AIROC™ BTSDK v4.9 - Documentation | ||||
Defines a driver to facilitate interfacing with the GPIO pins. More...
Macros | |
#define | WICED_GPIO_ACTIVE_HIGH 1 |
#define | WICED_GPIO_ACTIVE_LOW 0 |
#define | wiced_hal_gpio_slimboot_reenforce_outputpin_value gpio_slimboot_reinforce_all_outputpin_value |
Typedefs | |
typedef enum GPIO_STATUS_e | wiced_bt_gpio_select_status_t |
Possible return values from wiced_hal_gpio_select_function(...), Callers only need to check for the GPIO_FAILURE case since any other status means success. | |
Enumerations | |
enum | tGPIO_PIN_OUTPUT_CONFIG { GPIO_PIN_OUTPUT_LOW, GPIO_PIN_OUTPUT_HIGH } |
Pin output config. | |
enum | { GPIO_EDGE_TRIGGER_MASK = 0x0001, GPIO_EDGE_TRIGGER = 0x0001, GPIO_LEVEL_TRIGGER = 0x0000, GPIO_TRIGGER_POLARITY_MASK = 0x0002, GPIO_TRIGGER_NEG = 0x0002, GPIO_DUAL_EDGE_TRIGGER_MASK = 0x0004, GPIO_EDGE_TRIGGER_BOTH = 0x0004, GPIO_EDGE_TRIGGER_SINGLE = 0x0000, GPIO_INTERRUPT_ENABLE_MASK = 0x0008, GPIO_INTERRUPT_ENABLE = 0x0008, GPIO_INTERRUPT_DISABLE = 0x0000, GPIO_EN_INT_MASK = GPIO_EDGE_TRIGGER_MASK | GPIO_TRIGGER_POLARITY_MASK | GPIO_DUAL_EDGE_TRIGGER_MASK | GPIO_INTERRUPT_ENABLE_MASK, GPIO_EN_INT_LEVEL_HIGH = GPIO_INTERRUPT_ENABLE | GPIO_LEVEL_TRIGGER, GPIO_EN_INT_LEVEL_LOW = GPIO_INTERRUPT_ENABLE | GPIO_LEVEL_TRIGGER | GPIO_TRIGGER_NEG, GPIO_EN_INT_RISING_EDGE = GPIO_INTERRUPT_ENABLE | GPIO_EDGE_TRIGGER, GPIO_EN_INT_FALLING_EDGE = GPIO_INTERRUPT_ENABLE | GPIO_EDGE_TRIGGER | GPIO_TRIGGER_NEG, GPIO_EN_INT_BOTH_EDGE = GPIO_INTERRUPT_ENABLE | GPIO_EDGE_TRIGGER | GPIO_EDGE_TRIGGER_BOTH, GPIO_INPUT_ENABLE = 0x0000, GPIO_OUTPUT_DISABLE = 0x0000, GPIO_OUTPUT_ENABLE = 0x4000, GPIO_KS_OUTPUT_ENABLE = 0x0001, GPIO_OUTPUT_FN_SEL_MASK = 0x0000, GPIO_OUTPUT_FN_SEL_SHIFT = 0, GPIO_GLOBAL_INPUT_ENABLE = 0x0000, GPIO_GLOBAL_INPUT_DISABLE = 0x0040, GPIO_PULL_UP_DOWN_NONE = 0x0000, GPIO_PULL_UP = 0x0400, GPIO_PULL_DOWN = 0x0200, GPIO_INPUT_DISABLE = 0x0600, GPIO_DRIVE_SEL_MASK = 0x0800, GPIO_DRIVE_SEL_LOWEST = 0x0000, GPIO_DRIVE_SEL_MIDDLE_0 = 0x0000, GPIO_DRIVE_SEL_MIDDLE_1 = 0x0800, GPIO_DRIVE_SEL_HIGHEST = 0x0800, GPIO_HYSTERESIS_MASK = 0x2000, GPIO_HYSTERESIS_ON = 0x2000, GPIO_HYSTERESIS_OFF = 0x0000 } |
The following enum defines the constant values for the GPIO driver and associated GPIOs, each of which has a set of configuration signals. More... | |
enum | wiced_bt_gpio_numbers_t { WICED_P00 = 0, WICED_P01, WICED_P02, WICED_P03, WICED_P04, WICED_P05, WICED_P06, WICED_P07, WICED_P08, WICED_P09, WICED_P10, WICED_P11, WICED_P12, WICED_P13, WICED_P14, WICED_P15, WICED_P16, WICED_P17, WICED_P18, WICED_P19, WICED_P20, WICED_P21, WICED_P22, WICED_P23, WICED_P24, WICED_P25, WICED_P26, WICED_P27, WICED_P28, WICED_P29, WICED_P30, WICED_P31, WICED_P32, WICED_P33, WICED_P34, WICED_P35, WICED_P36, WICED_P37, WICED_P38, WICED_P39, WICED_GPIO_00, WICED_GPIO_01, WICED_GPIO_02, WICED_GPIO_03, WICED_GPIO_04, WICED_GPIO_05, WICED_GPIO_06, WICED_GPIO_07, MAX_NUM_OF_GPIO } |
