Commit 55786418 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

SoftI2C: Support Clock Stretching

parent 34d55c30

src/driver/soft_i2c.cc

+3 −1
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ bool SoftI2C::tx(unsigned char byte) 
		byte <<= 1;

		//

		SCL_HIGH;

		while (!gpio.read(scl)) ;

		//

		if (i == 8) {

			if (!gpio.read(sda)) {
@@ -73,6 +74,7 @@ unsigned char SoftI2C::rx(bool send_ack) 
	for (unsigned char i = 0; i <= 8; i++) {

		//

		SCL_HIGH;

		while (!gpio.read(scl)) ;

		//

		if ((i < 8) && gpio.read(sda)) {

			byte |= 1 << (7 - i);
@@ -137,7 +139,7 @@ signed char SoftI2C::xmit(unsigned char address, 
#ifdef MULTIPASS_ARCH_esp8266

SoftI2C i2c(GPIO::d7, GPIO::d8);

#elif MULTIPASS_ARCH_arduino_nano

SoftI2C i2c(GPIO::pc5, GPIO::pc4);

SoftI2C i2c(GPIO::pc4, GPIO::pc5);

#elif MULTIPASS_ARCH_msp430fr5969lp

SoftI2C i2c(GPIO::p1_6, GPIO::p1_7);

#endif