68951e8d72
* Remove multiple newlines at the end of files * Remove the whitespace from the end of lines
789 lines
21 KiB
C
789 lines
21 KiB
C
/******************************************************************************
|
|
* drivers/wireless/spirit/lib/spirit_pktbasic.c
|
|
* Configuration and management of SPIRIT Basic packets.
|
|
*
|
|
* Copyright(c) 2015 STMicroelectronics
|
|
* Author: VMA division - AMS
|
|
* Version 3.2.2 08-July-2015
|
|
*
|
|
* Adapted for NuttX by:
|
|
* 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 of STMicroelectronics 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 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
* Included Files
|
|
******************************************************************************/
|
|
|
|
#include <sys/types.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#include "spirit_pktbasic.h"
|
|
#include "spirit_spi.h"
|
|
|
|
/******************************************************************************
|
|
* Public Functions
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_initialize
|
|
*
|
|
* Description:
|
|
* Initializes the Spirit Basic packet according to the specified parameters
|
|
* in the struct spirit_pktbasic_init_s. Notice that this function sets the
|
|
* autofiltering option on CRC if it is set to any value different from
|
|
* BASIC_NO_CRC.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* pktpasic - Basic packet init structure.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_initialize(FAR struct spirit_library_s *spirit,
|
|
FAR const struct spirit_pktbasic_init_s *pktpasic)
|
|
{
|
|
uint8_t regval[4];
|
|
uint8_t pktlenwidth;
|
|
uint8_t i;
|
|
int ret;
|
|
|
|
/* Check the parameters */
|
|
|
|
DEBUGASSERT(IS_PKT_PREAMBLE_LENGTH(pktpasic->preamblen));
|
|
DEBUGASSERT(IS_PKT_SYNC_LENGTH(pktpasic->synclen));
|
|
DEBUGASSERT(IS_PKT_CRC_MODE(pktpasic->crcmode));
|
|
DEBUGASSERT(IS_PKT_LENGTH_WIDTH_BITS(pktpasic->pktlenwidth));
|
|
DEBUGASSERT(IS_PKT_FIX_VAR_LENGTH(pktpasic->fixvarlen));
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(pktpasic->txdestaddr));
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(pktpasic->fec));
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(pktpasic->datawhite));
|
|
DEBUGASSERT(IS_PKT_CONTROL_LENGTH(pktpasic->ctrllen));
|
|
|
|
/* Reads the PROTOCOL1 register */
|
|
|
|
ret = spirit_reg_read(spirit, PROTOCOL1_BASE, ®val[0], 1);
|
|
|
|
/* Mask a reserved bit */
|
|
|
|
regval[0] &= ~0x20;
|
|
|
|
/* Always set the automatic packet filtering */
|
|
|
|
regval[0] |= PROTOCOL1_AUTO_PCKT_FLT_MASK;
|
|
|
|
/* Writes the value on register */
|
|
|
|
ret = spirit_reg_write(spirit, PROTOCOL1_BASE, ®val[0], 1);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Reads the PCKT_FLT_OPTIONS register */
|
|
|
|
ret = spirit_reg_read(spirit, PCKT_FLT_OPTIONS_BASE, ®val[0], 1);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Always reset the control and source filtering (also if it is not present
|
|
* in basic).
