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drivers/si70xx: check connection during init()

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This commit is contained in:
Hauke Petersen 2017-01-17 11:47:37 +01:00
parent b24be6a6ae
commit 5f30c7a593
1 changed files with 8 additions and 2 deletions
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10
drivers/si70xx/si70xx.c
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@ -65,18 +65,24 @@ int si70xx_init(si70xx_t *dev, i2c_t i2c_dev, uint8_t address)
/* setup the i2c bus */ /* setup the i2c bus */
i2c_acquire(dev->i2c_dev); i2c_acquire(dev->i2c_dev);
int result = i2c_init_master(dev->i2c_dev, I2C_SPEED_NORMAL); int result = i2c_init_master(dev->i2c_dev, I2C_SPEED_NORMAL);
i2c_release(dev->i2c_dev);
if (result != 0) { if (result != 0) {
i2c_release(dev->i2c_dev); return result;
}
result = si70xx_test(dev);
if (result < 0) {
return result; return result;
} }
/* initialize the peripheral */ /* initialize the peripheral */
i2c_acquire(dev->i2c_dev);
i2c_write_byte(dev->i2c_dev, dev->address, SI70XX_RESET); i2c_write_byte(dev->i2c_dev, dev->address, SI70XX_RESET);
i2c_release(dev->i2c_dev);
/* sensor is ready after at most 25 ms */ /* sensor is ready after at most 25 ms */
xtimer_usleep(25 * MS_IN_USEC); xtimer_usleep(25 * MS_IN_USEC);
i2c_release(dev->i2c_dev);
return 0; return 0;
} }