diff options
Diffstat (limited to 'stmhal/i2c.c')
| -rw-r--r-- | stmhal/i2c.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/stmhal/i2c.c b/stmhal/i2c.c index 0af2232143..9b7ec4dabd 100644 --- a/stmhal/i2c.c +++ b/stmhal/i2c.c @@ -203,12 +203,6 @@ void i2c_init0(void) { } void i2c_init(I2C_HandleTypeDef *i2c) { - // init the GPIO lines - GPIO_InitTypeDef GPIO_InitStructure; - GPIO_InitStructure.Mode = GPIO_MODE_AF_OD; - GPIO_InitStructure.Speed = GPIO_SPEED_FAST; - GPIO_InitStructure.Pull = GPIO_NOPULL; // have external pull-up resistors on both lines - int i2c_unit; const pin_obj_t *scl_pin; const pin_obj_t *sda_pin; @@ -241,8 +235,10 @@ void i2c_init(I2C_HandleTypeDef *i2c) { } // init the GPIO lines - mp_hal_pin_set_af(scl_pin, &GPIO_InitStructure, AF_FN_I2C, i2c_unit); - mp_hal_pin_set_af(sda_pin, &GPIO_InitStructure, AF_FN_I2C, i2c_unit); + uint32_t mode = MP_HAL_PIN_MODE_ALT_OPEN_DRAIN; + uint32_t pull = MP_HAL_PIN_PULL_NONE; // have external pull-up resistors on both lines + mp_hal_pin_config_alt(scl_pin, mode, pull, AF_FN_I2C, i2c_unit); + mp_hal_pin_config_alt(sda_pin, mode, pull, AF_FN_I2C, i2c_unit); // init the I2C device if (HAL_I2C_Init(i2c) != HAL_OK) { |