1108 lines
37 KiB
C
1108 lines
37 KiB
C
/*
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* CANopen LSS Master protocol.
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*
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* @file CO_LSSmaster.c
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* @ingroup CO_LSS
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* @author Martin Wagner
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* @copyright 2017 - 2020 Neuberger Gebaeudeautomation GmbH
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*
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*
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* This file is part of CANopenNode, an opensource CANopen Stack.
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* Project home page is <https://github.com/CANopenNode/CANopenNode>.
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* For more information on CANopen see <http://www.can-cia.org/>.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "CANopen.h"
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#include "CO_LSSmaster.h"
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#if CO_NO_LSS_CLIENT == 1
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/*
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* LSS master slave select state machine. Compared to #CO_LSS_state_t this
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* has information if we currently have selected one or all slaves. This
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* allows for some basic error checking.
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*/
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typedef enum {
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CO_LSSmaster_STATE_WAITING = 0,
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CO_LSSmaster_STATE_CFG_SLECTIVE,
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CO_LSSmaster_STATE_CFG_GLOBAL,
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} CO_LSSmaster_state_t;
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/*
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* LSS master slave command state machine
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*/
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typedef enum {
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CO_LSSmaster_COMMAND_WAITING = 0,
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CO_LSSmaster_COMMAND_SWITCH_STATE,
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CO_LSSmaster_COMMAND_CFG_BIT_TIMING,
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CO_LSSmaster_COMMAND_CFG_NODE_ID,
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CO_LSSmaster_COMMAND_CFG_STORE,
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CO_LSSmaster_COMMAND_INQUIRE_VENDOR,
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CO_LSSmaster_COMMAND_INQUIRE_PRODUCT,
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CO_LSSmaster_COMMAND_INQUIRE_REV,
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CO_LSSmaster_COMMAND_INQUIRE_SERIAL,
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CO_LSSmaster_COMMAND_INQUIRE_NODE_ID,
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CO_LSSmaster_COMMAND_IDENTIFY_FASTSCAN,
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} CO_LSSmaster_command_t;
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/*
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* LSS master fastscan state machine
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*/
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typedef enum {
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CO_LSSmaster_FS_STATE_CHECK,
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CO_LSSmaster_FS_STATE_SCAN,
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CO_LSSmaster_FS_STATE_VERIFY
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} CO_LSSmaster_fs_t;
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/*
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* Read received message from CAN module.
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*
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* Function will be called (by CAN receive interrupt) every time, when CAN
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* message with correct identifier will be received. For more information and
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* description of parameters see file CO_driver.h.
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*/
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static void CO_LSSmaster_receive(void *object, const CO_CANrxMsg_t *msg)
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{
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CO_LSSmaster_t *LSSmaster;
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LSSmaster = (CO_LSSmaster_t*)object; /* this is the correct pointer type of the first argument */
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/* verify message length and message overflow (previous message was not processed yet) */
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if(msg->DLC==8 && !IS_CANrxNew(LSSmaster->CANrxNew) &&
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LSSmaster->command!=CO_LSSmaster_COMMAND_WAITING){
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/* copy data and set 'new message' flag */
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LSSmaster->CANrxData[0] = msg->data[0];
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LSSmaster->CANrxData[1] = msg->data[1];
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LSSmaster->CANrxData[2] = msg->data[2];
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LSSmaster->CANrxData[3] = msg->data[3];
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LSSmaster->CANrxData[4] = msg->data[4];
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LSSmaster->CANrxData[5] = msg->data[5];
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LSSmaster->CANrxData[6] = msg->data[6];
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LSSmaster->CANrxData[7] = msg->data[7];
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SET_CANrxNew(LSSmaster->CANrxNew);
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/* Optional signal to RTOS, which can resume task, which handles SDO client. */
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if(LSSmaster->pFunctSignal != NULL) {
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LSSmaster->pFunctSignal(LSSmaster->functSignalObject);
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}
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}
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}
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/*
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* Check LSS timeout.
