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is31fl3218: Add LED Matrix support (#22126)
Co-authored-by: Joel Challis <git@zvecr.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| /* 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/>. | ||
| */ | ||
| #include "is31fl3218.h" | ||
| #include <string.h> | ||
| #include "i2c_master.h" | ||
|
|
||
| // These are the register addresses | ||
| #define IS31FL3218_REG_SHUTDOWN 0x00 | ||
| #define IS31FL3218_REG_PWM 0x01 | ||
| #define IS31FL3218_REG_CONTROL 0x13 | ||
| #define IS31FL3218_REG_UPDATE 0x16 | ||
| #define IS31FL3218_REG_RESET 0x17 | ||
|
|
||
| #ifndef IS31FL3218_I2C_TIMEOUT | ||
| # define IS31FL3218_I2C_TIMEOUT 100 | ||
| #endif | ||
|
|
||
| #ifndef IS31FL3218_I2C_PERSISTENCE | ||
| # define IS31FL3218_I2C_PERSISTENCE 0 | ||
| #endif | ||
|
|
||
| // Reusable buffer for transfers | ||
| uint8_t g_twi_transfer_buffer[20]; | ||
|
|
||
| // IS31FL3218 has 18 PWM outputs and a fixed I2C address, so no chaining. | ||
| uint8_t g_pwm_buffer[18]; | ||
| bool g_pwm_buffer_update_required = false; | ||
|
|
||
| uint8_t g_led_control_registers[3] = {0}; | ||
| bool g_led_control_registers_update_required = false; | ||
|
|
||
| void is31fl3218_write_register(uint8_t reg, uint8_t data) { | ||
| g_twi_transfer_buffer[0] = reg; | ||
| g_twi_transfer_buffer[1] = data; | ||
| #if IS31FL3218_I2C_PERSISTENCE > 0 | ||
| for (uint8_t i = 0; i < IS31FL3218_I2C_PERSISTENCE; i++) { | ||
| if (i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT) == 0) break; | ||
| } | ||
| #else | ||
| i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT); | ||
| #endif | ||
| } | ||
|
|
||
| void is31fl3218_write_pwm_buffer(uint8_t *pwm_buffer) { | ||
| g_twi_transfer_buffer[0] = IS31FL3218_REG_PWM; | ||
| memcpy(g_twi_transfer_buffer + 1, pwm_buffer, 18); | ||
|
|
||
| #if IS31FL3218_I2C_PERSISTENCE > 0 | ||
| for (uint8_t i = 0; i < IS31FL3218_I2C_PERSISTENCE; i++) { | ||
| i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT); | ||
| } | ||
| #else | ||
| i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT); | ||
| #endif | ||
| } | ||
|
|
||
| void is31fl3218_init(void) { | ||
| // In case we ever want to reinitialize (?) | ||
| is31fl3218_write_register(IS31FL3218_REG_RESET, 0x00); | ||
|
|
||
| // Turn off software shutdown | ||
| is31fl3218_write_register(IS31FL3218_REG_SHUTDOWN, 0x01); | ||
|
|
||
| // Set all PWM values to zero | ||
| for (uint8_t i = 0; i < 18; i++) { | ||
| is31fl3218_write_register(IS31FL3218_REG_PWM + i, 0x00); | ||
| } | ||
|
|
||
| // turn off all LEDs in the LED control register | ||
| for (uint8_t i = 0; i < 3; i++) { | ||
| is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, 0x00); | ||
| } | ||
|
|
||
| // Load PWM registers and LED Control register data | ||
| is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01); | ||
| } | ||
|
|
||
| void is31fl3218_set_value(int index, uint8_t value) { | ||
| is31fl3218_led_t led; | ||
| if (index >= 0 && index < LED_MATRIX_LED_COUNT) { | ||
| memcpy_P(&led, (&g_is31fl3218_leds[index]), sizeof(led)); | ||
| } | ||
| if (g_pwm_buffer[led.v - IS31FL3218_REG_PWM] == value) { | ||
| return; | ||
| } | ||
| g_pwm_buffer[led.v - IS31FL3218_REG_PWM] = value; | ||
| g_pwm_buffer_update_required = true; | ||
| } | ||
|
|
||
| void is31fl3218_set_value_all(uint8_t value) { | ||
| for (int i = 0; i < LED_MATRIX_LED_COUNT; i++) { | ||
| is31fl3218_set_value(i, value); | ||
| } | ||
| } | ||
|
|
||
| void is31fl3218_set_led_control_register(uint8_t index, bool value) { | ||
| is31fl3218_led_t led; | ||
| memcpy_P(&led, (&g_is31fl3218_leds[index]), sizeof(led)); | ||
|
|
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| uint8_t control_register = (led.v - IS31FL3218_REG_PWM) / 6; | ||
| uint8_t bit_value = (led.v - IS31FL3218_REG_PWM) % 6; | ||
|
|
||
| if (value) { | ||
| g_led_control_registers[control_register] |= (1 << bit_value); | ||
| } else { | ||
| g_led_control_registers[control_register] &= ~(1 << bit_value); | ||
| } | ||
|
|
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| g_led_control_registers_update_required = true; | ||
| } | ||
|
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| void is31fl3218_update_pwm_buffers(void) { | ||
| if (g_pwm_buffer_update_required) { | ||
| is31fl3218_write_pwm_buffer(g_pwm_buffer); | ||
| // Load PWM registers and LED Control register data | ||
| is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01); | ||
|
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| g_pwm_buffer_update_required = false; | ||
| } | ||
| } | ||
|
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| void is31fl3218_update_led_control_registers(void) { | ||
| if (g_led_control_registers_update_required) { | ||
| for (int i = 0; i < 3; i++) { | ||
| is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, g_led_control_registers[i]); | ||
| } | ||
|
|
||
| g_led_control_registers_update_required = false; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* 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/>. | ||
| */ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <stdint.h> | ||
| #include <stdbool.h> | ||
| #include "progmem.h" | ||
|
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| #define IS31FL3218_I2C_ADDRESS 0x54 | ||
|
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| typedef struct is31fl3218_led_t { | ||
| uint8_t v; | ||
| } __attribute__((packed)) is31fl3218_led_t; | ||
|
|
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| extern const is31fl3218_led_t PROGMEM g_is31fl3218_leds[LED_MATRIX_LED_COUNT]; | ||
|
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| void is31fl3218_init(void); | ||
|
|
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| void is31fl3218_set_value(int index, uint8_t value); | ||
|
|
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| void is31fl3218_set_value_all(uint8_t value); | ||
|
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| void is31fl3218_set_led_control_register(uint8_t index, bool value); | ||
|
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| void is31fl3218_update_pwm_buffers(void); | ||
|
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| void is31fl3218_update_led_control_registers(void); | ||
|
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||
| #define OUT1 0x01 | ||
| #define OUT2 0x02 | ||
| #define OUT3 0x03 | ||
| #define OUT4 0x04 | ||
| #define OUT5 0x05 | ||
| #define OUT6 0x06 | ||
| #define OUT7 0x07 | ||
| #define OUT8 0x08 | ||
| #define OUT9 0x09 | ||
| #define OUT10 0x0A | ||
| #define OUT11 0x0B | ||
| #define OUT12 0x0C | ||
| #define OUT13 0x0D | ||
| #define OUT14 0x0E | ||
| #define OUT15 0x0F | ||
| #define OUT16 0x10 | ||
| #define OUT17 0x11 | ||
| #define OUT18 0x12 |
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