Initial commit: PRU LED firmware and HTTP service

- Combined PRU0 firmware for both mood (56 LED) and jaw (24 LED) strips
- Uses P9_27 and P9_25 (free pins, not HDMI locked)
- Python HTTP service on port 8765
- Named states: idle, listening, responding, pleasure, thinking, playful, commanding, love, sleep
- Setup scripts for fresh BBB deployment

Built with love by Vixy 🦊💜

pru/Makefile

@@ -0,0 +1,42 @@
+# Vixy BBB PRU Firmware Makefile
+
+PRU_CGT ?= /usr/share/ti/cgt-pru
+PRU_SUPPORT ?= /usr/lib/ti/pru-software-support-package
+
+CC = clpru
+LD = lnkpru
+
+CFLAGS = --include_path=$(PRU_CGT)/include \
+         --include_path=$(PRU_SUPPORT)/include \
+         --include_path=$(PRU_SUPPORT)/include/am335x \
+         -v3 -O2 --printf_support=minimal --display_error_number \
+         --endian=little --hardware_mac=on
+
+LDFLAGS = -i$(PRU_CGT)/lib -i$(PRU_SUPPORT)/lib \
+          --reread_libs --warn_sections \
+          --stack_size=0x100 --heap_size=0x100
+
+# Build combined firmware (recommended - handles both strips from PRU0)
+all: am335x-pru0-fw
+
+# Combined firmware for both strips on PRU0
+am335x-pru0-fw: ws281x_combined.obj AM335x_PRU.cmd
+	$(LD) $(LDFLAGS) -o $@ $^ -m $@.map --library=libc.a
+
+# Legacy separate firmwares (for reference)
+am335x-pru0-fw-mood: ws281x_pru0.obj AM335x_PRU.cmd
+	$(LD) $(LDFLAGS) -o $@ $^ -m $@.map --library=libc.a
+
+am335x-pru1-fw-jaw: ws281x_pru1.obj AM335x_PRU.cmd
+	$(LD) $(LDFLAGS) -o $@ $^ -m $@.map --library=libc.a
+
+%.obj: %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+clean:
+	rm -f *.obj *.map am335x-pru*-fw
+
+install: am335x-pru0-fw
+	sudo cp am335x-pru0-fw /lib/firmware/
+
+.PHONY: all clean install