406 lines
7.7 KiB
C
406 lines
7.7 KiB
C
//
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// ctrl.c : AVR uC code for ctrl buffer initialisation and put/get ops
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//
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// Copyright (c) 2010 flukso.net
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program 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
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// GNU General 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
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#include <avr/eeprom.h>
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#include <util/crc16.h>
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#include "global.h"
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#include "main.h"
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#include "buffer.h"
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#include "ctrl.h"
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#include "encode.h"
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cBuffer ctrlRxBuffer; // ctrl receive buffer
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cBuffer ctrlTxBuffer; // ctrl transmit buffer
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static char ctrlRxData[CTRL_RX_BUFFER_SIZE];
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static char ctrlTxData[CTRL_TX_BUFFER_SIZE];
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extern struct version_struct EEMEM EEPROM_version;
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extern struct version_struct version;
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extern struct event_struct EEMEM EEPROM_event;
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extern struct event_struct event;
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extern uint8_t EEMEM EEPROM_phy_to_log[MAX_SENSORS];
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extern uint8_t phy_to_log[MAX_SENSORS];
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extern struct sensor_struct EEMEM EEPROM_sensor[MAX_SENSORS];
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extern struct sensor_struct sensor[MAX_SENSORS];
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extern struct state_struct state[MAX_SENSORS];
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void ctrlInit(void)
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{
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// initialize the CTRL receive buffer
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bufferInit(&ctrlRxBuffer, (u08*) ctrlRxData, CTRL_RX_BUFFER_SIZE);
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// initialize the CTRL transmit buffer
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bufferInit(&ctrlTxBuffer, (u08*) ctrlTxData, CTRL_TX_BUFFER_SIZE);
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}
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uint8_t ctrlTxBufferIsEmpty(void)
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{
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if(ctrlTxBuffer.datalength == 0) {
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlAddToTxBuffer(uint8_t data)
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{
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return bufferAddToEnd(&ctrlTxBuffer, data);
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}
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uint8_t ctrlGetFromTxBuffer(uint8_t* data) {
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// make sure we have data in the Tx buffer
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if(ctrlTxBuffer.datalength) {
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// get byte from beginning of buffer
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*data = bufferGetFromFront(&ctrlTxBuffer);
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return TRUE;
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}
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else {
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// no data
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return FALSE;
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}
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}
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uint8_t ctrlRxBufferIsEmpty(void)
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{
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if(ctrlRxBuffer.datalength == 0) {
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlAddToRxBuffer(uint8_t data)
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{
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return bufferAddToEnd(&ctrlRxBuffer, data);
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}
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uint8_t ctrlGetFromRxBuffer(uint8_t* pdata)
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{
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// make sure we have data in the Rx buffer
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if(ctrlRxBuffer.datalength) {
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// get byte from beginning of buffer
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*pdata = bufferGetFromFront(&ctrlRxBuffer);
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return TRUE;
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}
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else {
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// no data
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return FALSE;
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}
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}
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void ctrlFlushRxBuffer(void)
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{
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ctrlRxBuffer.datalength = 0;
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}
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void ctrlFlushTxBuffer(void)
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{
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ctrlTxBuffer.datalength = 0;
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}
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uint8_t ctrlReadCharFromRxBuffer(uint8_t* pdata)
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{
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uint8_t high_hex, low_hex;
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if (ctrlGetFromRxBuffer(&high_hex) && ctrlGetFromRxBuffer(&low_hex)) {
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htob(high_hex, low_hex, pdata);
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlReadShortFromRxBuffer(uint16_t* pdata)
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{
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uint8_t high_char, low_char;
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if(ctrlReadCharFromRxBuffer(&high_char) && ctrlReadCharFromRxBuffer(&low_char)) {
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*pdata = ((uint16_t)high_char << 8) + low_char;
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlReadLongFromRxBuffer(uint32_t* pdata)
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{
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uint16_t high_short, low_short;
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if(ctrlReadShortFromRxBuffer(&high_short) && ctrlReadShortFromRxBuffer(&low_short)) {
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*pdata = ((uint32_t)high_short << 16) + low_short;
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlWriteCharToTxBuffer(uint8_t data)
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{
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uint8_t high_hex, low_hex;
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btoh(data, &high_hex, &low_hex);
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if (ctrlAddToTxBuffer(high_hex) && ctrlAddToTxBuffer(low_hex)) {
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlWriteShortToTxBuffer(uint16_t data)
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{
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if (ctrlWriteCharToTxBuffer((uint8_t)(data >> 8)) && ctrlWriteCharToTxBuffer((uint8_t)data)) {
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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uint8_t ctrlWriteLongToTxBuffer(uint32_t data)
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{
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if (ctrlWriteShortToTxBuffer((uint16_t)(data >> 16)) && ctrlWriteShortToTxBuffer((uint16_t)data)) {
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return TRUE;
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}
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else {
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return FALSE;
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}
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}
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void ctrlRxToTxLoop(void)
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{
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uint8_t data;
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while (ctrlGetFromRxBuffer(&data)) {
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ctrlAddToTxBuffer(data);
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}
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}
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uint8_t ctrlCalcCrc8(cBuffer* buffer)
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{
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uint8_t i, crc = 0;
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for (i = 0; i < buffer->datalength; i++) {
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crc = _crc_ibutton_update(crc, bufferGetAtIndex(buffer, i));
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}
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return crc;
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}
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void ctrlDecode(void)
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{
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uint8_t cmd[2], crc;
