typedef unsigned int mraa_boolean_t;
/**
- * A bitfield representing the capabilities of a pin.
- */
-typedef struct {
- /*@{*/
- mraa_boolean_t valid:1; /**< Is the pin valid at all */
- mraa_boolean_t gpio:1; /**< Is the pin gpio capable */
- mraa_boolean_t pwm:1; /**< Is the pin pwm capable */
- mraa_boolean_t fast_gpio:1; /**< Is the pin fast gpio capable */
- mraa_boolean_t spi:1; /**< Is the pin spi capable */
- mraa_boolean_t i2c:1; /**< Is the pin i2c capable */
- mraa_boolean_t aio:1; /**< Is the pin analog input capable */
- mraa_boolean_t uart:1; /**< Is the pin uart capable */
- /*@}*/
-} mraa_pincapabilities_t;
-
-/**
- * A Structure representing a multiplexer and the required value
- */
-typedef struct {
- /*@{*/
- unsigned int pin; /**< Raw GPIO pin id */
- unsigned int value; /**< Raw GPIO value */
- /*@}*/
-} mraa_mux_t;
-
-typedef struct {
- mraa_boolean_t complex_pin:1;
- mraa_boolean_t output_en:1;
- mraa_boolean_t output_en_high:1;
- mraa_boolean_t pullup_en:1;
- mraa_boolean_t pullup_en_hiz:1;
-} mraa_pin_cap_complex_t;
-
-typedef struct {
- /*@{*/
- unsigned int pinmap; /**< sysfs pin */
- unsigned int parent_id; /** parent chip id */
- unsigned int mux_total; /** Numfer of muxes needed for operation of pin */
- mraa_mux_t mux[6]; /** Array holding information about mux */
- unsigned int output_enable; /** Output Enable GPIO, for level shifting */
- unsigned int pullup_enable; /** Pull-Up enable GPIO, inputs */
- mraa_pin_cap_complex_t complex_cap;
- /*@}*/
-} mraa_pin_t;
-
-typedef struct {
- /*@{*/
- char mem_dev[32]; /**< Memory device to use /dev/uio0 etc */
- unsigned int mem_sz; /** Size of memory to map */
- unsigned int bit_pos; /** Position of value bit */
- mraa_pin_t gpio; /** GPio context containing none mmap info */
- /*@}*/
-} mraa_mmap_pin_t;
-
-/**
- * A Structure representing a physical Pin.
- */
-typedef struct {
- /*@{*/
- char name[8]; /**< Pin's real world name */
- mraa_pincapabilities_t capabilites; /**< Pin Capabiliites */
- mraa_pin_t gpio; /**< GPIO structure */
- mraa_pin_t pwm; /**< PWM structure */
- mraa_pin_t aio; /**< Anaglog Pin */
- mraa_mmap_pin_t mmap; /**< GPIO through memory */
- mraa_pin_t i2c; /**< i2c bus/pin */
- mraa_pin_t spi; /**< spi bus/pin */
- mraa_pin_t uart; /**< uart module/pin */
- /*@}*/
-} mraa_pininfo_t;
-
-/**
- * A Structure representing the physical properties of a i2c bus.
- */
-typedef struct {
- /*@{*/
- unsigned int bus_id; /**< ID as exposed in the system */
- unsigned int scl; /**< i2c SCL */
- unsigned int sda; /**< i2c SDA */
- /*@}*/
-} mraa_i2c_bus_t;
-
-/**
- * A Structure representing the physical properties of a spi bus.
- */
-typedef struct {
- /*@{*/
- unsigned int bus_id; /**< The Bus ID as exposed to the system. */
- unsigned int slave_s; /**< Slave select */
- mraa_boolean_t three_wire; /**< Is the bus only a three wire system */
- unsigned int sclk; /**< Serial Clock */
- unsigned int mosi; /**< Master Out, Slave In. */
- unsigned int miso; /**< Master In, Slave Out. */
- unsigned int cs; /**< Chip Select, used when the board is a spi slave */
- /*@}*/
-} mraa_spi_bus_t;
-
-/**
- * A Structure representing a uart device.
- */
-typedef struct {
- /*@{*/
- unsigned int index; /**< ID as exposed in the system */
- int rx; /**< uart rx */
- int tx; /**< uart tx */
- const char* device_path; /**< To store "/dev/ttyS1" for example */
- /*@}*/
-} mraa_uart_dev_t;
-
-/**
- * A Structure representing a platform/board.
- */
-typedef struct {
- /*@{*/
- unsigned int phy_pin_count; /**< The Total IO pins on board */
- unsigned int gpio_count; /**< GPIO Count */
- unsigned int aio_count; /**< Analog side Count */
- unsigned int i2c_bus_count; /**< Usable i2c Count */
- mraa_i2c_bus_t i2c_bus[12]; /**< Array of i2c */
- unsigned int def_i2c_bus; /**< Position in array of default i2c bus */
- unsigned int spi_bus_count; /**< Usable spi Count */
- mraa_spi_bus_t spi_bus[12]; /**< Array of spi */
- unsigned int def_spi_bus; /**< Position in array of defult spi bus */
- unsigned int adc_raw; /**< ADC raw bit value */
- unsigned int adc_supported; /**< ADC supported bit value */
- unsigned int def_uart_dev; /**< Position in array of defult uart */
- unsigned int uart_dev_count; /**< Usable spi Count */
- mraa_uart_dev_t uart_dev[6]; /**< Array of UARTs */
- int pwm_default_period; /**< The default PWM period is US */
- int pwm_max_period; /**< Maximum period in us */
- int pwm_min_period; /**< Minimum period in us */
- unsigned int platform_name_length; /**< Platform Name length */
- char* platform_name; /**< Platform Name pointer */
- mraa_pininfo_t* pins; /**< Pointer to pin array */
- /*@}*/
-} mraa_board_t;
-
-/**
* Initialise MRAA
*
- * Detects running platform and attempts to use included pinmap
+ * Detects running platform and attempts to use included pinmap, this is run on
+ * module/library init/load but is handy to rerun to check board initialised
+ * correctly. Anything but MRAA_SUCCESS should be considered a critical failure
*
* @return Result of operation
*/
mraa_result_t mraa_set_log_level(int level);
/**
- * Return the Platform's Name, If no platform detected return "Unknown"
+ * Return the Platform's Name, If no platform detected return NULL
*
* @return platform name
*/
*/
unsigned int mraa_get_pin_count();
+/**
+* Get name of pin, board must be initialised.
+*
+* @param pin number
+*
+* @return char* of pin name
+*/
+char* mraa_get_pin_name(int pin);
+
#ifdef __cplusplus
}
#endif
projects / contrib / mraa.git / blobdiff