caterina
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
 # Build Options
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
@@ -63,3 +19,5 @@ RGBLIGHT_ENABLE = yes        # Enable WS2812 RGB underlight.
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
 SPLIT_KEYBOARD = yes
+
+DEFAULT_FOLDER = handwired/splittest/promicro
diff --git a/keyboards/handwired/splittest/teensy_2/config.h b/keyboards/handwired/splittest/teensy_2/config.h
new file mode 100644
index 0000000000..3d0b0346ed
--- /dev/null
+++ b/keyboards/handwired/splittest/teensy_2/config.h
@@ -0,0 +1,31 @@
+/* Copyright 2019
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "config_common.h"
+
+// wiring of each half
+#define MATRIX_ROW_PINS { F5 }
+#define MATRIX_COL_PINS { F7 }
+#define SPLIT_HAND_PIN F0
+#define SOFT_SERIAL_PIN D1
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN D3
+
+// required for teensy slave otherwise it "locks up" during startup
+#define NO_USB_STARTUP_CHECK
diff --git a/keyboards/handwired/splittest/teensy_2/readme.md b/keyboards/handwired/splittest/teensy_2/readme.md
new file mode 100644
index 0000000000..ed5f845d20
--- /dev/null
+++ b/keyboards/handwired/splittest/teensy_2/readme.md
@@ -0,0 +1,11 @@
+# Teensy 2.0 splittest
+
+To trigger keypress, short together pins *F5* and *F7*
+
+## Wiring
+- Add switches to both Teensy 2s across F5 and F7 pins
+- Add pull-up resistor to left side between VCC and F0
+- Add pull-down resistors to right side between GND and F0
+- Connect the following pins on both sides together: D0, D1, GND, VCC
+- Add I2C 4.7kOhm resistors between D0 and VCC, and D1 and VCC
+- Wire Di of RGB strip for each half to D3
diff --git a/keyboards/handwired/splittest/teensy_2/rules.mk b/keyboards/handwired/splittest/teensy_2/rules.mk
new file mode 100644
index 0000000000..3fb7c7e5a7
--- /dev/null
+++ b/keyboards/handwired/splittest/teensy_2/rules.mk
@@ -0,0 +1,58 @@
+# MCU name
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   atmega32a    bootloadHID
+BOOTLOADER = halfkay
+
+
+# If you don't know the bootloader type, then you can specify the
+# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
+#   Teensy halfKay      512
+#   Teensy++ halfKay    1024
+#   Atmel DFU loader    4096
+#   LUFA bootloader     4096
+#   USBaspLoader        2048
+# OPT_DEFS += -DBOOTLOADER_SIZE=4096
diff --git a/keyboards/handwired/splittest/teensy_2/teensy_2.c b/keyboards/handwired/splittest/teensy_2/teensy_2.c
new file mode 100644
index 0000000000..bcc2a437bd
--- /dev/null
+++ b/keyboards/handwired/splittest/teensy_2/teensy_2.c
@@ -0,0 +1,14 @@
+#include QMK_KEYBOARD_H
+
+bool is_keyboard_master(void) {
+    // TODO: replace this override once USB host detection is implemented
+    // SPLIT_HAND_PIN Combined with MASTER_LEFT or MASTER_RIGHT, gives a crude
+    // way to force teensy to run as slave/master
+    setPinInput(SPLIT_HAND_PIN);
+
+#if defined(MASTER_RIGHT)
+    return !readPin(SPLIT_HAND_PIN);
+#else
+    return readPin(SPLIT_HAND_PIN);
+#endif
+}