adjustments to brot

Author: sylefeb

frameworks/boards/brot/board.json

@@ -8,7 +8,9 @@
         {"set"    : "basic", "define" : "BASIC=1"},
         {"set"    : "buttons", "define" : "BUTTONS=1"},
         {"set"    : "pmod", "define" : "PMOD=1"},
+        {"set"    : "serial_in", "define" : "SERIAL_IN=1"},
         {"set"    : "uart", "define" : "UART=1"},
+        {"set"    : "uart_rx_only", "define" : "UART_RX_ONLY=1"},
         {"set"    : "uart2", "define" : "UART2=1"},
         {"set"    : "spiflash", "define" : "SPIFLASH=1"},
         {"set"    : "spiflash_dspi", "define" : "SPIFLASH_DSPI=1"},

frameworks/boards/brot/brot.v

@@ -113,10 +113,16 @@ module top(
   output PMOD_B7,
   output PMOD_B8,
 `endif
+`ifdef SERIAL_IN
+  input PMOD_A2,
+`endif
 `ifdef UART
   output PMOD_B7,  // TX
   input  PMOD_B10, // RX
 `endif
+`ifdef UART_RX_ONLY
+  input  PMOD_B10, // RX
+`endif
 `ifdef UART2
   output GPIO0,  // TX
   input  GPIO1, // RX
@@ -276,14 +282,20 @@ M_main __main(
 `ifdef PARALLEL_SCREEN
   .out_prlscreen_d({GPIO7,GPIO6,GPIO5,GPIO4,GPIO3,GPIO2,GPIO1,GPIO0}),
   .out_prlscreen_resn(PMOD_B1),
-  .out_prlscreen_csn (/*PMOD_B7*/prlscreen_unused),
+  .out_prlscreen_csn (PMOD_B7),
   .out_prlscreen_rs  (PMOD_B8),
   .out_prlscreen_clk (PMOD_B2),
 `endif
+`ifdef SERIAL_IN
+  .in_serial_in(PMOD_A2),
+`endif
 `ifdef UART
   .out_uart_tx(PMOD_B7),
   .in_uart_rx (PMOD_B10),
 `endif
+`ifdef UART_RX_ONLY
+  .in_uart_rx (PMOD_B10),
+`endif
 `ifdef UART2
   .out_uart_tx(GPIO0),
   .in_uart_rx (GPIO1),