Add basic uptime getter, improve loop support

Makefile

@@ -7,7 +7,7 @@ CXXFLAGS = -std=c++14
 
 TARGETS = src/os/main.cc src/os/object/cpp_helpers.cc src/os/object/outputstream.cc
 
-ifeq (${arduino}, 1)
+ifeq (${loop}, 1)
 	COMMON_FLAGS += -DWITH_LOOP
 endif
 

include/esp8266/driver/uptime.h

+#ifndef UPTIME_H
+#define UPTIME_H
+
+#include "c_types.h"
+
+class Uptime {
+	private:
+		Uptime(const Uptime &copy);
+
+	public:
+		Uptime () {}
+		uint32_t get();
+};
+
+extern Uptime uptime;
+
+#endif

include/msp430fr5969lp/driver/uptime.h

+#ifndef UPTIME_H
+#define UPTIME_H
+
+#include <stdint.h>
+
+class Uptime {
+	private:
+		Uptime(const Uptime &copy);
+
+	public:
+		Uptime () {}
+		uint32_t get();
+};
+
+extern Uptime uptime;
+
+#endif

include/posix/driver/uptime.h

+#ifndef UPTIME_H
+#define UPTIME_H
+
+#include <stdint.h>
+
+class Uptime {
+	private:
+		Uptime(const Uptime &copy);
+
+	public:
+		Uptime () {}
+		uint64_t get();
+};
+
+extern Uptime uptime;
+
+#endif

src/arch/esp8266/Makefile.inc

@@ -17,7 +17,7 @@ CXXFLAGS = -std=c++11
 LDFLAGS += -nostdlib -Wl,--no-check-sections -u call_user_start -Wl,-static
 
 TARGETS += src/arch/esp8266/arch.cc src/arch/esp8266/driver/gpio.cc
-TARGETS += src/arch/esp8266/driver/stdout.cc
+TARGETS += src/arch/esp8266/driver/stdout.cc src/arch/esp8266/driver/uptime.cc
 
 OBJECTS = ${TARGETS:.cc=.o}
 

src/arch/esp8266/driver/uptime.cc

+#include "driver/uptime.h"
+extern "C" {
+#include "osapi.h"
+#include "user_interface.h"
+}
+
+uint32_t Uptime::get()
+{
+	return system_get_time();
+}
+
+Uptime uptime;

src/arch/msp430fr5969lp/Makefile.inc

@@ -11,7 +11,7 @@ CXX = /opt/msp430/ti/gcc/bin/msp430-elf-g++
 OBJCOPY = /opt/msp430/ti/gcc/bin/msp430-elf-objcopy
 
 TARGETS += src/arch/msp430fr5969lp/arch.cc src/arch/msp430fr5969lp/driver/gpio.cc
-TARGETS += src/arch/msp430fr5969lp/driver/stdout.cc
+TARGETS += src/arch/msp430fr5969lp/driver/stdout.cc src/arch/msp430fr5969lp/driver/uptime.cc
 
 OBJECTS = ${TARGETS:.cc=.o}
 

src/arch/msp430fr5969lp/arch.cc

@@ -16,10 +16,16 @@ void Arch::setup(void)
 	// 16MHz DCO
 	CSCTL0_H = CSKEY >> 8;
 	CSCTL1 = DCORSEL | DCOFSEL_4;
+#ifdef WITH_LOOP
+	CSCTL2 = SELA__LFXTCLK | SELS__DCOCLK | SELM__DCOCLK;
+#else
 	CSCTL2 = SELA__VLOCLK | SELS__DCOCLK | SELM__DCOCLK;
+#endif
 	CSCTL3 = DIVA__1 | DIVS__1 | DIVM__1;
 	CSCTL0_H = 0;
 
+
+#ifdef WITH_LOOP
 	// enable LXFT for RTC
 	CSCTL0_H = CSKEY >> 8;
 	CSCTL4 &= ~LFXTOFF;
@@ -30,17 +36,46 @@ void Arch::setup(void)
 	CSCTL0_H = 0;
 
 	__delay_cycles(1000000);
+#endif
+
+	// 16MHz/16 -> ~1MHz timer
+	TA0CTL = TASSEL__SMCLK | ID__8 | MC__CONTINUOUS;
+	TA0EX0 = 1;
+	TA0CTL |= TACLR;
+
+#ifdef WITH_LOOP
+
+	// 1s per wakeup for loop
+	TA1CTL = TASSEL__ACLK | ID__8 | MC__UP;
+	TA1EX0 = 0;
+	TA1CCR0 = 4096;
+	TA1CTL |= TACLR | TAIE;
+#endif
+
 	//P1OUT = 0;
 	//P4OUT = 0;
 }
 
 void Arch::idle_loop(void)
 {
+	__eint();
 	while (1);
 }
 
 Arch arch;
 
+#ifdef WITH_LOOP
+
+extern void loop();
+
+__attribute__((interrupt(TIMER1_A1_VECTOR))) __attribute__((wakeup)) void handle_timer0_overflow()
+{
+	if (TA1IV == 0x0e) {
+		loop();
+	}
+}
+
+#endif
 /*
 void uart_setup(void)
 {

src/arch/msp430fr5969lp/driver/uptime.cc

+#include "driver/uptime.h"
+#include <msp430.h>
+
+uint32_t Uptime::get()
+{
+	return TA0R;
+}
+
+Uptime uptime;

src/arch/posix/Makefile.inc

@@ -5,7 +5,7 @@ CXX = g++
 
 INCLUDES += -Iinclude/posix
 TARGETS += src/arch/posix/arch.cc src/arch/posix/driver/gpio.cc
-TARGETS += src/arch/posix/driver/stdout.cc
+TARGETS += src/arch/posix/driver/stdout.cc src/arch/posix/driver/uptime.cc
 
 OBJECTS = ${TARGETS:.cc=.o}
 

src/arch/posix/driver/uptime.cc

+#include "driver/uptime.h"
+#include <time.h>
+
+uint64_t Uptime::get()
+{
+	struct timespec ts;
+	clock_gettime(CLOCK_REALTIME, &ts);
+	return (uint64_t)ts.tv_nsec + (1000000ULL * ((uint64_t)ts.tv_sec % 256));
+}
+
+Uptime uptime;

src/os/main.cc

 #include "arch.h"
 #include "driver/gpio.h"
 #include "driver/stdout.h"
+#include "driver/uptime.h"
 
 /*
 void check_command(unsigned char argc, char** argv)
@@ -88,6 +89,7 @@ void check_command(unsigned char argc, char** argv)
 void loop(void)
 {
 	gpio.led_toggle(1);
+	kout << dec << uptime.get() << endl;
 }
 
 int main(void)
@@ -99,6 +101,10 @@ int main(void)
 	gpio.led_on(0);
 	kout << "Hello, World!" << endl;
 	kout << "Test, World!" << endl;
+	kout << dec << uptime.get() << endl;
+	kout << dec << uptime.get() << endl;
+	kout << dec << uptime.get() << endl;
+	kout << dec << uptime.get() << endl;
 
 	arch.idle_loop();