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*
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* Generally, we do not really care if the message has been received before
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* or after the timeout expired. Only if no message has been received we have
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* to check for timeouts
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*/
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static CO_LSSmaster_return_t CO_LSSmaster_check_timeout(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeDifference_ms)
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{
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CO_LSSmaster_return_t ret = CO_LSSmaster_WAIT_SLAVE;
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LSSmaster->timeoutTimer += timeDifference_ms;
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if (LSSmaster->timeoutTimer >= LSSmaster->timeout) {
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LSSmaster->timeoutTimer = 0;
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ret = CO_LSSmaster_TIMEOUT;
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}
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return ret;
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}
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/******************************************************************************/
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CO_ReturnError_t CO_LSSmaster_init(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeout_ms,
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CO_CANmodule_t *CANdevRx,
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uint16_t CANdevRxIdx,
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uint32_t CANidLssSlave,
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CO_CANmodule_t *CANdevTx,
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uint16_t CANdevTxIdx,
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uint32_t CANidLssMaster)
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{
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/* verify arguments */
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if (LSSmaster==NULL || CANdevRx==NULL || CANdevTx==NULL){
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return CO_ERROR_ILLEGAL_ARGUMENT;
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}
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LSSmaster->timeout = timeout_ms;
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LSSmaster->state = CO_LSSmaster_STATE_WAITING;
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LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
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LSSmaster->timeoutTimer = 0;
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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CO_memset(LSSmaster->CANrxData, 0, sizeof(LSSmaster->CANrxData));
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LSSmaster->pFunctSignal = NULL;
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LSSmaster->functSignalObject = NULL;
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/* configure LSS CAN Slave response message reception */
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CO_CANrxBufferInit(
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CANdevRx, /* CAN device */
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CANdevRxIdx, /* rx buffer index */
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CANidLssSlave, /* CAN identifier */
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0x7FF, /* mask */
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0, /* rtr */
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(void*)LSSmaster, /* object passed to receive function */
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CO_LSSmaster_receive);/* this function will process received message */
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/* configure LSS CAN Master message transmission */
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LSSmaster->CANdevTx = CANdevTx;
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LSSmaster->TXbuff = CO_CANtxBufferInit(
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CANdevTx, /* CAN device */
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CANdevTxIdx, /* index of specific buffer inside CAN module */
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CANidLssMaster, /* CAN identifier */
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0, /* rtr */
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8, /* number of data bytes */
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0); /* synchronous message flag bit */
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return CO_ERROR_NO;
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}
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/******************************************************************************/
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void CO_LSSmaster_changeTimeout(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeout_ms)
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{
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if (LSSmaster != NULL) {
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LSSmaster->timeout = timeout_ms;
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}
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}
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/******************************************************************************/
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void CO_LSSmaster_initCallback(
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CO_LSSmaster_t *LSSmaster,
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void *object,
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void (*pFunctSignal)(void *object))
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{
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if(LSSmaster != NULL){
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LSSmaster->functSignalObject = object;
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LSSmaster->pFunctSignal = pFunctSignal;
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}
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}
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/*
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* Helper function - initiate switch state
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*/
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static CO_LSSmaster_return_t CO_LSSmaster_switchStateSelectInitiate(
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CO_LSSmaster_t *LSSmaster,
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CO_LSS_address_t *lssAddress)
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{
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CO_LSSmaster_return_t ret;
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if (lssAddress != NULL) {
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/* switch state select specific using LSS address */
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LSSmaster->state = CO_LSSmaster_STATE_CFG_SLECTIVE;
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LSSmaster->command = CO_LSSmaster_COMMAND_SWITCH_STATE;
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LSSmaster->timeoutTimer = 0;
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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CO_memset(&LSSmaster->TXbuff->data[6], 0, 3);
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LSSmaster->TXbuff->data[0] = CO_LSS_SWITCH_STATE_SEL_VENDOR;
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CO_setUint32(&LSSmaster->TXbuff->data[1], lssAddress->identity.vendorID);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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LSSmaster->TXbuff->data[0] = CO_LSS_SWITCH_STATE_SEL_PRODUCT;
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CO_setUint32(&LSSmaster->TXbuff->data[1], lssAddress->identity.productCode);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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LSSmaster->TXbuff->data[0] = CO_LSS_SWITCH_STATE_SEL_REV;
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CO_setUint32(&LSSmaster->TXbuff->data[1], lssAddress->identity.revisionNumber);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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LSSmaster->TXbuff->data[0] = CO_LSS_SWITCH_STATE_SEL_SERIAL;
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CO_setUint32(&LSSmaster->TXbuff->data[1], lssAddress->identity.serialNumber);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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ret = CO_LSSmaster_WAIT_SLAVE;
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}
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else {
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/* switch state global */
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LSSmaster->state = CO_LSSmaster_STATE_CFG_GLOBAL;
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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LSSmaster->TXbuff->data[0] = CO_LSS_SWITCH_STATE_GLOBAL;
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LSSmaster->TXbuff->data[1] = CO_LSS_STATE_CONFIGURATION;
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CO_memset(&LSSmaster->TXbuff->data[2], 0, 6);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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/* This is non-confirmed service! */
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ret = CO_LSSmaster_OK;
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}
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return ret;
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}
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/*
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* Helper function - wait for confirmation
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*/
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static CO_LSSmaster_return_t CO_LSSmaster_switchStateSelectWait(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeDifference_ms)
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{
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CO_LSSmaster_return_t ret;
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if (IS_CANrxNew(LSSmaster->CANrxNew)) {
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uint8_t cs = LSSmaster->CANrxData[0];
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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if (cs == CO_LSS_SWITCH_STATE_SEL) {
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/* confirmation received */
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ret = CO_LSSmaster_OK;
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}
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else {
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ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
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}
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}
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else {
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ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
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}
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return ret;
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}
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/******************************************************************************/
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CO_LSSmaster_return_t CO_LSSmaster_switchStateSelect(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeDifference_ms,
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CO_LSS_address_t *lssAddress)
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{
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CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
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if (LSSmaster == NULL){
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return CO_LSSmaster_ILLEGAL_ARGUMENT;
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}
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/* Initiate select */
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if (LSSmaster->state==CO_LSSmaster_STATE_WAITING &&
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LSSmaster->command==CO_LSSmaster_COMMAND_WAITING){
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ret = CO_LSSmaster_switchStateSelectInitiate(LSSmaster, lssAddress);
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}
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/* Wait for confirmation */
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else if (LSSmaster->command == CO_LSSmaster_COMMAND_SWITCH_STATE) {
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ret = CO_LSSmaster_switchStateSelectWait(LSSmaster, timeDifference_ms);
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}
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if (ret!=CO_LSSmaster_INVALID_STATE && ret!=CO_LSSmaster_WAIT_SLAVE) {
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/* finished */
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LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
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}
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if (ret < CO_LSSmaster_OK) {
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/* switching failed, go back to waiting */
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LSSmaster->state=CO_LSSmaster_STATE_WAITING;
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LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
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}
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return ret;
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}
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/******************************************************************************/
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CO_LSSmaster_return_t CO_LSSmaster_switchStateDeselect(
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CO_LSSmaster_t *LSSmaster)
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{
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CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
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if (LSSmaster == NULL){
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return CO_LSSmaster_ILLEGAL_ARGUMENT;
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}
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/* We can always send this command to get into a clean state on the network.