|
|
*/
|
|
|
|
regval[0] &= ~(PCKT_FLT_OPTIONS_SOURCE_FILTERING_MASK |
|
|
PCKT_FLT_OPTIONS_CONTROL_FILTERING_MASK);
|
|
|
|
/* Writes the value on register */
|
|
|
|
ret = spirit_reg_write(spirit, PCKT_FLT_OPTIONS_BASE, ®val[0], 1);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
if (pktpasic->txdestaddr == S_ENABLE)
|
|
{
|
|
regval[0] = 0x08;
|
|
}
|
|
else
|
|
{
|
|
regval[0] = 0x00;
|
|
}
|
|
|
|
/* Address and control length setting */
|
|
|
|
regval[0] |= (uint8_t)pktpasic->ctrllen;
|
|
|
|
/* Packet format and width length setting */
|
|
|
|
pktlenwidth = pktpasic->pktlenwidth;
|
|
if (pktlenwidth == 0)
|
|
{
|
|
pktlenwidth = 1;
|
|
}
|
|
|
|
regval[1] = (uint8_t)PCKTCTRL3_PCKT_FRMT_BASIC | (uint8_t)(pktlenwidth - 1);
|
|
|
|
/* Preamble, sync and fixed or variable length setting */
|
|
|
|
regval[2] = (uint8_t)pktpasic->preamblen | (uint8_t)pktpasic->synclen |
|
|
(uint8_t)pktpasic->fixvarlen;
|
|
|
|
/* CRC length, whitening and FEC setting */
|
|
|
|
regval[3] = (uint8_t)pktpasic->crcmode;
|
|
|
|
if (pktpasic->datawhite == S_ENABLE)
|
|
{
|
|
regval[3] |= PCKTCTRL1_WHIT_MASK;
|
|
}
|
|
|
|
if (pktpasic->fec == S_ENABLE)
|
|
{
|
|
regval[3] |= PCKTCTRL1_FEC_MASK;
|
|
}
|
|
|
|
/* Writes registers */
|
|
|
|
ret = spirit_reg_write(spirit, PCKTCTRL4_BASE, regval, 4);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Sync words setting */
|
|
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
if (i < 3 - (pktpasic->synclen >> 1))
|
|
{
|
|
regval[i] = 0;
|
|
}
|
|
else
|
|
{
|
|
regval[i] = (uint8_t)(pktpasic->syncwords >> (8 * i));
|
|
}
|
|
}
|
|
|
|
/* Sets CRC check bit */
|
|
|
|
if (pktpasic->crcmode == PKT_NO_CRC)
|
|
{
|
|
ret = spirit_pktcommon_enable_crcfilter(spirit, S_DISABLE);
|
|
}
|
|
else
|
|
{
|
|
ret = spirit_pktcommon_enable_crcfilter(spirit, S_ENABLE);
|
|
}
|
|
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
return spirit_reg_write(spirit, SYNC4_BASE, regval, 4);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_get_setup
|
|
*
|
|
* Description:
|
|
* Returns the SPIRIT Basic packet structure according to the specified
|
|
* parameters in the registers.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* pktbasic - Basic packet init structure.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_get_setup(FAR struct spirit_library_s *spirit,
|
|
FAR struct spirit_pktbasic_init_s *pktbasic)
|
|
{
|
|
uint8_t regval[10];
|
|
int ret;
|
|
int i;
|
|
|
|
/* Reads registers */
|
|
|
|
ret = spirit_reg_read(spirit, PCKTCTRL4_BASE, regval, 10);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Length width */
|
|
|
|
pktbasic->pktlenwidth = (regval[1] & 0x0f) + 1;
|
|
|
|
/* Address field */
|
|
|
|
pktbasic->txdestaddr =
|
|
(enum spirit_functional_state_e)((regval[0] >> 3) & 0x01);
|
|
|
|
/* Control length */
|
|
|
|
pktbasic->ctrllen = (enum pkt_ctrllen_e)(regval[0] & 0x07);
|
|
|
|
/* CRC mode */
|
|
|
|
pktbasic->crcmode = (enum pkt_crcmode_e)(regval[3] & 0xe0);
|
|
|
|
/* Whitening */
|
|
|
|
pktbasic->datawhite =
|
|
(enum spirit_functional_state_e) ((regval[3] >> 4) & 0x01);
|
|
|
|
/* FEC */
|
|
|
|
pktbasic->fec = (enum spirit_functional_state_e)(regval[3] & 0x01);
|
|
|
|
/* FIX or VAR bit */
|
|
|
|
pktbasic->fixvarlen = (enum pkt_fixvar_len_e)(regval[2] & 0x01);
|
|
|
|
/* Preamble length */
|
|
|
|
