contiki/cpu/cc2538/dev/ssi.h
2015-05-18 10:02:55 +02:00

190 lines
11 KiB
C

/*
* Copyright (c) 2013, University of Michigan.
* All rights reserved.
*
* 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 of the University 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 INSTITUTE 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 INSTITUTE 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.
*/
/**
* \addtogroup cc2538
* @{
*
* \defgroup cc2538-spi cc2538 Synchronous Serial Interface
*
* Driver for the cc2538 SPI peripheral
*
* Register and bitmask definitions based on the Foundation Firmware from
* Texas Instruments.
* @{
*
* \file
* Header file for the cc2538 Synchronous Serial Interface
*/
#ifndef SSI_H_
#define SSI_H_
/*---------------------------------------------------------------------------*/
/** \name Number of SSI instances supported by this CPU.
* @{
*/
#define SSI_INSTANCE_COUNT 2
/** @} */
/*---------------------------------------------------------------------------*/
/** \name Base register memory locations.
* @{
*/
#define SSI0_BASE 0x40008000 /**< Base address for SSI0 */
#define SSI1_BASE 0x40009000 /**< Base address for SSI1 */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SSI register offsets
* @{
*/
#define SSI_CR0 0x00000000 /**< Control register 0 */
#define SSI_CR1 0x00000004 /**< Control register 1 */
#define SSI_DR 0x00000008 /**< Access the TX and RX FIFO */
#define SSI_SR 0x0000000C /**< Meta information about FIFO */
#define SSI_CPSR 0x00000010 /**< Clock divider */
#define SSI_IM 0x00000014 /**< Interrupt mask */
#define SSI_RIS 0x00000018 /**< Raw interrupt status */
#define SSI_MIS 0x0000001C /**< Masked interrupt status */
#define SSI_ICR 0x00000020 /**< Interrupt clear register */
#define SSI_DMACTL 0x00000024 /**< DMA control register */
#define SSI_CC 0x00000FC8 /**< Clock configuration */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SSI Bitmasks and shifts
* @{
*/
#define SSI_CR0_SCR_M 0x0000FF00 /**< Serial clock rate mask */
#define SSI_CR0_SCR_S 8 /**< Serial clock rate shift */
#define SSI_CR0_SPH_M 0x00000080 /**< Serial clock phase (H) mask */
#define SSI_CR0_SPH_S 7 /**< Serial clock phase (H) shift */
#define SSI_CR0_SPO_M 0x00000040 /**< Serial clock phase (O) mask */
#define SSI_CR0_SPO_S 6 /**< Serial clock phase (O) shift */
#define SSI_CR0_FRF_M 0x00000030 /**< Frame format select mask */
#define SSI_CR0_FRF_S 4 /**< Frame format select shift */
#define SSI_CR0_DSS_M 0x0000000F /**< Data size select mask */
#define SSI_CR0_DSS_S 0 /**< Data size select shift */
#define SSI_CR1_SOD_M 0x00000008 /**< Slave mode output disable mask */
#define SSI_CR1_SOD_S 3 /**< Slave mode output disable shift */
#define SSI_CR1_MS_M 0x00000004 /**< Master and slave select mask */
#define SSI_CR1_MS_S 2 /**< Master and slave select shift */
#define SSI_CR1_SSE_M 0x00000002 /**< Synchronous serial port enable mask */
#define SSI_CR1_SSE_S 1 /**< Synchronous serial port enable shift */
#define SSI_CR1_LBM_M 0x00000001 /**< Loop-back mode mask */
#define SSI_CR1_LBM_S 0 /**< Loop-back mode shift */
#define SSI_DR_DATA_M 0x0000FFFF /**< FIFO data mask */
#define SSI_DR_DATA_S 0 /**< FIFO data shift */
#define SSI_SR_BSY_M 0x00000010 /**< Busy bit mask */
#define SSI_SR_BSY_S 4 /**< Busy bit shift */
#define SSI_SR_RFF_M 0x00000008 /**< Receive FIFO full mask */
#define SSI_SR_RFF_S 3 /**< Receive FIFO full shift */
#define SSI_SR_RNE_M 0x00000004 /**< Receive FIFO not empty mask */
#define SSI_SR_RNE_S 2 /**< Receive FIFO not empty shift */
#define SSI_SR_TNF_M 0x00000002 /**< Transmit FIFO not full mask */
#define SSI_SR_TNF_S 1 /**< Transmit FIFO not full shift */
#define SSI_SR_TFE_M 0x00000001 /**< Transmit FIFO empty mask */
#define SSI_SR_TFE_S 0 /**< Transmit FIFO empty shift */
#define SSI_CPSR_CPSDVSR_M 0x000000FF /**< Clock prescale divisor mask */
#define SSI_CPSR_CPSDVSR_S 0 /**< Clock prescale divisor shift */
#define SSI_IM_TXIM_M 0x00000008 /**< Transmit FIFO interrupt mask mask */
#define SSI_IM_TXIM_S 3 /**< Transmit FIFO interrupt mask shift */
#define SSI_IM_RXIM_M 0x00000004 /**< Receive FIFO interrupt mask mask */