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* If no slave is selected, this command is ignored. */
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LSSmaster->state = CO_LSSmaster_STATE_WAITING;
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LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
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LSSmaster->timeoutTimer = 0;
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/* switch state global */
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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LSSmaster->TXbuff->data[0] = CO_LSS_SWITCH_STATE_GLOBAL;
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LSSmaster->TXbuff->data[1] = CO_LSS_STATE_WAITING;
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CO_memset(&LSSmaster->TXbuff->data[2], 0, 6);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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/* This is non-confirmed service! */
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ret = CO_LSSmaster_OK;
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return ret;
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}
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/*
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* Helper function - wait for confirmation, check for returned error code
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*
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* This uses the nature of the configure confirmation message design:
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* - byte 0 -> cs
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* - byte 1 -> Error Code, where
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* - 0 = OK
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* - 1 .. FE = Values defined by CiA. All currently defined values
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* are slave rejects. No further distinction on why the
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* slave did reject the request.
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* - FF = Manufacturer Error Code in byte 2
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* - byte 2 -> Manufacturer Error, currently not used
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*
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* enums for the errorCode are
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* - CO_LSS_cfgNodeId_t
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* - CO_LSS_cfgBitTiming_t
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* - CO_LSS_cfgStore_t
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*/
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static CO_LSSmaster_return_t CO_LSSmaster_configureCheckWait(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeDifference_ms,
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uint8_t csWait)
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{
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CO_LSSmaster_return_t ret;
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if (IS_CANrxNew(LSSmaster->CANrxNew)) {
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uint8_t cs = LSSmaster->CANrxData[0];
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uint8_t errorCode = LSSmaster->CANrxData[1];
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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if (cs == csWait) {
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if (errorCode == 0) {
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ret = CO_LSSmaster_OK;
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}
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else if (errorCode == 0xff) {
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ret = CO_LSSmaster_OK_MANUFACTURER;
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}
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else {
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ret = CO_LSSmaster_OK_ILLEGAL_ARGUMENT;
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}
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}
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else {
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ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
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}
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}
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else {
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ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
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}
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if (ret!=CO_LSSmaster_INVALID_STATE && ret!=CO_LSSmaster_WAIT_SLAVE) {
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/* finished */
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LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
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}
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return ret;
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}
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/******************************************************************************/
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CO_LSSmaster_return_t CO_LSSmaster_configureBitTiming(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeDifference_ms,
