Add documentation for led matrix

3 files changed, 51 insertions, 170 deletions

diff --git a/docs/feature_led_matrix.md b/docs/feature_led_matrix.md
index 5a62cc530..372407b90 100644
--- a/docs/feature_led_matrix.md
+++ b/docs/feature_led_matrix.md
@@ -1,14 +1,31 @@
-# RGB Matrix Lighting
+# LED Matrix Lighting
+
+This feature allows you to use LED matrices driven by external drivers. It hooks into the backlight system so you can use the same keycodes as backlighting to control it.
+
+If you want to use RGB LED's you should use the [RGB Matrix Subsystem](feature_rgb_matrix.md) instead.
 
 ## Driver configuration
 
 ### IS31FL3731
 
-There is basic support for addressable RGB matrix lighting with the I2C IS31FL3731 RGB controller. To enable it, add this to your `rules.mk`:
+There is basic support for addressable LED matrix lighting with the I2C IS31FL3731 RGB controller. To enable it, add this to your `rules.mk`:
 
     LED_MATRIX_ENABLE = IS31FL3731
+    
+You can use between 1 and 4 IS31FL3731 IC's. Do not specify `LED_DRIVER_ADDR_<N>` defines for IC's that are not present on your keyboard. You can define the following items in `config.h`:
 
-Configure the hardware via your `config.h`:
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `ISSI_TIMEOUT` | (Optional) How long to wait for i2c messages | 100 |
+| `ISSI_PERSISTENCE` | (Optional) Retry failed messages this many times | 0 |
+| `LED_DRIVER_COUNT` | (Required) How many LED driver IC's are present | |
+| `LED_DRIVER_LED_COUNT` | (Required) How many LED lights are present across all drivers | |
+| `LED_DRIVER_ADDR_1` | (Required) Address for the first LED driver | |
+| `LED_DRIVER_ADDR_2` | (Optional) Address for the second LED driver | |
+| `LED_DRIVER_ADDR_3` | (Optional) Address for the third LED driver | |
+| `LED_DRIVER_ADDR_4` | (Optional) Address for the fourth LED driver | |
+
+Here is an example using 2 drivers.
 
         // This is a 7-bit address, that gets left-shifted and bit 0
         // set to 0 for write, 1 for read (as per I2C protocol)
@@ -21,9 +38,9 @@ Configure the hardware via your `config.h`:
         #define LED_DRIVER_ADDR_2 0b1110110
 
         #define LED_DRIVER_COUNT 2
-        #define LED_DRIVER_1_LED_TOTAL 25
-        #define LED_DRIVER_2_LED_TOTAL 24
-        #define LED_DRIVER_LED_TOTAL LED_DRIVER_1_LED_TOTAL + LED_DRIVER_2_LED_TOTAL
+        #define LED_DRIVER_1_LED_COUNT 25
+        #define LED_DRIVER_2_LED_COUNT 24
+        #define LED_DRIVER_LED_COUNT LED_DRIVER_1_LED_TOTAL + LED_DRIVER_2_LED_TOTAL
 
 Currently only 2 drivers are supported, but it would be trivial to support all 4 combinations.
 
@@ -32,175 +49,31 @@ Define these arrays listing all the LEDs in your `<keyboard>.c`:
         const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
         /* Refer to IS31 manual for these locations
          *   driver
-         *   |  R location
-         *   |  |      G location
-         *   |  |      |      B location
-         *   |  |      |      | */
-            {0, C1_3,  C2_3,  C3_3},
+         *   |  LED address
+         *   |  | */
+            {0, C3_3},
             ....
         }
 
