Added the scripts used for combining the audio files and flashing

The makebin.sh script takes all the .wav files in a directory,
resamples them to 8kHz, 8-bit unsigned integer RAW files. It then
concatenates these all together, while creating a text listing of
how long each clip is and the start position for that clip. It also
spits out some useful C code that does require some modification
before being pasted into the code, but makes things much easier
for fast prototyping.

The programFlash.py script connects to the chip over UART, sends it
64 bytes at a time to program into the flash chip, and repeats this
until all the data has been transferred. This mechanism does seem
to work, the only part that needs to be tested still is the SPI
connection to the flash chip.

makebin.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+rm audio.bin
+rm fsize.txt total.txt
+
+total=0
+numfiles=1
+# Remake all the raw files
+for f in *.wav ; do
+	name=$(echo $f | cut -f 1 -d '.')
+	sox $f -r 8000 -b 8 -e unsigned-integer -G $name.raw
+	numfiles=$(($numfiles + 1))
+done
+
+printf "const uint32_t audioAddress[%d] = { 0x0, " $numfiles > total.txt
+printf "const uint32_t audioSize[%d] = { " $numfiles > fsize.txt
+# Concatenate all the raws and list their sizes
+for f in *.raw ; do
+	cat $f >> audio.bin
+	fsize=$(du -sb $f | awk '{print $1}')
+	total=$(($total + $fsize))
+	printf "%#010x, " $fsize >> fsize.txt
+	printf "%#010x, " $total >> total.txt
+done
+
+printf " };" >> fsize.txt
+printf " };" >> total.txt
+
+printf "Total filesize is %d\n" $total
+printf "#define AUDIO_SIZE %d\n" $total
+echo " "
+cat fsize.txt
+echo " "
+cat total.txt

programFlash.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+
+import serial
+import sys
+def program():
+    print("Starting transfer...\n")
+    with open("audio.bin", "rb") as binFile:
+        sport = serial.Serial(port="/dev/ttyUSB0", baudrate=19200, dsrdtr=True)
+        #sport = serial.Serial(port="/dev/pts/7", baudrate=115200)
+        sport.reset_input_buffer()
+        count = 0
+        while(dataBuffer := binFile.read(64)):
+              sport.read_until(b'\x33')
+              sport.write(dataBuffer)
+              print(".", end="", file=sys.stdout, flush=True)
+
+        sport.close()
+
+    print("All done?")
+
+if __name__ == '__main__':
+    program()