flm01/mote/v2/avr/ctrl.c

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//
// ctrl.c : AVR uC code for ctrl buffer initialisation and put/get ops
//
// Copyright (c) 2010 flukso.net
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
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#include <avr/eeprom.h>
#include <util/crc16.h>
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#include "global.h"
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#include "main.h"
#include "buffer.h"
#include "ctrl.h"
#include "encode.h"
cBuffer ctrlRxBuffer; // ctrl receive buffer
cBuffer ctrlTxBuffer; // ctrl transmit buffer
static char ctrlRxData[CTRL_RX_BUFFER_SIZE];
static char ctrlTxData[CTRL_TX_BUFFER_SIZE];
extern struct version_struct EEMEM EEPROM_version;
extern struct version_struct version;
extern struct event_struct EEMEM EEPROM_event;
extern struct event_struct event;
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extern uint8_t EEMEM EEPROM_enabled;
extern uint8_t enabled;
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extern uint8_t EEMEM EEPROM_phy_to_log[MAX_SENSORS];
extern uint8_t phy_to_log[MAX_SENSORS];
extern struct sensor_struct EEMEM EEPROM_sensor[MAX_SENSORS];
extern struct sensor_struct sensor[MAX_SENSORS];
extern struct state_struct state[MAX_SENSORS];
void ctrlInit(void)
{
// initialize the CTRL receive buffer
bufferInit(&ctrlRxBuffer, (u08*) ctrlRxData, CTRL_RX_BUFFER_SIZE);
// initialize the CTRL transmit buffer
bufferInit(&ctrlTxBuffer, (u08*) ctrlTxData, CTRL_TX_BUFFER_SIZE);
}
uint8_t ctrlTxBufferIsEmpty(void)
{
if(ctrlTxBuffer.datalength == 0) {
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlAddToTxBuffer(uint8_t data)
{
return bufferAddToEnd(&ctrlTxBuffer, data);
}
uint8_t ctrlGetFromTxBuffer(uint8_t* data) {
// make sure we have data in the Tx buffer
if(ctrlTxBuffer.datalength) {
// get byte from beginning of buffer
*data = bufferGetFromFront(&ctrlTxBuffer);
return TRUE;
}
else {
// no data
return FALSE;
}
}
uint8_t ctrlRxBufferIsEmpty(void)
{
if(ctrlRxBuffer.datalength == 0) {
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlAddToRxBuffer(uint8_t data)
{
return bufferAddToEnd(&ctrlRxBuffer, data);
}
uint8_t ctrlGetFromRxBuffer(uint8_t* pdata)
{
// make sure we have data in the Rx buffer
if(ctrlRxBuffer.datalength) {
// get byte from beginning of buffer
*pdata = bufferGetFromFront(&ctrlRxBuffer);
return TRUE;
}
else {
// no data
return FALSE;
}
}
void ctrlFlushRxBuffer(void)
{
ctrlRxBuffer.datalength = 0;
}
void ctrlFlushTxBuffer(void)
{
ctrlTxBuffer.datalength = 0;
}
uint8_t ctrlReadCharFromRxBuffer(uint8_t* pdata)
{
uint8_t high_hex, low_hex;
if (ctrlGetFromRxBuffer(&high_hex) && ctrlGetFromRxBuffer(&low_hex)) {
htob(high_hex, low_hex, pdata);
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlReadShortFromRxBuffer(uint16_t* pdata)
{
uint8_t high_char, low_char;
if(ctrlReadCharFromRxBuffer(&high_char) && ctrlReadCharFromRxBuffer(&low_char)) {
*pdata = ((uint16_t)high_char << 8) + low_char;
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlReadLongFromRxBuffer(uint32_t* pdata)
{
uint16_t high_short, low_short;
if(ctrlReadShortFromRxBuffer(&high_short) && ctrlReadShortFromRxBuffer(&low_short)) {
*pdata = ((uint32_t)high_short << 16) + low_short;
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlWriteCharToTxBuffer(uint8_t data)
{
uint8_t high_hex, low_hex;
btoh(data, &high_hex, &low_hex);
if (ctrlAddToTxBuffer(high_hex) && ctrlAddToTxBuffer(low_hex)) {
