Next set of split_common changes (#4974)
* Update split_common to use standard i2c drivers * Eliminate RGB_DIRTY/BACKLIT_DIRTY * Fix avr i2c_master error handling * Fix i2c_slave addressing * Remove unneeded timeout on i2c_stop() * Fix RGB I2C transfers * Remove incorrect comment
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					 24 changed files with 187 additions and 614 deletions
				
			
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			@ -3,146 +3,83 @@
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#include "matrix.h"
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#include "quantum.h"
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#define ROWS_PER_HAND (MATRIX_ROWS/2)
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#define ROWS_PER_HAND (MATRIX_ROWS / 2)
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#ifdef RGBLIGHT_ENABLE
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#   include "rgblight.h"
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#  include "rgblight.h"
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#endif
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#ifdef BACKLIGHT_ENABLE
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# include "backlight.h"
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  extern backlight_config_t backlight_config;
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#  include "backlight.h"
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extern backlight_config_t backlight_config;
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#endif
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#if defined(USE_I2C) || defined(EH)
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#include "i2c.h"
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#  include "i2c_master.h"
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#  include "i2c_slave.h"
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#ifndef SLAVE_I2C_ADDRESS
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#  define SLAVE_I2C_ADDRESS           0x32
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#endif
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#  define I2C_BACKLIT_START 0x00
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// Need 4 bytes for RGB (32 bit)
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#  define I2C_RGB_START 0x01
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#  define I2C_KEYMAP_START 0x05
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#if (MATRIX_COLS > 8)
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#  error "Currently only supports 8 COLS"
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#endif
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#  define TIMEOUT 100
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#  ifndef SLAVE_I2C_ADDRESS
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#    define SLAVE_I2C_ADDRESS 0x32
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#  endif
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// Get rows from other half over i2c
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bool transport_master(matrix_row_t matrix[]) {
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  int err = 0;
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  i2c_readReg(SLAVE_I2C_ADDRESS, I2C_KEYMAP_START, (void *)matrix, ROWS_PER_HAND * sizeof(matrix_row_t), TIMEOUT);
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  // write backlight info
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#ifdef BACKLIGHT_ENABLE
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  if (BACKLIT_DIRTY) {
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    err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
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    if (err) { goto i2c_error; }
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    // Backlight location
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    err = i2c_master_write(I2C_BACKLIT_START);
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    if (err) { goto i2c_error; }
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    // Write backlight
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    i2c_master_write(get_backlight_level());
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    BACKLIT_DIRTY = false;
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#  ifdef BACKLIGHT_ENABLE
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  static uint8_t prev_level = ~0;
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  uint8_t        level      = get_backlight_level();
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  if (level != prev_level) {
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    i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_BACKLIT_START, (void *)&level, sizeof(level), TIMEOUT);
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    prev_level = level;
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  }
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#endif
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#  endif
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  err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
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  if (err) { goto i2c_error; }
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  // start of matrix stored at I2C_KEYMAP_START
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  err = i2c_master_write(I2C_KEYMAP_START);
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  if (err) { goto i2c_error; }
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  // Start read
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  err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
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  if (err) { goto i2c_error; }
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  if (!err) {
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    int i;
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    for (i = 0; i < ROWS_PER_HAND-1; ++i) {
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      matrix[i] = i2c_master_read(I2C_ACK);
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    }
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    matrix[i] = i2c_master_read(I2C_NACK);
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    i2c_master_stop();
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  } else {
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i2c_error: // the cable is disconnceted, or something else went wrong
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    i2c_reset_state();
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    return false;
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#  ifdef RGBLIGHT_ENABLE
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  static uint32_t prev_rgb = ~0;
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  uint32_t        rgb      = eeconfig_read_rgblight();
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  if (rgb != prev_rgb) {
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    i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_RGB_START, (void *)&rgb, sizeof(rgb), TIMEOUT);
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    prev_rgb = rgb;
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  }
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#ifdef RGBLIGHT_ENABLE
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  if (RGB_DIRTY) {
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    err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
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    if (err) { goto i2c_error; }
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    // RGB Location
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    err = i2c_master_write(I2C_RGB_START);
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    if (err) { goto i2c_error; }
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    uint32_t dword = eeconfig_read_rgblight();
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    // Write RGB
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    err = i2c_master_write_data(&dword, 4);
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    if (err) { goto i2c_error; }
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    RGB_DIRTY = false;
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    i2c_master_stop();
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  }
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#endif
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#  endif
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  return true;
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}
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void transport_slave(matrix_row_t matrix[]) {
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  for (int i = 0; i < ROWS_PER_HAND; ++i)
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  {
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    i2c_slave_buffer[I2C_KEYMAP_START + i] = matrix[i];
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  for (int i = 0; i < ROWS_PER_HAND * sizeof(matrix_row_t); ++i) {
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    i2c_slave_reg[I2C_KEYMAP_START + i] = matrix[i];
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  }
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  // Read Backlight Info
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  #ifdef BACKLIGHT_ENABLE
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  if (BACKLIT_DIRTY)
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  {
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    backlight_set(i2c_slave_buffer[I2C_BACKLIT_START]);
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    BACKLIT_DIRTY = false;
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  }
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  #endif
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  #ifdef RGBLIGHT_ENABLE
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  if (RGB_DIRTY)
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  {
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    // Disable interupts (RGB data is big)
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    cli();
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    // Create new DWORD for RGB data
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    uint32_t dword;
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    // Fill the new DWORD with the data that was sent over
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    uint8_t * dword_dat = (uint8_t *)(&dword);
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    for (int i = 0; i < 4; i++)
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    {
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      dword_dat[i] = i2c_slave_buffer[I2C_RGB_START + i];
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    }
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// Read Backlight Info
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#  ifdef BACKLIGHT_ENABLE
