aboutsummaryrefslogtreecommitdiff
path: root/cpu/mpc824x/drivers/i2c/i2c1.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpu/mpc824x/drivers/i2c/i2c1.c')
-rw-r--r--cpu/mpc824x/drivers/i2c/i2c1.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/cpu/mpc824x/drivers/i2c/i2c1.c b/cpu/mpc824x/drivers/i2c/i2c1.c
index dc1c97ca0..94c671e56 100644
--- a/cpu/mpc824x/drivers/i2c/i2c1.c
+++ b/cpu/mpc824x/drivers/i2c/i2c1.c
@@ -1197,13 +1197,16 @@ int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
uchar *p;
int i;
- p = dummy_buffer;
/* fill in address in big endian order */
- for (i=0; i<alen; ++i)
- *p++ = (addr >> (i * 8)) & 0xFF;
+ for (i=alen-1; i>=0; --i) {
+ buffer[i] = addr & 0xFF;
+ addr >>= 8;
+ }
/* fill in data */
+ p = dummy_buffer + alen;
+
for (i=0; i<len; ++i)
- *p++ = *buffer;
+ *p++ = *buffer++;
status = I2C_do_buffer (0, I2C_MASTER_XMIT, chip, alen + len,
dummy_buffer, I2C_STOP, 1, I2C_NO_RESTART);