diff options
Diffstat (limited to 'libmaple/stm32f1')
| -rw-r--r-- | libmaple/stm32f1/i2c.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libmaple/stm32f1/i2c.c b/libmaple/stm32f1/i2c.c index 9ebcb40..ed0ca97 100644 --- a/libmaple/stm32f1/i2c.c +++ b/libmaple/stm32f1/i2c.c @@ -40,6 +40,22 @@ i2c_dev* const I2C1 = &i2c1; i2c_dev* const I2C2 = &i2c2; /* + * Routines + */ + +void i2c_config_gpios(const i2c_dev *dev) { + gpio_set_mode(dev->gpio_port, dev->sda_pin, GPIO_AF_OUTPUT_OD); + gpio_set_mode(dev->gpio_port, dev->scl_pin, GPIO_AF_OUTPUT_OD); +} + +void i2c_master_release_bus(const i2c_dev *dev) { + gpio_write_bit(dev->gpio_port, dev->scl_pin, 1); + gpio_write_bit(dev->gpio_port, dev->sda_pin, 1); + gpio_set_mode(dev->gpio_port, dev->scl_pin, GPIO_OUTPUT_OD); + gpio_set_mode(dev->gpio_port, dev->sda_pin, GPIO_OUTPUT_OD); +} + +/* * IRQ handlers */ |