From baf9dd6a8275160fdf5a4ff63efa2678f16b1cc3 Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Thu, 21 Jun 2012 15:04:39 -0400 Subject: 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 --- libmaple/include/libmaple/i2c.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'libmaple/include') diff --git a/libmaple/include/libmaple/i2c.h b/libmaple/include/libmaple/i2c.h index 9f65f13..8ce6674 100644 --- a/libmaple/include/libmaple/i2c.h +++ b/libmaple/include/libmaple/i2c.h @@ -288,6 +288,31 @@ static inline void i2c_disable_ack(i2c_dev *dev) { dev->regs->CR1 &= ~I2C_CR1_ACK; } +/* GPIO control */ + +/** + * @brief Configure device GPIOs. + * + * Configure GPIO bits dev->sda_pin and dev->scl_pin on GPIO device + * dev->gpio_port for use with I2C device dev. + * + * @param dev I2C Device + * @see i2c_release_gpios() + */ +extern void i2c_config_gpios(const i2c_dev *dev); + +/** + * @brief Release GPIOs controlling an I2C bus + * + * Releases the I2C bus controlled by dev as master, and disconnects + * GPIO bits dev->sda_pin and dev->scl_pin on GPIO device + * dev->gpio_port from I2C device dev. + * + * @param dev I2C device + * @see i2c_config_gpios() + */ +extern void i2c_master_release_bus(const i2c_dev *dev); + /* Miscellaneous low-level routines */ void i2c_init(i2c_dev *dev); -- cgit v1.2.3