LPC18xx/43xx SDMMC benchmark example

Detailed Description

Example description
This example measures the SDMMC raw (without file system) I/O perfromance. The SDMMC read & write performance will be measured. Please note that the code will be executed from IARM memory.

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)
  

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

Submitting LPCOpen issues:
Community support for LPCOpen

Macros
#define	debugstr(str)   DEBUGSTR(str)
#define	NUM_SECTORS   2048
#define	NUM_ITER   10
#define	START_SECTOR   32
#define	BUFFER_SIZE   (NUM_SECTORS * MMC_SECTOR_SIZE)

Functions
	LOCATE_AT (0x28200000)
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 ()
static void	Prepare_Buffer (uint32_t value)
static void	print_meas_data (void)
void	SDIO_IRQHandler (void)
	SDIO controller interrupt handler.
int	main (void)
	Main routine for SDMMC example.

Macro Definition Documentation

#define BUFFER_SIZE   (NUM_SECTORS * MMC_SECTOR_SIZE)

Definition at line 108 of file app_sdmmc_meas.c.

#define debugstr

(

str

)

DEBUGSTR(str)

Definition at line 95 of file app_sdmmc_meas.c.

#define NUM_ITER   10

Definition at line 102 of file app_sdmmc_meas.c.

#define NUM_SECTORS   2048

Definition at line 99 of file app_sdmmc_meas.c.

#define START_SECTOR   32

Definition at line 105 of file app_sdmmc_meas.c.

Function Documentation

static void App_SDMMC_Init ( )

static

Definition at line 196 of file app_sdmmc_meas.c.

LOCATE_AT

(

0x28200000

)

Definition at line 115 of file app_sdmmc_meas.c.

int main

(

void

)

Main routine for SDMMC example.

Main program body.

Returns

Nothing

Definition at line 316 of file app_sdmmc_meas.c.

static void Prepare_Buffer ( uint32_t  value )

static

Definition at line 211 of file app_sdmmc_meas.c.

static void print_meas_data ( void  )

static

Definition at line 251 of file app_sdmmc_meas.c.

void SDIO_IRQHandler

(

void

)

SDIO controller interrupt handler.

Returns

Nothing

Definition at line 299 of file app_sdmmc_meas.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 182 of file app_sdmmc_meas.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 168 of file app_sdmmc_meas.c.