picctl: graphlcd-base/glcddrivers/avrctl.c@37602e25a04a

     1 /*

     2  * GraphLCD driver library

     3  *

     4  * avrctl.c  -  AVR controlled LCD driver class

     5  *

     6  * This file is released under the GNU General Public License. Refer

     7  * to the COPYING file distributed with this package.

     8  *

     9  * (c) 2005 Andreas Regel <andreas.regel AT powarman.de>

    10  */

    12 #include <stdint.h>

    13 #include <syslog.h>

    15 #include "common.h"

    16 #include "config.h"

    17 #include "port.h"

    18 #include "avrctl.h"

    21 namespace GLCD

    22 {

    24 /* command header:

    25 **  8 bits  sync byte (0xAA for sent commands, 0x55 for received commands)

    26 **  8 bits  command id

    27 ** 16 bits  command length (excluding header)

    28 */

    29 const unsigned char CMD_HDR_SYNC    = 0;

    30 const unsigned char CMD_HDR_COMMAND = 1;

    31 const unsigned char CMD_HDR_LENGTH  = 2;

    32 const unsigned char CMD_DATA_START  = 4;

    34 const unsigned char CMD_SYNC_SEND = 0xAA;

    35 const unsigned char CMD_SYNC_RECV = 0x55;

    37 const unsigned char CMD_SYS_SYNC = 0x00;

    38 const unsigned char CMD_SYS_ACK  = 0x01;

    40 const unsigned char CMD_DISP_CLEAR_SCREEN   = 0x10;

    41 const unsigned char CMD_DISP_SWITCH_SCREEN  = 0x11;

    42 const unsigned char CMD_DISP_SET_BRIGHTNESS = 0x12;

    43 const unsigned char CMD_DISP_SET_COL_DATA   = 0x13;

    44 const unsigned char CMD_DISP_SET_ROW_DATA   = 0x14;

    45 const unsigned char CMD_DISP_UPDATE         = 0x15;

    47 const int kBufferWidth  = 256;

    48 const int kBufferHeight = 128;

    51 cDriverAvrCtl::cDriverAvrCtl(cDriverConfig * config)

    52 :   config(config)

    53 {

    54     oldConfig = new cDriverConfig(*config);

    56     port = new cSerialPort();

    58     //width = config->width;

    59     //height = config->height;

    60     refreshCounter = 0;

    61 }

    63 cDriverAvrCtl::~cDriverAvrCtl()

    64 {

    65     delete port;

    66     delete oldConfig;

    67 }

    69 int cDriverAvrCtl::Init()

    70 {

    71     int x;

    73     width = config->width;

    74     if (width <= 0)

    75         width = 256;

    76     height = config->height;

    77     if (height <= 0)

    78         height = 128;

    80     for (unsigned int i = 0; i < config->options.size(); i++)

    81     {

    82         if (config->options[i].name == "")

    83         {

    84         }

    85     }

    87     // setup lcd array (wanted state)

    88     newLCD = new unsigned char*[kBufferWidth];

    89     if (newLCD)

    90     {

    91         for (x = 0; x < kBufferWidth; x++)

    92         {

    93             newLCD[x] = new unsigned char[(kBufferHeight + 7) / 8];

    94             memset(newLCD[x], 0, (kBufferHeight + 7) / 8);

    95         }

    96     }

    97     // setup lcd array (current state)

    98     oldLCD = new unsigned char*[kBufferWidth];

    99     if (oldLCD)

   100     {

   101         for (x = 0; x < kBufferWidth; x++)

   102         {

   103             oldLCD[x] = new unsigned char[(kBufferHeight + 7) / 8];

   104             memset(oldLCD[x], 0, (kBufferHeight + 7) / 8);

   105         }

   106     }

   108     if (config->device == "")

   109     {

   110         return -1;

   111     }

   112     if (port->Open(config->device.c_str()) != 0)

   113         return -1;

   115     *oldConfig = *config;

   117     // clear display

   118     Clear();

   120     syslog(LOG_INFO, "%s: AvrCtl initialized.\n", config->name.c_str());

   121     return 0;

   122 }

   124 int cDriverAvrCtl::DeInit()

