pins.c: Modify and correct LED pin mappings and names for Xiao

Added YELLOW_LED=LED=D13,
      BLUE1_LED=RX_LED,
      BLUE2_LED=TX_LED

Author: Rick Sorensen

ports/atmel-samd/boards/seeeduino_xiao/pins.c

@@ -29,7 +29,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_PA07) },
     { MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_PA05) },
     { MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_PA06) },
-    { MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_PA17) },
+    { MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_PA17) },  // yellow_led
 
     // UART pins
     { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PB08) },
@@ -45,8 +45,16 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PA08) },
 
     // LED pins
-    { MP_ROM_QSTR(MP_QSTR_LED),   MP_ROM_PTR(&pin_PA17) }, // status
-    { MP_ROM_QSTR(MP_QSTR_BLUE_LED),   MP_ROM_PTR(&pin_PA17) },
+    //    duplicate names for test LED ... see D13
+    { MP_ROM_QSTR(MP_QSTR_LED),   MP_ROM_PTR(&pin_PA17) }, // 
+    { MP_ROM_QSTR(MP_QSTR_YELLOW_LED),   MP_ROM_PTR(&pin_PA17) }, 
+    //    2 blue LEDs ... uart rx/tx indicator is default use
+    { MP_ROM_QSTR(MP_QSTR_RX_LED),   MP_ROM_PTR(&pin_PA18) },
+    { MP_ROM_QSTR(MP_QSTR_TX_LED),   MP_ROM_PTR(&pin_PA19) },
+    //    create duplicate mappings with BLUE in name
+    { MP_ROM_QSTR(MP_QSTR_BLUE1_LED),   MP_ROM_PTR(&pin_PA18) },
+    { MP_ROM_QSTR(MP_QSTR_BLUE2_LED),   MP_ROM_PTR(&pin_PA19) },
+    
 
     // Comm objects
     { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },