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227 lines
8.1 KiB
227 lines
8.1 KiB
/* Copyright 2017 Jason Williams
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* Copyright 2018 Jack Humbert
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* Copyright 2019 Clueboard
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef __AVR__
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#include <avr/interrupt.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#else
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#include "wait.h"
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include "is31fl3235a.h"
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#include "i2c_master.h"
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#include "progmem.h"
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#include "print.h"
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#define ISSI_REG_CONFIG 0x00 // FIXME: Not on 3235?
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#define ISSI_REG_CONFIG_PICTUREMODE 0x00 // FIXME: Not on 3235?
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//#define ISSI_REG_AUDIOSYNC 0x06 // FIXME: Not on 3235?
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#define ISSI_COMMANDREGISTER 0xFD // FIXME: Not on 3235?
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#define ISSI_BANK_FUNCTIONREG 0x0B // FIXME: Not on 3235?
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#ifndef ISSI_TIMEOUT
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#define ISSI_TIMEOUT 100
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#endif
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#ifndef ISSI_PERSISTENCE
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#define ISSI_PERSISTENCE 0
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#endif
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// Transfer buffer for TWITransmitData()
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uint8_t g_3235a_transfer_buffer[20];
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// These buffers match the IS31FL3235A PWM registers 0x05-0x20.
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// Storing them like this is optimal for I2C transfers to the registers.
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// We could optimize this and take out the unused registers from these
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// buffers and the transfers in IS31FL3235A_write_pwm_buffer() but it's
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// probably not worth the extra complexity.
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uint8_t g_rgb7seg_buffer[IS31FL3235A_COUNT][IS31FL3235A_LED_MAX];
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bool g_rgb7seg_buffer_update_required = false;
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/* There's probably a better way to init this... */
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#if IS31FL3235A_COUNT == 1
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uint8_t g_3235a_control_registers[IS31FL3235A_COUNT][18] = {{0}};
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#elif IS31FL3235A_COUNT == 2
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uint8_t g_3235a_control_registers[IS31FL3235A_COUNT][18] = {{0}, {0}};
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#elif IS31FL3235A_COUNT == 3
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uint8_t g_3235a_control_registers[IS31FL3235A_COUNT][18] = {{0}, {0}, {0}};
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#elif IS31FL3235A_COUNT == 4
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uint8_t g_3235a_control_registers[IS31FL3235A_COUNT][18] = {{0}, {0}, {0}, {0}};
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#endif
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bool g_rgb7seg_control_registers_update_required = false;
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void IS31FL3235A_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
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g_3235a_transfer_buffer[0] = reg;
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g_3235a_transfer_buffer[1] = data;
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xprintf("IS31FL3235A_write_register(0x%x, 0x%x, 0x%x); g_3235a_transfer_buffer:0x%x\n", addr, reg, data, g_3235a_transfer_buffer);
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#if ISSI_PERSISTENCE > 0
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for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
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if (i2c_transmit(addr, g_3235a_transfer_buffer, 2, ISSI_TIMEOUT) == 0) {
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break;
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}
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}
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#else
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if (i2c_transmit(addr, g_3235a_transfer_buffer, 2, ISSI_TIMEOUT) == -1) {
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// When we encounter a timeout ChibiOS says the bus must be reset as it's in an unknown state
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xprintf("i2c transmit timeout, resetting i2c bus!\n");
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i2c_stop(ISSI_TIMEOUT);
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wait_ms(5);
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i2c_start(ISSI_TIMEOUT);
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}
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#endif
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}
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void IS31FL3235A_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
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// assumes bank is already selected
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// transmit PWM registers in 9 transfers of 16 bytes
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// g_3235a_transfer_buffer[] is 20 bytes
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// iterate over the pwm_buffer contents at 16 byte intervals
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for (int i = 0; i < IS31FL3235A_LED_MAX; i += 16) {
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// set the first register, e.g. 0x24, 0x34, 0x44, etc.