GPIO Numbers : last 8 are ARM GPIOs and rest are LHL GPIOs. More... | |
enum | wiced_bt_gpio_function_t { WICED_GPIO = 0, WICED_I2C_1_SCL, WICED_I2C_1_SDA, RESERVED_1, RESERVED_2, WICED_SPI_1_CLK, WICED_SPI_1_CS, WICED_SPI_1_MOSI, WICED_SPI_1_MISO, RESERVED_3, RESERVED_4, RESERVED_5, RESERVED_6, WICED_SPI_2_CLK, WICED_SPI_2_CS, WICED_SPI_2_MOSI, WICED_SPI_2_MISO, RESERVED_7, RESERVED_8, RESERVED_9, RESERVED_10, RESERVED_11, RESERVED_12, RESERVED_13, RESERVED_14, RESERVED_15, WICED_SWDCK, WICED_SWDIO, WICED_UART_1_TXD, WICED_UART_1_RXD, WICED_UART_1_CTS, WICED_UART_1_RTS, WICED_UART_2_TXD, WICED_UART_2_RXD, WICED_UART_2_CTS, WICED_UART_2_RTS, RESERVED_16, RESERVED_17, RESERVED_18, RESERVED_19, WICED_PCM_IN_I2S_DI, WICED_PCM_OUT_I2S_DO, WICED_PCM_SYNC_I2S_WS, WICED_PCM_CLK_I2S_CLK, RESERVED_20, RESERVED_21, RESERVED_22, RESERVED_23, RESERVED_24, RESERVED_25, RESERVED_26, RESERVED_27, WICED_GCI_SECI_IN, WICED_GCI_SECI_OUT, WICED_ACLK_0, WICED_ACLK_1, WICED_KSO0, WICED_KSO1, WICED_KSO2, WICED_KSO3, WICED_KSO4, WICED_KSO5, WICED_KSO6, WICED_KSO7, WICED_KSO8, WICED_KSO9, WICED_KSO10, WICED_KSO11, WICED_KSO12, WICED_KSO13, WICED_KSO14, WICED_KSO15, WICED_KSO16, WICED_KSO17, WICED_KSO18, WICED_KSO19, WICED_TX_PD, WICED_TX_PD_TILDA, WICED_PA_RAMP, WICED_PWM0, WICED_PWM1, WICED_PWM2, WICED_PWM3, WICED_PWM4, WICED_PWM5, WICED_UNAVAILABLE = 0xFF } |
possible functions to be brought out through LHL GPIO's More... | |
enum | GPIO_STATUS_e { GPIO_FAILURE, GPIO_SUCCESS, GPIO_REMAPPED, GPIO_MOVED } |
Possible return values from wiced_hal_gpio_select_function(...), Callers only need to check for the GPIO_FAILURE case since any other status means success. More... | |
Functions | |
void | wiced_hal_gpio_init (void) |
Initializes the GPIO driver and its private values. More... | |
UINT8 | wiced_hal_gpio_pin_to_port_pin (UINT8 pin) |
Convert a given schematic pin number (i.e. More... | |
void | wiced_hal_gpio_configure_pin (UINT32 pin, UINT32 config, UINT32 outputVal) |
Configures a GPIO pin. More... | |
UINT16 | wiced_hal_gpio_get_pin_config (UINT32 pin) |
Retrieve the current configuration of the specified pin. More... | |
void | wiced_hal_gpio_set_pin_output (UINT32 pin, UINT32 val) |
Sets the output value of a pin. More... | |
UINT32 | wiced_hal_gpio_get_pin_output (UINT32 pin) |
Get the programmed output value of a pin. More... | |
UINT32 | wiced_hal_gpio_get_pin_input_status (UINT32 pin) |
Read the current value at a pin. More... | |
UINT32 | wiced_hal_gpio_get_pin_interrupt_status (UINT32 pin) |
