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K20 - i2c open drain enabled

pull/299/head
0xc0170 2014-05-06 11:55:20 +01:00
parent cbe3a40986
commit 37b8ad8063
1 changed files with 5 additions and 0 deletions
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5
libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D5M/i2c_api.c
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@ -68,6 +68,11 @@ void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
pinmap_pinout(sda, PinMap_I2C_SDA);
pinmap_pinout(scl, PinMap_I2C_SCL);
/* enable open drain for I2C pins, only port b available */
uint32_t pin_n = (uint32_t)(sda & 0x7C) >> 2;
PORTB->PCR[pin_n] |= PORT_PCR_ODE_MASK;
pin_n = (uint32_t)(scl & 0x7C) >> 2;
PORTB->PCR[pin_n] |= PORT_PCR_ODE_MASK;
}
int i2c_start(i2c_t *obj) {