added a single-byte uart interface
diff --git a/bbb_cape/src/cape/peripherial_usage.notes b/bbb_cape/src/cape/peripherial_usage.notes
index ee5c0a8..5f361f7 100644
--- a/bbb_cape/src/cape/peripherial_usage.notes
+++ b/bbb_cape/src/cape/peripherial_usage.notes
@@ -5,12 +5,15 @@
 with choosing things like timers.
 
 [BBB communication]
-USART1
-uart.[ch]
+uart_common
+  USART1
+uart
   USART1_IRQ:3
-uart_dma.[ch]
+uart_dma
   DMA2.7:2
   DMA2.7_IRQ:6
+uart_byte
+  TIM7
 
 [gyro communication]
 SPI3
@@ -19,10 +22,10 @@
 SPI2
 
 [encoders]
-encoder.c
+encoder
   TIM1,TIM2,TIM3,TIM4,TIM5,TIM8
 
 [sensor packet sending]
-fill_packet.c
+fill_packet
   TIM6
   CRC