From 9a643171a633db45205f50b64490cfc012976e55 Mon Sep 17 00:00:00 2001
From: Stephen Crane <jscrane@gmail.com>
Date: Sun, 11 Nov 2018 11:21:12 +0000
Subject: [PATCH] esp8266 timer_create

---
 timed.cpp | 18 +++++++++++++++---
 timed.h   |  4 +++-
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/timed.cpp b/timed.cpp
index cae7409..0fe2131 100644
--- a/timed.cpp
+++ b/timed.cpp
@@ -5,19 +5,24 @@
 #include <driverlib/interrupt.h>
 #include <driverlib/sysctl.h>
 #include <driverlib/timer.h>
+
+#elif defined(ESP8266)
+#include <ets_sys.h>
+#include <osapi.h>
+#include <os_type.h>
 #endif
 
 #include "timed.h"
 
 #if defined(__LM4F120H5QR__)
-static void (*client_handler)(void);
+static handler_t client_handler;
 
 static void timer0isr(void) {
 	ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
 	client_handler();
 }
 
-void timer_create(unsigned freq, void (*handler)(void)) {
+void timer_create(unsigned freq, handler_t handler) {
 	client_handler = handler;
 	ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
 	ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
@@ -29,10 +34,17 @@ void timer_create(unsigned freq, void (*handler)(void)) {
 }
 #elif defined(ESP_PLATFORM)
 
-void timer_create(unsigned freq, void (*handler)(void)) {
+void timer_create(unsigned freq, handler_t handler) {
 	hw_timer_t *timer = timerBegin(3, 80, true);	// prescaler of 80
 	timerAttachInterrupt(timer, handler, true);
 	timerAlarmWrite(timer, 1000000 / freq, true);
 	timerAlarmEnable(timer);
 }
+#elif defined(ESP8266)
+
+void timer_create(unsigned freq, handler_t handler) {
+	static os_timer_t t;
+	os_timer_setfn(&t, (os_timer_func_t *)handler, 0);
+	os_timer_arm(&t, 1000 / freq, true);
+}
 #endif
diff --git a/timed.h b/timed.h
index 7059e4d..1d73720 100644
--- a/timed.h
+++ b/timed.h
@@ -1,6 +1,8 @@
 #ifndef __TIMED_H__
 #define __TIMED_H__
 
-void timer_create(unsigned freq, void (*handler)(void));
+typedef void (*handler_t)(void);
+
+void timer_create(unsigned freq, handler_t handler);
 
 #endif