drivers/sdmmc/card_detect.c File Reference

SD/MMC card detect handler. More...

#include <debug.h>
#include <delayed_work.h>
#include <malloc.h>
#include <slist.h>
#include <workqueue.h>
#include <chip/portmux.h>
#include <gpio/gpio_irq_handler.h>
#include <sdmmc/sdmmc.h>
#include <app/timer.h>
#include <app/workqueue.h>

Include dependency graph for card_detect.c:

Go to the source code of this file.

Defines
#define	SDMMC_CD_DELAY_US   20000
	SD/MMC debounce interval for card detection.
Functions
struct sdmmc_cd *	sdmmc_cd_init (struct sdmmc_slot *slot, gpio_pin_t pin)
	Initialize card detection handler.
void	sdmmc_cd_enable (struct sdmmc_cd *cd)
	Enable card detection handler.

---

Detailed Description

SD/MMC card detect handler.

Card detect handler that listens for interrupt on gpio line and notifies slot on changed status.

• Compiler: IAR EWAVR32 and GNU GCC for AVR32
• Supported devices: All devices
• AppNote:

Author:

Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file card_detect.c.

---

Define Documentation

#define SDMMC_CD_DELAY_US   20000

SD/MMC debounce interval for card detection.

20 ms is assumed to be a good compromise between responsiveness and robustness.

Definition at line 63 of file card_detect.c.

Referenced by sdmmc_cd_enable().

---

Function Documentation

void sdmmc_cd_enable

(

struct sdmmc_cd *

cd

)

Enable card detection handler.

Parameters:

cd

Private data for card detction handler

Definition at line 118 of file card_detect.c.

References delayed_work_run_us(), and SDMMC_CD_DELAY_US.

Here is the call graph for this function:

struct sdmmc_cd* sdmmc_cd_init	(	struct sdmmc_slot *	slot,
		gpio_pin_t	pin
	)			[read]

Initialize card detection handler.

Parameters:

	slot	sdmmc_slot
	pin	gpio pin to use as card detect input

Definition at line 97 of file card_detect.c.

References dbg_error, delayed_work_init(), gpio_init_irq_handler(), gpio_register_irq_handler(), and workqueue_init_item().

Referenced by sdmmc_mcihost_init().

Here is the call graph for this function: