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git-svn-id: file:///srv/dev-disk-by-uuid-17e88007-4d0c-45e0-8757-cacfcc458630/repositories/svn/Diplomarbeit@55 9fe90eed-be63-e94b-8204-d34ff4c2ff93
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Matthias
2008-12-23 10:34:08 +00:00
parent ee5a771818
commit 373a8c32b2
348 changed files with 86781 additions and 0 deletions
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Tester/SW/lib/Drivers/spi0.c
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/* ---------------------------------------------------------------------------
* spi0.c - v1.0 (c) 2006 Micro-key bv
* ---------------------------------------------------------------------------
* Micro-key bv
* Industrieweg 28, 9804 TG Noordhorn
* Postbus 92, 9800 AA Zuidhorn
* The Netherlands
* Tel: +31 594 503020
* Fax: +31 594 505825
* Email: support@microkey.nl
* Web: www.microkey.nl
* ---------------------------------------------------------------------------
* Description: SPI 0 driver
* ---------------------------------------------------------------------------
* Version(s): 1.0, 07-12-2006, Jos Pasop.
* Creation.
* ---------------------------------------------------------------------------
*/
#define DEBUG
#include "types.h"
#include "lpc23xx.h"
#include "armVic.h"
#include "spi0.h"
#ifdef DEBUG
#include "uart.h"
#include "gpio.h"
#endif
/* ---------------------------------------------------------------------------
* Application include files.
* ---------------------------------------------------------------------------
*/
/* ---------------------------------------------------------------------------
* Local constant and macro definitions.
* ---------------------------------------------------------------------------
*/
#define SPI_SPCR_BIT_ENABLE(b) (b<<2)
#define SPI_SPCR_CPHA(b) (b<<3)
#define SPI_SPCR_CPOL(b) (b<<4)
#define SPI_SPCR_MSTR(b) (b<<5)
#define SPI_SPCR_LSBF(b) (b<<6)
#define SPI_SPCR_SPIE(b) (b<<7)
#define SPI_SPCR_BITS(b) (b<<8)
#define SPI_SPSR_ABRT (1<<3)
#define SPI_SPSR_MODF (1<<4)
#define SPI_SPSR_ROVR (1<<5)
#define SPI_SPSR_WCOL (1<<6)
#define SPI_SPSR_SPIF (1<<7)
#define DISABLE_SPI0_IRQ {SPI_SPCR &= ~(SPI_SPCR_SPIE(1))}
#define ENABLE_SPI0_IRQ {SPI_SPCR |= (SPI_SPCR_SPIE(1))}
/* ---------------------------------------------------------------------------
* Global variable definitions.
* ---------------------------------------------------------------------------
*/
/* ---------------------------------------------------------------------------
* Local variable definitions.
* ---------------------------------------------------------------------------
*/
/* ---------------------------------------------------------------------------
* Local function declarations.
* ---------------------------------------------------------------------------
*/
VOID __attribute__ ((interrupt("IRQ"))) spi0Isr (VOID);
/* ---------------------------------------------------------------------------
* spi0Init -- SPI0 initialize.
*
* This function initializes SPI0 to operate at slave at 1.2Mhz and sets up
* the VIC to for SPI0 interrupt service routine
*
* Global variables: commState, commStateSubI
* ---------------------------------------------------------------------------
*/
VOID
spi0Init
(
VOID
)
{
#ifdef DEBUG
/* Used to toggle the led to be able to check isr interrupt rate. */
PCB_PINSEL1 &= ~0x3; /* set P0.16 (LED) as GPIO */
GPIO_FIO0DIR |= LED; /* set P0.16 as output */
GPIO_FIO0MASK &= ~LED; /* enable P0.16 */
#endif
// OTTO
//spi0TxBuf [0] = 0xD;
//spi0TxBuf [1] = 0x1234;
/* Initialize pin connect block. */
PCB_PINSEL0 &= ~0xFF00; /* clear the SPI0 fields */
PCB_PINSEL0 |= 0x5500; /* configure the SPI0 pins */
S0SPCR = 0;
#if 0
/* Set SPI0 clock rate. 1.2Mhz @ 48Mhz PCLK. */
SPI_SPCCR = 40;
#endif
S0SPCR =
SPI_SPCR_BIT_ENABLE (0) | /* 1 -> enable n of bits selection */
SPI_SPCR_CPHA (1) | /* 1 -> data sampled on 2nd edge */
/* of sck */
SPI_SPCR_CPOL (0) | /* 1 -> active low clock polarity */
SPI_SPCR_MSTR (1) | /* 1 -> master mode */
SPI_SPCR_LSBF (0) | /* 1 -> LSB shifted out first */
SPI_SPCR_SPIE (0) | /* 0 -> hardware interrupt disabled*/
SPI_SPCR_BITS (16); /* 7 < n < 16 -> n of bits, */
/* 0->16 bits */
/* Initialize the SPI0 interrupt vector. */
//VICVectAddr2 = (UINT32) spi0Isr; /* address of the ISR */
//VICIntSelect &= ~VIC_BIT (VIC_SPI0); /* select SPI0 as IRQ */
//VICVectCntl2 = VIC_IRQ_SLOT_EN | VIC_SPI0; /* priority 4 interrupt */
//VICIntEnable = VIC_BIT (VIC_SPI0); /* enable SPI0 interrupt */
}
VOID spi0Enable (VOID)
{
// ?
}
VOID spi0Disable (VOID)
{
// ?
}
RESULT spi0Write (UINT16 data)
{
/* Check if SPI controller is disabled */
S0SPDR = data; /* write data */
if ((S0SPSR & SPI_SPSR_WCOL) == SPI_SPSR_WCOL) return ERROR; /* Write collision */
return OK;
}
RESULT spi0WriteRead (UINT16 *data)
{
volatile int DummyRead;
/* Check if SPI controller is disabled */
DummyRead = S0SPSR; /* For resetting status */
S0SPDR = *data; /* write data */
if ((S0SPSR & SPI_SPSR_WCOL) == SPI_SPSR_WCOL) return ERROR; /* Write collision */
while ((S0SPSR & SPI_SPSR_SPIF) == 0); /* wait if transmit is completed */
*data = S0SPDR; /* read data */
if ((S0SPSR & SPI_SPSR_ROVR) == SPI_SPSR_ROVR) return ERROR; /* Read overrun */
return OK;
}
INT16 spi0Read (UINT16 * pData)
{
volatile int DummyRead;
/* Check if SPI controller is disabled */
DummyRead = S0SPSR; /* For resetting status */
while ((S0SPSR & SPI_SPSR_SPIF) == 0); /* wait if transmit is completed */
*data = S0SPDR; /* read data */
if ((S0SPSR & SPI_SPSR_ROVR) == SPI_SPSR_ROVR) return ERROR; /* Read overrun */
return ERR_NONE;
}