author | Florian Pose <fp@igh-essen.com> |
Mon, 26 Jan 2009 14:13:50 +0000 | |
changeset 1339 | 3483999e1aba |
parent 1326 | ef907b0b5125 |
child 1363 | 11c0b2caa253 |
permissions | -rw-r--r-- |
433 | 1 |
/****************************************************************************** |
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* |
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* $Id$ |
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* |
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* Copyright (C) 2006-2008 Florian Pose, Ingenieurgemeinschaft IgH |
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* |
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* This file is part of the IgH EtherCAT Master. |
|
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* |
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* The IgH EtherCAT Master is free software; you can redistribute it and/or |
ef907b0b5125
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* modify it under the terms of the GNU General Public License version 2, as |
ef907b0b5125
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* published by the Free Software Foundation. |
ef907b0b5125
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* |
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* The IgH EtherCAT Master is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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* Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with the IgH EtherCAT Master; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* Using the EtherCAT technology and brand is permitted in compliance with |
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* the industrial property and similar rights of Beckhoff Automation GmbH. |
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* |
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*****************************************************************************/ |
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/** |
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\file |
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EtherCAT slave information interface FSM. |
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*/ |
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/*****************************************************************************/ |
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#include "globals.h" |
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#include "mailbox.h" |
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#include "master.h" |
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#include "fsm_sii.h" |
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/** Read/write timeout [ms]. |
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* |
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* Used to calculate timeouts bsed on the jiffies counter. |
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* |
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* \attention Must be more than 10 to avoid problems on kernels that run with |
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* a timer interupt frequency of 100 Hz. |
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*/ |
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#define SII_TIMEOUT 20 |
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|
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/** Time before evaluating answer at writing [ms]. |
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*/ |
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#define SII_INHIBIT 5 |
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//#define SII_DEBUG |
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/*****************************************************************************/ |
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void ec_fsm_sii_state_start_reading(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_read_check(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_read_fetch(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_start_writing(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_write_check(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_write_check2(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_end(ec_fsm_sii_t *); |
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void ec_fsm_sii_state_error(ec_fsm_sii_t *); |
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/*****************************************************************************/ |
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/** |
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Constructor. |
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*/ |
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void ec_fsm_sii_init(ec_fsm_sii_t *fsm, /**< finite state machine */ |
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ec_datagram_t *datagram /**< datagram structure to use */ |
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) |
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{ |
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fsm->state = NULL; |
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fsm->datagram = datagram; |
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} |
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/*****************************************************************************/ |
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/** |
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Destructor. |
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*/ |
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void ec_fsm_sii_clear(ec_fsm_sii_t *fsm /**< finite state machine */) |
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{ |
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} |
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/*****************************************************************************/ |
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/** |
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Initializes the SII read state machine. |
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*/ |
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void ec_fsm_sii_read(ec_fsm_sii_t *fsm, /**< finite state machine */ |
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ec_slave_t *slave, /**< slave to read from */ |
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uint16_t word_offset, /**< offset to read from */ |
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ec_fsm_sii_addressing_t mode /**< addressing scheme */ |
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) |
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{ |
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fsm->state = ec_fsm_sii_state_start_reading; |
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fsm->slave = slave; |
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fsm->word_offset = word_offset; |
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fsm->mode = mode; |
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} |
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/*****************************************************************************/ |
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/** |
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Initializes the SII write state machine. |
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*/ |
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void ec_fsm_sii_write(ec_fsm_sii_t *fsm, /**< finite state machine */ |
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ec_slave_t *slave, /**< slave to read from */ |
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uint16_t word_offset, /**< offset to read from */ |
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const uint16_t *value, /**< pointer to 2 bytes of data */ |
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ec_fsm_sii_addressing_t mode /**< addressing scheme */ |
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) |
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{ |
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fsm->state = ec_fsm_sii_state_start_writing; |
