microsd.c File Reference

Detailed Description

Micro SD card driver for the EFM32GG_DK3750 development kit. This file provides the interface layer between the DK and the fat filesystem provided.

Version

5.1.1

License

Copyright 2015 Silicon Labs, Inc. http://www.silabs.com

This file is licensed under the Silabs License Agreement. See the file "Silabs_License_Agreement.txt" for details. Before using this software for any purpose, you must agree to the terms of that agreement.

Definition in file microsd.c.

#include "diskio.h"
#include "microsd.h"
#include "em_cmu.h"
#include "em_usart.h"

Go to the source code of this file.

Functions
int	MICROSD_BlockRx (uint8_t *buff, uint32_t btr)
	Receive a data block from micro SD card. More...
int	MICROSD_BlockTx (const uint8_t *buff, uint8_t token)
	Send a data block to micro SD card. More...
void	MICROSD_Deinit (void)
	Deinitialize SPI peripheral. Turn off the SPI peripheral and disable SPI GPIO pins.
void	MICROSD_Deselect (void)
	Deselect the micro SD card and release the SPI bus.
void	MICROSD_Init (void)
	Initialize the SPI peripheral for microSD card usage. SPI pins and speed etc. is defined in microsdconfig.h.
void	MICROSD_PowerOff (void)
	Turn off micro SD card power. DK doesn't support socket power control, only disable the SPI clock.
void	MICROSD_PowerOn (void)
	Turn on micro SD card power. DK doesn't support socket power control, only enable the SPI clock.
int	MICROSD_Select (void)
	Select the micro SD card and wait for the card to become ready. More...
uint8_t	MICROSD_SendCmd (uint8_t cmd, DWORD arg)
	Send a command packet to micro SD card. More...
void	MICROSD_SpiClkFast (void)
	Set SPI clock to maximum frequency.
void	MICROSD_SpiClkSlow (void)
	Set SPI clock to a low frequency suitable for initial card initialization.
bool	MICROSD_TimeOutElapsed (void)
	Check if timeout value set with MICROSD_TimeOutSet() has elapsed. More...
void	MICROSD_TimeOutSet (uint32_t msec)
	Set a timeout value. The timeout value will be decremented towards zero when SPI traffic to/from the micro SD card takes place. Use MICROSD_TimeOutElapsed() to check if timeout has elapsed. More...
uint8_t	MICROSD_XferSpi (uint8_t data)
	Do one SPI transfer. More...