Get the interrupt status of a pin. More... | |
void | wiced_hal_gpio_register_pin_for_interrupt (UINT16 pin, void(*userfn)(void *, BYTE), void *userdata) |
Register a function for notification of changes to a pin (via interrupt). More... | |
UINT32 | wiced_hal_gpio_clear_pin_interrupt_status (UINT32 pin) |
Clear the interrupt status of a pin manually. More... | |
void | wiced_hal_gpio_disable_all_inputs (void) |
Configures all gpios to be INPUT DISABLED. More... | |
BOOL32 | wiced_hal_gpio_slimboot_reenforce_cfg (BYTE pin, UINT16 config) |
save the LHL GPIO configuration in AON memeory to reenforce in slimboot This is a must if we want to wake up in SDS by external LHL GPIO interrupts More... | |
void | gpio_slimboot_reinforce_all_outputpin_value (void) |
For the GPIO configurations in AON memory that needs to be reenforced in slimboot, before entering uBCS mode, please call this function to save all the output pins value again in AON memory. More... | |
wiced_bt_gpio_select_status_t | wiced_hal_gpio_select_function (wiced_bt_gpio_numbers_t pin, wiced_bt_gpio_function_t function) |
Configure a GPIO pin to have the chosen functionality. More... | |
Defines a driver to facilitate interfacing with the GPIO pins.
Use this driver to control the behavior of any desired pin, such as driving a 1 or a 0, or as part of other drivers such as controlling the chip-select (CS) line for the SPI driver.
#define WICED_GPIO_ACTIVE_HIGH 1 |
GPIO Active Level HIGH
#define WICED_GPIO_ACTIVE_LOW 0 |
GPIO Active Level LOW
anonymous enum |
The following enum defines the constant values for the GPIO driver and associated GPIOs, each of which has a set of configuration signals.
enum GPIO_STATUS_e |
Possible return values from wiced_hal_gpio_select_function(...), Callers only need to check for the GPIO_FAILURE case since any other status means success.
possible functions to be brought out through LHL GPIO's
GPIO Numbers : last 8 are ARM GPIOs and rest are LHL GPIOs.
void gpio_slimboot_reinforce_all_outputpin_value | ( | void | ) |
For the GPIO configurations in AON memory that needs to be reenforced in slimboot, before entering uBCS mode, please call this function to save all the output pins value again in AON memory.
none |
Clear the interrupt status of a pin manually.
pin | - pin id (0-39). |
Configures a GPIO pin.
Note that the GPIO output value is programmed before the GPIO is configured. This ensures that the GPIO will activate with the correct external value. Also note that the output value is always written to the output register regardless of whether the GPIO is configured as input or output.
Enabling interrupts here isn't sufficient; you also want to register with registerForMask().
