diff options
Diffstat (limited to 'drivers/issi/is31fl3218.c')
-rw-r--r-- | drivers/issi/is31fl3218.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/drivers/issi/is31fl3218.c b/drivers/issi/is31fl3218.c deleted file mode 100644 index d43863ac4b..0000000000 --- a/drivers/issi/is31fl3218.c +++ /dev/null @@ -1,96 +0,0 @@ -/* 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 "i2c_master.h" - -// This is the full 8-bit address -#define ISSI_ADDRESS 0b10101000 - -// These are the register addresses -#define ISSI_REG_SHUTDOWN 0x00 -#define ISSI_REG_PWM 0x01 -#define ISSI_REG_CONTROL 0x13 -#define ISSI_REG_UPDATE 0x16 -#define ISSI_REG_RESET 0x17 - -// Default timeout if no I2C response -#define ISSI_TIMEOUT 100 - -// Reusable buffer for transfers -uint8_t g_twi_transfer_buffer[20]; - -// IS31FL3218 has 18 PWM outputs and a fixed I2C address, so no chaining. -// If used as RGB LED driver, LEDs are assigned RGB,RGB,RGB,RGB,RGB,RGB -uint8_t g_pwm_buffer[18]; -bool g_pwm_buffer_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; - i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 2, ISSI_TIMEOUT); -} - -void IS31FL3218_write_pwm_buffer(uint8_t *pwm_buffer) { - g_twi_transfer_buffer[0] = ISSI_REG_PWM; - for (int i = 0; i < 18; i++) { - g_twi_transfer_buffer[1 + i] = pwm_buffer[i]; - } - - i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 19, ISSI_TIMEOUT); -} - -void IS31FL3218_init(void) { - // In case we ever want to reinitialize (?) - IS31FL3218_write_register(ISSI_REG_RESET, 0x00); - - // Turn off software shutdown - IS31FL3218_write_register(ISSI_REG_SHUTDOWN, 0x01); - - // Set all PWM values to zero - for (uint8_t i = 0; i < 18; i++) { - IS31FL3218_write_register(ISSI_REG_PWM + i, 0x00); - } - - // Enable all channels - for (uint8_t i = 0; i < 3; i++) { - IS31FL3218_write_register(ISSI_REG_CONTROL + i, 0b00111111); - } - - // Load PWM registers and LED Control register data - IS31FL3218_write_register(ISSI_REG_UPDATE, 0x01); -} - -void IS31FL3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { - g_pwm_buffer[index * 3 + 0] = red; - g_pwm_buffer[index * 3 + 1] = green; - g_pwm_buffer[index * 3 + 2] = blue; - g_pwm_buffer_update_required = true; -} - -void IS31FL3218_set_color_all(uint8_t red, uint8_t green, uint8_t blue) { - for (int i = 0; i < 6; i++) { - IS31FL3218_set_color(i, red, green, blue); - } -} - -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(ISSI_REG_UPDATE, 0x01); - } - g_pwm_buffer_update_required = false; -} |