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fsm->slave = slave; |
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fsm->word_offset = word_offset; |
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fsm->mode = mode; |
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memcpy(fsm->value, value, 2); |
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} |
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/*****************************************************************************/ |
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/** |
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Executes the SII state machine. |
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\return false, if the state machine has terminated |
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*/ |
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int ec_fsm_sii_exec(ec_fsm_sii_t *fsm /**< finite state machine */) |
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{ |
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fsm->state(fsm); |
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return fsm->state != ec_fsm_sii_state_end |
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&& fsm->state != ec_fsm_sii_state_error; |
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} |
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/*****************************************************************************/ |
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/** |
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Returns, if the master startup state machine terminated with success. |
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\return non-zero if successful. |
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*/ |
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int ec_fsm_sii_success(ec_fsm_sii_t *fsm /**< Finite state machine */) |
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{ |
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return fsm->state == ec_fsm_sii_state_end; |
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} |
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/****************************************************************************** |
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* state functions |
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*****************************************************************************/ |
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/** |
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SII state: START READING. |
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Starts reading the slave information interface. |
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*/ |
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void ec_fsm_sii_state_start_reading( |
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ec_fsm_sii_t *fsm /**< finite state machine */ |
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) |
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{ |
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ec_datagram_t *datagram = fsm->datagram; |
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// initiate read operation |
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switch (fsm->mode) { |
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case EC_FSM_SII_USE_INCREMENT_ADDRESS: |
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ec_datagram_apwr(datagram, fsm->slave->ring_position, 0x502, 4); |
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break; |
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case EC_FSM_SII_USE_CONFIGURED_ADDRESS: |
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ec_datagram_fpwr(datagram, fsm->slave->station_address, 0x502, 4); |
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break; |
177 |
} |
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EC_WRITE_U8 (datagram->data, 0x80); // two address octets |
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EC_WRITE_U8 (datagram->data + 1, 0x01); // request read operation |
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EC_WRITE_U16(datagram->data + 2, fsm->word_offset); |
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#ifdef SII_DEBUG |
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EC_DBG("reading SII data:\n"); |
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ec_print_data(datagram->data, 4); |
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#endif |
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fsm->retries = EC_FSM_RETRIES; |
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fsm->state = ec_fsm_sii_state_read_check; |
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} |
191 |
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/*****************************************************************************/ |
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193 |
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194 |
/** |
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195 |
SII state: READ CHECK. |
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196 |
Checks, if the SII-read-datagram has been sent and issues a fetch datagram. |
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*/ |
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void ec_fsm_sii_state_read_check( |
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ec_fsm_sii_t *fsm /**< finite state machine */ |
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201 |
) |
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{ |
203 |
ec_datagram_t *datagram = fsm->datagram; |
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if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--) |
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return; |
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|
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if (datagram->state != EC_DATAGRAM_RECEIVED) { |
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fsm->state = ec_fsm_sii_state_error; |
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EC_ERR("Failed to receive SII read datagram from slave %u" |
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Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
211 |
" (datagram state %u).\n", |
594
07dd2a7df66e
Added datagram state to "Failed to receive..." messages.
Florian Pose <fp@igh-essen.com>
parents:
505
diff
changeset
|
212 |
fsm->slave->ring_position, datagram->state); |
505
bc443ca0077f
State machines re-send datagrams on timeout.
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parents:
435
diff
changeset
|
213 |
return; |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
214 |
} |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
215 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
216 |
if (datagram->working_counter != 1) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
217 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
218 |
EC_ERR("Reception of SII read datagram failed on slave %u: ", |
713
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
219 |
fsm->slave->ring_position); |
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
220 |
ec_datagram_print_wc_error(datagram); |
433 | 221 |
return; |
222 |
} |
|
223 |
||
1039
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
224 |
fsm->jiffies_start = datagram->jiffies_sent; |
433 | 225 |
fsm->check_once_more = 1; |
226 |
||
227 |
// issue check/fetch datagram |
|
228 |
switch (fsm->mode) { |
|
815
002fe9ec778f
Implemented missing datagram types.
Florian Pose <fp@igh-essen.com>
parents:
758
diff
changeset
|
229 |
case EC_FSM_SII_USE_INCREMENT_ADDRESS: |
433 | 230 |
ec_datagram_aprd(datagram, fsm->slave->ring_position, 0x502, 10); |
231 |
break; |
|
815
002fe9ec778f
Implemented missing datagram types.
Florian Pose <fp@igh-essen.com>
parents:
758
diff
changeset
|
232 |
case EC_FSM_SII_USE_CONFIGURED_ADDRESS: |
002fe9ec778f
Implemented missing datagram types.
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parents:
758
diff
changeset
|
233 |
ec_datagram_fprd(datagram, fsm->slave->station_address, 0x502, 10); |
433 | 234 |
break; |
235 |
} |
|
637
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
236 |
|
1225
4d5b739edcb5
Introduced ec_datagram_zero().
