diff options
| author | Daniel Friesel <derf@finalrewind.org> | 2018-08-07 17:30:59 +0200 |
|---|---|---|
| committer | Daniel Friesel <derf@finalrewind.org> | 2018-08-07 17:30:59 +0200 |
| commit | 55786418160429b7e974336758dd785d9feeb5fa (patch) | |
| tree | a50c2d27138da93e4a3fda503a88a6cca7eed1bb | |
| parent | 34d55c304253fde0fc113f384f619171e3cf3167 (diff) | |
SoftI2C: Support Clock Stretching
| -rw-r--r-- | src/driver/soft_i2c.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/driver/soft_i2c.cc b/src/driver/soft_i2c.cc index e7b8548..cebd8be 100644 --- a/src/driver/soft_i2c.cc +++ b/src/driver/soft_i2c.cc @@ -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 |