diff options
Diffstat (limited to 'commandline/i2c-util.c')
| -rw-r--r-- | commandline/i2c-util.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/commandline/i2c-util.c b/commandline/i2c-util.c index 2771a4e..44ea4d3 100644 --- a/commandline/i2c-util.c +++ b/commandline/i2c-util.c @@ -267,17 +267,21 @@ unsigned char i2c_tx_byte(unsigned char byte) return ack; } -unsigned char i2c_rx_byte() +unsigned char i2c_rx_byte(unsigned char send_ack) { signed char i; unsigned char ret = 0; set_sda(1); for (i = 7; i >= -1; i--) { + if (( i < 0) && send_ack) + set_sda(0); set_scl(1); usleep(10); if ((i >= 0) && ( get_status() & (1 << BIT_SDA))) ret |= (1 << i); + if (( i < 0) && send_ack) + set_sda(1); set_scl(0); usleep(10); } |