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allow i2c address 0x01-0x7F

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ignore responses if the sensor is in command mode
This commit is contained in:
kardel 2014-06-29 09:52:43 +00:00
parent d70c01ba15
commit f4fb489c95
1 changed files with 12 additions and 9 deletions
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21
sys/dev/i2c/hytp14.c
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@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hytp14.c,v 1.1 2014/05/18 11:46:23 kardel Exp $");
__KERNEL_RCSID(0, "$NetBSD: hytp14.c,v 1.2 2014/06/29 09:52:43 kardel Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -98,8 +98,8 @@ hytp14_match(device_t parent, cfdata_t match, void *aux)
if (strcmp(ia->ia_name, "hythygtemp") == 0)
return 1;
} else {
/* indirect config - check typical address */
if (ia->ia_addr == HYTP14_DEFAULT_ADDR)
/* indirect config - check for configured address */
if ((ia->ia_addr > 0) && (ia->ia_addr <= 0x7F))
return 1;
}
return 0;
@ -189,15 +189,17 @@ hytp14_refresh_sensor(struct hytp14_sc *sc)
/* send MR command */
/* avoid quick read/write by providing a result buffer */
if ((error = iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_addr, NULL, 0, buf, sizeof buf, 0)) == 0) {
error = iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_addr, NULL, 0, buf, sizeof buf, 0);
if (error == 0) {
DPRINTF(3, ("hytp14_refresh_sensor(%s): MR sent\n",
device_xname(sc->sc_dev)));
/* send DF command - read data from sensor */
if ((error = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, NULL, 0, sc->sc_data,
sizeof sc->sc_data, 0)) != 0) {
error = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, NULL, 0, sc->sc_data,
sizeof sc->sc_data, 0);
if (error != 0) {
DPRINTF(2, ("%s: %s: failed read from 0x%02x - error %d\n",
device_xname(sc->sc_dev),
__func__, sc->sc_addr, error));
@ -224,7 +226,8 @@ hytp14_refresh_sensor(struct hytp14_sc *sc)
sc->sc_refresh = hardclock_ticks;
if (error == 0) {
/* skip data if sensor is in command mode */
if (error == 0 && (sc->sc_data[0] & HYTP14_RESP_CMDMODE) == 0) {
sc->sc_valid = ENVSYS_SVALID;
} else {
sc->sc_valid = ENVSYS_SINVALID;