Florian Pose <fp@igh-essen.com>
parents:
1123
diff
changeset
|
237 |
ec_datagram_zero(datagram); |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
238 |
fsm->retries = EC_FSM_RETRIES; |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
239 |
fsm->state = ec_fsm_sii_state_read_fetch; |
433 | 240 |
} |
241 |
||
242 |
/*****************************************************************************/ |
|
243 |
||
244 |
/** |
|
245 |
SII state: READ FETCH. |
|
246 |
Fetches the result of an SII-read datagram. |
|
247 |
*/ |
|
248 |
||
754
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
249 |
void ec_fsm_sii_state_read_fetch( |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
250 |
ec_fsm_sii_t *fsm /**< finite state machine */ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
251 |
) |
433 | 252 |
{ |
253 |
ec_datagram_t *datagram = fsm->datagram; |
|
254 |
||
637
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
255 |
if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--) |
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
256 |
return; |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
257 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
258 |
if (datagram->state != EC_DATAGRAM_RECEIVED) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
259 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
260 |
EC_ERR("Failed to receive SII check/fetch datagram from slave %u" |
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
261 |
" (datagram state %u).\n", |
594
07dd2a7df66e
Added datagram state to "Failed to receive..." messages.
Florian Pose <fp@igh-essen.com>
parents:
505
diff
changeset
|
262 |
fsm->slave->ring_position, datagram->state); |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
263 |
return; |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
264 |
} |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
265 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
266 |
if (datagram->working_counter != 1) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
267 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
268 |
EC_ERR("Reception of SII check/fetch datagram failed on slave %u: ", |
713
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
269 |
fsm->slave->ring_position); |
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
270 |
ec_datagram_print_wc_error(datagram); |
433 | 271 |
return; |
272 |
} |
|
273 |
||
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
274 |
#ifdef SII_DEBUG |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
275 |
EC_DBG("checking SII read state:\n"); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
276 |
ec_print_data(datagram->data, 10); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
277 |
#endif |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
278 |
|
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
279 |
if (EC_READ_U8(datagram->data + 1) & 0x20) { |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
280 |
EC_ERR("SII: Error on last SII command!\n"); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
281 |
fsm->state = ec_fsm_sii_state_error; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
282 |
return; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
283 |
} |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
284 |
|
433 | 285 |
// check "busy bit" |
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
286 |
if (EC_READ_U8(datagram->data + 1) & 0x81) { // busy bit or |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
287 |
// read operation busy |
433 | 288 |
// still busy... timeout? |
1039
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
289 |
unsigned long diff_ms = |
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
290 |
(datagram->jiffies_received - fsm->jiffies_start) * 1000 / HZ; |
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
291 |
if (diff_ms >= SII_TIMEOUT) { |
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
292 |
if (fsm->check_once_more) { |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
293 |
fsm->check_once_more = 0; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
294 |
} else { |
433 | 295 |
EC_ERR("SII: Read timeout.\n"); |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
296 |
fsm->state = ec_fsm_sii_state_error; |
433 | 297 |
return; |
298 |
} |
|
299 |
} |
|
300 |
||
301 |
// issue check/fetch datagram again |
|
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
302 |
fsm->retries = EC_FSM_RETRIES; |
433 | 303 |
return; |
304 |
} |
|
305 |
||
306 |
// SII value received. |
|
307 |
memcpy(fsm->value, datagram->data + 6, 4); |
|
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
308 |
fsm->state = ec_fsm_sii_state_end; |
433 | 309 |
} |
310 |
||
311 |
/*****************************************************************************/ |
|
312 |
||
313 |
/** |
|
314 |
SII state: START WRITING. |
|
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
315 |
Starts writing a word through the slave information interface. |
433 | 316 |
*/ |
317 |
||
754
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
318 |
void ec_fsm_sii_state_start_writing( |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
319 |
ec_fsm_sii_t *fsm /**< finite state machine */ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
320 |
) |
433 | 321 |
{ |
322 |
ec_datagram_t *datagram = fsm->datagram; |
|
323 |
||
324 |
// initiate write operation |
|
815
002fe9ec778f
Implemented missing datagram types.
