LPC18xx/43xx SDMMC example

Detailed Description

Example description
This example describes how to use the SD/MMC interface with a SD card and a FATFS filesystem.

To use the example, plug a SD card (Hitex A4 board) or microSD card (NGX or Keil boards) and connect a serial cable to the board's RS232/UART port start a terminal program to monitor the port. The terminal program on the host PC should be setup for 115K8N1.

Special connection requirements

• Hitex LPC1850EVA-A4-2 and LPC4350EVA-A4-2 boards
  
  • Close pin 1-2 of JP9
    
  • Open all SV3, SV6
    
  • Close all SV12
    
  • Uart1 terminal port: SV11-p2(U1_RXD) connect to SV1-p7, SV11-p4 (U1_TXD) connect to SV1-p5
    
• Keil MCB1857 and MCB4357 boards (debug output terminal on Uart3)
  
• NGX LPC1830 LPC4330 (no debug output terminal)
  

Build procedures:
LPC18xx/43xx example quickstart for Keil uVision4
LPC18xx/43xx example quickstart for IAR EWARM
LPC18xx/43xx example quickstart for Code Red Xpresso

Supported boards and board setup:
Hitex 1850 evaluation boards
Hitex 4350 evaluation boards
Keil 1857 evaluation boards
Keil 4357 evaluation boards
NGX 1830 Xplorer boards
NGX 4330 Xplorer boards

Submitting LPCOpen issues:
Community support for LPCOpen

Macros
#define	debugstr(str)   DEBUGSTR(str)
#define	BUFFER_SIZE   4096

Functions
static void	sdmmc_waitms (uint32_t time)
static void	sdmmc_setup_wakeup (void *bits)
	Sets up the SD event driven wakeup.
static uint32_t	sdmmc_irq_driven_wait (void)
	A better wait callback for SDMMC driven by the IRQ flag.
static void	App_SDMMC_Init ()
void	die (FRESULT rc)
	Error processing function: stop with dying message.
void	SDIO_IRQHandler (void)
	SDIO controller interrupt handler.
int	main (void)
	Main routine for SDMMC example.

Variables
static FATFS	Fatfs
static FIL	Fil
static uint32_t	Buff [BUFFER_SIZE/sizeof(uint32_t)]
static volatile UINT	Timer = 0
static volatile int32_t	sdio_wait_exit = 0
mci_card_struct	sdcardinfo

Macro Definition Documentation

#define BUFFER_SIZE   4096

Definition at line 86 of file sdmmc.c.

#define debugstr

(

str

)

DEBUGSTR(str)

Definition at line 82 of file sdmmc.c.

Typedef Documentation

typedef mci_card_struct CARD_HANDLE_T

Definition at line 45 of file fsmci_cfg.h.

typedef mci_card_struct CARD_HANDLE_T

Definition at line 45 of file fsmci_cfg.h.

Function Documentation

static void App_SDMMC_Init ( )

static

Definition at line 159 of file sdmmc.c.

void die

(

FRESULT

rc

)

Error processing function: stop with dying message.

Parameters

rc	: FatFs return value

Returns

Nothing

Definition at line 210 of file sdmmc.c.

int main

(

void

)

Main routine for SDMMC example.

Main program body.

Returns

Nothing

Definition at line 237 of file sdmmc.c.

void SDIO_IRQHandler

(

void

)

SDIO controller interrupt handler.

Returns

Nothing

Definition at line 220 of file sdmmc.c.

static uint32_t sdmmc_irq_driven_wait ( void  )

static

A better wait callback for SDMMC driven by the IRQ flag.

Returns

0 on success, or failure condition (-1)

Definition at line 145 of file sdmmc.c.

static void sdmmc_setup_wakeup ( void *  bits )

static

Sets up the SD event driven wakeup.

Parameters

bits	: Status bits to poll for command completion

Returns

Nothing

Definition at line 131 of file sdmmc.c.

static void sdmmc_waitms ( uint32_t  time )

static

Definition at line 107 of file sdmmc.c.

Variable Documentation

uint32_t Buff[BUFFER_SIZE/sizeof(uint32_t)]

static

Definition at line 90 of file sdmmc.c.

FATFS Fatfs

static

Definition at line 88 of file sdmmc.c.

FIL Fil

static

Definition at line 89 of file sdmmc.c.

mci_card_struct sdcardinfo

Type used for SD Card handle

Definition at line 100 of file sdmmc.c.

volatile int32_t sdio_wait_exit = 0

static

Definition at line 93 of file sdmmc.c.

volatile UINT Timer = 0

static

Definition at line 92 of file sdmmc.c.