pktbasic->preamblen = (enum pkt_preamblen_e)(regval[2] & 0xf8);
|
|
|
|
/* Sync length */
|
|
|
|
pktbasic->synclen = (enum pkt_synlen_e)(regval[2] & 0x06);
|
|
|
|
/* Sync Words */
|
|
|
|
pktbasic->syncwords = 0;
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
if (i > 2 - (((uint8_t)pktbasic->synclen) >> 1))
|
|
{
|
|
pktbasic->syncwords |= (uint32_t) (regval[i + 6]) << (8 * i);
|
|
}
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_addr_initialize
|
|
*
|
|
* Description:
|
|
* Initializes the SPIRIT Basic packet addresses according to the specified
|
|
* parameters in the struct struct spirit_pktbasic_init_s struct.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* basicaddr - Basic packet addresses init structure.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_addr_initialize(FAR struct spirit_library_s *spirit,
|
|
FAR struct spirit_pktbasic_addr_s *basicaddr)
|
|
{
|
|
uint8_t regval[3];
|
|
int ret;
|
|
|
|
/* Check the parameters */
|
|
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(basicaddr->destfilter));
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(basicaddr->mcastfilter));
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(basicaddr->bcastfilter));
|
|
|
|
/* Reads the PCKT_FLT_OPTIONS ragister */
|
|
|
|
ret = spirit_reg_read(spirit, PCKT_FLT_OPTIONS_BASE, ®val[0], 1);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Enables or disables filtering on my address */
|
|
|
|
if (basicaddr->destfilter == S_ENABLE)
|
|
{
|
|
regval[0] |= PCKT_FLT_OPTIONS_DEST_VS_TX_ADDR_MASK;
|
|
}
|
|
else
|
|
{
|
|
regval[0] &= ~PCKT_FLT_OPTIONS_DEST_VS_TX_ADDR_MASK;
|
|
}
|
|
|
|
/* Enables or disables filtering on multicast address */
|
|
|
|
if (basicaddr->mcastfilter == S_ENABLE)
|
|
{
|
|
regval[0] |= PCKT_FLT_OPTIONS_DEST_VS_MULTICAST_ADDR_MASK;
|
|
}
|
|
else
|
|
{
|
|
regval[0] &= ~PCKT_FLT_OPTIONS_DEST_VS_MULTICAST_ADDR_MASK;
|
|
}
|
|
|
|
/* Enables or disables filtering on broadcast address */
|
|
|
|
if (basicaddr->bcastfilter == S_ENABLE)
|
|
{
|
|
regval[0] |= PCKT_FLT_OPTIONS_DEST_VS_BROADCAST_ADDR_MASK;
|
|
}
|
|
else
|
|
{
|
|
regval[0] &= ~PCKT_FLT_OPTIONS_DEST_VS_BROADCAST_ADDR_MASK;
|
|
}
|
|
|
|
/* Writes the new value on the PCKT_FLT_OPTIONS register */
|
|
|
|
ret = spirit_reg_write(spirit, PCKT_FLT_OPTIONS_BASE, ®val[0], 1);
|
|
|
|
/* Fills the array with the addresses passed in the structure */
|
|
|
|
regval[0] = basicaddr->bcastaddr;
|
|
regval[1] = basicaddr->mcastaddr;
|
|
regval[2] = basicaddr->srcaddr;
|
|
|
|
/* Writes values on the PCKT_FLT_GOALS registers */
|
|
|
|
return spirit_reg_write(spirit, PCKT_FLT_GOALS_BROADCAST_BASE, regval, 3);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_get_addrsetup
|
|
*
|
|
* Description:
|
|
* Returns the SPIRIT Basic packet addresses structure according to the
|
|
* specified parameters in the registers.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* basicaddr - Basic packet addresses init structure.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_get_addrsetup(FAR struct spirit_library_s *spirit,
|
|
FAR struct spirit_pktbasic_addr_s *basicaddr)
|
|
{
|
|
uint8_t regval[3];
|
|
int ret;
|
|
|
|
/* Reads values on the PCKT_FLT_GOALS registers */
|
|
|
|
ret = spirit_reg_read(spirit, PCKT_FLT_GOALS_BROADCAST_BASE, regval, 3);
|
|
if (ret >= 0)
|
|
{
|
|