Florian Pose <fp@igh-essen.com>
parents:
758
diff
changeset
|
325 |
ec_datagram_fpwr(datagram, fsm->slave->station_address, 0x502, 8); |
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
326 |
EC_WRITE_U8 (datagram->data, 0x81); // two address octets |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
327 |
// + enable write access |
433 | 328 |
EC_WRITE_U8 (datagram->data + 1, 0x02); // request write operation |
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
329 |
EC_WRITE_U16(datagram->data + 2, fsm->word_offset); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
330 |
memset(datagram->data + 4, 0x00, 2); |
433 | 331 |
memcpy(datagram->data + 6, fsm->value, 2); |
637
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
332 |
|
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
333 |
#ifdef SII_DEBUG |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
334 |
EC_DBG("writing SII data:\n"); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
335 |
ec_print_data(datagram->data, 8); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
336 |
#endif |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
337 |
|
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
338 |
fsm->retries = EC_FSM_RETRIES; |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
339 |
fsm->state = ec_fsm_sii_state_write_check; |
433 | 340 |
} |
341 |
||
342 |
/*****************************************************************************/ |
|
343 |
||
344 |
/** |
|
345 |
SII state: WRITE CHECK. |
|
346 |
*/ |
|
347 |
||
754
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
348 |
void ec_fsm_sii_state_write_check( |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
349 |
ec_fsm_sii_t *fsm /**< finite state machine */ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
350 |
) |
433 | 351 |
{ |
352 |
ec_datagram_t *datagram = fsm->datagram; |
|
353 |
||
637
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
354 |
if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--) |
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
355 |
return; |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
356 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
357 |
if (datagram->state != EC_DATAGRAM_RECEIVED) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
358 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
359 |
EC_ERR("Failed to receive SII write datagram for slave %u" |
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
360 |
" (datagram state %u).\n", |
594
07dd2a7df66e
Added datagram state to "Failed to receive..." messages.
Florian Pose <fp@igh-essen.com>
parents:
505
diff
changeset
|
361 |
fsm->slave->ring_position, datagram->state); |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
362 |
return; |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
363 |
} |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
364 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
365 |
if (datagram->working_counter != 1) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
366 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
367 |
EC_ERR("Reception of SII write datagram failed on slave %u: ", |
713
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
368 |
fsm->slave->ring_position); |
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
369 |
ec_datagram_print_wc_error(datagram); |
433 | 370 |
return; |
371 |
} |
|
372 |
||
1039
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
373 |
fsm->jiffies_start = datagram->jiffies_sent; |
433 | 374 |
fsm->check_once_more = 1; |
375 |
||
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
376 |
// issue check datagram |
815
002fe9ec778f
Implemented missing datagram types.
Florian Pose <fp@igh-essen.com>
parents:
758
diff
changeset
|
377 |
ec_datagram_fprd(datagram, fsm->slave->station_address, 0x502, 2); |
1225
4d5b739edcb5
Introduced ec_datagram_zero().
Florian Pose <fp@igh-essen.com>
parents:
1123
diff
changeset
|
378 |
ec_datagram_zero(datagram); |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
379 |
fsm->retries = EC_FSM_RETRIES; |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
380 |
fsm->state = ec_fsm_sii_state_write_check2; |
433 | 381 |
} |
382 |
||
383 |
/*****************************************************************************/ |
|
384 |
||
385 |
/** |
|
386 |
SII state: WRITE CHECK 2. |
|
387 |
*/ |
|
388 |
||
754
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
389 |
void ec_fsm_sii_state_write_check2( |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
390 |
ec_fsm_sii_t *fsm /**< finite state machine */ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
391 |
) |
433 | 392 |
{ |
393 |
ec_datagram_t *datagram = fsm->datagram; |
|
1039
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
394 |
unsigned long diff_ms; |
433 | 395 |
|
637
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
396 |
if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--) |
d5d04c868e0e
Removed ecrt_master_run(), removed datagram queueing from state
Florian Pose <fp@igh-essen.com>
parents:
600
diff
changeset
|
397 |
return; |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
398 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
399 |
if (datagram->state != EC_DATAGRAM_RECEIVED) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
400 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
401 |
EC_ERR("Failed to receive SII write check datagram from slave %u" |
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
402 |
" (datagram state %u).\n", |
594
07dd2a7df66e
Added datagram state to "Failed to receive..." messages.
Florian Pose <fp@igh-essen.com>
parents:
505
diff
changeset
|
403 |
fsm->slave->ring_position, datagram->state); |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
404 |
return; |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
405 |
} |
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
406 |
|
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
407 |
if (datagram->working_counter != 1) { |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
408 |
fsm->state = ec_fsm_sii_state_error; |
986
a486591ba86b
Replaced misleading %i by %u.