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uint16_t bit)
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{
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CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
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uint8_t bitTiming;
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if (LSSmaster == NULL){
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return CO_LSSmaster_ILLEGAL_ARGUMENT;
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}
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switch (bit) {
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case 1000: bitTiming = CO_LSS_BIT_TIMING_1000; break;
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case 800: bitTiming = CO_LSS_BIT_TIMING_800; break;
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case 500: bitTiming = CO_LSS_BIT_TIMING_500; break;
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case 250: bitTiming = CO_LSS_BIT_TIMING_250; break;
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case 125: bitTiming = CO_LSS_BIT_TIMING_125; break;
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case 50: bitTiming = CO_LSS_BIT_TIMING_50; break;
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case 20: bitTiming = CO_LSS_BIT_TIMING_20; break;
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case 10: bitTiming = CO_LSS_BIT_TIMING_10; break;
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case 0: bitTiming = CO_LSS_BIT_TIMING_AUTO; break;
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default: return CO_LSSmaster_ILLEGAL_ARGUMENT;
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}
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/* Initiate config bit */
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if (LSSmaster->state==CO_LSSmaster_STATE_CFG_SLECTIVE &&
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LSSmaster->command==CO_LSSmaster_COMMAND_WAITING){
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LSSmaster->command = CO_LSSmaster_COMMAND_CFG_BIT_TIMING;
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LSSmaster->timeoutTimer = 0;
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CLEAR_CANrxNew(LSSmaster->CANrxNew);
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LSSmaster->TXbuff->data[0] = CO_LSS_CFG_BIT_TIMING;
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LSSmaster->TXbuff->data[1] = 0;
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LSSmaster->TXbuff->data[2] = bitTiming;
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CO_memset(&LSSmaster->TXbuff->data[3], 0, 5);
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CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
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ret = CO_LSSmaster_WAIT_SLAVE;
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}
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/* Wait for confirmation */
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else if (LSSmaster->command == CO_LSSmaster_COMMAND_CFG_BIT_TIMING) {
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ret = CO_LSSmaster_configureCheckWait(LSSmaster, timeDifference_ms,
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CO_LSS_CFG_BIT_TIMING);
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}
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if (ret!=CO_LSSmaster_INVALID_STATE && ret!=CO_LSSmaster_WAIT_SLAVE) {
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/* finished */
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LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
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}
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return ret;
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}
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/******************************************************************************/
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CO_LSSmaster_return_t CO_LSSmaster_configureNodeId(
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CO_LSSmaster_t *LSSmaster,
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uint16_t timeDifference_ms,
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uint8_t nodeId)
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{
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CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
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if (LSSmaster==NULL || !CO_LSS_NODE_ID_VALID(nodeId)){
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return CO_LSSmaster_ILLEGAL_ARGUMENT;
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}
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/* Initiate config node ID */
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if ((LSSmaster->state==CO_LSSmaster_STATE_CFG_SLECTIVE ||
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/* Let un-config node ID also be run in global mode for unconfiguring all nodes */
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(LSSmaster->state==CO_LSSmaster_STATE_CFG_GLOBAL &&
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nodeId == CO_LSS_NODE_ID_ASSIGNMENT)) &&
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|
LSSmaster->command==CO_LSSmaster_COMMAND_WAITING) {
|
|
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_CFG_NODE_ID;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
LSSmaster->TXbuff->data[0] = CO_LSS_CFG_NODE_ID;
