Adds the Planck EZ, 3737 RGB, fixes out-of-tune notes (#5532)

* RGB Matrix overhaul
Breakout of animations to separate files
Integration of optimized int based math lib
Overhaul of rgb_matrix.c and animations for performance

* Updating effect function api for future extensions

* Combined the keypresses || keyreleases define checks into a single define so I stop forgetting it where necessary

* Moving define RGB_MATRIX_KEYREACTIVE_ENABLED earlier in the include chain

* Adds the Planck EZ, 3737 RGB, fixes out-of-tune notes

* fix bug in quantum/rgb_matrix_drivers.c

Co-Authored-By: jackhumbert <jack.humb@gmail.com>

* update command setting to the correct default

* correct rgb config

* remove commented-out lines

* update docs for the 3737

* Update docs/feature_rgb_matrix.md

Co-Authored-By: jackhumbert <jack.humb@gmail.com>

2 files changed, 459 insertions, 0 deletions

diff --git a/drivers/issi/is31fl3737.c b/drivers/issi/is31fl3737.c
new file mode 100644
index 000000000..649104927
--- /dev/null
+++ b/drivers/issi/is31fl3737.c
@@ -0,0 +1,252 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ * Copyright 2018 Yiancar
+ *
+ * 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/>.
+ */
+
+#ifdef __AVR__
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#else
+#include "wait.h"
+#endif
+
+#include <string.h>
+#include "i2c_master.h"
+#include "progmem.h"
+#include "rgb_matrix.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 ISSI_ADDR_DEFAULT 0x50
+
+#define ISSI_COMMANDREGISTER 0xFD
+#define ISSI_COMMANDREGISTER_WRITELOCK 0xFE
+#define ISSI_INTERRUPTMASKREGISTER 0xF0
+#define ISSI_INTERRUPTSTATUSREGISTER 0xF1
+
+#define ISSI_PAGE_LEDCONTROL 0x00 //PG0
+#define ISSI_PAGE_PWM 0x01        //PG1
+#define ISSI_PAGE_AUTOBREATH 0x02 //PG2
+#define ISSI_PAGE_FUNCTION 0x03   //PG3
+
+#define ISSI_REG_CONFIGURATION 0x00 //PG3
+#define ISSI_REG_GLOBALCURRENT 0x01 //PG3
+#define ISSI_REG_RESET 0x11// PG3
+#define ISSI_REG_SWPULLUP 0x0F //PG3
+#define ISSI_REG_CSPULLUP 0x10 //PG3
+
+#ifndef ISSI_TIMEOUT
+  #define ISSI_TIMEOUT 100
+#endif
+
+#ifndef ISSI_PERSISTENCE
+  #define ISSI_PERSISTENCE 0
+#endif
+
+// Transfer buffer for TWITransmitData()
+uint8_t g_twi_transfer_buffer[20];
+
+// These buffers match the IS31FL3737 PWM registers.
+// The control buffers match the PG0 LED On/Off registers.
+// Storing them like this is optimal for I2C transfers to the registers.
+// We could optimize this and take out the unused registers from these
+// buffers and the transfers in IS31FL3737_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+uint8_t g_pwm_buffer[DRIVER_COUNT][192];
+bool g_pwm_buffer_update_required = false;
+
+uint8_t g_led_control_registers[DRIVER_COUNT][24] = { { 0 } };
+bool g_led_control_registers_update_required = false;
+
+void IS31FL3737_write_register( uint8_t addr, uint8_t reg, uint8_t data )
+{
+    g_twi_transfer_buffer[0] = reg;
+    g_twi_transfer_buffer[1] = data;
+
+  #if ISSI_PERSISTENCE > 0
+    for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+      if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) == 0)
+        break;
+    }
+  #else
+    i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
+  #endif
+}
+
+void IS31FL3737_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
+{
+    // assumes PG1 is already selected
+
+    // transmit PWM registers in 12 transfers of 16 bytes
+    // g_twi_transfer_buffer[] is 20 bytes
+
+    // iterate over the pwm_buffer contents at 16 byte intervals
+    for ( int i = 0; i < 192; i += 16 ) {
+        g_twi_transfer_buffer[0] = i;
+        // copy the data from i to i+15
+        // device will auto-increment register for data after the first byte
+        // thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer
+        for ( int j = 0; j < 16; j++ ) {
+            g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j];
+        }
+
+    #if ISSI_PERSISTENCE > 0
+      for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+        if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) == 0)
+          break;
+      }
+    #else
+      i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT);
+    #endif
+    }
+}
+
+void IS31FL3737_init( uint8_t addr )
+{
+    // In order to avoid the LEDs being driven with garbage data
+    // in the LED driver's PWM registers, shutdown is enabled last.
