Imported SPI API from Yanzi Networks internal Contiki fork.
This commit is contained in:
Niclas Finne
Xenofon (Fontas) Fafoutis
parent
802576a1bc
commit
0683d4dc3d
|
|
@ -15,7 +15,8 @@ CONTIKI_CPU_DIRS = . dev usb usb/common usb/common/cdc-acm
|
|||
|
||||
### CPU-dependent source files
|
||||
CONTIKI_CPU_SOURCEFILES += soc.c clock.c rtimer-arch.c uart.c watchdog.c
|
||||
CONTIKI_CPU_SOURCEFILES += nvic.c sys-ctrl.c gpio.c ioc.c spi.c adc.c
|
||||
CONTIKI_CPU_SOURCEFILES += nvic.c sys-ctrl.c gpio.c ioc.c adc.c
|
||||
CONTIKI_CPU_SOURCEFILES += spi.c spi-dev-arch.c
|
||||
CONTIKI_CPU_SOURCEFILES += crypto.c aes.c ecb.c cbc.c ctr.c cbc-mac.c gcm.c
|
||||
CONTIKI_CPU_SOURCEFILES += ccm.c sha256.c gpio-hal-arch.c
|
||||
CONTIKI_CPU_SOURCEFILES += cc2538-aes-128.c cc2538-ccm-star.c
|
||||
|
|
|
|||
|
|
@ -0,0 +1,185 @@
|
|||
/*
|
||||
* Copyright (c) 2016-2017, Yanzi Networks.
|
||||
* 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 copyright holder 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 HOLDER 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 HOLDER 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.
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include "dev/spi-dev.h"
|
||||
#include "spi-arch.h"
|
||||
|
||||
#define DEBUG 0
|
||||
#if DEBUG
|
||||
#include <stdio.h>
|
||||
#define PRINTF(...) printf(__VA_ARGS__)
|
||||
#else
|
||||
#define PRINTF(...)
|
||||
#endif
|
||||
|
||||
#ifdef PLATFORM_HAS_SPI_DEV_ARCH
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
spix_wait_tx_ready(int spi_instance)
|
||||
{
|
||||
int reg = spi_instance == 0 ? SSI0_BASE : SSI1_BASE;
|
||||
|
||||
/* Infinite loop until SR_TNF - Transmit FIFO Not Full */
|
||||
while(!(REG(reg + SSI_SR) & SSI_SR_TNF));
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static int
|
||||
spix_read_buf(int spi_instance)
|
||||
{
|
||||
int reg = spi_instance == 0 ? SSI0_BASE : SSI1_BASE;
|
||||
|
||||
return REG(reg + SSI_DR);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
spix_write_buf(int spi_instance, int data)
|
||||
{
|
||||
int reg = spi_instance == 0 ? SSI0_BASE : SSI1_BASE;
|
||||
|
||||
REG(reg + SSI_DR) = data;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
spix_wait_eotx(int spi_instance)
|
||||
{
|
||||
int reg = spi_instance == 0 ? SSI0_BASE : SSI1_BASE;
|
||||
|
||||
/* wait until not busy */
|
||||
while(REG(reg + SSI_SR) & SSI_SR_BSY);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
spix_wait_eorx(int spi_instance)
|
||||
{
|
||||
int reg = spi_instance == 0 ? SSI0_BASE : SSI1_BASE;
|
||||
|
||||
/* wait as long as receive is empty */
|
||||
while(!(REG(reg + SSI_SR) & SSI_SR_RNE));
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_arch_lock(spi_device_t *dev)
|
||||
{
|
||||
spi_bus_t *bus;
|
||||
bus = dev->bus;
|
||||
|
||||
if(bus->lock) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
/* Add support for timeout also!!! */
|
||||
bus->lock = 1;
|
||||
bus->lock_device = dev;
|
||||
|
||||
PRINTF("SPI: lock\n");
|
||||
|
||||
return SPI_DEV_STATUS_OK;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
spi_dev_arch_has_lock(spi_device_t *dev)
|
||||
{
|
||||
return dev->bus->lock_device == dev;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
spi_dev_arch_is_bus_locked(spi_device_t *dev)
|
||||
{
|
||||
return dev->bus->lock;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_arch_unlock(spi_device_t *dev)
|
||||
{
|
||||
dev->bus->lock = 0;
|
||||
dev->bus->lock_device = NULL;
|
||||
|
||||
PRINTF("SPI: unlock\n");
|
||||
return SPI_DEV_STATUS_OK;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_arch_restart_timeout(spi_device_t *dev)
|
||||
{
|
||||
/* do nothing at the moment */
|
||||
return SPI_DEV_STATUS_OK;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/* Assumes that checking dev and bus is not NULL before calling this */
|
||||
spi_dev_status_t
|
||||
spi_dev_arch_transfer(spi_device_t *dev,
|
||||
const uint8_t *write_buf, int wlen,
|
||||
uint8_t *inbuf, int rlen, int ignore_len)
|
||||
{
|
||||
int i;
|
||||
int totlen;
|
||||
uint8_t c;
|
||||
uint8_t spi_instance;
|
||||
|
||||
spi_instance = dev->bus->config.instance;
|
||||
|
||||
PRINTF("SPI: transfer (r:%d,w:%d) ", rlen, wlen);
|
||||
|
||||
if(write_buf == NULL && wlen > 0) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
if(inbuf == NULL && rlen > 0) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
totlen = MAX(rlen + ignore_len, wlen);
|
||||
|
||||
if(totlen == 0) {
|
||||
/* Nothing to do */
|
||||
return SPI_DEV_STATUS_OK;
|
||||
}
|
||||
|
||||
PRINTF("%c%c%c: %u ", rlen > 0 ? 'R' : '-', wlen > 0 ? 'W' : '-',
|
||||
ignore_len > 0 ? 'S' : '-', totlen);
|
||||
|
||||
for(i = 0; i < totlen; i++) {
|
||||
spix_wait_tx_ready(spi_instance);
|
||||
c = i < wlen ? write_buf[i] : 0;
|
||||
spix_write_buf(spi_instance, c);
|
||||
PRINTF("%c%02x->", i < rlen ? ' ' : '#', c);
|
||||
spix_wait_eotx(spi_instance);
|
||||
spix_wait_eorx(spi_instance);
|
||||
c = spix_read_buf(spi_instance);
|
||||
if(i < rlen) {
|
||||
inbuf[i] = c;
|
||||
