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implement i2c_free for STM family

pull/12350/head
Maciej Bocianski 2020-01-31 14:51:54 +01:00
parent 95996fb924
commit 0b634e54b4
1 changed files with 47 additions and 0 deletions
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47
targets/TARGET_STM/i2c_api.c
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@ -369,6 +369,48 @@ void i2c_init_internal(i2c_t *obj, const i2c_pinmap_t *pinmap)
#endif
}
void i2c_deinit_internal(i2c_t *obj)
{
struct i2c_s *obj_s = I2C_S(obj);
i2c_hw_reset(obj);
HAL_I2C_DeInit(&(obj_s->handle));
#if defined I2C1_BASE
if (obj_s->i2c == I2C_1) {
__HAL_RCC_I2C1_CLK_DISABLE();
}
#endif
#if defined I2C2_BASE
if (obj_s->i2c == I2C_2) {
__HAL_RCC_I2C2_CLK_DISABLE();
}
#endif
#if defined I2C3_BASE
if (obj_s->i2c == I2C_3) {
__HAL_RCC_I2C3_CLK_DISABLE();
}
#endif
#if defined I2C4_BASE
if (obj_s->i2c == I2C_4) {
__HAL_RCC_I2C4_CLK_DISABLE();
}
#endif
#if defined FMPI2C1_BASE
if (obj_s->i2c == FMPI2C_1) {
__HAL_RCC_FMPI2C1_CLK_DISABLE();
}
#endif
pin_mode(obj_s->sda, PullNone);
pin_mode(obj_s->scl, PullNone);
obj_s->sda = NC;
obj_s->scl = NC;
obj_s->i2c = (I2CName)NC;
}
#if STATIC_PINMAP_READY
#define I2C_INIT_DIRECT i2c_init_direct
void i2c_init_direct(i2c_t *obj, const i2c_pinmap_t *pinmap)
@ -396,6 +438,11 @@ void i2c_init(i2c_t *obj, PinName sda, PinName scl)
I2C_INIT_DIRECT(obj, &explicit_i2c_pinmap);
}
void i2c_free(i2c_t *obj)
{
i2c_deinit_internal(obj);
}
void i2c_frequency(i2c_t *obj, int hz)
{