Florian Pose <fp@igh-essen.com>
parents:
979
diff
changeset
|
409 |
EC_ERR("Reception of SII write check datagram failed on slave %u: ", |
713
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
410 |
fsm->slave->ring_position); |
ae41cadd25b6
Better handling of unexpected working counters; introduced
Florian Pose <fp@igh-essen.com>
parents:
637
diff
changeset
|
411 |
ec_datagram_print_wc_error(datagram); |
433 | 412 |
return; |
413 |
} |
|
414 |
||
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
415 |
#ifdef SII_DEBUG |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
416 |
EC_DBG("checking SII write state:\n"); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
417 |
ec_print_data(datagram->data, 2); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
418 |
#endif |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
419 |
|
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
420 |
if (EC_READ_U8(datagram->data + 1) & 0x20) { |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
421 |
EC_ERR("SII: Error on last SII command!\n"); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
422 |
fsm->state = ec_fsm_sii_state_error; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
423 |
return; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
424 |
} |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
425 |
|
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
426 |
/* FIXME: some slaves never answer with the busy flag set... |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
427 |
* wait a few ms for the write operation to complete. */ |
1039
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
428 |
diff_ms = (datagram->jiffies_received - fsm->jiffies_start) * 1000 / HZ; |
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
429 |
if (diff_ms < SII_INHIBIT) { |
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
430 |
#ifdef SII_DEBUG |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
431 |
EC_DBG("too early.\n"); |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
432 |
#endif |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
433 |
// issue check datagram again |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
434 |
fsm->retries = EC_FSM_RETRIES; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
435 |
return; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
436 |
} |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
437 |
|
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
438 |
if (EC_READ_U8(datagram->data + 1) & 0x82) { // busy bit or |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
439 |
// write operation busy bit |
433 | 440 |
// still busy... timeout? |
1039
2881a83d084f
Use jiffies instead of cycles in SII state machine.
Florian Pose <fp@igh-essen.com>
parents:
986
diff
changeset
|
441 |
if (diff_ms >= SII_TIMEOUT) { |
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
442 |
if (fsm->check_once_more) { |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
443 |
fsm->check_once_more = 0; |
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
444 |
} else { |
433 | 445 |
EC_ERR("SII: Write timeout.\n"); |
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
446 |
fsm->state = ec_fsm_sii_state_error; |
433 | 447 |
return; |
448 |
} |
|
449 |
} |
|
450 |
||
755
178353fc47e5
SII writing workaround for some slaves, that don't respond correctly;
Florian Pose <fp@igh-essen.com>
parents:
754
diff
changeset
|
451 |
// issue check datagram again |
505
bc443ca0077f
State machines re-send datagrams on timeout.
Florian Pose <fp@igh-essen.com>
parents:
435
diff
changeset
|
452 |
fsm->retries = EC_FSM_RETRIES; |
433 | 453 |
return; |
454 |
} |
|
455 |
||
456 |
if (EC_READ_U8(datagram->data + 1) & 0x40) { |
|
457 |
EC_ERR("SII: Write operation failed!\n"); |
|
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
458 |
fsm->state = ec_fsm_sii_state_error; |
433 | 459 |
return; |
460 |
} |
|
461 |
||
462 |
// success |
|
753
7ba5f9cd8f7e
Renamed sii state functions.
Florian Pose <fp@igh-essen.com>
parents:
713
diff
changeset
|
463 |
fsm->state = ec_fsm_sii_state_end; |
433 | 464 |
} |
465 |
||
466 |
/*****************************************************************************/ |
|
467 |
||
468 |
/** |
|
469 |
State: ERROR. |
|
470 |
*/ |
|
471 |
||
754
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
472 |
void ec_fsm_sii_state_error( |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
473 |
ec_fsm_sii_t *fsm /**< finite state machine */ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
474 |
) |
433 | 475 |
{ |
476 |
} |
|
477 |
||
478 |
/*****************************************************************************/ |
|
479 |
||
480 |
/** |
|
481 |
State: END. |
|
482 |
*/ |
|
483 |
||
754
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
484 |
void ec_fsm_sii_state_end( |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
485 |
ec_fsm_sii_t *fsm /**< finite state machine */ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
486 |
) |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
487 |
{ |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
488 |
} |
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
489 |
|
0b47b49c5976
Changed unit of ec_eeprom_write_request_t from word to byte.
Florian Pose <fp@igh-essen.com>
parents:
753
diff
changeset
|
490 |
/*****************************************************************************/ |