1 files changed, 27 insertions, 0 deletions
diff --git a/quantum/split_common/transport.c b/quantum/split_common/transport.c
index ab421adc4a..3234a3ef55 100644
--- a/quantum/split_common/transport.c
+++ b/quantum/split_common/transport.c
@@ -35,6 +35,9 @@ typedef struct _I2C_slave_buffer_t {
 #    ifdef ENCODER_ENABLE
     uint8_t encoder_state[NUMBER_OF_ENCODERS];
 #    endif
+#    ifdef WPM_ENABLE
+    uint8_t current_wpm;
+#    endif
 } I2C_slave_buffer_t;
 
 static I2C_slave_buffer_t *const i2c_buffer = (I2C_slave_buffer_t *)i2c_slave_reg;
@@ -43,6 +46,7 @@ static I2C_slave_buffer_t *const i2c_buffer = (I2C_slave_buffer_t *)i2c_slave_re
 #    define I2C_RGB_START offsetof(I2C_slave_buffer_t, rgblight_sync)
 #    define I2C_KEYMAP_START offsetof(I2C_slave_buffer_t, smatrix)
 #    define I2C_ENCODER_START offsetof(I2C_slave_buffer_t, encoder_state)
+#    define I2C_WPM_START offsetof(I2C_slave_buffer_t, current_wpm)
 
 #    define TIMEOUT 100
 
@@ -79,6 +83,14 @@ bool transport_master(matrix_row_t matrix[]) {
     encoder_update_raw(i2c_buffer->encoder_state);
 #    endif
 
+#    ifdef WPM_ENABLE
+    uint8_t current_wpm = get_current_wpm();
+    if(current_wpm != i2c_buffer->current_wpm) {
+        if (i2c_writeReg(SLAVE_I2C_ADDRESS, I2C_WPM_START, (void *)&current_wpm, sizeof(current_wpm), TIMEOUT) >= 0) {
+            i2c_buffer->current_wpm = current_wpm;
+        }
+    }
+#    endif
     return true;
 }
 
@@ -102,6 +114,10 @@ void transport_slave(matrix_row_t matrix[]) {
 #    ifdef ENCODER_ENABLE
     encoder_state_raw(i2c_buffer->encoder_state);
 #    endif
+
+#    ifdef WPM_ENABLE
+    set_current_wpm(i2c_buffer->current_wpm);
+#    endif
 }
 
 void transport_master_init(void) { i2c_init(); }
@@ -126,6 +142,9 @@ typedef struct _Serial_m2s_buffer_t {
 #    ifdef BACKLIGHT_ENABLE
     uint8_t backlight_level;
 #    endif
+#    ifdef WPM_ENABLE
+    uint8_t current_wpm;
+#    endif
 } Serial_m2s_buffer_t;
 
 #    if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
@@ -228,6 +247,10 @@ bool transport_master(matrix_row_t matrix[]) {
     encoder_update_raw((uint8_t *)serial_s2m_buffer.encoder_state);
 #    endif
 
+#    ifdef WPM_ENABLE
+    // Write wpm to slave
+    serial_m2s_buffer.current_wpm = get_current_wpm();
+#    endif
     return true;
 }
 
@@ -244,6 +267,10 @@ void transport_slave(matrix_row_t matrix[]) {
 #    ifdef ENCODER_ENABLE
     encoder_state_raw((uint8_t *)serial_s2m_buffer.encoder_state);
 #    endif
+
+#    ifdef WPM_ENABLE
+     set_current_wpm(serial_m2s_buffer.current_wpm);
+#    endif
 }
 
 #endif