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[LPC824] I2C ROMAPI/bitrate related fix 

- I2C did not work as ROMAPI initialization override CFG register settings at i2c_init()
- i2c_frequency() ignored bitrate settings
pull/604/head
K4zuki 2014-10-26 17:38:14 +09:00
parent 2fe9871855
commit f39ea2e5cd
1 changed files with 3 additions and 2 deletions
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5
libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC82X/i2c_api.c
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@ -151,13 +151,14 @@ void i2c_init(i2c_t *obj, PinName sda, PinName scl)
// enable power
i2c_power_enable(i2c_ch);
i2c_interface_enable(obj);
uint32_t size_in_bytes = LPC_I2CD_API->i2c_get_mem_size();
i2c_buffer = malloc(size_in_bytes);
obj->handler = LPC_I2CD_API->i2c_setup((uint32_t)(obj->i2c), i2c_buffer);
LPC_I2CD_API->i2c_set_bitrate(obj->handler, SystemCoreClock, 100000);
LPC_I2CD_API->i2c_set_timeout(obj->handler, 100000);
i2c_interface_enable(obj);
}
inline int i2c_start(i2c_t *obj)
@ -211,7 +212,7 @@ static inline int i2c_do_read(i2c_t *obj, int last)
void i2c_frequency(i2c_t *obj, int hz)
{
LPC_I2CD_API->i2c_set_bitrate(obj->handler, SystemCoreClock, 100000);
LPC_I2CD_API->i2c_set_bitrate(obj->handler, SystemCoreClock, hz);
}
int i2c_read(i2c_t *obj, int address, char *data, int length, int stop)