+    // Set up the mode and other settings, clear the PWM registers,
+    // then disable software shutdown.
+
+    // Unlock the command register.
+    IS31FL3737_write_register( addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+
+    // Select PG0
+    IS31FL3737_write_register( addr, ISSI_COMMANDREGISTER, ISSI_PAGE_LEDCONTROL );
+    // Turn off all LEDs.
+    for ( int i = 0x00; i <= 0x17; i++ )
+    {
+        IS31FL3737_write_register( addr, i, 0x00 );
+    }
+
+    // Unlock the command register.
+    IS31FL3737_write_register( addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+
+    // Select PG1
+    IS31FL3737_write_register( addr, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM );
+    // Set PWM on all LEDs to 0
+    // No need to setup Breath registers to PWM as that is the default.
+    for ( int i = 0x00; i <= 0xBF; i++ )
+    {
+        IS31FL3737_write_register( addr, i, 0x00 );
+    }
+
+    // Unlock the command register.
+    IS31FL3737_write_register( addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+
+    // Select PG3
+    IS31FL3737_write_register( addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION );
+    // Set global current to maximum.
+    IS31FL3737_write_register( addr, ISSI_REG_GLOBALCURRENT, 0xFF );
+    // Disable software shutdown.
+    IS31FL3737_write_register( addr, ISSI_REG_CONFIGURATION, 0x01 );
+
+    // Wait 10ms to ensure the device has woken up.
+    #ifdef __AVR__
+    _delay_ms( 10 );
+    #else
+    wait_ms(10);
+    #endif
+}
+
+void IS31FL3737_set_color( int index, uint8_t red, uint8_t green, uint8_t blue )
+{
+    if ( index >= 0 && index < DRIVER_LED_TOTAL ) {
+        is31_led led = g_is31_leds[index];
+
+        g_pwm_buffer[led.driver][led.r] = red;
+        g_pwm_buffer[led.driver][led.g] = green;
+        g_pwm_buffer[led.driver][led.b] = blue;
+        g_pwm_buffer_update_required = true;
+    }
+}
+
+void IS31FL3737_set_color_all( uint8_t red, uint8_t green, uint8_t blue )
+{
+    for ( int i = 0; i < DRIVER_LED_TOTAL; i++ )
+    {
+        IS31FL3737_set_color( i, red, green, blue );
+    }
+}
+
+void IS31FL3737_set_led_control_register( uint8_t index, bool red, bool green, bool blue )
+{
+    is31_led led = g_is31_leds[index];
+
+  uint8_t control_register_r = led.r / 8;
+  uint8_t control_register_g = led.g / 8;
+  uint8_t control_register_b = led.b / 8;
+  uint8_t bit_r = led.r % 8;
+  uint8_t bit_g = led.g % 8;
+  uint8_t bit_b = led.b % 8;
+
+    if ( red ) {
+        g_led_control_registers[led.driver][control_register_r] |= (1 << bit_r);
+    } else {
+        g_led_control_registers[led.driver][control_register_r] &= ~(1 << bit_r);
+    }
+    if ( green ) {
+        g_led_control_registers[led.driver][control_register_g] |= (1 << bit_g);
+    } else {
+        g_led_control_registers[led.driver][control_register_g] &= ~(1 << bit_g);
+    }
+    if ( blue ) {
+        g_led_control_registers[led.driver][control_register_b] |= (1 << bit_b);
+    } else {
+        g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
+    }
+
+    g_led_control_registers_update_required = true;
+
+}
+
+void IS31FL3737_update_pwm_buffers( uint8_t addr1, uint8_t addr2 )
+{
+    if ( g_pwm_buffer_update_required )
+    {
+        // Firstly we need to unlock the command register and select PG1
+        IS31FL3737_write_register( addr1, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+        IS31FL3737_write_register( addr1, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM );
+
+        IS31FL3737_write_pwm_buffer( addr1, g_pwm_buffer[0] );
+        //IS31FL3737_write_pwm_buffer( addr2, g_pwm_buffer[1] );
+    }
+    g_pwm_buffer_update_required = false;
+}
+
+void IS31FL3737_update_led_control_registers( uint8_t addr1, uint8_t addr2 )
+{
+    if ( g_led_control_registers_update_required )
+    {
+        // Firstly we need to unlock the command register and select PG0
+        IS31FL3737_write_register( addr1, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+        IS31FL3737_write_register( addr1, ISSI_COMMANDREGISTER, ISSI_PAGE_LEDCONTROL );
+        for ( int i=0; i<24; i++ )
+        {
+            IS31FL3737_write_register(addr1, i, g_led_control_registers[0][i] );
+            //IS31FL3737_write_register(addr2, i, g_led_control_registers[1][i] );
+        }
