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Recorder modifications

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1071 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-06-19 12:00:37 +00:00
parent 2bfa0473c3
commit 9d937e9c23
1 changed files with 5 additions and 2 deletions
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5
firmware/drivers/i2c.c
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@ -112,9 +112,10 @@ int i2c_getack(void)
low until it is ready. We need to poll the clock line until it goes low until it is ready. We need to poll the clock line until it goes
high before we read the ack. */ high before we read the ack. */
#ifndef ARCHOS_RECORDER
SDA_LO; /* First, discharge the data line */ SDA_LO; /* First, discharge the data line */
#endif
SDA_INPUT; /* And set to input */ SDA_INPUT; /* And set to input */
SCL_LO; /* Set the clock low */
SCL_INPUT; /* Set the clock to input */ SCL_INPUT; /* Set the clock to input */
while(!SCL) /* and wait for the MAS to release it */ while(!SCL) /* and wait for the MAS to release it */
yield(); yield();
@ -154,9 +155,11 @@ unsigned char i2c_inb(int ack)
/* clock in each bit, MSB first */ /* clock in each bit, MSB first */
for ( i=0x80; i; i>>=1 ) { for ( i=0x80; i; i>>=1 ) {
#ifndef ARCHOS_RECORDER
/* Tricky business. Here we discharge the data line by driving it low /* Tricky business. Here we discharge the data line by driving it low
and then set it to input to see if it stays low or goes high */ and then set it to input to see if it stays low or goes high */
SDA_LO; /* First, discharge the data line */ SDA_LO; /* First, discharge the data line */
#endif
SDA_INPUT; /* And set to input */ SDA_INPUT; /* And set to input */
SCL_HI; SCL_HI;
if ( SDA ) if ( SDA )