-Where `Cx_y` is the location of the LED in the matrix defined by [the datasheet](http://www.issi.com/WW/pdf/31FL3731.pdf) and the header file `drivers/issi/is31fl3731.h`. The `driver` is the index of the driver you defined in your `config.h` (`0` or `1` right now).
-
-###  IS31FL3733
-
-There is basic support for addressable RGB matrix lighting with the I2C IS31FL3733 RGB controller. To enable it, add this to your `rules.mk`:
-
-    RGB_MATRIX_ENABLE = IS31FL3733
-
-Configure the hardware via your `config.h`:
-
-        // This is a 7-bit address, that gets left-shifted and bit 0
-        // set to 0 for write, 1 for read (as per I2C protocol)
-        // The address will vary depending on your wiring:
-        // 00 <-> GND
-        // 01 <-> SCL
-        // 10 <-> SDA
-        // 11 <-> VCC
-        // ADDR1 represents A1:A0 of the 7-bit address.
-        // ADDR2 represents A3:A2 of the 7-bit address.
-        // The result is: 0b101(ADDR2)(ADDR1)
-        #define DRIVER_ADDR_1 0b1010000
-        #define DRIVER_ADDR_2 0b1010000 // this is here for compliancy reasons.
-
-        #define DRIVER_COUNT 1
-        #define DRIVER_1_LED_TOTAL 64
-        #define DRIVER_LED_TOTAL DRIVER_1_LED_TOTAL
-
-Currently only a single drivers is supported, but it would be trivial to support all 4 combinations. For now define `DRIVER_ADDR_2` as `DRIVER_ADDR_1`
-
-Define these arrays listing all the LEDs in your `<keyboard>.c`:
-
-        const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
-        /* Refer to IS31 manual for these locations
-         *   driver
-         *   |  R location
-         *   |  |       G location
-         *   |  |       |       B location
-         *   |  |       |       | */
-            {0, B_1,    A_1,    C_1},
-            ....
-        }
-
-Where `X_Y` is the location of the LED in the matrix defined by [the datasheet](http://www.issi.com/WW/pdf/31FL3733.pdf) and the header file `drivers/issi/is31fl3733.h`. The `driver` is the index of the driver you defined in your `config.h` (Only `0` right now).
-
-From this point forward the configuration is the same for all the drivers. 
-
-        const rgb_led g_rgb_leds[DRIVER_LED_TOTAL] = {
-        /* {row | col << 4}
-         *    |           {x=0..224, y=0..64}
-         *    |              |               modifier
-         *    |              |                 | */
-            {{0|(0<<4)},   {20.36*0, 21.33*0}, 1},
-            {{0|(1<<4)},   {20.36*1, 21.33*0}, 1},
-            ....
-        }
-
-The format for the matrix position used in this array is `{row | (col << 4)}`. The `x` is between (inclusive) 0-224, and `y` is between (inclusive) 0-64. The easiest way to calculate these positions is:
-
-    x = 224 / ( NUMBER_OF_ROWS - 1 ) * ROW_POSITION
-    y = 64 / (NUMBER_OF_COLS - 1 ) * COL_POSITION
-
-Where all variables are decimels/floats.
-
-`modifier` is a boolean, whether or not a certain key is considered a modifier (used in some effects).
+Where `Cx_y` is the location of the LED in the matrix defined by [the datasheet](http://www.issi.com/WW/pdf/31FL3731.pdf) and the header file `drivers/issi/is31fl3731-simple.h`. The `driver` is the index of the driver you defined in your `config.h` (`0`, `1`, `2`, or `3` ).
 
