3 files changed, 150 insertions, 0 deletions
diff --git a/c/phb/Makefile b/c/phb/Makefile
new file mode 100644
index 0000000..dd42b2d
--- /dev/null
+++ b/c/phb/Makefile
@@ -0,0 +1,31 @@
+CC ?= clang
+CFLAGS_MARCH ?= -march=rv32imacb_zicntr_zicond_zicsr_zifencei_zihintpause_zilsd_zclsd_zabha_zacas_zbkb_zbkx_zcb_zcmp_zcmt
+CFLAGS_OPT ?= -O3
+CFLAGS ?= ${CFLAGS_MARCH} ${CFLAGS_OPT}
+
+ifeq (${CC}, clang)
+	CC := ${CC} -target riscv32-none-elf
+endif
+
+.PHONY: all dump load clean
+
+all: phb.hex
+
+phb.o: phb.c
+	clang -target riscv32-none-elf -I../rvcontroller-libraries -march=rv32imacb_zicntr_zicond_zicsr_zifencei_zihintpause_zilsd_zclsd_zabha_zacas_zbkb_zbkx_zcb_zcmp_zcmt -ffreestanding -O3 -c -DRRXING_DE -o phb.o phb.c
+
+phb.elf: ../rvcontroller-libraries/rvcontroller-init.o ../rvcontroller-libraries/rvcontroller-ecalls.o phb.o
+	clang -target riscv32-none-elf -T rvcontroller.ld -nostdlib -nostartfiles -Xlinker --no-warn-rwx-segments -o phb.elf ../rvcontroller-libraries/rvcontroller-init.o phb.o ../rvcontroller-libraries/rvcontroller-ecalls.o
+
+dump: phb.elf
+	riscv32-none-elf-objdump -d phb.elf
+
+phb.hex: phb.elf
+	riscv32-none-elf-objcopy -O ihex phb.elf phb.hex
+
+load: phb.hex
+	bash -c "wl-copy < phb.hex"
+
+clean:
+	rm -f phb.hex phb.elf phb.o init.o
+
diff --git a/c/phb/phb.c b/c/phb/phb.c
new file mode 100644
index 0000000..6f85d09
--- /dev/null
+++ b/c/phb/phb.c
@@ -0,0 +1,74 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include "rvcontroller-ecalls.h"
+
+bool streq(char *a, char *b) {
+	for (int i=0;a[i] != 0 || b[i] != 0;i++) {
+		if (a[i] != b[i]) {
+			return false;
+		}
+	}
+	return true;
+}
+
+void sleep(uint32_t delay) {
+	//This will start having problems after about 130 years
+	//of uptime, but that's probably acceptable
+	uint32_t endtime = rdtime() + delay;
+	while (rdtime() < endtime) {}
+	return;
+}
+
+bool checkdetector(void) {
+	char channelbuf[16];
+	char msgbuf[16];
+	while (digiline_bufferlevel() > 0) {
+		lightweight_mode(0);
+		digiline_receive(channelbuf,16,msgbuf,16);
+		if (streq(channelbuf,"detect")) {
+			return true;
+		}
+	}
+	lightweight_mode(1);
+	return false;
+}
+
+void main() {
+	printstr("Ped Hybrid Beacon\n");
+	printstr("for RVController\nInitializing HW\n");
+	digiline_send("beacon","OFF");
+	digiline_send("ped","RED");
+	digiline_clearbuffer();
+	while (true) {
+		printstr("Idle\n");
+		lightweight_mode(1);
+		printstr("Lightweight: On\n");
+		while (!checkdetector()) {}
+		printstr("Ped detected\nLightweight: Off\n");
+		lightweight_mode(0);
+		printstr("Beacon: Flash Yellow\n");
+		digiline_send("beacon","FLASHYELLOW");
+		sleep(3);
+		printstr("Beacon: Yellow\n");
+		digiline_send("beacon","YELLOW");
+		sleep(5);
+		printstr("Beacon: Red\n");
+		digiline_send("beacon","RED");
+		sleep(1);
+		printstr("Ped: Walk\n");
+		digiline_send("ped","GREEN");
+		sleep(7);
+		digiline_clearbuffer();
+		printstr("Ped: Flash DW\n");
+		digiline_send("ped","FLASHRED");
+		printstr("Beacon: Flash Red\n");
+		digiline_send("beacon","FLASHRED");
+		sleep(15);
+		printstr("Ped: Don't Walk\n");
+		digiline_send("ped","RED");
+		sleep(1);
+		printstr("Beacon: Off\n");
+		digiline_send("beacon","OFF");
+		sleep(15);
+	}
+}
diff --git a/c/phb/rvcontroller.ld b/c/phb/rvcontroller.ld
new file mode 100644
index 0000000..985892b
--- /dev/null
+++ b/c/phb/rvcontroller.ld
@@ -0,0 +1,45 @@
+/* Thanks https://github.com/darklife/darkriscv */
+  __heap_size    = 0x200;  /* required amount of heap */
+  __stack_size  = 0x800;  /* required amount of stack */
+  ENTRY(_start);
+  MEMORY
+  {
+    RAM (rwx) : ORIGIN = 0x00000000, LENGTH = 0x10000
+  }
+  SECTIONS
+  {
+    .text :
+    {
+      *(.text.startup)
+      *(.text)
+      *(.text)
+      *(.rodata*)
+    } > RAM
+    .data :
+    {
+      *(.sbss)
+      *(.data)
+      *(.bss)
+      *(.rela*)
+      *(COMMON)
+    } > RAM
+
+    .heap :
+    {
+      . = ALIGN(4);
+      PROVIDE ( end = . );
+      _sheap = .;
+      . = . + __heap_size;
+      . = ALIGN(4);
+      _eheap = .;
+    } >RAM
+
+    .stack :
+    {
+      . = ALIGN(4);
+      _estack = .;
+      . = . + __stack_size;
+      . = ALIGN(4);
+      _sstack = .;
+    } >RAM
+  }