+    }
+}
diff --git a/drivers/issi/is31fl3737.h b/drivers/issi/is31fl3737.h
new file mode 100644
index 000000000..69c4b9b53
--- /dev/null
+++ b/drivers/issi/is31fl3737.h
@@ -0,0 +1,207 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ * Copyright 2018 Yiancar
+ *
+ * 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/>.
+ */
+
+
+#ifndef IS31FL3737_DRIVER_H
+#define IS31FL3737_DRIVER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct is31_led {
+  uint8_t driver:2;
+  uint8_t r;
+  uint8_t g;
+  uint8_t b;
+} __attribute__((packed)) is31_led;
+
+extern const is31_led g_is31_leds[DRIVER_LED_TOTAL];
+
+void IS31FL3737_init( uint8_t addr );
+void IS31FL3737_write_register( uint8_t addr, uint8_t reg, uint8_t data );
+void IS31FL3737_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer );
+
+void IS31FL3737_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
+void IS31FL3737_set_color_all( uint8_t red, uint8_t green, uint8_t blue );
+
+void IS31FL3737_set_led_control_register( uint8_t index, bool red, bool green, bool blue );
+
+// This should not be called from an interrupt
+// (eg. from a timer interrupt).
+// Call this while idle (in between matrix scans).
+// If the buffer is dirty, it will update the driver with the buffer.
+void IS31FL3737_update_pwm_buffers( uint8_t addr1, uint8_t addr2 );
+void IS31FL3737_update_led_control_registers( uint8_t addr1, uint8_t addr2 );
+
+#define A_1   0x00
+#define A_2   0x01
+#define A_3   0x02
+#define A_4   0x03
+#define A_5   0x04
+#define A_6   0x05
+#define A_7   0x08
+#define A_8   0x09
+#define A_9   0x0A
+#define A_10  0x0B
+#define A_11  0x0C
+#define A_12  0x0D
+
+#define B_1   0x10
+#define B_2   0x11
+#define B_3   0x12
+#define B_4   0x13
+#define B_5   0x14
+#define B_6   0x15
+#define B_7   0x18
+#define B_8   0x19
+#define B_9   0x1A
+#define B_10  0x1B
+#define B_11  0x1C
+#define B_12  0x1D
+
+#define C_1   0x20
+#define C_2   0x21
+#define C_3   0x22
+#define C_4   0x23
+#define C_5   0x24
+#define C_6   0x25
+#define C_7   0x28
+#define C_8   0x29
+#define C_9   0x2A
+#define C_10  0x2B
+#define C_11  0x2C
+#define C_12  0x2D
+
+#define D_1   0x30
+#define D_2   0x31
+#define D_3   0x32
+#define D_4   0x33
+#define D_5   0x34
+#define D_6   0x35
+#define D_7   0x38
+#define D_8   0x39
+#define D_9   0x3A
+#define D_10  0x3B
+#define D_11  0x3C
+#define D_12  0x3D
+
+#define E_1   0x40
+#define E_2   0x41
+#define E_3   0x42
+#define E_4   0x43
+#define E_5   0x44
+#define E_6   0x45
+#define E_7   0x48
+#define E_8   0x49
+#define E_9   0x4A
+#define E_10  0x4B
+#define E_11  0x4C
+#define E_12  0x4D
+
+#define F_1   0x50
+#define F_2   0x51
+#define F_3   0x52
+#define F_4   0x53
+#define F_5   0x54
+#define F_6   0x55
+#define F_7   0x58
+#define F_8   0x59
+#define F_9   0x5A
+#define F_10  0x5B
+#define F_11  0x5C
+#define F_12  0x5D
+
+#define G_1   0x60
+#define G_2   0x61
+#define G_3   0x62
+#define G_4   0x63
+#define G_5   0x64
+#define G_6   0x65
+#define G_7   0x68
+#define G_8   0x69
+#define G_9   0x6A
+#define G_10  0x6B
+#define G_11  0x6C
+#define G_12  0x6D
+
+#define H_1   0x70
+#define H_2   0x71
+#define H_3   0x72
+#define H_4   0x73
+#define H_5   0x74
+#define H_6   0x75
+#define H_7   0x78
+#define H_8   0x79
+#define H_9   0x7A
+#define H_10  0x7B
+#define H_11  0x7C
+#define H_12  0x7D
+
+#define I_1   0x80
+#define I_2   0x81
+#define I_3   0x82
+#define I_4   0x83
+#define I_5   0x84
+#define I_6   0x85
+#define I_7   0x88
+#define I_8   0x89
+#define I_9   0x8A
+#define I_10  0x8B
+#define I_11  0x8C
+#define I_12  0x8D
+
+#define J_1   0x90
+#define J_2   0x91
+#define J_3   0x92
+#define J_4   0x93
+#define J_5   0x94
+#define J_6   0x95
+#define J_7   0x98
+#define J_8   0x99
+#define J_9   0x9A
+#define J_10  0x9B
+#define J_11  0x9C
+#define J_12  0x9D
+
+#define K_1   0xA0
+#define K_2   0xA1
+#define K_3   0xA2
+#define K_4   0xA3
+#define K_5   0xA4
+#define K_6   0xA5
+#define K_7   0xA8
+#define K_8   0xA9
+#define K_9   0xAA
+#define K_10  0xAB
+#define K_11  0xAC
+#define K_12  0xAD
+
+#define L_1   0xB0
+#define L_2   0xB1
+#define L_3   0xB2
+#define L_4   0xB3
+#define L_5   0xB4
+#define L_6   0xB5
+#define L_7   0xB8
+#define L_8   0xB9
+#define L_9   0xBA
+#define L_10  0xBB
+#define L_11  0xBC
+#define L_12  0xBD
+
+#endif // IS31FL3737_DRIVER_H