commit 30adf34ec6b6f30e9cbebc1eacd831ba2bdd8d9c
author Brian Silverman <bsilver16384@gmail.com> Sat Mar 09 18:27:56 2019 -0800
committer Brian Silverman <bsilver16384@gmail.com> Sat Mar 09 18:27:56 2019 -0800
tree bf2a44279232ef600477349130b45ef8e51b69a3
parent 3d3303f853045c8552e1330f07882bd5a8cec011

Write down the UART board label mappings

Due to schematic oversights, they're really confusing, so write them
down in comments to help with understanding in the future.

Change-Id: If356cb3dc2fa78687583f2db98b235265d67bdde

y2019/jevois/teensy.cc

diff --git a/y2019/jevois/teensy.cc b/y2019/jevois/teensy.cc
index 9ccc7d4..45a35b0 100644
--- a/y2019/jevois/teensy.cc
+++ b/y2019/jevois/teensy.cc
@@ -932,38 +932,38 @@
   PORTD_PCR6 = PORT_PCR_MUX(1);
 
   // These go to CAM1.
-  // UART0_RX (peripheral) is UART1_RX (schematic).
+  // UART0_RX (peripheral) is UART1_RX (schematic) is UART1_TX_RAW (label TX).
   PORTA_PCR15 = PORT_PCR_DSE | PORT_PCR_MUX(3) | PORT_PCR_PE /* Do a pull */ |
                 0 /* !PS to pull down */;
-  // UART0_TX (peripheral) is UART1_TX (schematic).
+  // UART0_TX (peripheral) is UART1_TX (schematic) is UART1_RX_RAW (label RX).
   PORTA_PCR14 = PORT_PCR_DSE | PORT_PCR_MUX(3);
 
   // These go to CAM0.
-  // UART1_RX (peripheral) is UART0_RX (schematic).
+  // UART1_RX (peripheral) is UART0_RX (schematic) is UART0_TX_RAW (label TX).
   PORTC_PCR3 = PORT_PCR_DSE | PORT_PCR_MUX(3) | PORT_PCR_PE /* Do a pull */ |
                0 /* !PS to pull down */;
-  // UART1_TX (peripheral) is UART0_TX (schematic).
+  // UART1_TX (peripheral) is UART0_TX (schematic) is UART0_RX_RAW (label RX).
   PORTC_PCR4 = PORT_PCR_DSE | PORT_PCR_MUX(3);
 
   // These go to CAM2.
-  // UART2_RX
+  // UART2_RX is UART2_TX_RAW (label TX).
   PORTD_PCR2 = PORT_PCR_DSE | PORT_PCR_MUX(3) | PORT_PCR_PE /* Do a pull */ |
                0 /* !PS to pull down */;
-  // UART2_TX
+  // UART2_TX is UART2_RX_RAW (label RX).
   PORTD_PCR3 = PORT_PCR_DSE | PORT_PCR_MUX(3);
 
   // These go to CAM3.
-  // UART3_RX
+  // UART3_RX is UART3_TX_RAW (label TX).
   PORTB_PCR10 = PORT_PCR_DSE | PORT_PCR_MUX(3) | PORT_PCR_PE /* Do a pull */ |
                 0 /* !PS to pull down */;
-  // UART3_TX
+  // UART3_TX is UART3_RX_RAW (label RX).
   PORTB_PCR11 = PORT_PCR_DSE | PORT_PCR_MUX(3);
 
   // These go to CAM4.
-  // UART4_RX
+  // UART4_RX is UART4_TX_RAW (label TX).
   PORTE_PCR25 = PORT_PCR_DSE | PORT_PCR_MUX(3) | PORT_PCR_PE /* Do a pull */ |
                 0 /* !PS to pull down */;
-  // UART4_TX
+  // UART4_TX is UART4_RX_RAW (label RX).
   PORTE_PCR24 = PORT_PCR_DSE | PORT_PCR_MUX(3);
 
   Uarts uarts;