   125 {

   126     int x;

   127     // free lcd array (wanted state)

   128     if (newLCD)

   129     {

   130         for (x = 0; x < kBufferWidth; x++)

   131         {

   132             delete[] newLCD[x];

   133         }

   134         delete[] newLCD;

   135     }

   136     // free lcd array (current state)

   137     if (oldLCD)

   138     {

   139         for (x = 0; x < kBufferWidth; x++)

   140         {

   141             delete[] oldLCD[x];

   142         }

   143         delete[] oldLCD;

   144     }

   146     if (port->Close() != 0)

   147         return -1;

   148     return 0;

   149 }

   151 int cDriverAvrCtl::CheckSetup()

   152 {

   153     if (config->device != oldConfig->device ||

   154         config->width != oldConfig->width ||

   155         config->height != oldConfig->height)

   156     {

   157         DeInit();

   158         Init();

   159         return 0;

   160     }

   162     if (config->upsideDown != oldConfig->upsideDown ||

   163         config->invert != oldConfig->invert)

   164     {

   165         oldConfig->upsideDown = config->upsideDown;

   166         oldConfig->invert = config->invert;

   167         return 1;

   168     }

   169     return 0;

   170 }

   172 void cDriverAvrCtl::Clear()

   173 {

   174     for (int x = 0; x < kBufferWidth; x++)

   175         memset(newLCD[x], 0, (kBufferHeight + 7) / 8);

   176 }

   178 void cDriverAvrCtl::Set8Pixels(int x, int y, unsigned char data)

   179 {

   180     if (x >= width || y >= height)

   181         return;

   183     if (!config->upsideDown)

   184     {

   185         int offset = 7 - (y % 8);

   186         for (int i = 0; i < 8; i++)

   187         {

   188             newLCD[x + i][y / 8] |= ((data >> (7 - i)) << offset) & (1 << offset);

   189         }

   190     }

   191     else

   192     {

   193         x = width - 1 - x;

   194         y = height - 1 - y;

   195         int offset = 7 - (y % 8);

   196         for (int i = 0; i < 8; i++)

   197         {

   198             newLCD[x - i][y / 8] |= ((data >> (7 - i)) << offset) & (1 << offset);

   199         }

   200     }

   201 }

   203 void cDriverAvrCtl::Refresh(bool refreshAll)

   204 {

   205     int x;

   206     int y;

   207     int i;

   208     int num = kBufferWidth / 2;

   209     unsigned char data[16*num];

   211     if (CheckSetup() == 1)

   212         refreshAll = true;

   214     if (config->refreshDisplay > 0)

   215     {

   216         refreshCounter = (refreshCounter + 1) % config->refreshDisplay;

   217         if (!refreshAll && !refreshCounter)

   218             refreshAll = true;

   219     }

   221     refreshAll = true;

   222     if (refreshAll)

   223     {

   224         for (x = 0; x < kBufferWidth; x += num)

   225         {

   226             for (i = 0; i < num; i++)

   227             {

   228                 for (y = 0; y < (kBufferHeight + 7) / 8; y++)

   229                 {

   230                     data[i * ((kBufferHeight + 7) / 8) + y] = (newLCD[x + i][y]) ^ (config->invert ? 0xff : 0x00);

   231                 }

   232                 memcpy(oldLCD[x + i], newLCD[x + i], (kBufferHeight + 7) / 8);

   233             }

   234             CmdDispSetColData(x, 0, 16 * num, data);

   235         }

   236         CmdDispUpdate();

   237         CmdDispSwitchScreen();

   238         // and reset RefreshCounter

   239         refreshCounter = 0;

   240     }

   241     else

   242     {

   243         // draw only the changed bytes

   244     }

   245 }

   247 void cDriverAvrCtl::SetBrightness(unsigned int percent)

   248 {

   249   CmdDispSetBrightness(percent);

   250 }

   252 int cDriverAvrCtl::WaitForAck(void)

   253 {

   254     uint8_t cmd[4];

   255     int len;

   256     int timeout = 10000;

   258     len = 0;

   259     while (len < 4 && timeout > 0)

   260     {

   261         len += port->ReadData(&cmd[len]);

   262         timeout--;