 ## Keycodes
 
-All RGB keycodes are currently shared with the RGBLIGHT system:
-
-        * `RGB_TOG` - toggle
-        * `RGB_MOD` - cycle through modes
-        * `RGB_HUI` - increase hue
-        * `RGB_HUD` - decrease hue
-        * `RGB_SAI` - increase saturation
-        * `RGB_SAD` - decrease saturation
-        * `RGB_VAI` - increase value
-        * `RGB_VAD` - decrease value
-        * `RGB_SPI` - increase speed effect (no EEPROM support)
-        * `RGB_SPD` - decrease speed effect (no EEPROM support)
-
-
-        * `RGB_MODE_*` keycodes will generally work, but are not currently mapped to the correct effects for the RGB Matrix system
-
-## RGB Matrix Effects
-
-These are the effects that are currently available:
-
-        enum rgb_matrix_effects {
-            RGB_MATRIX_SOLID_COLOR = 1,
-            RGB_MATRIX_ALPHAS_MODS,
-            RGB_MATRIX_DUAL_BEACON,
-            RGB_MATRIX_GRADIENT_UP_DOWN,
-            RGB_MATRIX_RAINDROPS,
-            RGB_MATRIX_CYCLE_ALL,
-            RGB_MATRIX_CYCLE_LEFT_RIGHT,
-            RGB_MATRIX_CYCLE_UP_DOWN,
-            RGB_MATRIX_RAINBOW_BEACON,
-            RGB_MATRIX_RAINBOW_PINWHEELS,
-            RGB_MATRIX_RAINBOW_MOVING_CHEVRON,
-            RGB_MATRIX_JELLYBEAN_RAINDROPS,
-            RGB_MATRIX_DIGITAL_RAIN,
-        #ifdef RGB_MATRIX_KEYPRESSES
-            RGB_MATRIX_SOLID_REACTIVE,
-            RGB_MATRIX_SPLASH,
-            RGB_MATRIX_MULTISPLASH,
-            RGB_MATRIX_SOLID_SPLASH,
-            RGB_MATRIX_SOLID_MULTISPLASH,
-        #endif
-            RGB_MATRIX_EFFECT_MAX
-        };
-    
-You can disable a single effect by defining `DISABLE_[EFFECT_NAME]` in your `config.h`:
-
-
-|Define                                             |Description                                 |
-|---------------------------------------------------|--------------------------------------------|
-|`#define DISABLE_RGB_MATRIX_ALPHAS_MODS`           |Disables `RGB_MATRIX_ALPHAS_MODS`           |
-|`#define DISABLE_RGB_MATRIX_DUAL_BEACON`           |Disables `RGB_MATRIX_DUAL_BEACON`           |
-|`#define DISABLE_RGB_MATRIX_GRADIENT_UP_DOWN`      |Disables `RGB_MATRIX_GRADIENT_UP_DOWN`      |
-|`#define DISABLE_RGB_MATRIX_RAINDROPS`             |Disables `RGB_MATRIX_RAINDROPS`             |
-|`#define DISABLE_RGB_MATRIX_CYCLE_ALL`             |Disables `RGB_MATRIX_CYCLE_ALL`             |
-|`#define DISABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT`      |Disables `RGB_MATRIX_CYCLE_LEFT_RIGHT`      |
-|`#define DISABLE_RGB_MATRIX_CYCLE_UP_DOWN`         |Disables `RGB_MATRIX_CYCLE_UP_DOWN`         |
-|`#define DISABLE_RGB_MATRIX_RAINBOW_BEACON`        |Disables `RGB_MATRIX_RAINBOW_BEACON`        |
-|`#define DISABLE_RGB_MATRIX_RAINBOW_PINWHEELS`     |Disables `RGB_MATRIX_RAINBOW_PINWHEELS`     |
-|`#define DISABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON`|Disables `RGB_MATRIX_RAINBOW_MOVING_CHEVRON`|
-|`#define DISABLE_RGB_MATRIX_JELLYBEAN_RAINDROPS`   |Disables `RGB_MATRIX_JELLYBEAN_RAINDROPS`   |
-|`#define DISABLE_RGB_MATRIX_DIGITAL_RAIN`          |Disables `RGB_MATRIX_DIGITAL_RAIN`          |
-|`#define DISABLE_RGB_MATRIX_SOLID_REACTIVE`        |Disables `RGB_MATRIX_SOLID_REACTIVE`        |
-|`#define DISABLE_RGB_MATRIX_SPLASH`                |Disables `RGB_MATRIX_SPLASH`                |
-|`#define DISABLE_RGB_MATRIX_MULTISPLASH`           |Disables `RGB_MATRIX_MULTISPLASH`           |
-|`#define DISABLE_RGB_MATRIX_SOLID_SPLASH`          |Disables `RGB_MATRIX_SOLID_SPLASH`          |
-|`#define DISABLE_RGB_MATRIX_SOLID_MULTISPLASH`     |Disables `RGB_MATRIX_SOLID_MULTISPLASH`     |
+All LED matrix keycodes are currently shared with the [backlight system](feature_backlight.md).
+
+## LED Matrix Effects
 
+Currently no LED matrix effects have been created.
 
 ## Custom layer effects
 
 Custom layer effects can be done by defining this in your `<keyboard>.c`:
 
-    void rgb_matrix_indicators_kb(void) {
-        rgb_matrix_set_color(index, red, green, blue);
+    void led_matrix_indicators_kb(void) {
+        led_matrix_set_index_value(index, value);
     }
 
-A similar function works in the keymap as `rgb_matrix_indicators_user`.
-
-## Additional `config.h` Options
-
-        #define RGB_MATRIX_KEYPRESSES // reacts to keypresses (will slow down matrix scan by a lot)
-        #define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (not recommened)
-        #define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
-        #define RGB_DISABLE_WHEN_USB_SUSPENDED false // turn off effects when suspended
-    #define RGB_MATRIX_SKIP_FRAMES 1 // number of frames to skip when displaying animations (0 is full effect) if not defined defaults to 1
-    #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 200 // limits maximum brightness of LEDs to 200 out of 255. If not defined maximum brightness is set to 255
-
-## EEPROM storage
-
-The EEPROM for it is currently shared with the RGBLIGHT system (it's generally assumed only one RGB would be used at a time), but could be configured to use its own 32bit address with:
-
-    #define EECONFIG_RGB_MATRIX (uint32_t *)16
-
-Where `16` is an unused index from `eeconfig.h`.
+A similar function works in the keymap as `led_matrix_indicators_user`.
 