|
|
LSSmaster->TXbuff->data[1] = nodeId;
|
|
CO_memset(&LSSmaster->TXbuff->data[2], 0, 6);
|
|
CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
|
|
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
/* Wait for confirmation */
|
|
else if (LSSmaster->command == CO_LSSmaster_COMMAND_CFG_NODE_ID) {
|
|
|
|
ret = CO_LSSmaster_configureCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_CFG_NODE_ID);
|
|
}
|
|
|
|
if (ret!=CO_LSSmaster_INVALID_STATE && ret!=CO_LSSmaster_WAIT_SLAVE) {
|
|
/* finished */
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
CO_LSSmaster_return_t CO_LSSmaster_configureStore(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms)
|
|
{
|
|
CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
|
|
|
|
if (LSSmaster == NULL){
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
|
|
/* Initiate config store */
|
|
if (LSSmaster->state==CO_LSSmaster_STATE_CFG_SLECTIVE &&
|
|
LSSmaster->command==CO_LSSmaster_COMMAND_WAITING){
|
|
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_CFG_STORE;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
LSSmaster->TXbuff->data[0] = CO_LSS_CFG_STORE;
|
|
CO_memset(&LSSmaster->TXbuff->data[1], 0, 7);
|
|
CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
|
|
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
/* Wait for confirmation */
|
|
else if (LSSmaster->command == CO_LSSmaster_COMMAND_CFG_STORE) {
|
|
|
|
ret = CO_LSSmaster_configureCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_CFG_STORE);
|
|
}
|
|
|
|
if (ret!=CO_LSSmaster_INVALID_STATE && ret!=CO_LSSmaster_WAIT_SLAVE) {
|
|
/* finished */
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
CO_LSSmaster_return_t CO_LSSmaster_ActivateBit(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t switchDelay_ms)
|
|
{
|
|
CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
|
|
|
|
if (LSSmaster == NULL){
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
|
|
/* for activating bit timing, we need to have all slaves set to config
|
|
* state. This check makes it a bit harder to shoot ourselves in the foot */
|
|
if (LSSmaster->state==CO_LSSmaster_STATE_CFG_GLOBAL &&
|
|
LSSmaster->command==CO_LSSmaster_COMMAND_WAITING){
|
|
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
LSSmaster->TXbuff->data[0] = CO_LSS_CFG_ACTIVATE_BIT_TIMING;
|
|
CO_setUint16(&LSSmaster->TXbuff->data[1], switchDelay_ms);
|
|
CO_memset(&LSSmaster->TXbuff->data[3], 0, 5);
|
|
CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
|
|
|
|
/* This is non-confirmed service! */
|
|
ret = CO_LSSmaster_OK;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Helper function - send request
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_inquireInitiate(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint8_t cs)
|
|
{
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
LSSmaster->TXbuff->data[0] = cs;
|
|
CO_memset(&LSSmaster->TXbuff->data[1], 0, 7);
|
|
CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
|
|
|
|
return CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
|
|
/*
|
|
* Helper function - wait for confirmation
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_inquireCheckWait(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
uint8_t csWait,
|
|
uint32_t *value)
|
|
{
|
|
CO_LSSmaster_return_t ret;
|
|
|
|
if (IS_CANrxNew(LSSmaster->CANrxNew)) {
|
|
uint8_t cs = LSSmaster->CANrxData[0];
|
|
*value = CO_getUint32(&LSSmaster->CANrxData[1]);
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
|
|
if (cs == csWait) {
|
|
ret = CO_LSSmaster_OK;
|
|
}
|
|
else {
|
|
ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
|
|
}
|
|
}
|
|
else {
|
|
ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
CO_LSSmaster_return_t CO_LSSmaster_InquireLssAddress(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
CO_LSS_address_t *lssAddress)
|
|
{
|
|
CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
|
|
CO_LSSmaster_command_t next = CO_LSSmaster_COMMAND_WAITING;
|
|
|
|
if (LSSmaster==NULL || lssAddress==NULL){
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
|
|
/* Check for reply */
|
|
if (LSSmaster->command == CO_LSSmaster_COMMAND_INQUIRE_VENDOR) {
|
|
|
|
ret = CO_LSSmaster_inquireCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_INQUIRE_VENDOR, &lssAddress->identity.vendorID);
|
|
if (ret == CO_LSSmaster_OK) {
|
|
/* Start next request */
|
|
next = CO_LSSmaster_COMMAND_INQUIRE_PRODUCT;
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
}
|
|
else if (LSSmaster->command == CO_LSSmaster_COMMAND_INQUIRE_PRODUCT) {
|
|
|
|
ret = CO_LSSmaster_inquireCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_INQUIRE_PRODUCT, &lssAddress->identity.productCode);
|
|
if (ret == CO_LSSmaster_OK) {
|
|
/* Start next request */
|
|
next = CO_LSSmaster_COMMAND_INQUIRE_REV;
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
}
|
|
else if (LSSmaster->command == CO_LSSmaster_COMMAND_INQUIRE_REV) {
|
|
|
|
ret = CO_LSSmaster_inquireCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_INQUIRE_REV, &lssAddress->identity.revisionNumber);
|
|
if (ret == CO_LSSmaster_OK) {
|
|
/* Start next request */
|
|
next = CO_LSSmaster_COMMAND_INQUIRE_SERIAL;
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
}
|
|
else if (LSSmaster->command == CO_LSSmaster_COMMAND_INQUIRE_SERIAL) {
|
|
|
|
ret = CO_LSSmaster_inquireCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_INQUIRE_SERIAL, &lssAddress->identity.serialNumber);
|
|
}
|
|
