You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
101 lines
3.2 KiB
101 lines
3.2 KiB
9 years ago
|
/*
|
||
|
|
* copyright (c) Espressif System 2010
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _GPIO_H_
|
||
|
|
#define _GPIO_H_
|
||
|
|
|
||
|
|
#define GPIO_PIN_ADDR(i) (GPIO_PIN0_ADDRESS + i*4)
|
||
|
|
|
||
|
|
#define GPIO_ID_IS_PIN_REGISTER(reg_id) \
|
||
|
|
((reg_id >= GPIO_ID_PIN0) && (reg_id <= GPIO_ID_PIN(GPIO_PIN_COUNT-1)))
|
||
|
|
|
||
|
|
#define GPIO_REGID_TO_PINIDX(reg_id) ((reg_id) - GPIO_ID_PIN0)
|
||
|
|
|
||
|
|
typedef enum {
|
||
|
|
GPIO_PIN_INTR_DISABLE = 0,
|
||
|
|
GPIO_PIN_INTR_POSEDGE = 1,
|
||
|
|
GPIO_PIN_INTR_NEGEDGE = 2,
|
||
|
|
GPIO_PIN_INTR_ANYEDGE = 3,
|
||
|
|
GPIO_PIN_INTR_LOLEVEL = 4,
|
||
|
|
GPIO_PIN_INTR_HILEVEL = 5
|
||
|
|
} GPIO_INT_TYPE;
|
||
|
|
|
||
|
|
#define GPIO_OUTPUT_SET(gpio_no, bit_value) \
|
||
|
|
gpio_output_set((bit_value)<<gpio_no, ((~(bit_value))&0x01)<<gpio_no, 1<<gpio_no,0)
|
||
|
|
#define GPIO_DIS_OUTPUT(gpio_no) gpio_output_set(0,0,0, 1<<gpio_no)
|
||
|
|
#define GPIO_INPUT_GET(gpio_no) ((gpio_input_get()>>gpio_no)&BIT0)
|
||
|
|
|
||
|
|
/* GPIO interrupt handler, registered through gpio_intr_handler_register */
|
||
|
|
typedef void (* gpio_intr_handler_fn_t)(uint32 intr_mask, void *arg);
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Initialize GPIO. This includes reading the GPIO Configuration DataSet
|
||
|
|
* to initialize "output enables" and pin configurations for each gpio pin.
|
||
|
|
* Must be called once during startup.
|
||
|
|
*/
|
||
|
|
void gpio_init(void);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Change GPIO pin output by setting, clearing, or disabling pins.
|
||
|
|
* In general, it is expected that a bit will be set in at most one
|
||
|
|
* of these masks. If a bit is clear in all masks, the output state
|
||
|
|
* remains unchanged.
|
||
|
|
*
|
||
|
|
* There is no particular ordering guaranteed; so if the order of
|
||
|
|
* writes is significant, calling code should divide a single call
|
||
|
|
* into multiple calls.
|
||
|
|
*/
|
||
|
|
void gpio_output_set(uint32 set_mask,
|
||
|
|
uint32 clear_mask,
|
||
|
|
uint32 enable_mask,
|
||
|
|
uint32 disable_mask);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Sample the value of GPIO input pins and returns a bitmask.
|
||
|
|
*/
|
||
|
|
uint32 gpio_input_get(void);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set the specified GPIO register to the specified value.
|
||
|
|
* This is a very general and powerful interface that is not
|
||
|
|
* expected to be used during normal operation. It is intended
|
||
|
|
* mainly for debug, or for unusual requirements.
|
||
|
|
*/
|
||
|
|
void gpio_register_set(uint32 reg_id, uint32 value);
|
||
|
|
|
||
|
|
/* Get the current value of the specified GPIO register. */
|
||
|
|
uint32 gpio_register_get(uint32 reg_id);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Register an application-specific interrupt handler for GPIO pin
|
||
|
|
* interrupts. Once the interrupt handler is called, it will not
|
||
|
|
* be called again until after a call to gpio_intr_ack. Any GPIO
|
||
|
|
* interrupts that occur during the interim are masked.
|
||
|
|
*
|
||
|
|
* The application-specific handler is called with a mask of
|
||
|
|
* pending GPIO interrupts. After processing pin interrupts, the
|
||
|
|
* application-specific handler may wish to use gpio_intr_pending
|
||
|
|
* to check for any additional pending interrupts before it returns.
|
||
|
|
*/
|
||
|
|
void gpio_intr_handler_register(gpio_intr_handler_fn_t fn, void *arg);
|
||
|
|
|
||
|
|
/* Determine which GPIO interrupts are pending. */
|
||
|
|
uint32 gpio_intr_pending(void);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Acknowledge GPIO interrupts.
|
||
|
|
* Intended to be called from the gpio_intr_handler_fn.
|
||
|
|
*/
|
||
|
|
void gpio_intr_ack(uint32 ack_mask);
|
||
|
|
|
||
|
|
void gpio_pin_wakeup_enable(uint32 i, GPIO_INT_TYPE intr_state);
|
||
|
|
|
||
|
|
void gpio_pin_wakeup_disable();
|
||
|
|
|
||
|
|
void gpio_pin_intr_state_set(uint32 i, GPIO_INT_TYPE intr_state);
|
||
|
|
|
||
|
|
#endif // _GPIO_H_
|