#!/bin/bash
# Copyright 2013, 2015, Sinclair R.F., Inc.

NAME=UART_Rx

cat <<EOF > tb.good
48
65
6c
6c
6f
20
57
6f
72
6c
63
12
0d
0a
00
EOF

# Test +/-2.7% and 0% baud rates.
cp tb_${NAME}.s-normal tb_${NAME}.s;
cp tb.v-normal tb.v
for baud in 112089 115200 118310; do
  sed -e "s/115200/${baud}/" tb_${NAME}.9x8-good > tb_${NAME}.9x8;
  ../../../../../ssbcc -q -P monitor_stack tb_${NAME}.9x8 || { echo "${NAME} compile failed" > /dev/stderr; exit 1; }
  iverilog -o tb tb.v tb_${NAME}.v || { echo "${NAME} build failed" > /dev/stderr; exit 1; }
  ./tb > tb.out;
  if ! cmp -s tb.out tb.good; then
    echo "${NAME} failed testing baud rate:  ${baud}" > /dev/stderr;
    exit 1;
  fi
done

# Partial test for input FIFO.
cp tb_${NAME}.s-fifo tb_${NAME}.s;
cp tb.v-normal tb.v
sed -e "s/G_BAUD$/G_BAUD inFIFO=16/" tb_${NAME}.9x8-good > tb_${NAME}.9x8;
../../../../../ssbcc -q -P monitor_stack tb_${NAME}.9x8 || { echo "${NAME} compile failed" > /dev/stderr; exit 1; }
iverilog -o tb tb.v tb_${NAME}.v || { echo "${NAME} build failed" > /dev/stderr; exit 1; }
./tb > tb.out
if ! cmp tb.out tb.good; then
  echo "${NAME} FIFO test failed" > /dev/stderr;
  exit 1;
fi

# Validate RTRn signal generation
cp tb_${NAME}.s-rtrn tb_${NAME}.s
cp tb.v-rtrn tb.v
for RTR_BUFFER in 1 2 4; do
  for RTR_OVERFLOW  in 0 1 2 3; do
    if [ ${RTR_OVERFLOW} -ge ${RTR_BUFFER} ]; then continue; fi
    sed -e "s/G_BAUD$/G_BAUD inFIFO=8 RTRn=o_uart_rtrn rtr_buffer=${RTR_BUFFER}/" tb_${NAME}.9x8-good > tb_${NAME}.9x8;
    sed -e "s/@RTR_OVERFLOW@/${RTR_OVERFLOW}/" tb.v-rtrn > tb.v;
    ../../../../../ssbcc -q -P monitor_stack tb_${NAME}.9x8 || { echo "${NAME} compile failed" > /dev/stderr; exit 1; }
    iverilog -o tb tb.v tb_${NAME}.v || { echo "${NAME} build failed" > /dev/stderr; exit 1; }
    ./tb > tb.out
    if ! cmp tb.out tb.good; then
      echo "${NAME} FIFO test failed" > /dev/stderr;
      exit 1;
    fi
  done
done

echo "Passed:  ${NAME}";
exit 0;