All input parameter values must be in range or the function will have no effect.
pin | - pin id (0-39). |
config | - Gpio configuration. See Parameters section above for possible values. |
For example, to enable interrupts for all edges, with a pull-down, you could use:
/// GPIO_EDGE_TRIGGER | GPIO_EDGE_TRIGGER_BOTH | /// GPIO_INTERRUPT_ENABLE_MASK | GPIO_PULL_DOWN_MASK ///
\param outputVal - output value. \return none
void wiced_hal_gpio_disable_all_inputs | ( | void | ) |
Configures all gpios to be INPUT DISABLED.
none |
Retrieve the current configuration of the specified pin.
All input parameter values must be in range or the function will have no effect.
pin | - pin id (0-39). |
Read the current value at a pin.
Note that for this to be valid, the pin must be configured with input enabled.
pin | - pin id (0-39). |
Get the interrupt status of a pin.
pin | - pin id (0-39). |
Get the programmed output value of a pin.
Note that this does not return the current pin value. It returns the value that the pin would attempt to drive if it is configured as output.
pin | - pin id (0-39). |
void wiced_hal_gpio_init | ( | void | ) |
Initializes the GPIO driver and its private values.
Also programs all GPIOs to be ready for use. This must be invoked before accessing any GPIO driver services, typically at boot. This is independent of other drivers and must be one of the first to be initialized.
none |
Convert a given schematic pin number (i.e.
P5) to the internal port/pin representation used by various other drivers such as PSPI and PUART. There could be up to 40 GPIO pins on a board so the numbering is P0 - P39.
pin | - The desired pin number from the schematic. Ex: P<pin> |
void wiced_hal_gpio_register_pin_for_interrupt | ( | UINT16 | pin, |
void(*)(void *, BYTE) | userfn, | ||
void * | userdata | ||
) |
Register a function for notification of changes to a pin (via interrupt).
Note that this is independent of configuring the pin for interrupts; a call to configurePin() is also required.
Also note that once registered, you CANNOT UNREGISTER; registration is meant to be a startup activity. To stop receiving notifications, re-configure the pin and disable the interrupt using configurePin().
Example:
/// void gpioIntTestCb(void *data); /// /// UINT16 gpioIntMasks[GPIO_NUM_PORTS] = {0}; /// wiced_hal_gpio_configurePin(27, /// (GPIO_INPUT_ENABLE|GPIO_PULL_DOWN|GPIO_EN_INT_RISING_EDGE), /// GPIO_PIN_OUTPUT_LOW); /// wiced_hal_gpio_register_pin_for_interrupt(WICED_P01, gpio_test_cb, NULL); ///
\param masks - Points to an array of NUM_PORTS. \param userfn - Points to the function to call when the interrupt comes .Below is the description of the arguments received by the call back. void* user_data - User data provided when interrupt is being registered using wiced_hal_gpio_register_pin_for_interrupt(...) BYTE value - Number of the pin causing the interrupt (!) Note that the function does not need to clear the interrupt status; this will be done automatically. (!) Note that the function will be called ONCE per interrupt, not once per pin (this makes a difference if multiple pins toggle at the same time). \param userdata - Will be passed back to userfn as-is. Typically NULL. \return none
wiced_bt_gpio_select_status_t wiced_hal_gpio_select_function | ( | wiced_bt_gpio_numbers_t | pin, |
wiced_bt_gpio_function_t | function | ||
) |
Configure a GPIO pin to have the chosen functionality.
[in] | pin | (0-39) (Only LHL GPIO supported for now) |
[in] | function | Chosen functionality (refer wiced_bt_gpio_function_t for valid options) |
Sets the output value of a pin.
Note that the pin must already be configured as output or this will have no visible effect.
All input parameter values must be in range or the function will have no effect.
pin | - pin id (0-39). |
val | - the output value
|
save the LHL GPIO configuration in AON memeory to reenforce in slimboot This is a must if we want to wake up in SDS by external LHL GPIO interrupts
pin | - pin id (0-39) |
config | - Gpio configuration. |