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  backlight_set(i2c_slave_reg[I2C_BACKLIT_START]);
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#  endif
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    // Update the RGB now with the new data and set RGB_DIRTY to false
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    rgblight_update_dword(dword);
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    RGB_DIRTY = false;
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    // Re-enable interupts now that RGB is set
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    sei();
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  }
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  #endif
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#  ifdef RGBLIGHT_ENABLE
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  uint32_t rgb = *(uint32_t *)(i2c_slave_reg + I2C_RGB_START);
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  // Update the RGB with the new data
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  rgblight_update_dword(rgb);
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#  endif
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}
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void transport_master_init(void) {
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  i2c_master_init();
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}
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void transport_master_init(void) { i2c_init(); }
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void transport_slave_init(void) {
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  i2c_slave_init(SLAVE_I2C_ADDRESS);
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}
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void transport_slave_init(void) { i2c_slave_init(SLAVE_I2C_ADDRESS); }
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#else // USE_SERIAL
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#else  // USE_SERIAL
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#include "serial.h"
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#  include "serial.h"
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typedef struct _Serial_s2m_buffer_t {
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  // TODO: if MATRIX_COLS > 8 change to uint8_t packed_matrix[] for pack/unpack
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			@ -150,40 +87,40 @@ typedef struct _Serial_s2m_buffer_t {
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} Serial_s2m_buffer_t;
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typedef struct _Serial_m2s_buffer_t {
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#ifdef BACKLIGHT_ENABLE
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    uint8_t backlight_level;
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#endif
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#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
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    rgblight_config_t rgblight_config; //not yet use
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    //
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    // When MCUs on both sides drive their respective RGB LED chains,
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    // it is necessary to synchronize, so it is necessary to communicate RGB information.
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    // In that case, define the RGBLIGHT_SPLIT macro.
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    //
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    // Otherwise, if the master side MCU drives both sides RGB LED chains,
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    // there is no need to communicate.
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#endif
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#  ifdef BACKLIGHT_ENABLE
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  uint8_t           backlight_level;
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#  endif
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#  if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
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  rgblight_config_t rgblight_config;  // not yet use
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  //
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  // When MCUs on both sides drive their respective RGB LED chains,
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  // it is necessary to synchronize, so it is necessary to communicate RGB
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  // information. In that case, define the RGBLIGHT_SPLIT macro.
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  //
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  // Otherwise, if the master side MCU drives both sides RGB LED chains,
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  // there is no need to communicate.
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#  endif
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} Serial_m2s_buffer_t;
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volatile Serial_s2m_buffer_t serial_s2m_buffer = {};
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volatile Serial_m2s_buffer_t serial_m2s_buffer = {};
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uint8_t volatile status0 = 0;
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uint8_t volatile status0                       = 0;
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SSTD_t transactions[] = {
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  { (uint8_t *)&status0,
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    sizeof(serial_m2s_buffer), (uint8_t *)&serial_m2s_buffer,
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    sizeof(serial_s2m_buffer), (uint8_t *)&serial_s2m_buffer
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  }
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    {
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        (uint8_t *)&status0,
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        sizeof(serial_m2s_buffer),
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        (uint8_t *)&serial_m2s_buffer,
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        sizeof(serial_s2m_buffer),
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        (uint8_t *)&serial_s2m_buffer,
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    },
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};
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void transport_master_init(void)
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{ soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); }
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void transport_master_init(void) { soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); }
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void transport_slave_init(void)
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{ soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
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void transport_slave_init(void) { soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
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bool transport_master(matrix_row_t matrix[]) {
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  if (soft_serial_transaction()) {
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    return false;
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  }
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			@ -193,32 +130,29 @@ bool transport_master(matrix_row_t matrix[]) {
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    matrix[i] = serial_s2m_buffer.smatrix[i];
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  }
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  #if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
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    // Code to send RGB over serial goes here (not implemented yet)
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  #endif
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#  if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
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  // Code to send RGB over serial goes here (not implemented yet)
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#  endif
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  #ifdef BACKLIGHT_ENABLE
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    // Write backlight level for slave to read
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    serial_m2s_buffer.backlight_level = backlight_config.enable ? backlight_config.level : 0;
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  #endif
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#  ifdef BACKLIGHT_ENABLE
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  // Write backlight level for slave to read
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  serial_m2s_buffer.backlight_level = backlight_config.enable ? backlight_config.level : 0;
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#  endif
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  return true;
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}
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void transport_slave(matrix_row_t matrix[]) {
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  // TODO: if MATRIX_COLS > 8 change to pack()
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  for (int i = 0; i < ROWS_PER_HAND; ++i)
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  {
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  for (int i = 0; i < ROWS_PER_HAND; ++i) {
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    serial_s2m_buffer.smatrix[i] = matrix[i];
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  }
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  #ifdef BACKLIGHT_ENABLE
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    backlight_set(serial_m2s_buffer.backlight_level);
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  #endif
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  #if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
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  // Add serial implementation for RGB here
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  #endif
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#  ifdef BACKLIGHT_ENABLE
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  backlight_set(serial_m2s_buffer.backlight_level);
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#  endif
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#  if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
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// Add serial implementation for RGB here
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#  endif
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}
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#endif
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