Change architecture in library.properties and other changes

Author: Distintiva Solutions

library.properties

@@ -6,4 +6,4 @@ sentence= Arduino library for BBC micro:bit
 paragraph=This library allows to code your BBC micro:bit with Arduino or eBlock
 category=Communication
 url=http://www.distintivasolutions.com/
-architectures=nrf51
+architectures=NRF5

src/mbit.cpp

@@ -592,7 +592,7 @@ float mbit_accel(const char *coor ){
 
 
 
-void mbit_tone( int freq, int dur){
+void tone(  uint8_t  pin, int freq, unsigned long dur ){
 
   uint32_t ulPin;
   uint32_t f =TIMERFREQ/freq;
@@ -628,6 +628,11 @@ void mbit_tone( int freq, int dur){
 
 }
 
+void noTone(uint8_t _pin){
+   tone_start=0; 
+   TONE_TIMER->TASKS_STOP = 1;
+}
+
 
 
 uint8_t mbit_temp(void) {

src/mbit.h

@@ -83,7 +83,8 @@ extern bool     mbit_P2_pressed();
 
 extern uint8_t 	mbit_temp(void);
 extern uint16_t mbit_light_level(void);
-extern void     mbit_tone( int freq, int dur);
+extern void     tone(uint8_t  pin, int freq, unsigned long dur);
+extern void     noTone(uint8_t _pin);
 
 /*
 ¿?