d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

The TWI controller automatically stops if we don't fill up with new data in

Browse Source 
time.
This commit is contained in:
Bernd Walter 2010-09-27 15:58:19 +00:00
parent 8f3ec30476
commit 974dd68e5c
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/arm/at91/at91_twi.c
View File

@ -338,7 +338,7 @@ at91_twi_transfer(device_t dev, struct iic_msg *msgs, uint32_t nmsgs)
err = EINVAL;
goto out;
}
if (len == 1)
if (len == 1 && msgs[i].flags & IIC_M_RD)
WR4(sc, TWI_CR, TWI_CR_START | TWI_CR_STOP);
else
WR4(sc, TWI_CR, TWI_CR_START);
@ -358,8 +358,6 @@ at91_twi_transfer(device_t dev, struct iic_msg *msgs, uint32_t nmsgs)
}
} else {
while (len--) {
if (len == 0 && msgs[i].len != 1)
WR4(sc, TWI_CR, TWI_CR_STOP);
if ((err = at91_twi_wait(sc, TWI_SR_TXRDY)))
goto out;
WR4(sc, TWI_THR, *buf++);