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#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <SN32F260.h>
#include "ch.h"
#include "hal.h"
#include "color.h"
#include "wait.h"
#include "util.h"
#include "matrix.h"
#include "debounce.h"
#include "quantum.h"
#define I2C_SCL C1
#define I2C_SDA C2
#define I2C_SCL_IN readPin(I2C_SCL)
#define I2C_SDA_IN readPin(I2C_SDA)
#define I2C_SDB C0
#define I2C_SCL_HI do { setPinOutput(I2C_SCL); writePinHigh(I2C_SCL); } while (0)
#define I2C_SCL_LO do { setPinOutput(I2C_SCL); writePinLow(I2C_SCL); } while (0)
#define I2C_SCL_HIZ do { setPinInputHigh(I2C_SCL); } while (0)
#define I2C_SDA_HI do { setPinOutput(I2C_SDA); writePinHigh(I2C_SDA); } while (0)
#define I2C_SDA_LO do { setPinOutput(I2C_SDA); writePinLow(I2C_SDA); } while (0)
#define I2C_SDA_HIZ do { setPinInputHigh(I2C_SDA); } while (0)
/*
* according to the spec, high SCL peroid 0.7us, low SCL peroid 1.3us
*
* i2c_delay 1 loop about 7 cycles. Under 48MHz, the actual delay is around 0.9us and 1.5us respectively.
*/
#define I2C_SCL_HI_DELAY i2c_delay(2)
#define I2C_DELAY i2c_delay(10)
static uint8_t sel_frame[2] = {0xFF, 0xFF};
static uint8_t sel_frame_idx = 0;
#ifdef VIA_OPENRGB_HYBRID
uint8_t is_orgb_mode;
#endif
static void i2c_delay(uint32_t loop)
{
#pragma GCC unroll 0
for (int32_t i = 0; i < loop; i++)
SN_WDT->FEED = 0x5AFA55AA;
}
void i2c_init(void)
{
// drive strength all gpio A 20ma
SN_GPIO0->MODE |= 0xFFFF0000;
setPinOutput(I2C_SCL);
I2C_SCL_HI;
I2C_SDA_HI;
I2C_SDA_HIZ;
writePinHigh(I2C_SDB);
setPinOutput(I2C_SDB);
i2c_delay(100);
}
static void i2c_process_bit(uint8_t *i2c_tx_byte)
{
if (*i2c_tx_byte & 0x80)
{
I2C_SDA_HI;
}
else
{
I2C_SDA_LO;
}
*i2c_tx_byte = *i2c_tx_byte << 1;
I2C_SCL_HI;
I2C_SCL_HI_DELAY;
I2C_SCL_LO;
I2C_DELAY;
}
static uint8_t i2c_transaction(uint8_t i2c_addr_rw, uint8_t* i2c_data_ptr, uint8_t i2c_byte_ct)
{
uint8_t txb;
uint8_t fail = 0;
/* START */
I2C_SDA_LO;
I2C_DELAY;
I2C_SCL_LO;
I2C_DELAY;
txb = i2c_addr_rw;
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
goto I2C_STATE_READ_ACK;
I2C_STATE_WRITE_BYTE:
I2C_SDA_LO;
I2C_SCL_LO;
txb = *i2c_data_ptr++;
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_process_bit(&txb);
i2c_byte_ct--;
I2C_STATE_READ_ACK:
I2C_SDA_HIZ;
I2C_SCL_HI;
I2C_SCL_HI_DELAY;
/* ignore ACK */
fail = I2C_SDA_IN;
I2C_SCL_LO;
I2C_DELAY;
if (i2c_byte_ct > 0)
goto I2C_STATE_WRITE_BYTE;
I2C_SDA_LO;
I2C_DELAY;
/* STOP */
I2C_SCL_HI;
I2C_DELAY;
I2C_SDA_HI;
I2C_SDA_HIZ;
return fail;
}
static uint8_t i2c_write_buf(uint8_t devid, uint8_t* data, uint8_t len)
{
int32_t tries = 1;
while ((tries-- > 0) && i2c_transaction(devid, data, len));
return 0;
}
static void i2c_write_reg(uint8_t devid, uint8_t reg, uint8_t data)
{