#define SSI_IM_RXIM_S 2 /**< Receive FIFO interrupt mask shift */
#define SSI_IM_RTIM_M 0x00000002 /**< Receive time-out interrupt mask mask */
#define SSI_IM_RTIM_S 1 /**< Receive time-out interrupt mask shift */
#define SSI_IM_RORIM_M 0x00000001 /**< Receive overrun interrupt mask mask */
#define SSI_IM_RORIM_S 0 /**< Receive overrun interrupt mask shift */
#define SSI_RIS_TXRIS_M 0x00000008 /**< SSITXINTR raw state mask */
#define SSI_RIS_TXRIS_S 3 /**< SSITXINTR raw state shift */
#define SSI_RIS_RXRIS_M 0x00000004 /**< SSIRXINTR raw state mask */
#define SSI_RIS_RXRIS_S 2 /**< SSIRXINTR raw state shift */
#define SSI_RIS_RTRIS_M 0x00000002 /**< SSIRTINTR raw state mask */
#define SSI_RIS_RTRIS_S 1 /**< SSIRTINTR raw state shift */
#define SSI_RIS_RORRIS_M 0x00000001 /**< SSIRORINTR raw state mask */
#define SSI_RIS_RORRIS_S 0 /**< SSIRORINTR raw state shift */
#define SSI_MIS_TXMIS_M 0x00000008 /**< SSITXINTR masked state mask */
#define SSI_MIS_TXMIS_S 3 /**< SSITXINTR masked state shift */
#define SSI_MIS_RXMIS_M 0x00000004 /**< SSIRXINTR masked state mask */
#define SSI_MIS_RXMIS_S 2 /**< SSIRXINTR masked state shift */
#define SSI_MIS_RTMIS_M 0x00000002 /**< SSIRTINTR masked state mask */
#define SSI_MIS_RTMIS_S 1 /**< SSIRTINTR masked state shift */
#define SSI_MIS_RORMIS_M 0x00000001 /**< SSIRORINTR masked state mask */
#define SSI_MIS_RORMIS_S 0 /**< SSIRORINTR masked state shift */
#define SSI_ICR_RTIC_M 0x00000002 /**< Receive time-out interrupt clear mask */
#define SSI_ICR_RTIC_S 1 /**< Receive time-out interrupt clear shift */
#define SSI_ICR_RORIC_M 0x00000001 /**< Receive overrun interrupt clear mask */
#define SSI_ICR_RORIC_S 0 /**< Receive overrun interrupt clear shift */
#define SSI_DMACTL_TXDMAE_M 0x00000002 /**< Transmit DMA enable mask */
#define SSI_DMACTL_TXDMAE_S 1 /**< Transmit DMA enable shift */
#define SSI_DMACTL_RXDMAE_M 0x00000001 /**< Receive DMA enable mask */
#define SSI_DMACTL_RXDMAE_S 0 /**< Receive DMA enable shift */
#define SSI_CC_CS_M 0x00000007 /**< Baud and system clock source mask */
#define SSI_CC_CS_S 0 /**< Baud and system clock source shift */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SSI Register Values
* @{
*/
#define SSI_CR0_SPH 0x00000080 /**< Serial clock phase (H) */
#define SSI_CR0_SPO 0x00000040 /**< Serial clock phase (O) */
#define SSI_CR0_FRF_MOTOROLA 0x00000000 /**< Motorola frame format */
#define SSI_CR0_FRF_TI 0x00000010 /**< Texas Instruments frame format */
#define SSI_CR0_FRF_MICROWIRE 0x00000020 /**< National Microwire frame format */
#define SSI_CR1_SOD 0x00000008 /**< Slave mode output disable */
#define SSI_CR1_MS 0x00000004 /**< Master and slave select */
#define SSI_CR1_SSE 0x00000002 /**< Synchronous serial port enable */
#define SSI_CR1_LBM 0x00000001 /**< Loop-back mode */
#define SSI_SR_BSY 0x00000010 /**< Busy bit */
#define SSI_SR_RFF 0x00000008 /**< Receive FIFO full */
#define SSI_SR_RNE 0x00000004 /**< Receive FIFO not empty */
#define SSI_SR_TNF 0x00000002 /**< Transmit FIFO not full */
#define SSI_SR_TFE 0x00000001 /**< Transmit FIFO empty */
#define SSI_IM_TXIM 0x00000008 /**< Transmit FIFO interrupt mask */
#define SSI_IM_RXIM 0x00000004 /**< Receive FIFO interrupt mask */
#define SSI_IM_RTIM 0x00000002 /**< Receive time-out interrupt mask */
#define SSI_IM_RORIM 0x00000001 /**< Receive overrun interrupt mask */
#define SSI_RIS_TXRIS 0x00000008 /**< SSITXINTR raw state */
#define SSI_RIS_RXRIS 0x00000004 /**< SSIRXINTR raw state */
#define SSI_RIS_RTRIS 0x00000002 /**< SSIRTINTR raw state */
#define SSI_RIS_RORRIS 0x00000001 /**< SSIRORINTR raw state */
#define SSI_MIS_TXMIS 0x00000008 /**< SSITXINTR masked state */
#define SSI_MIS_RXMIS 0x00000004 /**< SSIRXINTR masked state */
#define SSI_MIS_RTMIS 0x00000002 /**< SSIRTINTR masked state */
#define SSI_MIS_RORMIS 0x00000001 /**< SSIRORINTR masked state */
#define SSI_ICR_RTIC 0x00000002 /**< Receive time-out interrupt clear */
#define SSI_ICR_RORIC 0x00000001 /**< Receive overrun interrupt clear */
#define SSI_DMACTL_TXDMAE 0x00000002 /**< Transmit DMA enable */
#define SSI_DMACTL_RXDMAE 0x00000001 /**< Receive DMA enable */
/** @} */
#endif
/**
* @}
* @}
*/