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlWriteShortToTxBuffer(uint16_t data)
{
if (ctrlWriteCharToTxBuffer((uint8_t)(data >> 8)) && ctrlWriteCharToTxBuffer((uint8_t)data)) {
return TRUE;
}
else {
return FALSE;
}
}
uint8_t ctrlWriteLongToTxBuffer(uint32_t data)
{
if (ctrlWriteShortToTxBuffer((uint16_t)(data >> 16)) && ctrlWriteShortToTxBuffer((uint16_t)data)) {
return TRUE;
}
else {
return FALSE;
}
}
void ctrlRxToTxLoop(void)
{
uint8_t data;
while (ctrlGetFromRxBuffer(&data)) {
ctrlAddToTxBuffer(data);
}
}
uint8_t ctrlCalcCrc8(cBuffer* buffer, uint8_t chop)
{
uint8_t i, crc = 0;
for (i = 0; i < buffer->datalength - chop; i++) {
crc = _crc_ibutton_update(crc, bufferGetAtIndex(buffer, i));
}
return crc;
}
uint8_t ctrlExtractCrc8fromMessage(cBuffer* buffer)
{
uint8_t crc, high_hex, low_hex;
high_hex = bufferGetAtIndex(buffer, buffer->datalength - 2);
low_hex = bufferGetAtIndex(buffer, buffer->datalength - 1);
htob(high_hex, low_hex, &crc);
return crc;
}
void ctrlDecode(void)
{
uint8_t cmd[2], crc;
ctrlFlushTxBuffer();
crc = ctrlExtractCrc8fromMessage(&ctrlRxBuffer);
if (ctrlCalcCrc8(&ctrlRxBuffer, 2) != crc) {
ctrlAddToTxBuffer('z');
ctrlAddToTxBuffer('z');
}
else if (ctrlGetFromRxBuffer(cmd) && ctrlGetFromRxBuffer(cmd+1)) {
ctrlAddToTxBuffer(cmd[0]);
ctrlAddToTxBuffer(cmd[1]);
switch (cmd[0]) {
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case 'g': /* get */
ctrlCmdGet(cmd[1]);
break;
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case 's': /* set */
ctrlCmdSet(cmd[1]);
break;
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case 'c': /* commit */
if (cmd[1] == 't') ctrlCmdCommit();
break;
}
}
else {
ctrlAddToTxBuffer('z');
ctrlAddToTxBuffer('y');
}
crc = ctrlCalcCrc8(&ctrlTxBuffer, 0);
ctrlWriteCharToTxBuffer(crc);
ctrlAddToTxBuffer('.');
ctrlFlushRxBuffer();
}
void ctrlCmdGet(uint8_t cmd)
{
uint8_t i = 0;
uint32_t tmp32, tmp32_bis;
switch (cmd) {
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case 'h': /* hardware {major,minor} version */
ctrlWriteShortToTxBuffer(version.hw_major);
ctrlWriteCharToTxBuffer(version.hw_minor);
break;
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case 's': /* software {major,minor} version */
ctrlWriteCharToTxBuffer(version.sw_major);
ctrlWriteCharToTxBuffer(version.sw_minor);
break;
case 'e': /* port enabled | disabled */
ctrlReadCharFromRxBuffer(&i);
ctrlWriteCharToTxBuffer(i);
ctrlWriteCharToTxBuffer((enabled >> i) & 0x01);
break;
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case 'p': /* phy-to-logical mapping */
for (i = 0 ; i < MAX_SENSORS; i++) {
ctrlWriteCharToTxBuffer(phy_to_log[i]);
}
break;
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case 'c': /* sensor counter value */
ctrlReadCharFromRxBuffer(&i);
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if (i < MAX_SENSORS) {
cli();
tmp32 = sensor[i].counter;
sei();
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ctrlWriteCharToTxBuffer(i);
ctrlWriteLongToTxBuffer(tmp32);
}
break;
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case 'm': /* sensor meterconstant */
ctrlReadCharFromRxBuffer(&i);
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if (i < MAX_SENSORS) {
ctrlWriteCharToTxBuffer(i);
ctrlWriteShortToTxBuffer(sensor[i].meterconst);
}
break;
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case 'w': /* watchdog counter */
ctrlWriteShortToTxBuffer(event.wdt);
break;
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case 'b': /* brown-out counter */
