static int i2c_mcux_configure(struct device *dev, u32_t dev_config_raw)
{
I2C_Type *base = DEV_BASE(dev);
const struct i2c_mcux_config *config = DEV_CFG(dev);
u32_t clock_freq;
u32_t baudrate;
if (!(I2C_MODE_MASTER & dev_config_raw)) {
return -EINVAL;
}
if (I2C_ADDR_10_BITS & dev_config_raw) {
return -EINVAL;
}
switch (I2C_SPEED_GET(dev_config_raw)) {
case I2C_SPEED_STANDARD:
baudrate = KHZ(100);
break;
case I2C_SPEED_FAST:
baudrate = MHZ(1);
break;
default:
return -EINVAL;
}
clock_freq = CLOCK_GetFreq(config->clock_source);
I2C_MasterSetBaudRate(base, baudrate, clock_freq);
return 0;
}
static int i2c_mcux_configure(struct device *dev, u32_t dev_config_raw)
{
I2C_Type *base = DEV_BASE(dev);
const struct i2c_mcux_config *config = DEV_CFG(dev);
union dev_config dev_config = (union dev_config)dev_config_raw;
u32_t clock_freq;
u32_t baudrate;
if (!dev_config.bits.is_master_device) {
return -EINVAL;
}
if (dev_config.bits.use_10_bit_addr) {
return -EINVAL;
}
switch (dev_config.bits.speed) {
case I2C_SPEED_STANDARD:
baudrate = KHZ(100);
break;
case I2C_SPEED_FAST:
baudrate = MHZ(1);
break;
default:
return -EINVAL;
}
clock_freq = CLOCK_GetFreq(config->clock_source);
I2C_MasterSetBaudRate(base, baudrate, clock_freq);
return 0;
}
void I2C_MasterInit(I2C_Type *base, const i2c_master_config_t *masterConfig, uint32_t srcClock_Hz)
{
FLEXCOMM_Init(base, FLEXCOMM_PERIPH_I2C);
I2C_MasterEnable(base, masterConfig->enableMaster);
I2C_MasterSetBaudRate(base, masterConfig->baudRate_Bps, srcClock_Hz);
}
void i2c_frequency(i2c_t *obj, int hz) {
uint32_t busClock;
busClock = CLOCK_GetFreq(i2c_clocks[obj->instance]);
I2C_MasterSetBaudRate(i2c_addrs[obj->instance], hz, busClock);
}