/* Check for next request */
|
|
if (LSSmaster->state == CO_LSSmaster_STATE_CFG_SLECTIVE ||
|
|
LSSmaster->state == CO_LSSmaster_STATE_CFG_GLOBAL) {
|
|
if (LSSmaster->command == CO_LSSmaster_COMMAND_WAITING) {
|
|
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_INQUIRE_VENDOR;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
ret = CO_LSSmaster_inquireInitiate(LSSmaster, CO_LSS_INQUIRE_VENDOR);
|
|
}
|
|
else if (next == CO_LSSmaster_COMMAND_INQUIRE_PRODUCT) {
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_INQUIRE_PRODUCT;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
ret = CO_LSSmaster_inquireInitiate(LSSmaster, CO_LSS_INQUIRE_PRODUCT);
|
|
}
|
|
else if (next == CO_LSSmaster_COMMAND_INQUIRE_REV) {
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_INQUIRE_REV;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
ret = CO_LSSmaster_inquireInitiate(LSSmaster, CO_LSS_INQUIRE_REV);
|
|
}
|
|
else if (next == CO_LSSmaster_COMMAND_INQUIRE_SERIAL) {
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_INQUIRE_SERIAL;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
ret = CO_LSSmaster_inquireInitiate(LSSmaster, CO_LSS_INQUIRE_SERIAL);
|
|
}
|
|
}
|
|
|
|
if (ret!=CO_LSSmaster_INVALID_STATE && ret!=CO_LSSmaster_WAIT_SLAVE) {
|
|
/* finished */
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
CO_LSSmaster_return_t CO_LSSmaster_InquireNodeId(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
uint8_t *nodeId)
|
|
{
|
|
CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
|
|
|
|
if (LSSmaster==NULL || nodeId==NULL){
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
|
|
/* send request */
|
|
if ((LSSmaster->state==CO_LSSmaster_STATE_CFG_SLECTIVE ||
|
|
LSSmaster->state==CO_LSSmaster_STATE_CFG_GLOBAL) &&
|
|
LSSmaster->command == CO_LSSmaster_COMMAND_WAITING) {
|
|
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_INQUIRE_NODE_ID;
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
ret = CO_LSSmaster_inquireInitiate(LSSmaster, CO_LSS_INQUIRE_NODE_ID);
|
|
}
|
|
/* Check for reply */
|
|
else if (LSSmaster->command == CO_LSSmaster_COMMAND_INQUIRE_NODE_ID) {
|
|
uint32_t tmp = 0;
|
|
|
|
ret = CO_LSSmaster_inquireCheckWait(LSSmaster, timeDifference_ms,
|
|
CO_LSS_INQUIRE_NODE_ID, &tmp);
|
|
|
|
*nodeId = tmp & 0xff;
|
|
}
|
|
|
|
if (ret != CO_LSSmaster_WAIT_SLAVE) {
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Helper function - send request
|
|
*/
|
|
static void CO_LSSmaster_FsSendMsg(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint32_t idNumber,
|
|
uint8_t bitCheck,
|
|
uint8_t lssSub,
|
|
uint8_t lssNext)
|
|
{
|
|
LSSmaster->timeoutTimer = 0;
|
|
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
LSSmaster->TXbuff->data[0] = CO_LSS_IDENT_FASTSCAN;
|
|
CO_setUint32(&LSSmaster->TXbuff->data[1], idNumber);
|
|
LSSmaster->TXbuff->data[5] = bitCheck;
|
|
LSSmaster->TXbuff->data[6] = lssSub;
|
|
LSSmaster->TXbuff->data[7] = lssNext;
|
|
|
|
CO_CANsend(LSSmaster->CANdevTx, LSSmaster->TXbuff);
|
|
}
|
|
|
|
/*
|
|
* Helper function - wait for confirmation
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_FsCheckWait(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms)
|
|
{
|
|
CO_LSSmaster_return_t ret;
|
|
|
|
ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
|
|
if (ret == CO_LSSmaster_TIMEOUT) {
|
|
ret = CO_LSSmaster_SCAN_NOACK;
|
|
|
|
if (IS_CANrxNew(LSSmaster->CANrxNew)) {
|
|
uint8_t cs = LSSmaster->CANrxData[0];
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
|
|
if (cs == CO_LSS_IDENT_SLAVE) {
|
|
/* At least one node is waiting for fastscan */
|
|
ret = CO_LSSmaster_SCAN_FINISHED;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Helper function - initiate scan for 32 bit part of LSS address
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_FsScanInitiate(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
CO_LSSmaster_scantype_t scan,
|
|
CO_LSS_fastscan_lss_sub_next lssSub)
|
|
{
|
|
LSSmaster->fsLssSub = lssSub;
|
|
LSSmaster->fsIdNumber = 0;
|
|
|
|
switch (scan) {
|
|
case CO_LSSmaster_FS_SCAN:
|
|
break;
|
|
case CO_LSSmaster_FS_MATCH:
|
|
/* No scanning requested */
|
|
return CO_LSSmaster_SCAN_FINISHED;
|
|
case CO_LSSmaster_FS_SKIP:
|
|
default:
|
|
return CO_LSSmaster_SCAN_FAILED;
|
|
}
|
|
|
|
LSSmaster->fsBitChecked = CO_LSS_FASTSCAN_BIT31;
|
|
|
|
/* trigger scan procedure by sending first message */
|
|
CO_LSSmaster_FsSendMsg(LSSmaster, LSSmaster->fsIdNumber,
|
|
LSSmaster->fsBitChecked, LSSmaster->fsLssSub, LSSmaster->fsLssSub);
|
|
|
|
return CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
|
|
/*
|
|
* Helper function - scan for 32 bits of LSS address, one by one
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_FsScanWait(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
CO_LSSmaster_scantype_t scan)
|
|
{
|
|
CO_LSSmaster_return_t ret;
|
|
|
|
switch (scan) {
|
|
case CO_LSSmaster_FS_SCAN:
|
|
break;
|
|
case CO_LSSmaster_FS_MATCH:
|
|
/* No scanning requested */
|
|
return CO_LSSmaster_SCAN_FINISHED;
|
|
case CO_LSSmaster_FS_SKIP:
|
|
default:
|
|
return CO_LSSmaster_SCAN_FAILED;
|
|
}
|
|
|
|
ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
|
|
if (ret == CO_LSSmaster_TIMEOUT) {
|
|
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
|
|
if (IS_CANrxNew(LSSmaster->CANrxNew)) {
|
|
uint8_t cs = LSSmaster->CANrxData[0];
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
|
|
if (cs != CO_LSS_IDENT_SLAVE) {
|
|
/* wrong response received. Can not continue */
|
