From 90227ef8d65052622d09698dc80a27cd67f4bc0a Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Wed, 30 Mar 2022 16:44:04 -0700
Subject: More example stuff

---
 Common.mk   |  2 +-
 usr/cxx.cpp | 32 ++++++++++++++++++--------------
 2 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/Common.mk b/Common.mk
index 5ca4a58..c365ba5 100644
--- a/Common.mk
+++ b/Common.mk
@@ -40,7 +40,7 @@ OBJDUMP = ${CROSS}-objdump
 QEMU = qemu-system-arm
 GDB = gdb-multiarch
 CFLAGS = -mcpu=cortex-a7 -fpic -ffreestanding -std=gnu99 -O3 -Wall -Wextra -nostdlib -Iinclude -g
-CXXFLAGS = -mcpu=cortex-a7 -fpic -ffreestanding -O3 -Wall -Wextra -nostdlib -Iinclude -g
+CXXFLAGS = -mcpu=cortex-a7 -fpic -ffreestanding -fno-exceptions -O3 -Wall -Wextra -nostdlib -Iinclude -g
 CFLAGS += -DVERSION="\"0.9z\""
 AFLAGS = -mcpu=cortex-a7 -Iinclude -g
 QFLAGS = -M raspi2b -cpu cortex-a7 -m 1G
diff --git a/usr/cxx.cpp b/usr/cxx.cpp
index 0c41cca..2240d25 100644
--- a/usr/cxx.cpp
+++ b/usr/cxx.cpp
@@ -1,24 +1,28 @@
 extern "C" {
-#include <drivers/uart.h>
+#include <graphics/lfb.h>
+#include <usr/string.h>
 };
 
-class TestClass {
+class Substation {
 	public:
-		unsigned long value;
-		TestClass(unsigned long v) {
-			value = v;
-		}
-		void increment() {
-			value++;
-		}
-		void increment(unsigned long v) {
-			value += v;
+		unsigned long temperature;
+		unsigned long critical_temperature;
+		unsigned long current_production;
+		unsigned long max_production;
+		unsigned long current_load;
+		Substation(unsigned long ct, unsigned long mp) {
+			temperature = 0;
+			current_production = 0;
+			current_load = 0;
+			critical_temperature = ct;
+			max_production = mp;
 		}
 };
 
 extern "C" void cpp_demo(unsigned long v)
 {
-	TestClass tc = TestClass(v);
-	tc.increment();
-	uart_hexn(tc.value);
+	Substation s = Substation(120000+10*v, 95000000 - 23*v);
+	char str[14];
+	char* start = ulong_to_string(s.max_production, str);
+	draw_string(0, 15, start);
 }
-- 
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