--- /dev/null
+/* Copyright 2018 Jason Williams (Wilba)
+ *
+ * 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 "is31fl3736.h"
+#include <string.h>
+#include "i2c_master.h"
+#include "progmem.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 IS31FL3736 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 IS31FL3736_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 }, { 0 } };
+bool g_led_control_registers_update_required = false;
+
+void IS31FL3736_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 IS31FL3736_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 IS31FL3736_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.
+ IS31FL3736_write_register( addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+
+ // Select PG0
+ IS31FL3736_write_register( addr, ISSI_COMMANDREGISTER, ISSI_PAGE_LEDCONTROL );
+ // Turn off all LEDs.
+ for ( int i = 0x00; i <= 0x17; i++ )
+ {
+ IS31FL3736_write_register( addr, i, 0x00 );
+ }
+
+ // Unlock the command register.
+ IS31FL3736_write_register( addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+
+ // Select PG1
+ IS31FL3736_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++ )
+ {
+ IS31FL3736_write_register( addr, i, 0x00 );
+ }
+
+ // Unlock the command register.
+ IS31FL3736_write_register( addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+
+ // Select PG3
+ IS31FL3736_write_register( addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION );
+ // Set global current to maximum.
+ IS31FL3736_write_register( addr, ISSI_REG_GLOBALCURRENT, 0xFF );
+ // Disable software shutdown.
+ IS31FL3736_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 IS31FL3736_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 IS31FL3736_set_color_all( uint8_t red, uint8_t green, uint8_t blue )
+{
+ for ( int i = 0; i < DRIVER_LED_TOTAL; i++ )
+ {
+ IS31FL3736_set_color( i, red, green, blue );
+ }
+}
+
+void IS31FL3736_set_led_control_register( uint8_t index, bool red, bool green, bool blue )
+{
+ is31_led led = g_is31_leds[index];
+
+ // IS31FL3733
+ // The PWM register for a matrix position (0x00 to 0xBF) can be
+ // divided by 8 to get the LED control register (0x00 to 0x17),
+ // then mod 8 to get the bit position within that register.
+
+ // IS31FL3736
+ // The PWM register for a matrix position (0x00 to 0xBF) is interleaved, so:
+ // A1=0x00 A2=0x02 A3=0x04 A4=0x06 A5=0x08 A6=0x0A A7=0x0C A8=0x0E
+ // B1=0x10 B2=0x12 B3=0x14
+ // But also, the LED control registers (0x00 to 0x17) are also interleaved, so:
+ // A1-A4=0x00 A5-A8=0x01
+ // So, the same math applies.
+
+ 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 IS31FL3736_mono_set_brightness( int index, uint8_t value )
+{
+ if ( index >= 0 && index < 96 ) {
+ // Index in range 0..95 -> A1..A8, B1..B8, etc.
+ // Map index 0..95 to registers 0x00..0xBE (interleaved)
+ uint8_t pwm_register = index * 2;
+ g_pwm_buffer[0][pwm_register] = value;
+ g_pwm_buffer_update_required = true;
+ }
+}
+
+void IS31FL3736_mono_set_brightness_all( uint8_t value )
+{
+ for ( int i = 0; i < 96; i++ )
+ {
+ IS31FL3736_mono_set_brightness( i, value );
+ }
+}
+
+void IS31FL3736_mono_set_led_control_register( uint8_t index, bool enabled )
+{
+ // Index in range 0..95 -> A1..A8, B1..B8, etc.
+
+ // Map index 0..95 to registers 0x00..0xBE (interleaved)
+ uint8_t pwm_register = index * 2;
+ // Map register 0x00..0xBE (interleaved) into control register and bit
+ uint8_t control_register = pwm_register / 8;
+ uint8_t bit = pwm_register % 8;
+
+ if ( enabled ) {
+ g_led_control_registers[0][control_register] |= (1 << bit);
+ } else {
+ g_led_control_registers[0][control_register] &= ~(1 << bit);
+ }
+
+ g_led_control_registers_update_required = true;
+}
+
+void IS31FL3736_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
+ IS31FL3736_write_register( addr1, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+ IS31FL3736_write_register( addr1, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM );
+
+ IS31FL3736_write_pwm_buffer( addr1, g_pwm_buffer[0] );
+ //IS31FL3736_write_pwm_buffer( addr2, g_pwm_buffer[1] );
+ }
+ g_pwm_buffer_update_required = false;
+}
+
+void IS31FL3736_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
+ IS31FL3736_write_register( addr1, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5 );
+ IS31FL3736_write_register( addr1, ISSI_COMMANDREGISTER, ISSI_PAGE_LEDCONTROL );
+ for ( int i=0; i<24; i++ )
+ {
+ IS31FL3736_write_register(addr1, i, g_led_control_registers[0][i] );
+ //IS31FL3736_write_register(addr2, i, g_led_control_registers[1][i] );
+ }
+ }
+}
+
projects / qmk_firmware.git / blobdiff