hal_mmc_spi.c File Reference

MMC over SPI driver code. More...

#include <string.h>
#include "hal.h"

Go to the source code of this file.

Functions
static uint8_t	crc7 (uint8_t crc, const uint8_t *buffer, size_t len)
	Calculate the MMC standard CRC-7 based on a lookup table. More...
static void	wait (MMCDriver *mmcp)
	Waits an idle condition. More...
static void	send_hdr (MMCDriver *mmcp, uint8_t cmd, uint32_t arg)
	Sends a command header. More...
static uint8_t	recvr1 (MMCDriver *mmcp)
	Receives a single byte response. More...
static uint8_t	recvr3 (MMCDriver *mmcp, uint8_t *buffer)
	Receives a three byte response. More...
static uint8_t	send_command_R1 (MMCDriver *mmcp, uint8_t cmd, uint32_t arg)
	Sends a command an returns a single byte response. More...
static uint8_t	send_command_R3 (MMCDriver *mmcp, uint8_t cmd, uint32_t arg, uint8_t *response)
	Sends a command which returns a five bytes response (R3). More...
static bool	read_CxD (MMCDriver *mmcp, uint8_t cmd, uint32_t cxd[4])
	Reads the CSD. More...
static void	sync (MMCDriver *mmcp)
	Waits that the card reaches an idle state. More...
void	mmcInit (void)
	MMC over SPI driver initialization. More...
void	mmcObjectInit (MMCDriver *mmcp)
	Initializes an instance. More...
void	mmcStart (MMCDriver *mmcp, const MMCConfig *config)
	Configures and activates the MMC peripheral. More...
void	mmcStop (MMCDriver *mmcp)
	Disables the MMC peripheral. More...
bool	mmcConnect (MMCDriver *mmcp)
	Performs the initialization procedure on the inserted card. More...
bool	mmcDisconnect (MMCDriver *mmcp)
	Brings the driver in a state safe for card removal. More...
bool	mmcStartSequentialRead (MMCDriver *mmcp, uint32_t startblk)
	Starts a sequential read. More...
bool	mmcSequentialRead (MMCDriver *mmcp, uint8_t *buffer)
	Reads a block within a sequential read operation. More...
bool	mmcStopSequentialRead (MMCDriver *mmcp)
	Stops a sequential read gracefully. More...
bool	mmcStartSequentialWrite (MMCDriver *mmcp, uint32_t startblk)
	Starts a sequential write. More...
bool	mmcSequentialWrite (MMCDriver *mmcp, const uint8_t *buffer)
	Writes a block within a sequential write operation. More...
bool	mmcStopSequentialWrite (MMCDriver *mmcp)
	Stops a sequential write gracefully. More...
bool	mmcSync (MMCDriver *mmcp)
	Waits for card idle condition. More...
bool	mmcGetInfo (MMCDriver *mmcp, BlockDeviceInfo *bdip)
	Returns the media info. More...
bool	mmcErase (MMCDriver *mmcp, uint32_t startblk, uint32_t endblk)
	Erases blocks. More...

Variables
static const struct MMCDriverVMT	mmc_vmt
	Virtual methods table. More...
static const uint8_t	crc7_lookup_table [256]
	Lookup table for CRC-7 ( based on polynomial x^7 + x^3 + 1). More...

Detailed Description

MMC over SPI driver code.

Definition in file hal_mmc_spi.c.