/* Fit the structure with the read addresses */
|
|
|
|
basicaddr->bcastaddr = regval[0];
|
|
basicaddr->mcastaddr = regval[1];
|
|
basicaddr->srcaddr = regval[2];
|
|
|
|
ret = spirit_reg_read(spirit, PCKT_FLT_OPTIONS_BASE, ®val[0], 1);
|
|
if (ret >= 0)
|
|
{
|
|
/* Fit the structure with the read filtering bits */
|
|
|
|
basicaddr->bcastfilter =
|
|
(enum spirit_functional_state_e)((regval[0] >> 1) & 0x01);
|
|
basicaddr->mcastfilter =
|
|
(enum spirit_functional_state_e)((regval[0] >> 2) & 0x01);
|
|
basicaddr->destfilter =
|
|
(enum spirit_functional_state_e)((regval[0] >> 3) & 0x01);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_set_format
|
|
*
|
|
* Description:
|
|
* Configures the Basic packet format as packet used by SPIRIT.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_set_format(FAR struct spirit_library_s *spirit)
|
|
{
|
|
uint8_t regval;
|
|
int ret;
|
|
|
|
/* Reads the register value */
|
|
|
|
ret = spirit_reg_read(spirit, PCKTCTRL3_BASE, ®val, 1);
|
|
if (ret >= 0)
|
|
{
|
|
/* Build the new value. Also set to 0 the direct RX mode bits */
|
|
|
|
regval &= 0x0f;
|
|
regval |= (uint8_t) PCKTCTRL3_PCKT_FRMT_BASIC;
|
|
|
|
/* Write the value to the PCKTCTRL3 register */
|
|
|
|
ret = spirit_reg_write(spirit, PCKTCTRL3_BASE, ®val, 1);
|
|
}
|
|
|
|
if (ret >= 0)
|
|
{
|
|
/* Reads the PCKTCTRL1_BASE register */
|
|
|
|
ret = spirit_reg_read(spirit, PCKTCTRL1_BASE, ®val, 1);
|
|
if (ret >= 0)
|
|
{
|
|
/* Build the new value. Set to 0 the direct TX mode bits */
|
|
|
|
regval &= 0xf3;
|
|
|
|
/* Write the value to the PCKTCTRL1 register */
|
|
|
|
ret = spirit_reg_write(spirit, PCKTCTRL1_BASE, ®val, 1);
|
|
}
|
|
}
|
|
|
|
if (ret >= 0)
|
|
{
|
|
/* Reads the PROTOCOL1 register */
|
|
|
|
ret = spirit_reg_read(spirit, PROTOCOL1_BASE, ®val, 1);
|
|
if (ret >= 0)
|
|
{
|
|
/* Mask a reserved bit */
|
|
|
|
regval &= ~0x20;
|
|
|
|
/* Write the value to the register */
|
|
|
|
ret = spirit_reg_write(spirit, PROTOCOL1_BASE, ®val, 1);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pkbasic_enable_addrlen
|
|
*
|
|
* Description:
|
|
* Sets the address length for SPIRIT Basic packets.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* txdestaddr - Enable/disable address field
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value on failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pkbasic_enable_addrlen(FAR struct spirit_library_s *spirit,
|
|
enum spirit_functional_state_e txdestaddr)
|
|
{
|
|
uint8_t regval;
|
|
int ret;
|
|
|
|
/* Check the parameters */
|
|
|
|
DEBUGASSERT(IS_SPIRIT_FUNCTIONAL_STATE(txdestaddr));
|
|
|
|
/* Reads the PCKTCTRL4 register value */
|
|
|
|
ret = spirit_reg_read(spirit, PCKTCTRL4_BASE, ®val, 1);
|
|
if (ret >= 0)
|
|
{
|
|
/* Build the address length for the register */
|
|
|
|
if (txdestaddr == S_ENABLE)
|
|
{
|
|
regval |= 0x08;
|
|
}
|
|
else
|
|
{
|
|
regval &= 0x07;
|
|
}
|
|
|
|
/* Writes the new value on the PCKTCTRL4 register */
|
|
|
|
ret = spirit_reg_write(spirit, PCKTCTRL4_BASE, ®val, 1);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pkbasic_isenabled_addrlen
|
|
*
|
|
* Description:
|
|
* Specifies if the Address field for SPIRIT Basic packets is enabled or
|
|
* disabled.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
*
|
|
* Returned Value:
|
|
* Notifies if the address field is enabled or disabled.
