Commit 61ff5bbb authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

softi2c: Work around MSP430 timing issues with softi2c_timer=1

parent 3e884d67

src/driver/soft_i2c.cc

+10 −0
Original line number Diff line number Diff line
@@ -176,6 +176,15 @@ signed char SoftI2C::xmit(unsigned char address, 


volatile unsigned char timer_done = 0;



/*

 * Note: On MSP430, if F_CPU / F_I2C < 60 (approx.), await_timer() does not

 * work.  Probably related to missed interrupts / not enough cycles between

 * start and idle?  We work around this for now by simulating an immediate

 * return in these cases.

 */

#if MULTIPASS_ARCH_msp430fr5969lp && ((F_CPU / F_I2C) < 60)

inline void await_timer() {}

#else

inline void await_timer()

{

	timer_done = 0;
@@ -185,6 +194,7 @@ inline void await_timer() 
	}

	timer.stop();

}

#endif



signed char SoftI2C::setup()

{