   263     }

   264     if (timeout == 0)

   265         return 0;

   266     return 1;

   267 }

   269 void cDriverAvrCtl::CmdSysSync(void)

   270 {

   271     uint8_t cmd[4];

   273     cmd[CMD_HDR_SYNC] = CMD_SYNC_SEND;

   274     cmd[CMD_HDR_COMMAND] = CMD_SYS_SYNC;

   275     cmd[CMD_HDR_LENGTH] = 0;

   276     cmd[CMD_HDR_LENGTH+1] = 0;

   278     port->WriteData(cmd, 4);

   279     WaitForAck();

   280 }

   282 void cDriverAvrCtl::CmdDispClearScreen(void)

   283 {

   284     uint8_t cmd[4];

   286     cmd[CMD_HDR_SYNC] = CMD_SYNC_SEND;

   287     cmd[CMD_HDR_COMMAND] = CMD_DISP_CLEAR_SCREEN;

   288     cmd[CMD_HDR_LENGTH] = 0;

   289     cmd[CMD_HDR_LENGTH+1] = 0;

   291     port->WriteData(cmd, 4);

   292     WaitForAck();

   293 }

   295 void cDriverAvrCtl::CmdDispSwitchScreen(void)

   296 {

   297     uint8_t cmd[4];

   299     cmd[CMD_HDR_SYNC] = CMD_SYNC_SEND;

   300     cmd[CMD_HDR_COMMAND] = CMD_DISP_SWITCH_SCREEN;

   301     cmd[CMD_HDR_LENGTH] = 0;

   302     cmd[CMD_HDR_LENGTH+1] = 0;

   304     port->WriteData(cmd, 4);

   305     WaitForAck();

   306 }

   308 void cDriverAvrCtl::CmdDispSetBrightness(uint8_t percent)

   309 {

   310     uint8_t cmd[5];

   312     cmd[CMD_HDR_SYNC] = CMD_SYNC_SEND;

   313     cmd[CMD_HDR_COMMAND] = CMD_DISP_SET_BRIGHTNESS;

   314     cmd[CMD_HDR_LENGTH] = 0;

   315     cmd[CMD_HDR_LENGTH+1] = 1;

   316     cmd[CMD_DATA_START] = percent;

   318     port->WriteData(cmd, 5);

   319     WaitForAck();

   320 }

   322 void cDriverAvrCtl::CmdDispSetColData(uint16_t column, uint16_t offset, uint16_t length, uint8_t * data)

   323 {

   324     uint8_t cmd[2560];

   326     cmd[CMD_HDR_SYNC] = CMD_SYNC_SEND;

   327     cmd[CMD_HDR_COMMAND] = CMD_DISP_SET_COL_DATA;

   328     cmd[CMD_HDR_LENGTH] = (length + 6) >> 8;

   329     cmd[CMD_HDR_LENGTH+1] = (length + 6);

   330     cmd[CMD_DATA_START] = column >> 8;

   331     cmd[CMD_DATA_START+1] = column;

   332     cmd[CMD_DATA_START+2] = offset >> 8;

   333     cmd[CMD_DATA_START+3] = offset;

   334     cmd[CMD_DATA_START+4] = length >> 8;

   335     cmd[CMD_DATA_START+5] = length;

   336     memcpy(&cmd[CMD_DATA_START+6], data, length);

   338     port->WriteData(cmd, length+10);

   339     WaitForAck();

   340 }

   342 void cDriverAvrCtl::CmdDispUpdate(void)

   343 {

   344     uint8_t cmd[4];

   346     cmd[CMD_HDR_SYNC] = CMD_SYNC_SEND;

   347     cmd[CMD_HDR_COMMAND] = CMD_DISP_UPDATE;

   348     cmd[CMD_HDR_LENGTH] = 0;

   349     cmd[CMD_HDR_LENGTH+1] = 0;

   351     port->WriteData(cmd, 4);

   352     WaitForAck();

   353 }

   355 }

author	root@rika
	Wed, 06 Feb 2008 17:37:50 +0000
changeset 5	37602e25a04a
parent 4	df6a40031aa5
child 10	9798f65f2f35
permissions	-rw-r--r--