Added symbols b, C, d, E, F #2.

lib/led.h

@@ -70,12 +70,17 @@ E   C
 #define SPI_DATA      GPIO_PIN_3
 
 typedef enum {
-  led_Plus = 0xa,
-  led_Minus = 0xb,
-  led_H = 0xc,
-  led_O = 0xd,
-  led_U = 0xe,
-  led_A = 0xf,
+  led_A = 0xa,
+  led_B = 0xb,
+  led_C = 0xc,
+  led_D = 0xd,
+  led_E = 0xe,
+  led_F = 0xf,
+  led_H = 0x11,
+  led_U = 0x12,
+  led_Plus = 0x21,
+  led_Minus = 0x22,
+  led_O = 0xd, /* gradus */
   led_Off = 0xff
 } led_sym_t;