}
|
||||
PRINTF("%02x", c);
|
||||
}
|
||||
|
||||
PRINTF("\n");
|
||||
return SPI_DEV_STATUS_OK;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#endif /* PLATFORM_HAS_SPI_DEV_ARCH */
|
||||
|
|
@ -0,0 +1,44 @@
|
|||
/*
|
||||
* Copyright (c) 2016-2017, Yanzi Networks.
|
||||
* 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 copyright holder 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 HOLDER 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 HOLDER 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 SPI_DEV_ARCH_H_
|
||||
#define SPI_DEV_ARCH_H_
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/* The SPI instance for the CC2538 */
|
||||
typedef struct spi_bus_config {
|
||||
uint8_t instance;
|
||||
} spi_bus_config_t;
|
||||
|
||||
typedef struct spi_device_config {
|
||||
} spi_device_config_t;
|
||||
|
||||
#endif /* SPI_DEV_ARCH_H_ */
|
||||
|
|
@ -0,0 +1,207 @@
|
|||
/*
|
||||
* Copyright (c) 2016-2017, Yanzi Networks.
|
||||
* 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 copyright holder 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 HOLDER 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 HOLDER 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.
|
||||
*/
|
||||
|
||||
#include "dev/spi-dev.h"
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_acquire(spi_device_t *dev)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
/* lock the bus */
|
||||
return spi_dev_arch_lock(dev);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_release(spi_device_t *dev)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
/* unlock the bus */
|
||||
return spi_dev_arch_unlock(dev);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
spi_dev_has_bus(spi_device_t *dev)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return 0;
|
||||
}
|
||||
return spi_dev_arch_has_lock(dev);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_restart_timeout(spi_device_t *dev)
|
||||
{
|
||||
if(!spi_dev_has_bus(dev)) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
return spi_dev_arch_restart_timeout(dev);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_write_byte(spi_device_t *dev, uint8_t data)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
return spi_dev_arch_transfer(dev, &data, 1, 0, 0, 0);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_write(spi_device_t *dev, const uint8_t *data, int size)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
return spi_dev_arch_transfer(dev, data, size, 0, 0, 0);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_read_byte(spi_device_t *dev, uint8_t *buf)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
return spi_dev_arch_transfer(dev, NULL, 0, buf, 1, 0);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_read(spi_device_t *dev, uint8_t *buf, int size)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
return spi_dev_arch_transfer(dev, NULL, 0, buf, size, 0);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_read_skip(spi_device_t *dev, int size)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
return spi_dev_arch_transfer(dev, NULL, 0, NULL, 0, size);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_transfer(spi_device_t *dev,
|
||||
const uint8_t *wdata, int wsize,
|
||||
uint8_t *rbuf, int rsize, int ignore)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
|
||||
if(wdata == NULL && wsize > 0) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(rbuf == NULL && rsize > 0) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
return spi_dev_arch_transfer(dev, wdata, wsize, rbuf, rsize, ignore);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/* Chip select can only be done when the bus is locked to this device */
|
||||
spi_dev_status_t
|
||||
spi_dev_chip_select(spi_device_t *dev, uint8_t on)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
if(spi_dev_has_bus(dev)) {
|
||||
return dev->chip_select(on);
|
||||
}
|
||||
return SPI_DEV_STATUS_BUS_NOT_OWNED;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_read_register(spi_device_t *dev, uint8_t reg, uint8_t *data, int size)
|
||||
{
|
||||
spi_dev_status_t status;
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
/* write the register first (will read a status) */
|
||||
status = spi_dev_write_byte(dev, reg);
|
||||
if(status != SPI_DEV_STATUS_OK) {
|
||||
return status;
|
||||
}
|
||||
/* then read the value (will read the value) */
|
||||
status = spi_dev_read(dev, data, size);
|
||||
if(status != SPI_DEV_STATUS_OK) {
|
||||
return status;
|
||||
}
|
||||
return status;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
spi_dev_status_t
|
||||
spi_dev_strobe(spi_device_t *dev, uint8_t strobe, uint8_t *result)
|
||||
{
|
||||
if(dev == NULL || dev->bus == NULL) {
|
||||
return SPI_DEV_STATUS_EINVAL;
|
||||
}
|
||||
|
||||
if(!spi_dev_arch_has_lock(dev)) {
|
||||
return SPI_DEV_STATUS_BUS_LOCKED;
|
||||
}
|
||||
return spi_dev_arch_transfer(dev, &strobe, 1, result, 1, 0);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
/*
|
||||
* Copyright (c) 2016-2017, Yanzi Networks.