uint8_t i2c_data[2];
i2c_data[0] = reg;
i2c_data[1] = data;
i2c_write_buf(devid, i2c_data, 2);
}
static void reset_rgb(int devid)
{
i2c_write_reg(devid, 0xFD, 0x0B);
i2c_write_reg(devid, 0x0A, 0x00);
i2c_write_reg(devid, 0x00, 0x00);
i2c_write_reg(devid, 0x01, 0x10);
i2c_write_reg(devid, 0x05, 0x00);
i2c_write_reg(devid, 0x06, 0x00);
i2c_write_reg(devid, 0x08, 0x00);
i2c_write_reg(devid, 0x09, 0x00);
i2c_write_reg(devid, 0x0B, 0x00);
i2c_write_reg(devid, 0x0D, 0x0F);
i2c_write_reg(devid, 0x0E, 0x01);
i2c_write_reg(devid, 0x14, 68);
i2c_write_reg(devid, 0x15, 128);
i2c_write_reg(devid, 0x0F, 153);
i2c_write_reg(devid, 0xFD, 0);
for (int32_t i = 0; i < 0x10; i++)
i2c_write_reg(devid, i, 0xFF);
/* skip blink control 0x10~0x1F as reset 0 */
for (int32_t i = 0x20; i < 0xA0; i++)
i2c_write_reg(devid, i, 0);
i2c_write_reg(devid, 0xFD, 1);
for (int32_t i = 0; i < 0x10; i++)
i2c_write_reg(devid, i, 0xFF);
/* skip blink control 0x10~0x1F as reset 0 */
for (int32_t i = 0x20; i < 0xA0; i++)
i2c_write_reg(devid, i, 0);
i2c_write_reg(devid, 0xFD, 0xB);
i2c_write_reg(devid, 0x0A, 1);
}
/*
* led index to RGB address
*/
static const uint8_t g_led_pos[DRIVER_LED_TOTAL] = {
/*0*/ 0xC0,
/*1*/ 0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xB,0xD,0xC,
/*2*/ 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x9C,0x9D,0x9E,0x9F,
/*3*/ 0x60,0x61,0x62,0x63,0x64,0x65,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0xF,0x6F,
/*4*/ 0x30,0x2,0x31,0x32,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,
/*5*/ 0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xA
};
static void set_pwm(uint8_t dev, uint8_t addr, uint8_t value)
{
/* >=0x80 for frame 2 otherwise frame 1 */
if (addr >= 0x80) {
if (sel_frame[sel_frame_idx] != 1) {
i2c_write_reg(dev, 0xFD, 1);
sel_frame[sel_frame_idx] = 1;
}
addr -= 0x80;
}
else if (sel_frame[sel_frame_idx] != 0) {
i2c_write_reg(dev, 0xFD, 0);
sel_frame[sel_frame_idx] = 0;
}
i2c_write_reg(dev, addr + 0x20, value);
}
static void _set_color_direct(int index, uint8_t r, uint8_t g, uint8_t b)
{
uint8_t dev;
int l = g_led_pos[index];
dev = 0xEE;
set_pwm(dev, l, r);
set_pwm(dev, l + 0x10, g);
set_pwm(dev, l + 0x20, b);
}
void _set_color(int index, uint8_t r, uint8_t g, uint8_t b)
{
#ifdef VIA_OPENRGB_HYBRID
if (!is_orgb_mode && (index == 15 || index == 35 || index == 49))
r = g = b = 255;
#endif
_set_color_direct(index, r, g, b);
}
void _read_color(int index, uint8_t *r, uint8_t *g, uint8_t *b)
{
*r = 0;
*g = 0;
*b = 0;
}
void process_backlight(uint8_t devid, volatile LED_TYPE *states)
{
static unsigned char state = 0;
switch (state)
{
case 0: /* init RGB chips */
i2c_init();
reset_rgb(0xEE);
state = 1;
break;
}
}
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