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g_3235a_transfer_buffer[0] = 0x24 + i;
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// copy the data from i to i+15
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// device will auto-increment register for data after the first byte
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// thus this sets registers 0x24-0x33, 0x34-0x43, etc. in one transfer
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for (int j = 0; j < 16; j++) {
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g_3235a_transfer_buffer[1 + j] = pwm_buffer[i + j];
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}
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#if ISSI_PERSISTENCE > 0
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for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
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if (i2c_transmit(addr << 1, g_3235a_transfer_buffer, 17, ISSI_TIMEOUT) == 0)
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break;
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}
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#else
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if (i2c_transmit(addr << 1, g_3235a_transfer_buffer, 17, ISSI_TIMEOUT) == -1) {
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// When we encounter a timeout ChibiOS says the bus must be reset as it's in an unknown state
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xprintf("i2c transmit timeout, resetting i2c bus!\n");
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i2c_stop(ISSI_TIMEOUT);
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wait_ms(5);
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i2c_start(ISSI_TIMEOUT);
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}
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#endif
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}
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}
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void IS31FL3235A_init(uint8_t addr) {
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wait_ms(2000); // Give QMK Toolbox time to attach
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xprintf("IS31FS3235A_init(0x%x)\n", addr);
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// In order to avoid the LEDs being driven with garbage data
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// in the LED driver's PWM registers, first enable software shutdown,
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// then set up the mode and other settings, clear the PWM registers,
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// then disable software shutdown.
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// Reset settings to default
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//IS31FL3235A_write_register(addr, ISSI_REG_RESET_REG, 0);
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// this delay was copied from other drivers, might not be needed
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wait_ms(10);
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// This is how the Arduino code does init...
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uint8_t i = 0;
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for (i=0x2A; i<=0x45; i++) {
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IS31FL3235A_write_register(addr, i, 0xFF); // Turn off all LEDs
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}
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for (i=0x05; i<=0x20; i++) {
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IS31FL3235A_write_register(addr, i, 0x00); // Write all PWM set 0x00
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}
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IS31FL3235A_write_register(addr, 0x25, 0x00); //update PWM&Control registers
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IS31FL3235A_write_register(addr, 0x4B, 0x01); //frequency setting 22KHz
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IS31FL3235A_write_register(addr, 0x00, 0x01); //normal operation
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// This is how the Arduino code does LED turn on
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IS31FL3235A_write_register(addr, 0x05, 0xFF); // set PWM
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IS31FL3235A_write_register(addr, 0x25, 0x00); // update PWM&Control registers
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IS31FL3235A_write_register(addr, 0x08, 0xFF); // set PWM
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IS31FL3235A_write_register(addr, 0x25, 0x00); // update PWM&Control registers
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IS31FL3235A_write_register(addr, 0x12, 0xFF); // set PWM
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IS31FL3235A_write_register(addr, 0x25, 0x00); // update PWM&Control registers
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// FIXME: This is for testing, turn on OUT1 at full brightness
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//IS31FL3235A_write_register(addr, 0x2A, 0xFF);
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//IS31FL3235A_write_register(addr, 0x05, 0x00);
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// I think this finally turns it on?
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//IS31FL3235A_write_register(addr, 0x25, 0x00); //update PWM&Control registers
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//IS31FL3235A_write_register(addr, 0x4B, 0x01); //frequency setting 22KHz
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//IS31FL3235A_write_register(addr, 0x00, 0x01); //normal operation
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}
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void IS31FL3235A_set_value(int index, uint8_t value) {
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/*
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if (index >= 0 && index < IS31FL3235A_LED_COUNT) {
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is31_led led = g_is31_leds[index];
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// Subtract 0x24 to get the second index of g_rgb7seg_buffer
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g_rgb7seg_buffer[led.driver][led.v - 0x24] = value;
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g_rgb7seg_buffer_update_required = true;
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}
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*/
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}
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void IS31FL3235A_set_value_all(uint8_t value) {
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for (int i = 0; i < IS31FL3235A_LED_COUNT; i++) {
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IS31FL3235A_set_value(i, value);
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}
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}
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void IS31FL3235A_set_led_control_register(uint8_t index, bool value) {
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/*
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is31_led led = g_is31_leds[index];
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uint8_t control_register = (led.v - 0x24) / 8;
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uint8_t bit_value = (led.v - 0x24) % 8;
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if (value) {
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g_3235a_control_registers[led.driver][control_register] |= (1 << bit_value);
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} else {
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g_3235a_control_registers[led.driver][control_register] &= ~(1 << bit_value);
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}
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g_rgb7seg_control_registers_update_required = true;
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*/
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}
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void IS31FL3235A_update_pwm_buffers(uint8_t addr, uint8_t index) {
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//xprintf("IS31FS3235A_update_pwm_buffers(0x%x, %d)\n", addr, index);
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if (g_rgb7seg_buffer_update_required) {
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IS31FL3235A_write_pwm_buffer(addr, g_rgb7seg_buffer[index]);
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g_rgb7seg_buffer_update_required = false;
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}
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}
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void IS31FL3235A_update_led_control_registers(uint8_t addr, uint8_t index) {
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if (g_rgb7seg_control_registers_update_required) {
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for (int i=0; i<18; i++) {
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IS31FL3235A_write_register(addr, i, g_3235a_control_registers[index][i]);
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}
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}
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}
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