|
||||
* 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 copyright holder 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 HOLDER 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 HOLDER 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 SPI_DEV_H_
|
||||
#define SPI_DEV_H_
|
||||
|
||||
#include "contiki.h"
|
||||
|
||||
#ifdef PLATFORM_HAS_SPI_DEV_ARCH
|
||||
#include "spi-dev-arch.h"
|
||||
#endif
|
||||
|
||||
typedef enum {
|
||||
SPI_DEV_STATUS_OK,
|
||||
SPI_DEV_STATUS_TIMEOUT,
|
||||
SPI_DEV_STATUS_EINVAL,
|
||||
SPI_DEV_STATUS_BUS_LOCKED,
|
||||
SPI_DEV_STATUS_BUS_NOT_OWNED
|
||||
} spi_dev_status_t;
|
||||
|
||||
typedef struct spi_device spi_device_t;
|
||||
|
||||
typedef struct spi_bus {
|
||||
/* for locking the bus */
|
||||
spi_device_t *lock_device;
|
||||
volatile uint8_t lock;
|
||||
#ifdef PLATFORM_HAS_SPI_DEV_ARCH
|
||||
spi_bus_config_t config;
|
||||
#endif /* PLATFORM_HAS_SPI_DEV_ARCH */
|
||||
} spi_bus_t;
|
||||
|
||||
struct spi_device {
|
||||
spi_bus_t *bus;
|
||||
/* timeout in milliseconds for this device */
|
||||
uint16_t timeout;
|
||||
/* chip-select for this SPI chip - 1 = CS */
|
||||
uint8_t (* chip_select)(int on);
|
||||
#ifdef PLATFORM_HAS_SPI_DEV_ARCH
|
||||
spi_device_config_t config;
|
||||
#endif
|
||||
};
|
||||
|
||||
/* call for all spi devices */
|
||||
spi_dev_status_t spi_dev_acquire(spi_device_t *dev);
|
||||
spi_dev_status_t spi_dev_release(spi_device_t *dev);
|
||||
spi_dev_status_t spi_dev_restart_timeout(spi_device_t *dev);
|
||||
int spi_dev_has_bus(spi_device_t *dev);
|
||||
spi_dev_status_t spi_dev_write_byte(spi_device_t *dev, uint8_t data);
|
||||
spi_dev_status_t spi_dev_read_byte(spi_device_t *dev, uint8_t *data);
|
||||
spi_dev_status_t spi_dev_write(spi_device_t *dev,
|
||||
const uint8_t *data, int size);
|
||||
spi_dev_status_t spi_dev_read(spi_device_t *dev, uint8_t *data, int size);
|
||||
spi_dev_status_t spi_dev_read_skip(spi_device_t *dev, int size);
|
||||
spi_dev_status_t spi_dev_transfer(spi_device_t *dev,
|
||||
const uint8_t *data, int wsize,
|
||||
uint8_t *buf, int rsize, int ignore);
|
||||
spi_dev_status_t spi_dev_chip_select(spi_device_t *dev, uint8_t on);
|
||||
spi_dev_status_t spi_dev_strobe(spi_device_t *dev, uint8_t strobe,
|
||||
uint8_t *status);
|
||||
spi_dev_status_t spi_dev_read_register(spi_device_t *dev, uint8_t reg,
|
||||
uint8_t *data, int size);
|
||||
|
||||
/* Arch functions needed per CPU */
|
||||
spi_dev_status_t spi_dev_arch_lock(spi_device_t *dev);
|
||||
spi_dev_status_t spi_dev_arch_unlock(spi_device_t *dev);
|
||||
int spi_dev_arch_has_lock(spi_device_t *dev);
|
||||
int spi_dev_arch_is_bus_locked(spi_device_t *dev);
|
||||
|
||||
/* Initialize the spi bus */
|
||||
spi_dev_status_t spi_dev_arch_init(spi_device_t *dev);
|
||||
spi_dev_status_t spi_dev_arch_transfer(spi_device_t *dev,
|
||||
const uint8_t *data, int wlen,
|
||||
uint8_t *buf, int rlen,
|
||||
int ignore_len);
|
||||
spi_dev_status_t spi_dev_arch_restart_timeout(spi_device_t *dev);
|
||||
|
||||
#endif /* SPI_DEV_H */
|
||||
Loading…
Reference in New Issue