Ejemplo n.º 1
0
static PyObject * i2c_write(PyObject *self, PyObject *args)
{
    /* parameters */
    struct as_i2c_device *aDev;
    uint8_t *aData;
    int aSize;

    int ret;

    /* Get arguments */
    if (!PyArg_ParseTuple(args, "ls#", (long *)&aDev, (unsigned char *)&aData, &aSize)) {
        PyErr_SetString(PyExc_IOError,
                        "Wrong parameters.");
        return NULL;
    }

    ret = as_i2c_write(aDev, aData, aSize);
    if (ret < 0) {
        PyErr_SetString(PyExc_IOError,
                        "Can't get slave address");
        return NULL;
    }

    return Py_BuildValue("i", ret);
}
Ejemplo n.º 2
0
static int32_t as_tcs3472_write8(struct as_tcs3472 *tcs3472, int reg,
				 unsigned char value)
{
	int ret;
	unsigned char buf[1];

	/* Set address of register to access */
	buf[0] = 0x80 | ((unsigned char)(reg & 0x1f));
	ret = as_i2c_write(tcs3472->i2c_dev, buf, 1);
	if (ret)
		return ret;

	/* write value */
	buf[0] = value;
	ret = as_i2c_write(tcs3472->i2c_dev, buf, 1);
	if (ret)
		return ret;

	return 0;
}
Ejemplo n.º 3
0
long AsI2c::write(unsigned char *aData, size_t aSize)
{
	if (mDev != NULL)
	{
		return as_i2c_write(mDev, aData, aSize);
	}
	else
	{
		std::cerr<<"AsI2c device structure not allocated"<<std::endl;
		return -1;
	}
}
Ejemplo n.º 4
0
static int32_t as_tcs3472_read8(struct as_tcs3472 *tcs3472, int reg,
				unsigned char *value)
{
	int ret;
	unsigned char buff[1];

	/* Set address of register to access */
	buff[0] = 0x80 | ((unsigned char)(reg & 0x1f));
	ret = as_i2c_write(tcs3472->i2c_dev, buff, 1);
	if (ret)
		return ret;

	/* Read it */
	ret = as_i2c_read(tcs3472->i2c_dev, buff, 1);
	if (ret)
		return ret;

	*value = *buff;
	DBG("read 0x%02x in 0x%02x\n", *value, reg);

	return 0;
}
Ejemplo n.º 5
0
static int32_t as_tcs3472_read16(struct as_tcs3472 *tcs3472, int reg,
				 unsigned short *value, int size)
{
	int ret;
	unsigned char buf[2];

	/* Set address of register to access */
	buf[0] = 0x80 | ((unsigned char)(reg & 0x1f));
	ret = as_i2c_write(tcs3472->i2c_dev, buf, 1);
	if (ret)
		return ret;

	/* Read it */
	ret = as_i2c_read(tcs3472->i2c_dev, buf, 2);
	if (ret)
		return ret;

	*value = buf[1] << 8 | buf[0];
	DBG("read 0x%02x%02x at 0x%02x\n", buf[1], buf[0], reg);

	return 0;
}