diff options
Diffstat (limited to 'cpu/at91rm9200/i2c.c')
| -rw-r--r-- | cpu/at91rm9200/i2c.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/cpu/at91rm9200/i2c.c b/cpu/at91rm9200/i2c.c index c12d2dd..34a6f51 100644 --- a/cpu/at91rm9200/i2c.c +++ b/cpu/at91rm9200/i2c.c @@ -33,7 +33,7 @@ #include <at91rm9200_i2c.h> -static int debug = 0; +/* define DEBUG */ /* * Poll the i2c status register until the specified bit is set. @@ -79,15 +79,13 @@ at91_xfer(unsigned char chip, unsigned int addr, int alen, twi->TWI_CR = AT91C_TWI_STOP; /* Wait until transfer is finished */ if (!at91_poll_status(twi, AT91C_TWI_RXRDY)) { - if (debug) - printf("at91_i2c: timeout 1\n"); + debug ("at91_i2c: timeout 1\n"); return 1; } *buf++ = twi->TWI_RHR; } if (!at91_poll_status(twi, AT91C_TWI_TXCOMP)) { - if (debug) - printf("at91_i2c: timeout 2\n"); + debug ("at91_i2c: timeout 2\n"); return 1; } } else { @@ -97,15 +95,13 @@ at91_xfer(unsigned char chip, unsigned int addr, int alen, if (!length) twi->TWI_CR = AT91C_TWI_STOP; if (!at91_poll_status(twi, AT91C_TWI_TXRDY)) { - if (debug) - printf("at91_i2c: timeout 3\n"); + debug ("at91_i2c: timeout 3\n"); return 1; } } /* Wait until transfer is finished */ if (!at91_poll_status(twi, AT91C_TWI_TXCOMP)) { - if (debug) - printf("at91_i2c: timeout 4\n"); + debug ("at91_i2c: timeout 4\n"); return 1; } } @@ -190,7 +186,7 @@ i2c_init(int speed, int slaveaddr) /* Here, CKDIV = 1 and CHDIV=CLDIV ==> CLDIV = CHDIV = 1/4*((Fmclk/FTWI) -6) */ twi->TWI_CWGR = AT91C_TWI_CKDIV1 | AT91C_TWI_CLDIV3 | (AT91C_TWI_CLDIV3 << 8); - printf("Found AT91 i2c\n"); + debug ("Found AT91 i2c\n"); return; } #endif /* CONFIG_HARD_I2C */ |