 ## Suspended state
 
@@ -208,10 +81,10 @@ To use the suspend feature, add this to your `<keyboard>.c`:
 
         void suspend_power_down_kb(void)
         {
-            rgb_matrix_set_suspend_state(true);
+            led_matrix_set_suspend_state(true);
         }
 
         void suspend_wakeup_init_kb(void)
         {
-            rgb_matrix_set_suspend_state(false);
+            led_matrix_set_suspend_state(false);
         }
diff --git a/docs/feature_rgb_matrix.md b/docs/feature_rgb_matrix.md
index 0af1e4947..e955eb26f 100644
--- a/docs/feature_rgb_matrix.md
+++ b/docs/feature_rgb_matrix.md
@@ -1,5 +1,9 @@
 # RGB Matrix Lighting
 
+This feature allows you to use RGB LED matrices driven by external drivers. It hooks into the RGBLIGHT system so you can use the same keycodes as RGBLIGHT to control it.
+
+If you want to use single color LED's you should use the [LED Matrix Subsystem](feature_led_matrix.md) instead.
+
 ## Driver configuration
 
 ### IS31FL3731
diff --git a/docs/i2c_driver.md b/docs/i2c_driver.md
index ea24dc64f..18546fc62 100644
--- a/docs/i2c_driver.md
+++ b/docs/i2c_driver.md
@@ -33,8 +33,8 @@ The following defines can be used to configure the I2C master driver.
 
 |Variable          |Description                                        |Default|
 |------------------|---------------------------------------------------|-------|
-|`#F_SCL`          |Clock frequency in Hz                              |400KHz |
-|`#Prescaler`      |Divides master clock to aid in I2C clock selection |1      |
+|`F_SCL`           |Clock frequency in Hz                              |400KHz |
+|`Prescaler`       |Divides master clock to aid in I2C clock selection |1      |
 
 AVRs usually have set GPIO which turn into I2C pins, therefore no further configuration is required.
 
@@ -63,20 +63,24 @@ Lastly, we need to assign the correct GPIO pins depending on the I2C hardware dr
 
 By default the I2C1 hardware driver is assumed to be used. If another hardware driver is used,  `#define I2C_DRIVER I2CDX` should be added to the `config.h` file with X being the number of hardware driver used. For example is I2C3 is enabled, the `config.h` file should contain `#define I2C_DRIVER I2CD3`. This aligns the QMK I2C driver with the Chibios I2C driver.
 
-STM32 MCUs allows a variety of pins to be configured as I2C pins depending on the hardware driver used. By default B6 and B7 are set to I2C.
+STM32 MCUs allows a variety of pins to be configured as I2C pins depending on the hardware driver used. By default B6 and B7 are set to I2C. You can use these defines to set your i2c pins:
 
-This can be changed by declaring the `i2c_init` function which intentionally has a weak attribute. Please consult the datasheet of your MCU for the available GPIO configurations. The following is an example initialization function:
+| Variable    | Description                                  | Default |
+|-------------|----------------------------------------------|---------|
+| `I2C1_BANK` | The bank of pins (`GPIOA`, `GPIOB`, `GPIOC`) | `GPIOB` |
+| `I2C1_SCL`  | The pin number for the SCL pin (0-9)         | `6`     |
+| `I2C1_SDA`  | The pin number for the SDA pin (0-9)         | `7`     |
+
+You can also overload the `void i2c_init(void)` function, which has a weak attribute. If you do this the configuration variables above will not be used. Please consult the datasheet of your MCU for the available GPIO configurations. The following is an example initialization function:
 
 ```C
 void i2c_init(void)
 {
   setPinInput(B6); // Try releasing special pins for a short time
   setPinInput(B7);
-  chThdSleepMilliseconds(10); // Wait for the release to happen
+  wait_ms(10); // Wait for the release to happen
 
   palSetPadMode(GPIOB, 6, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP); // Set B6 to I2C function
   palSetPadMode(GPIOB, 7, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP); // Set B7 to I2C function
 }
 ```
-
-