|
|
*
|
|
******************************************************************************/
|
|
|
|
enum spirit_functional_state_e
|
|
spirit_pkbasic_isenabled_addrlen(FAR struct spirit_library_s *spirit)
|
|
{
|
|
uint8_t regval;
|
|
|
|
/* Reads the PCKTCTRL4 register value */
|
|
|
|
spirit_reg_read(spirit, PCKTCTRL4_BASE, ®val, 1);
|
|
|
|
/* Returns the address field value */
|
|
|
|
if ((regval & PCKTCTRL4_ADDRESS_LEN_MASK) != 0)
|
|
{
|
|
return S_ENABLE;
|
|
}
|
|
else
|
|
{
|
|
return S_DISABLE;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_set_payloadlen
|
|
*
|
|
* Description:
|
|
* Sets the payload length for SPIRIT Basic packets. Since the packet length
|
|
* depends from the address and the control field size, this function reads
|
|
* the correspondent registers in order to determine the correct packet
|
|
* length to be written.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* payloadlen - Payload length in bytes.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value is returned on any failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_set_payloadlen(FAR struct spirit_library_s *spirit,
|
|
uint16_t payloadlen)
|
|
{
|
|
uint8_t regval[2];
|
|
uint16_t oversize = 0;
|
|
|
|
/* Computes the oversize (address + control) size */
|
|
|
|
if (spirit_pkbasic_isenabled_addrlen(spirit))
|
|
{
|
|
oversize = 1;
|
|
}
|
|
|
|
oversize += (uint16_t)spirit_pktcommon_get_controllen(spirit);
|
|
|
|
/* Computes PCKTLEN0 value from payloadlen */
|
|
|
|
regval[1] = BUILD_PCKTLEN0(payloadlen + oversize);
|
|
|
|
/* Computes PCKTLEN1 value from payloadlen */
|
|
|
|
regval[0] = BUILD_PCKTLEN1(payloadlen + oversize);
|
|
|
|
/* Writes data on the PCKTLEN1/0 register */
|
|
|
|
return spirit_reg_write(spirit, PCKTLEN1_BASE, regval, 2);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbase_get_payloadlen
|
|
*
|
|
* Description:
|
|
* Returns the payload length for SPIRIT Basic packets. Since the packet
|
|
* length depends from the address and the control field size, this function
|
|
* reads the correspondent registers in order to determine the correct
|
|
* payload length to be returned.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
*
|
|
* Returned Value:
|
|
* Payload length in bytes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
uint16_t spirit_pktbase_get_payloadlen(FAR struct spirit_library_s *spirit)
|
|
{
|
|
uint8_t regval[2];
|
|
uint16_t oversize = 0;
|
|
|
|
/* Computes the oversize (address + control) size */
|
|
|
|
if (spirit_pkbasic_isenabled_addrlen(spirit))
|
|
{
|
|
oversize = 1;
|
|
}
|
|
|
|
oversize += (uint16_t)spirit_pktcommon_get_controllen(spirit);
|
|
|
|
/* Reads the packet length registers */
|
|
|
|
spirit_reg_read(spirit, PCKTLEN1_BASE, regval, 2);
|
|
|
|
/* Returns the packet length */
|
|
|
|
return ((((uint16_t) regval[0]) << 8) + (uint16_t) regval[1]) - oversize;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_get_rxpktlen
|
|
*
|
|
* Description:
|
|
* Returns the packet length field of the received packet.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
*
|
|
* Returned Value:
|
|
* Rx Packet length.
