diff options
| author | Daniel Friesel <derf@finalrewind.org> | 2018-07-12 11:00:38 +0200 |
|---|---|---|
| committer | Daniel Friesel <derf@finalrewind.org> | 2018-07-12 11:00:38 +0200 |
| commit | c85f1aaf1356bd85dd19dbb97b8f1b87c3ed742a (patch) | |
| tree | 5734ed6ce02687f0b14bb408f079d7b8f5b34f1e /src/driver/soft_i2c.cc | |
| parent | e632d5c4a0541385c37af6ef9af3373fcc100adf (diff) | |
Add I2C Detect app
Diffstat (limited to 'src/driver/soft_i2c.cc')
| -rw-r--r-- | src/driver/soft_i2c.cc | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/driver/soft_i2c.cc b/src/driver/soft_i2c.cc index f8ee052..94ab261 100644 --- a/src/driver/soft_i2c.cc +++ b/src/driver/soft_i2c.cc @@ -20,6 +20,8 @@ void SoftI2C::start() void SoftI2C::stop() { + gpio.output(scl); + // gpio.output(sda); // gpio.input(scl); @@ -79,12 +81,13 @@ void SoftI2C::scan(unsigned int *results) unsigned char i2caddr; for (unsigned char address = 0; address < 128; address++) { - i2caddr = (address << 1) | 1; + i2caddr = (address << 1) | 0; start(); if (tx(i2caddr)) { results[address / (8 * sizeof(unsigned int))] |= 1 << (address % (8 * sizeof(unsigned int))); + stop(); } } stop(); @@ -109,7 +112,7 @@ signed char SoftI2C::xmit(unsigned char address, tx((address << 1) | 1); for (i = 1; i <= rx_len; i++) { - rx_buf[i] = rx((i < rx_len) * 1); + rx_buf[i-1] = rx((i < rx_len) * 1); } } @@ -118,4 +121,10 @@ signed char SoftI2C::xmit(unsigned char address, return 0; } +#ifdef MULTIPASS_ARCH_esp8266 +SoftI2C i2c(GPIO::d7, GPIO::d8); +#elif MULTIPASS_ARCH_arduino_nano +SoftI2C i2c(GPIO::pc5, GPIO::pc4); +#elif MULTIPASS_ARCH_msp430fr5969lp SoftI2C i2c(GPIO::p1_6, GPIO::p1_7); +#endif |