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SiLabs Pearl: Fix I2C pin routing 

Use new ROUTEPEN/ROUTELOC0 registers for selecting I2C pins.
pull/1501/head
Mikko Polojarvi 2015-10-14 14:33:31 +03:00 committed by Steven Cooreman
parent 4990751ace
commit 21a242049f
1 changed files with 6 additions and 0 deletions
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6
libraries/mbed/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/i2c_api.c
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@ -129,8 +129,14 @@ void i2c_init(i2c_t *obj, PinName sda, PinName scl)
I2C_Init(obj->i2c.i2c, &i2cInit); I2C_Init(obj->i2c.i2c, &i2cInit);
/* Enable pins at correct location */ /* Enable pins at correct location */
#ifdef I2C_ROUTE_SDAPEN
obj->i2c.i2c->ROUTE = I2C_ROUTE_SDAPEN | I2C_ROUTE_SCLPEN | (obj->i2c.loc << _I2C_ROUTE_LOCATION_SHIFT); obj->i2c.i2c->ROUTE = I2C_ROUTE_SDAPEN | I2C_ROUTE_SCLPEN | (obj->i2c.loc << _I2C_ROUTE_LOCATION_SHIFT);
i2c_enable_pins(obj, true); i2c_enable_pins(obj, true);
#else
obj->i2c.i2c->ROUTEPEN = I2C_ROUTEPEN_SDAPEN | I2C_ROUTEPEN_SCLPEN;
obj->i2c.i2c->ROUTELOC0 = (pin_location(obj->i2c.sda, PinMap_I2C_SDA) << _I2C_ROUTELOC0_SDALOC_SHIFT) |
(pin_location(obj->i2c.scl, PinMap_I2C_SCL) << _I2C_ROUTELOC0_SCLLOC_SHIFT);
#endif
/* Enable General Call Address Mode. That is; we respond to the general address (0x0) */ /* Enable General Call Address Mode. That is; we respond to the general address (0x0) */
obj->i2c.i2c->CTRL |= _I2C_CTRL_GCAMEN_MASK; obj->i2c.i2c->CTRL |= _I2C_CTRL_GCAMEN_MASK;