|
|
*
|
|
******************************************************************************/
|
|
|
|
uint16_t spirit_pktbasic_get_rxpktlen(FAR struct spirit_library_s *spirit)
|
|
{
|
|
uint8_t regval[2];
|
|
uint16_t oversize = 0;
|
|
|
|
/* Computes the oversize (address + control) size */
|
|
|
|
if (spirit_pkbasic_isenabled_addrlen(spirit))
|
|
{
|
|
oversize = 1;
|
|
}
|
|
|
|
oversize += (uint16_t)spirit_pktcommon_get_controllen(spirit);
|
|
|
|
/* Reads the RX_PCKT_LENx registers value */
|
|
|
|
spirit_reg_read(spirit, RX_PCKT_LEN1_BASE, regval, 2);
|
|
|
|
/* Rebuild and return the length field */
|
|
|
|
return (((((uint16_t) regval[0]) << 8) + (uint16_t)regval[1]) - oversize);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* Name: spirit_pktbasic_set_varlen
|
|
*
|
|
* Description:
|
|
* Computes and sets the variable payload length for SPIRIT Basic packets.
|
|
*
|
|
* Input Parameters:
|
|
* spirit - Reference to a Spirit library state structure instance
|
|
* payloadlen - Payload length in bytes.
|
|
* txdestaddr - Enable or disable address field.
|
|
* ctrllen - Control length in bytes.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) on success; a negated errno value is returned on any failure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
int spirit_pktbasic_set_varlen(FAR struct spirit_library_s *spirit,
|
|
uint16_t payloadlen,
|
|
enum spirit_functional_state_e txdestaddr,
|
|
enum pkt_ctrllen_e ctrllen)
|
|
{
|
|
uint32_t pktlen;
|
|
uint8_t regval;
|
|
uint8_t addrlen;
|
|
int ret;
|
|
int i;
|
|
|
|
/* Sets the address length according to txdestaddr */
|
|
|
|
if (txdestaddr == S_ENABLE)
|
|
{
|
|
addrlen = 1;
|
|
}
|
|
else
|
|
{
|
|
addrlen = 0;
|
|
}
|
|
|
|
/* packet length = payload length + address length + control length */
|
|
|
|
pktlen = payloadlen + addrlen + ctrllen;
|
|
|
|
/* Computes the number of bits */
|
|
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
if (pktlen == 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
pktlen >>= 1;
|
|
}
|
|
|
|
if (i == 0)
|
|
{
|
|
i = 1;
|
|
}
|
|
|
|
/* Reads the PCKTCTRL3 register value */
|
|
|
|
ret = spirit_reg_read(spirit, PCKTCTRL3_BASE, ®val, 1);
|
|
if (ret >= 0)
|
|
{
|
|
/* Build value for the length width */
|
|
|
|
regval &= ~PCKTCTRL3_LEN_WID_MASK;
|
|
regval |= (uint8_t)(i - 1);
|
|
|
|
/* Write to the PCKTCTRL3 register value */
|
|
|
|
ret = spirit_reg_write(spirit, PCKTCTRL3_BASE, ®val, 1);
|
|
}
|
|
|
|
return ret;
|
|
}
|