|
return CO_LSSmaster_SCAN_FAILED;
|
|
}
|
|
}
|
|
else {
|
|
/* no response received, assumption is wrong */
|
|
LSSmaster->fsIdNumber |= 1UL << LSSmaster->fsBitChecked;
|
|
}
|
|
|
|
if (LSSmaster->fsBitChecked == CO_LSS_FASTSCAN_BIT0) {
|
|
/* Scanning cycle is finished, we now have 32 bit address data */
|
|
ret = CO_LSSmaster_SCAN_FINISHED;
|
|
}
|
|
else {
|
|
LSSmaster->fsBitChecked --;
|
|
|
|
CO_LSSmaster_FsSendMsg(LSSmaster,
|
|
LSSmaster->fsIdNumber, LSSmaster->fsBitChecked,
|
|
LSSmaster->fsLssSub, LSSmaster->fsLssSub);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Helper function - initiate check for 32 bit part of LSS address
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_FsVerifyInitiate(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
CO_LSSmaster_scantype_t scan,
|
|
uint32_t idNumberCheck,
|
|
CO_LSS_fastscan_lss_sub_next lssNext)
|
|
{
|
|
switch (scan) {
|
|
case CO_LSSmaster_FS_SCAN:
|
|
/* ID obtained by scan */
|
|
break;
|
|
case CO_LSSmaster_FS_MATCH:
|
|
/* ID given by user */
|
|
LSSmaster->fsIdNumber = idNumberCheck;
|
|
break;
|
|
case CO_LSSmaster_FS_SKIP:
|
|
default:
|
|
return CO_LSSmaster_SCAN_FAILED;
|
|
}
|
|
|
|
LSSmaster->fsBitChecked = CO_LSS_FASTSCAN_BIT0;
|
|
|
|
/* send request */
|
|
CO_LSSmaster_FsSendMsg(LSSmaster, LSSmaster->fsIdNumber,
|
|
LSSmaster->fsBitChecked, LSSmaster->fsLssSub, lssNext);
|
|
|
|
return CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
|
|
/*
|
|
* Helper function - verify 32 bit LSS address, request node(s) to switch
|
|
* their state machine to the next state
|
|
*/
|
|
static CO_LSSmaster_return_t CO_LSSmaster_FsVerifyWait(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
CO_LSSmaster_scantype_t scan,
|
|
uint32_t *idNumberRet)
|
|
{
|
|
CO_LSSmaster_return_t ret;
|
|
|
|
if (scan == CO_LSSmaster_FS_SKIP) {
|
|
return CO_LSSmaster_SCAN_FAILED;
|
|
}
|
|
|
|
ret = CO_LSSmaster_check_timeout(LSSmaster, timeDifference_ms);
|
|
if (ret == CO_LSSmaster_TIMEOUT) {
|
|
|
|
*idNumberRet = 0;
|
|
ret = CO_LSSmaster_SCAN_NOACK;
|
|
|
|
if (IS_CANrxNew(LSSmaster->CANrxNew)) {
|
|
uint8_t cs = LSSmaster->CANrxData[0];
|
|
CLEAR_CANrxNew(LSSmaster->CANrxNew);
|
|
|
|
if (cs == CO_LSS_IDENT_SLAVE) {
|
|
*idNumberRet = LSSmaster->fsIdNumber;
|
|
ret = CO_LSSmaster_SCAN_FINISHED;
|
|
} else {
|
|
ret = CO_LSSmaster_SCAN_FAILED;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Helper function - check which 32 bit to scan for next, if any
|
|
*/
|
|
static CO_LSS_fastscan_lss_sub_next CO_LSSmaster_FsSearchNext(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
const CO_LSSmaster_fastscan_t *fastscan)
|
|
{
|
|
int i;
|
|
|
|
/* we search for the next LSS address part to scan for, beginning with the
|
|
* one after the current one. If there is none remaining, scanning is
|
|
* finished */
|
|
for (i = LSSmaster->fsLssSub + 1; i <= CO_LSS_FASTSCAN_SERIAL; i++) {
|
|
if (fastscan->scan[i] != CO_LSSmaster_FS_SKIP) {
|
|
return (CO_LSS_fastscan_lss_sub_next)i;
|
|
}
|
|
}
|
|
/* node selection is triggered by switching node state machine back
|
|
* to initial state */
|
|
return CO_LSS_FASTSCAN_VENDOR_ID;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
CO_LSSmaster_return_t CO_LSSmaster_IdentifyFastscan(
|
|
CO_LSSmaster_t *LSSmaster,
|
|
uint16_t timeDifference_ms,
|
|
CO_LSSmaster_fastscan_t *fastscan)
|
|
{
|
|
uint8_t i;
|
|
uint8_t count;
|
|
CO_LSSmaster_return_t ret = CO_LSSmaster_INVALID_STATE;
|
|
CO_LSS_fastscan_lss_sub_next next;
|
|
|
|
/* parameter validation */
|
|
if (LSSmaster==NULL || fastscan==NULL){
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
if (fastscan->scan[0] == CO_LSSmaster_FS_SKIP) {
|
|
/* vendor ID scan cannot be skipped */
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
count = 0;
|
|
for (i = 0; i < (sizeof(fastscan->scan) / sizeof(fastscan->scan[0])); i++) {
|
|
if (fastscan->scan[i] == CO_LSSmaster_FS_SKIP) {
|
|
count ++;
|
|
}
|
|
if (count > 2) {
|
|
/* Node selection needs the Vendor ID and at least one other value */
|
|
return CO_LSSmaster_ILLEGAL_ARGUMENT;
|
|
}
|
|
}
|
|
|
|
/* state machine validation */
|
|
if (LSSmaster->state!=CO_LSSmaster_STATE_WAITING ||
|
|
(LSSmaster->command!=CO_LSSmaster_COMMAND_WAITING &&
|
|
LSSmaster->command!=CO_LSSmaster_COMMAND_IDENTIFY_FASTSCAN)) {
|
|
/* state machine not ready, other command is already processed */
|
|
return CO_LSSmaster_INVALID_STATE;
|
|
}
|
|
|
|
/* evaluate LSS state machine */
|
|
switch (LSSmaster->command) {
|
|
case CO_LSSmaster_COMMAND_WAITING:
|
|
/* start fastscan */
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_IDENTIFY_FASTSCAN;
|
|
|
|
/* check if any nodes are waiting, if yes fastscan is reset */
|
|
LSSmaster->fsState = CO_LSSmaster_FS_STATE_CHECK;
|
|
CO_LSSmaster_FsSendMsg(LSSmaster, 0, CO_LSS_FASTSCAN_CONFIRM, 0, 0);
|
|
|
|
return CO_LSSmaster_WAIT_SLAVE;
|
|
default:
|
|
/* continue with evaluating fastscan state machine */
|
|
break;
|
|
}
|
|
|
|
/* evaluate fastscan state machine. The state machine is evaluated as following
|
|
* - check for non-configured nodes
|
|
* - scan for vendor ID
|
|
* - verify vendor ID, switch node state
|
|
* - scan for product code
|
|
* - verify product code, switch node state
|
|
* - scan for revision number
|
|
* - verify revision number, switch node state
|
|
* - scan for serial number
|
|
* - verify serial number, switch node to LSS configuration mode
|
|
* Certain steps can be skipped as mentioned in the function description.