ctrlWriteShortToTxBuffer(event.brown_out);
break;
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case 'd': /* delta: all changes since last gd */
for (i = 0 ; i < MAX_SENSORS; i++) {
if (state[i].flags & (STATE_PULSE | STATE_POWER)) {
ctrlWriteCharToTxBuffer(i);
cli();
tmp32 = sensor[i].counter;
tmp32_bis = (i < 3) ? state[i].power : state[i].timestamp;
sei();
ctrlWriteLongToTxBuffer(tmp32);
ctrlWriteLongToTxBuffer(tmp32_bis);
state[i].flags &= ~(STATE_PULSE | STATE_POWER);
}
}
break;
}
}
void ctrlCmdSet(uint8_t cmd)
{
uint8_t i = 0, tmp8 = 0;
uint16_t tmp16 = 0;
uint32_t tmp32 = 0;
switch (cmd) {
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case 'h': /* hardware {major,minor} version */
ctrlReadShortFromRxBuffer(&version.hw_major);
ctrlReadCharFromRxBuffer(&version.hw_minor);
ctrlWriteShortToTxBuffer(version.hw_major);
ctrlWriteCharToTxBuffer(version.hw_minor);
break;
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case 's': /* software {major,minor} version */
ctrlReadCharFromRxBuffer(&version.sw_major);
ctrlReadCharFromRxBuffer(&version.sw_minor);
ctrlWriteCharToTxBuffer(version.sw_major);
ctrlWriteCharToTxBuffer(version.sw_minor);
break;
case 'e': /* port enabled | disabled */
ctrlReadCharFromRxBuffer(&i);
ctrlReadCharFromRxBuffer(&tmp8);
if (tmp8) {
enabled |= (1 << i);
}
else {
enabled &= ~(1 << i);
}
ctrlWriteCharToTxBuffer(i);
ctrlWriteCharToTxBuffer((enabled >> i) & 0x01);
break;
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case 'p': /* phy-to-logical mapping */
for (i = 0 ; i < MAX_SENSORS; i++) {
ctrlReadCharFromRxBuffer(&tmp8);
cli();
phy_to_log[i] = tmp8;
sei();
ctrlWriteCharToTxBuffer(phy_to_log[i]);
}
break;
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case 'c': /* sensor counter value */
ctrlReadCharFromRxBuffer(&i);
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if (i < MAX_SENSORS) {
ctrlReadLongFromRxBuffer(&tmp32);
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cli();
sensor[i].counter = tmp32;
sei();
ctrlWriteCharToTxBuffer(i);
ctrlWriteLongToTxBuffer(tmp32);
}
break;
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case 'm': /* sensor meterconstant */
ctrlReadCharFromRxBuffer(&i);
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if (i < MAX_SENSORS) {
ctrlReadShortFromRxBuffer(&tmp16);
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cli();
sensor[i].meterconst = tmp16;
sei();
ctrlWriteCharToTxBuffer(i);
ctrlWriteShortToTxBuffer(sensor[i].meterconst);
}
break;
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case 'w': /* watchdog counter */
ctrlReadShortFromRxBuffer(&tmp16);
cli();
event.wdt = tmp16;
sei();
ctrlWriteShortToTxBuffer(event.wdt);
break;
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case 'b': /* brown-out counter */
ctrlReadShortFromRxBuffer(&tmp16);
cli();
event.brown_out = tmp16;
sei();
ctrlWriteShortToTxBuffer(event.brown_out);
break;
}
}
void ctrlCmdCommit(void)
{
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cli();
eeprom_write_block((const void*)&version, (void*)&EEPROM_version, sizeof(version));
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eeprom_write_block((const void*)&event, (void*)&EEPROM_event, sizeof(event));
eeprom_write_block((const void*)&enabled, (void*)&EEPROM_enabled, sizeof(enabled));
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eeprom_write_block((const void*)&phy_to_log, (void*)&EEPROM_phy_to_log, sizeof(phy_to_log));
eeprom_write_block((const void*)&sensor, (void*)&EEPROM_sensor, sizeof(sensor));
sei();
}