Replace serial.c of quantum/split_common/ (#4669)

* Add provisional Helix implementation to test the quantum/split_common.

* copy keyboards/helix/serial.[ch] to quantum/split_common/

* Make serial.c a pure driver.

Remove buffer name and buffer size from serial.c. They should be placed in the caller(matrix.c, split_utils.c).

* remove quantum/split_common/serial_backward_compatibility.h

* Changed array serial_master_buffer to structure serial_m2s_buffer.

* Changed array serial_slave_buffer to structure serial_s2m_buffer.

* Change keyboards/miniaxe/matrix.c

I also made changes to quantum/split_comon/matrix.c to keyboards/miniaxe/matrix.c.

Note: I contacted @ka2hiro, creator of miniaxe, and I got permission to change keyboards/miniaxe/matrix.c.

* update history comment in quantum/split_common/serial.c

* Revert "Add provisional Helix implementation to test the quantum/split_common."

This reverts commit 168c82ef82c88e79979d9796bab9cc819cc2f685.

* fix keyboards/miniaxe/matrix.c, quantum/split_common/matrix.c

avr-gcc 4.9.[23] report error.
avr-gcc 5.4.0, avr-gcc 7.3.0 pass.
It is funny.

* update comment quantum/split_common/serial.c

* Reserve RGBLIGHT_SPLIT macro in quantum/split_common

1 files changed, 53 insertions, 8 deletions

diff --git a/quantum/split_common/matrix.c b/quantum/split_common/matrix.c
index d6359b51f..261137638 100644
--- a/quantum/split_common/matrix.c
+++ b/quantum/split_common/matrix.c
@@ -32,9 +32,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "timer.h"
 #include "split_flags.h"
 
-#ifdef RGBLIGHT_ENABLE
-#   include "rgblight.h"
-#endif
 #ifdef BACKLIGHT_ENABLE
 #   include "backlight.h"
     extern backlight_config_t backlight_config;
@@ -55,6 +52,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     static bool debouncing = false;
 #endif
 
+#if defined(USE_I2C) || defined(EH)
+
 #if (MATRIX_COLS <= 8)
 #    define print_matrix_header()  print("\nr/c 01234567\n")
 #    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
@@ -63,6 +62,27 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #else
 #    error "Currently only supports 8 COLS"
 #endif
+
+#else // USE_SERIAL
+
+#if (MATRIX_COLS <= 8)
+#    define print_matrix_header()  print("\nr/c 01234567\n")
+#    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop(matrix[i])
+#    define ROW_SHIFTER ((uint8_t)1)
+#elif (MATRIX_COLS <= 16)
+#    define print_matrix_header()  print("\nr/c 0123456789ABCDEF\n")
+#    define print_matrix_row(row)  print_bin_reverse16(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop16(matrix[i])
+#    define ROW_SHIFTER ((uint16_t)1)
+#elif (MATRIX_COLS <= 32)
+#    define print_matrix_header()  print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
+#    define print_matrix_row(row)  print_bin_reverse32(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop32(matrix[i])
+#    define ROW_SHIFTER  ((uint32_t)1)
+#endif
+
+#endif
 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
 
 #define ERROR_DISCONNECT_COUNT 5
@@ -286,24 +306,48 @@ i2c_error: // the cable is disconnceted, or something else went wrong
 
 #else // USE_SERIAL
 
+
+typedef struct _Serial_s2m_buffer_t {
+    // TODO: if MATRIX_COLS > 8 change to uint8_t packed_matrix[] for pack/unpack
+    matrix_row_t smatrix[ROWS_PER_HAND];
+} Serial_s2m_buffer_t;
+
+volatile Serial_s2m_buffer_t serial_s2m_buffer = {};
+volatile Serial_m2s_buffer_t serial_m2s_buffer = {};
+uint8_t volatile status0 = 0;
+
+SSTD_t transactions[] = {
+    { (uint8_t *)&status0,
+      sizeof(serial_m2s_buffer), (uint8_t *)&serial_m2s_buffer,
+      sizeof(serial_s2m_buffer), (uint8_t *)&serial_s2m_buffer
+  }
+};
+
+void serial_master_init(void)
+{ soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); }
+
+void serial_slave_init(void)
+{ soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
+
 int serial_transaction(void) {
     int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
 
-    if (serial_update_buffers()) {
+    if (soft_serial_transaction()) {
         return 1;
     }
 
+    // TODO:  if MATRIX_COLS > 8 change to unpack()
     for (int i = 0; i < ROWS_PER_HAND; ++i) {
-        matrix[slaveOffset+i] = serial_slave_buffer[i];
+        matrix[slaveOffset+i] = serial_s2m_buffer.smatrix[i];
     }
     
-    #ifdef RGBLIGHT_ENABLE
+    #if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
         // Code to send RGB over serial goes here (not implemented yet)
     #endif
     
     #ifdef BACKLIGHT_ENABLE
         // Write backlight level for slave to read
-        serial_master_buffer[SERIAL_BACKLIT_START] = backlight_config.enable ? backlight_config.level : 0;
+        serial_m2s_buffer.backlight_level = backlight_config.enable ? backlight_config.level : 0;
     #endif
 
     return 0;
@@ -346,8 +390,9 @@ void matrix_slave_scan(void) {
         i2c_slave_buffer[I2C_KEYMAP_START+i] = matrix[offset+i];
     }   
 #else // USE_SERIAL
+    // TODO: if MATRIX_COLS > 8 change to pack()
     for (int i = 0; i < ROWS_PER_HAND; ++i) {
-        serial_slave_buffer[i] = matrix[offset+i];
+        serial_s2m_buffer.smatrix[i] = matrix[offset+i];
     }
 #endif
     matrix_slave_scan_user();