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periphmraa: Create IndexLookup functions for GPIO, I2C, SPI, PWM

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These lookups provide the MRAA index with the Pin/Bus name as input

Signed-off-by: Vineela Tummalapalli <vineela.tummalapalli@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Vineela Tummalapalli
2017-04-06 17:38:44 -07:00
committed by Noel Eck
parent 7bc069a8fd
commit 913eaf2440
5 changed files with 209 additions and 2 deletions
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36
api/mraa/common.h
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@@ -233,6 +233,42 @@ unsigned int mraa_get_platform_pin_count(uint8_t platform_offset);
*/
char* mraa_get_pin_name(int pin);
/**
* Get pin number, board must be initialised.
*
* @param pin_name: GPIO Pin Name. Eg: IO0
* @return int of MRAA index for gpio
*/
int mraa_gpio_lookup(const char* pin_name);
/**
* Get pin number, board must be initialised.
*
* @param i2c_name: I2c Bus Name. Eg: I2C6
* @return int of MRAA index of i2c bus
*/
int mraa_i2c_lookup(const char* i2c_name);
/**
* Get pin number, board must be initialised.
*
* @param spi_name: Name of spi bus. Eg: SPI2
* @return int for MRAA index of spi bus
*/
int mraa_spi_lookup(const char* spi_name);
/**
* Get pin number, board must be initialised.
*
* @param pwm_name: Name of pwm. Eg:PWM0
* @return int of MRAA index for pwm bus
*/
int mraa_pwm_lookup(const char* pwm_name);
/**
* Get default i2c bus, board must be initialised.
*