C++ (Cpp) envctrl_i2c_test_bbの例

コード例 #1

ファイル: envctrl.c プロジェクト: jhbsz/actiontec_opensource_mi424wr-rev-acd-56-0-10-14-4

/* Function Description: Send the address for write mode.  
 * Return : None.
 */
static void envctrl_i2c_write_addr(unsigned char addr)
{
	envctrl_i2c_test_bb();
	envctrl_writeb(addr, &i2c->data);

	/* Generate Start condition. */
	envctrl_writeb(OBD_SEND_START, &i2c->csr);
}

コード例 #2

/* Function Description: Send the address for write mode.  
 * Return : None.
 */
static void envctrl_i2c_write_addr(unsigned char addr)
{
	envctrl_i2c_test_bb();
	writeb(addr, i2c + PCF8584_DATA);

	/* Generate Start condition. */
	writeb(OBD_SEND_START, i2c + PCF8584_CSR);
}

コード例 #3

ファイル: envctrl.c プロジェクト: jhbsz/actiontec_opensource_mi424wr-rev-acd-56-0-10-14-4

/* Function Description: Send the address for a read access.
 * Return : 0 if not acknowledged, otherwise acknowledged.
 */
static int envctrl_i2c_read_addr(unsigned char addr)
{
	envctrl_i2c_test_bb();

	/* Load address. */
	envctrl_writeb(addr + 1, &i2c->data);

	envctrl_i2c_test_bb();

	envctrl_writeb(OBD_SEND_START, &i2c->csr);

	/* Wait for PIN. */
	envtrl_i2c_test_pin();

	/* CSR 0 means acknowledged. */
	if (!(envctrl_readb(&i2c->csr) & STATUS_LRB)) {
		return envctrl_readb(&i2c->data);
	} else {
		envctrl_writeb(OBD_SEND_STOP, &i2c->csr);
		return 0;
	}
}

コード例 #4

/* Function Description: Send the address for a read access.
 * Return : 0 if not acknowledged, otherwise acknowledged.
 */
static int envctrl_i2c_read_addr(unsigned char addr)
{
	envctrl_i2c_test_bb();

	/* Load address. */
	writeb(addr + 1, i2c + PCF8584_DATA);

	envctrl_i2c_test_bb();

	writeb(OBD_SEND_START, i2c + PCF8584_CSR);

	/* Wait for PIN. */
	envtrl_i2c_test_pin();

	/* CSR 0 means acknowledged. */
	if (!(readb(i2c + PCF8584_CSR) & STATUS_LRB)) {
		return readb(i2c + PCF8584_DATA);
	} else {
		writeb(OBD_SEND_STOP, i2c + PCF8584_CSR);
		return 0;
	}
}