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/****************************************************************************************
* arch/arm/src/sam3u/sam3u_spi.h
*
* Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAM3U_SAM3U_SPI_H
#define __ARCH_ARM_SRC_SAM3U_SAM3U_SPI_H
/****************************************************************************************
* Included Files
****************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "sam3u_memorymap.h"
/****************************************************************************************
* Pre-processor Definitions
****************************************************************************************/
/* SPI register offsets *****************************************************************/
#define SAM3U_SPI_CR_OFFSET 0x00 /* Control Register */
#define SAM3U_SPI_MR_OFFSET 0x04 /* Mode Register */
#define SAM3U_SPI_RDR_OFFSET 0x08 /* Receive Data Register */
#define SAM3U_SPI_TDR_OFFSET 0x0c /* Transmit Data Register */
#define SAM3U_SPI_SR_OFFSET 0x10 /* Status Register */
#define SAM3U_SPI_IER_OFFSET 0x14 /* Interrupt Enable Register */
#define SAM3U_SPI_IDR_OFFSET 0x18 /* Interrupt Disable Register */
#define SAM3U_SPI_IMR_OFFSET 0x1c /* Interrupt Mask Register */
/* 0x20-0x2c: Reserved */
#define SAM3U_SPI_CSR0_OFFSET 0x30 /* Chip Select Register 0 */
#define SAM3U_SPI_CSR1_OFFSET 0x34 /* Chip Select Register 1 */
#define SAM3U_SPI_CSR2_OFFSET 0x38 /* Chip Select Register 2 */
#define SAM3U_SPI_CSR3_OFFSET 0x3c /* Chip Select Register 3 */
/* 0x40-0xe0: Reserved */
#define SAM3U_SPI_WPCR_OFFSET 0xe4 /* Write Protection Control Register */
#define SAM3U_SPI_WPSR_OFFSET 0xe8 /* Write Protection Status Register */
/* 0xec-0xf8: Reserved*/
/* SPI register adresses ****************************************************************/
#define SAM3U_SPI_CR (SAM3U_SPI_BASE+SAM3U_SPI_CR_OFFSET) /* Control Register */
#define SAM3U_SPI_MR (SAM3U_SPI_BASE+SAM3U_SPI_MR_OFFSET) /* Mode Register */
#define SAM3U_SPI_RDR (SAM3U_SPI_BASE+SAM3U_SPI_RDR_OFFSET) /* Receive Data Register */
#define SAM3U_SPI_TDR (SAM3U_SPI_BASE+SAM3U_SPI_TDR_OFFSET) /* Transmit Data Register */
#define SAM3U_SPI_SR (SAM3U_SPI_BASE+SAM3U_SPI_SR_OFFSET) /* Status Register */
#define SAM3U_SPI_IER (SAM3U_SPI_BASE+SAM3U_SPI_IER_OFFSET) /* Interrupt Enable Register */
#define SAM3U_SPI_IDR (SAM3U_SPI_BASE+SAM3U_SPI_IDR_OFFSET) /* Interrupt Disable Register */
#define SAM3U_SPI_IMR (SAM3U_SPI_BASE+SAM3U_SPI_IMR_OFFSET) /* Interrupt Mask Register */
#define SAM3U_SPI_CSR0 (SAM3U_SPI_BASE+SAM3U_SPI_CSR0_OFFSET) /* Chip Select Register 0 */
#define SAM3U_SPI_CSR1 (SAM3U_SPI_BASE+SAM3U_SPI_CSR1_OFFSET) /* Chip Select Register 1 */
#define SAM3U_SPI_CSR2 (SAM3U_SPI_BASE+SAM3U_SPI_CSR2_OFFSET) /* Chip Select Register 2 */
#define SAM3U_SPI_CSR3 (SAM3U_SPI_BASE+SAM3U_SPI_CSR3_OFFSET) /* Chip Select Register 3 */
#define SAM3U_SPI_WPCR (SAM3U_SPI_BASE+SAM3U_SPI_WPCR_OFFSET) /* Write Protection Control Register */
#define SAM3U_SPI_WPSR (SAM3U_SPI_BASE+SAM3U_SPI_WPSR_OFFSET) /* Write Protection Status Register */
/* SPI register bit definitions *********************************************************/
/* SPI Control Register */
#define SPI_CR_SPIEN (1 << 0) /* Bit 0: SPI Enable */
#define SPI_CR_SPIDIS (1 << 1) /* Bit 1: SPI Disable */
#define SPI_CR_SWRST (1 << 7) /* Bit 7: SPI Software Reset */
#define SPI_CR_LASTXFER (1 << 24) /* Bit 24: Last Transfer */
/* SPI Mode Register */
#define SPI_MR_MSTR (1 << 0) /* Bit 0: Master/Slave Mode */
#define SPI_MR_PS (1 << 1) /* Bit 1: Peripheral Select */
#define SPI_MR_PCSDEC (1 << 2) /* Bit 2: Chip Select Decode */
#define SPI_MR_MODFDIS (1 << 4) /* Bit 4: Mode Fault Detection */
#define SPI_MR_WDRBT (1 << 5) /* Bit 5: Wait Data Read Before Transfer */
#define SPI_MR_LLB (1 << 7) /* Bit 7: Local Loopback Enable */
#define SPI_MR_PCS_SHIFT (16) /* Bits 16-19: Peripheral Chip Select */
#define SPI_MR_PCS_MASK (15 << SPI_MR_PCS_SHIFT)
#define SPI_MR_DLYBCS_SHIFT (24) /* Bits 24-31: Delay Between Chip Selects */