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ctrlFlushTxBuffer();
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if (ctrlGetFromRxBuffer(cmd) && ctrlGetFromRxBuffer(cmd+1)) {
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ctrlAddToTxBuffer(cmd[0]);
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ctrlAddToTxBuffer(cmd[1]);
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switch (cmd[0]) {
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case 'g':
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ctrlCmdGet(cmd[1]);
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break;
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case 's':
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ctrlCmdSet(cmd[1]);
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break;
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case 'c':
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if (cmd[1] == 't') ctrlCmdCommit();
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break;
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default:
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ctrlAddToTxBuffer('z');
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}
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crc = ctrlCalcCrc8(&ctrlTxBuffer);
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ctrlWriteCharToTxBuffer(crc);
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ctrlAddToTxBuffer('.');
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}
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ctrlFlushRxBuffer();
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}
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void ctrlCmdGet(uint8_t cmd)
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{
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uint8_t i = 0;
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uint32_t tmp32, tmp32_bis;
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switch (cmd) {
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case 'h':
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ctrlWriteShortToTxBuffer(version.hw_major);
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ctrlWriteCharToTxBuffer(version.hw_minor);
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break;
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case 's':
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ctrlWriteCharToTxBuffer(version.sw_major);
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ctrlWriteCharToTxBuffer(version.sw_minor);
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break;
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case 'p':
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for (i = 0 ; i < MAX_SENSORS; i++) {
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ctrlWriteCharToTxBuffer(phy_to_log[i]);
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}
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break;
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case 'c':
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ctrlReadCharFromRxBuffer(&i);
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cli();
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tmp32 = sensor[i].counter;
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sei();
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ctrlWriteLongToTxBuffer(tmp32);
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break;
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case 'm':
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ctrlReadCharFromRxBuffer(&i);
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ctrlWriteShortToTxBuffer(sensor[i].meterconst);
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break;
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case 'w':
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ctrlWriteShortToTxBuffer(event.wdt);
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break;
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case 'b':
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ctrlWriteShortToTxBuffer(event.brown_out);
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break;
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case 'd':
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for (i = 0 ; i < MAX_SENSORS; i++) {
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if (state[i].flags & (STATE_PULSE | STATE_POWER)) {
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ctrlWriteCharToTxBuffer(i);
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cli();
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tmp32 = sensor[i].counter;
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tmp32_bis = (i < 3) ? state[i].power : state[i].timestamp;
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sei();
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ctrlWriteLongToTxBuffer(tmp32);
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ctrlWriteLongToTxBuffer(tmp32_bis);
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state[i].flags &= ~(STATE_PULSE | STATE_POWER);
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}
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}
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break;
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default:
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ctrlAddToTxBuffer('z');
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}
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}
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void ctrlCmdSet(uint8_t cmd)
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{
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uint8_t i = 0, tmp8 = 0, tmp8_bis = 0;
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uint16_t tmp16 = 0;
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uint32_t tmp32 = 0;
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switch (cmd) {
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case 'h':
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ctrlReadShortFromRxBuffer(&tmp16);
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ctrlReadCharFromRxBuffer(&tmp8);
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cli();
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version.hw_major = tmp16;
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version.hw_minor = tmp8;
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sei();
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break;
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case 's':
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ctrlReadCharFromRxBuffer(&tmp8);
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ctrlReadCharFromRxBuffer(&tmp8_bis);
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cli();
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version.sw_major = tmp8;
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version.sw_minor = tmp8_bis;
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sei();
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case 'p':
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for (i = 0 ; i < MAX_SENSORS; i++) {
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ctrlReadCharFromRxBuffer(&tmp8);
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cli();
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phy_to_log[i] = tmp8;
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sei();
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}
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break;
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case 'c':
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ctrlReadCharFromRxBuffer(&i);
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ctrlReadLongFromRxBuffer(&tmp32);
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cli();
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sensor[i].counter = tmp32;
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sei();
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break;
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case 'm':
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ctrlReadCharFromRxBuffer(&i);
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ctrlReadShortFromRxBuffer(&tmp16);
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cli();
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sensor[i].meterconst = tmp16;
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sei();
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break;
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case 'w':
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ctrlReadShortFromRxBuffer(&tmp16);
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cli();
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event.wdt = tmp16;
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sei();
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break;
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case 'b':
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ctrlReadShortFromRxBuffer(&tmp16);
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cli();
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event.brown_out = tmp16;
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sei();
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break;
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default:
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ctrlAddToTxBuffer('z');
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}
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}
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void ctrlCmdCommit(void)
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{
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cli();
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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));
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eeprom_write_block((const void*)&phy_to_log, (void*)&EEPROM_phy_to_log, sizeof(phy_to_log));
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eeprom_write_block((const void*)&sensor, (void*)&EEPROM_sensor, sizeof(sensor));
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sei();
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}
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