diff options
Diffstat (limited to 'src/atsamd/i2c.c')
| -rw-r--r-- | src/atsamd/i2c.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/atsamd/i2c.c b/src/atsamd/i2c.c index 71376322..57374443 100644 --- a/src/atsamd/i2c.c +++ b/src/atsamd/i2c.c @@ -4,7 +4,6 @@ // // This file may be distributed under the terms of the GNU GPLv3 license. -#include "autoconf.h" // CONFIG_CLOCK_FREQ #include "internal.h" // enable_pclock #include "command.h" // shutdown #include "gpio.h" // i2c_setup @@ -38,8 +37,8 @@ i2c_init(void) | SERCOM_I2CM_STATUS_MEXTTOUT | SERCOM_I2CM_CTRLA_MODE_I2C_MASTER); si->CTRLA.reg = areg; - uint32_t baud = (CONFIG_CLOCK_FREQ / I2C_FREQ - - 10 - CONFIG_CLOCK_FREQ*TIME_RISE/1000000000) / 2; + uint32_t freq = get_pclock_frequency(SERCOM3_GCLK_ID_CORE); + uint32_t baud = (freq/I2C_FREQ - 10 - freq*TIME_RISE/1000000000) / 2; si->BAUD.reg = baud; si->CTRLA.reg = areg | SERCOM_I2CM_CTRLA_ENABLE; while (si->SYNCBUSY.reg & SERCOM_I2CM_SYNCBUSY_ENABLE) |