#define SPI_MR_DLYBCS_MASK (0xff << SPI_MR_DLYBCS_SHIFT)
/* SPI Receive Data Register */
#define SPI_RDR_RD_SHIFT (0) /* Bits 0-15: Receive Data */
#define SPI_RDR_RD_MASK (0xffff << SPI_RDR_RD_SHIFT)
#define SPI_RDR_PCS_SHIFT (16) /* Bits 16-19: Peripheral Chip Select */
#define SPI_RDR_PCS_MASK (15 << SPI_RDR_PCS_SHIFT)
/* SPI Transmit Data Register */
#define SPI_TDR_TD_SHIFT (0) /* Bits 0-15: Transmit Data */
#define SPI_TDR_TD_MASK (0xffff << SPI_TDR_TD_SHIFT)
#define SPI_TDR_PCS_SHIFT (16) /* Bits 16-19: Peripheral Chip Select */
#define SPI_TDR_PCS_MASK (15 << SPI_TDR_PCS_SHIFT)
#define SPI_TDR_LASTXFER (1 << 24) /* Bit 24: Last Transfer */
/* SPI Status Register, SPI Interrupt Enable Register, SPI Interrupt Disable Register,
* and SPI Interrupt Mask Register (common bit fields)
*/
#define SPI_INT_RDRF (1 << 0) /* Bit 0: Receive Data Register Full Interrupt */
#define SPI_INT_TDRE (1 << 1) /* Bit 1: Transmit Data Register Empty Interrupt */
#define SPI_INT_MODF (1 << 2) /* Bit 2: Mode Fault Error Interrupt */
#define SPI_INT_OVRES (1 << 3) /* Bit 3: Overrun Error Interrupt */
#define SPI_INT_NSSR (1 << 8) /* Bit 8: NSS Rising Interrupt */
#define SPI_INT_TXEMPTY (1 << 9) /* Bit 9: Transmission Registers Empty Interrupt */
#define SPI_INT_UNDES (1 << 10) /* Bit 10: Underrun Error Status Interrupt (slave) */
#define SPI_SR_SPIENS (1 << 16) /* Bit 16: SPI Enable Status (SR only) */
/* SPI Chip Select Registers 0-3 */
#define SPI_CSR_CPOL (1 << 0) /* Bit 0: Clock Polarity */
#define SPI_CSR_NCPHA (1 << 1) /* Bit 1: Clock Phase */
#define SPI_CSR_CSNAAT (1 << 2) /* Bit 2: Chip Select Not Active After Transfer */
#define SPI_CSR_CSAAT (1 << 3) /* Bit 3: Chip Select Active After Transfer */
#define SPI_CSR_BITS_SHIFT (4) /* Bits 4-7: Bits Per Transfer */
#define SPI_CSR_BITS_MASK (15 << SPI_CSR_BITS_SHIFT)
# define SPI_CSR_BITS(n) (((n)-8) << SPI_CSR_BITS_SHIFT) /* n, n=8-16 */
# define SPI_CSR_BITS8 (0 << SPI_CSR_BITS_SHIFT) /* 8 */
# define SPI_CSR_BITS9 (1 << SPI_CSR_BITS_SHIFT) /* 9 */
# define SPI_CSR_BITS10 (2 << SPI_CSR_BITS_SHIFT) /* 10 */
# define SPI_CSR_BITS11 (3 << SPI_CSR_BITS_SHIFT) /* 11 */
# define SPI_CSR_BITS12 (4 << SPI_CSR_BITS_SHIFT) /* 12 */
# define SPI_CSR_BITS13 (5 << SPI_CSR_BITS_SHIFT) /* 13 */
# define SPI_CSR_BITS14 (6 << SPI_CSR_BITS_SHIFT) /* 14 */
# define SPI_CSR_BITS15 (7 << SPI_CSR_BITS_SHIFT) /* 15 */
# define SPI_CSR_BITS16 (8 << SPI_CSR_BITS_SHIFT) /* 16 */
#define SPI_CSR_SCBR_SHIFT (8) /* Bits 8-15: Serial Clock Baud Rate */
#define SPI_CSR_SCBR_MASK (0xff << SPI_CSR_SCBR_SHIFT)
#define SPI_CSR_DLYBS_SHIFT (16) /* Bits 16-23: Delay Before SPCK */
#define SPI_CSR_DLYBS_MASK (0xff << SPI_CSR_DLYBS_SHIFT)
#define SPI_CSR_DLYBCT_SHIFT (24) /* Bits 24-31: Delay Between Consecutive Transfers */
#define SPI_CSR_DLYBCT_MASK (0xff << SPI_CSR_DLYBCT_SHIFT)
/* SPI Write Protection Control Register */
#define SPI_WPCR_SPIWPEN (1 << 0) /* Bit 0: SPI Write Protection Enable */
#define SPI_WPCR_SPIWPKEY_SHIFT (8) /* Bits 8-31: SPI Write Protection Key Password */
#define SPI_WPCR_SPIWPKEY_MASK (0x00ffffff << SPI_WPCR_SPIWPKEY_SHIFT)
/* SPI Write Protection Status Register */
#define SPI_WPSR_SPIWPVS_SHIFT (0) /* Bits 0-2: SPI Write Protection Violation Status */
#define SPI_WPSR_SPIWPVS_MASK (7 << SPI_WPSR_SPIWPVS_SHIFT)
#define SPI_WPSR_SPIWPVSRC_SHIFT (8) /* Bits 8-15: SPI Write Protection Violation Source */
#define SPI_WPSR_SPIWPVSRC_MASK (0xff << SPI_WPSR_SPIWPVSRC_SHIFT)
/****************************************************************************************
* Public Types
****************************************************************************************/
/****************************************************************************************
* Public Data
****************************************************************************************/
/****************************************************************************************
* Public Functions
****************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAM3U_SAM3U_SPI_H */
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