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| author | Marti Bolivar <mbolivar@leaflabs.com> | 2012-06-21 15:04:39 -0400 |
|---|---|---|
| committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-06-22 14:06:10 -0400 |
| commit | baf9dd6a8275160fdf5a4ff63efa2678f16b1cc3 (patch) | |
| tree | 1ea72208adc17873ab2287f25cc3720cf40576bf /libmaple/stm32f1 | |
| parent | f34ba402c9a39acc43828918313a30d2fbc4e186 (diff) | |
| download | librambutan-baf9dd6a8275160fdf5a4ff63efa2678f16b1cc3.tar.gz librambutan-baf9dd6a8275160fdf5a4ff63efa2678f16b1cc3.zip | |
I2C: Add i2c_config_gpios(), i2c_master_release_bus().
These are necessary to pull out some calls to gpio_set_mode().
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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 */ |