hsmci.c File Reference

SAM HSMCI driver.

Copyright (c) 2012-2019 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include "conf_board.h"
#include "sd_mmc_protocol.h"
#include "sysclk.h"
#include "pmc.h"
#include "hsmci.h"

Macros
#define	hsmci_debug(...)
#define	SD_MMC_HSMCI_MEM_CNT   1
#define	SD_MMC_HSMCI_SLOT_0_SIZE   1

Functions
bool	hsmci_adtc_start (sdmmc_cmd_def_t cmd, uint32_t arg, uint16_t block_size, uint16_t nb_block, bool access_block)
	Send an ADTC command on the selected slot An ADTC (Addressed Data Transfer Commands) command is used for read/write access. More...
bool	hsmci_adtc_stop (sdmmc_cmd_def_t cmd, uint32_t arg)
	Send a command to stop an ADTC command on the selected slot. More...
void	hsmci_deselect_device (uint8_t slot)
	Deselect a slot. More...
uint8_t	hsmci_get_bus_width (uint8_t slot)
	Return the maximum bus width of a slot. More...
uint32_t	hsmci_get_response (void)
	Return the 32 bits response of the last command. More...
void	hsmci_get_response_128 (uint8_t *response)
	Return the 128 bits response of the last command. More...
void	hsmci_init (void)
	Initializes the low level driver. More...
bool	hsmci_is_high_speed_capable (void)
	Return the high speed capability of the driver. More...
bool	hsmci_read_word (uint32_t *value)
	Read a word on the line. More...
static void	hsmci_reset (void)
	Reset the HSMCI interface. More...
void	hsmci_select_device (uint8_t slot, uint32_t clock, uint8_t bus_width, bool high_speed)
	Select a slot and initialize it. More...
void	hsmci_send_clock (void)
	Send 74 clock cycles on the line of selected slot Note: It is required after card plug and before card install. More...
bool	hsmci_send_cmd (sdmmc_cmd_def_t cmd, uint32_t arg)
	Send a command on the selected slot. More...
static bool	hsmci_send_cmd_execute (uint32_t cmdr, sdmmc_cmd_def_t cmd, uint32_t arg)
	Send a command. More...
static void	hsmci_set_speed (uint32_t speed, uint32_t mck)
	Set speed of the HSMCI clock. More...
static bool	hsmci_wait_busy (void)
	Wait the end of busy signal on data line. More...
bool	hsmci_write_word (uint32_t value)
	Write a word on the line. More...

Variables
static uint16_t	hsmci_block_size
	Size block requested by last hsmci_adtc_start() More...
static uint16_t	hsmci_nb_block
	Total number of block requested by last hsmci_adtc_start() More...
static uint32_t	hsmci_transfert_pos
	Current position (byte) of the transfer started by hsmci_adtc_start() More...