|
|
* If one step is not ack'ed by a node, the scanning process is terminated
|
|
* and the correspondign error is returned. */
|
|
switch (LSSmaster->fsState) {
|
|
case CO_LSSmaster_FS_STATE_CHECK:
|
|
ret = CO_LSSmaster_FsCheckWait(LSSmaster, timeDifference_ms);
|
|
if (ret == CO_LSSmaster_SCAN_FINISHED) {
|
|
CO_memset((uint8_t*)&fastscan->found, 0, sizeof(fastscan->found));
|
|
|
|
/* start scanning procedure by triggering vendor ID scan */
|
|
CO_LSSmaster_FsScanInitiate(LSSmaster, timeDifference_ms,
|
|
fastscan->scan[CO_LSS_FASTSCAN_VENDOR_ID],
|
|
CO_LSS_FASTSCAN_VENDOR_ID);
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
|
|
LSSmaster->fsState = CO_LSSmaster_FS_STATE_SCAN;
|
|
}
|
|
break;
|
|
case CO_LSSmaster_FS_STATE_SCAN:
|
|
ret = CO_LSSmaster_FsScanWait(LSSmaster, timeDifference_ms,
|
|
fastscan->scan[LSSmaster->fsLssSub]);
|
|
if (ret == CO_LSSmaster_SCAN_FINISHED) {
|
|
/* scanning finished, initiate verifcation. The verification
|
|
* message also contains the node state machine "switch to
|
|
* next state" request */
|
|
next = CO_LSSmaster_FsSearchNext(LSSmaster, fastscan);
|
|
ret = CO_LSSmaster_FsVerifyInitiate(LSSmaster, timeDifference_ms,
|
|
fastscan->scan[LSSmaster->fsLssSub],
|
|
fastscan->match.addr[LSSmaster->fsLssSub], next);
|
|
|
|
LSSmaster->fsState = CO_LSSmaster_FS_STATE_VERIFY;
|
|
}
|
|
break;
|
|
case CO_LSSmaster_FS_STATE_VERIFY:
|
|
ret = CO_LSSmaster_FsVerifyWait(LSSmaster, timeDifference_ms,
|
|
fastscan->scan[LSSmaster->fsLssSub],
|
|
&fastscan->found.addr[LSSmaster->fsLssSub]);
|
|
if (ret == CO_LSSmaster_SCAN_FINISHED) {
|
|
/* verification successful:
|
|
* - assumed node id is correct
|
|
* - node state machine has switched to the requested state,
|
|
* mirror that in the local copy */
|
|
next = CO_LSSmaster_FsSearchNext(LSSmaster, fastscan);
|
|
if (next == CO_LSS_FASTSCAN_VENDOR_ID) {
|
|
/* fastscan finished, one node is now in LSS configuration
|
|
* mode */
|
|
LSSmaster->state = CO_LSSmaster_STATE_CFG_SLECTIVE;
|
|
}
|
|
else {
|
|
/* initiate scan for next part of LSS address */
|
|
ret = CO_LSSmaster_FsScanInitiate(LSSmaster,
|
|
timeDifference_ms, fastscan->scan[next], next);
|
|
if (ret == CO_LSSmaster_SCAN_FINISHED) {
|
|
/* Scanning is not requested. Initiate verification
|
|
* step in next function call */
|
|
ret = CO_LSSmaster_WAIT_SLAVE;
|
|
}
|
|
|
|
LSSmaster->fsState = CO_LSSmaster_FS_STATE_SCAN;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ret != CO_LSSmaster_WAIT_SLAVE) {
|
|
/* finished */
|
|
LSSmaster->command = CO_LSSmaster_COMMAND_WAITING;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
#endif
|