diff options
Diffstat (limited to 'drv_Crystalfontz.c')
| -rw-r--r-- | drv_Crystalfontz.c | 1185 |
1 files changed, 1185 insertions, 0 deletions
diff --git a/drv_Crystalfontz.c b/drv_Crystalfontz.c new file mode 100644 index 0000000..9b11587 --- /dev/null +++ b/drv_Crystalfontz.c @@ -0,0 +1,1185 @@ +/* $Id: drv_Crystalfontz.c 906 2008-12-23 14:55:32Z michael $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_Crystalfontz.c $ + * + * new style driver for Crystalfontz display modules + * + * Copyright (C) 1999, 2000 Michael Reinelt <michael@reinelt.co.at> + * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> + * + * This file is part of LCD4Linux. + * + * LCD4Linux 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, or (at your option) + * any later version. + * + * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +/* + * + * exported fuctions: + * + * struct DRIVER drv_Crystalfontz + * + */ + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <sys/time.h> + +#include "debug.h" +#include "cfg.h" +#include "qprintf.h" +#include "thread.h" +#include "timer.h" +#include "plugin.h" +#include "widget.h" +#include "widget_text.h" +#include "widget_icon.h" +#include "widget_bar.h" +#include "widget_keypad.h" +#include "drv.h" +#include "drv_generic_text.h" +#include "drv_generic_gpio.h" +#include "drv_generic_serial.h" +#include "drv_generic_keypad.h" + + +static char Name[] = "Crystalfontz"; + +static int Model; +static int Protocol; +static int Payload; + +/* ring buffer for bytes received from the display */ +static unsigned char RingBuffer[256]; +static unsigned int RingRPos = 0; +static unsigned int RingWPos = 0; + +/* packet from the display */ +struct { + unsigned char type; + unsigned char code; + unsigned char size; + unsigned char data[16 + 1]; /* trailing '\0' */ +} Packet; + +/* Line Buffer for 633 displays */ +static unsigned char Line[2 * 16]; + +/* Fan RPM */ +static double Fan_RPM[4] = { 0.0, }; + +/* Temperature sensors */ +static double Temperature[32] = { 0.0, }; + + +typedef struct { + int type; + char *name; + int rows; + int cols; + int gpis; + int gpos; + int protocol; + int payload; +} MODEL; + +/* Fixme #1: number of GPI's & GPO's should be verified */ +/* Fixme #2: protocol should be verified */ +/* Fixme #3: number of keys on the keypad should be verified */ + +static MODEL Models[] = { + {626, "626", 2, 16, 0, 0, 1, 0}, + {631, "631", 2, 20, 4, 0, 3, 22}, + {632, "632", 2, 16, 0, 0, 1, 0}, + {633, "633", 2, 16, 4, 4, 2, 18}, + {634, "634", 4, 20, 0, 0, 1, 0}, + {635, "635", 4, 20, 4, 12, 3, 22}, + {636, "636", 2, 16, 0, 0, 1, 0}, + {-1, "Unknown", -1, -1, 0, 0, 0, 0} +}; + + +/****************************************/ +/*** hardware dependant functions ***/ +/****************************************/ + +/* x^0 + x^5 + x^12 */ +#define CRCPOLY 0x8408 + +static unsigned short CRC(const unsigned char *p, size_t len, unsigned short seed) +{ + int i; + while (len--) { + seed ^= *p++; + for (i = 0; i < 8; i++) + seed = (seed >> 1) ^ ((seed & 1) ? CRCPOLY : 0); + } + return ~seed; +} + +static unsigned char LSB(const unsigned short word) +{ + return word & 0xff; +} + +static unsigned char MSB(const unsigned short word) +{ + return word >> 8; +} + + +static unsigned char byte(unsigned int pos) +{ + pos += RingRPos; + if (pos >= sizeof(RingBuffer)) + pos -= sizeof(RingBuffer); + return RingBuffer[pos]; +} + + +static void drv_CF_process_packet(void) +{ + + switch (Packet.type) { + + case 0x02: + + /* async response from display to host */ + switch (Packet.code) { + + case 0x00: + /* Key Activity */ + debug("Key Activity: %d", Packet.data[0]); + drv_generic_keypad_press(Packet.data[0]); + break; + + case 0x01: + /* Fan Speed Report */ + if (Packet.data[1] == 0xff) { + Fan_RPM[Packet.data[0]] = -1.0; + } else if (Packet.data[1] < 4) { + Fan_RPM[Packet.data[0]] = 0.0; + } else { + Fan_RPM[Packet.data[0]] = + (double) 27692308L *(Packet.data[1] - 3) / (Packet.data[2] + 256 * Packet.data[3]); + } + break; + + case 0x02: + /* Temperature Sensor Report */ + switch (Packet.data[3]) { + case 0: + error("%s: 1-Wire device #%d: CRC error", Name, Packet.data[0]); + break; + case 1: + case 2: + Temperature[Packet.data[0]] = (Packet.data[1] + 256 * Packet.data[2]) / 16.0; + break; + default: + error("%s: 1-Wire device #%d: unknown CRC status %d", Name, Packet.data[0], Packet.data[3]); + break; + } + break; + + default: + /* this should not happen */ + error("%s: unexpected response type=0x%02x code=0x%02x size=%d", Name, Packet.type, Packet.code, + Packet.size); + break; + } + + break; + + case 0x03: + /* error response from display to host */ + error("%s: error response type=0x%02x code=0x%02x size=%d", Name, Packet.type, Packet.code, Packet.size); + break; + + default: + /* these should not happen: */ + /* type 0x00: command from host to display: should never come back */ + /* type 0x01: command response from display to host: are processed within send() */ + error("%s: unexpected packet type=0x%02x code=0x%02x size=%d", Name, Packet.type, Packet.code, Packet.size); + break; + } + +} + + +static int drv_CF_poll(void) +{ + /* read into RingBuffer */ + while (1) { + char buffer[32]; + int num, n; + num = drv_generic_serial_poll(buffer, sizeof(buffer)); + if (num <= 0) + break; + /* put result into RingBuffer */ + for (n = 0; n < num; n++) { + RingBuffer[RingWPos++] = (unsigned char) buffer[n]; + if (RingWPos >= sizeof(RingBuffer)) + RingWPos = 0; + } + } + + /* process RingBuffer */ + while (1) { + unsigned char buffer[32]; + int n, num, size; + unsigned short crc; + /* packet size */ + num = RingWPos - RingRPos; + if (num < 0) + num += sizeof(RingBuffer); + /* minimum packet size=4 */ + if (num < 4) + return 0; + /* valid response types: 01xxxxx 10.. 11.. */ + /* therefore: 00xxxxxx is invalid */ + if (byte(0) >> 6 == 0) + goto GARBAGE; + /* command length */ + size = byte(1); + /* valid command length is 0 to 16 */ + if (size > 16) + goto GARBAGE; + /* all bytes available? */ + if (num < size + 4) + return 0; + /* check CRC */ + for (n = 0; n < size + 4; n++) + buffer[n] = byte(n); + crc = CRC(buffer, size + 2, 0xffff); + if (LSB(crc) != buffer[size + 2]) + goto GARBAGE; + if (MSB(crc) != buffer[size + 3]) + goto GARBAGE; + /* process packet */ + Packet.type = buffer[0] >> 6; + Packet.code = buffer[0] & 0x3f; + Packet.size = size; + memcpy(Packet.data, buffer + 2, size); + Packet.data[size] = '\0'; /* trailing zero */ + /* increment read pointer */ + RingRPos += size + 4; + if (RingRPos >= sizeof(RingBuffer)) + RingRPos -= sizeof(RingBuffer); + /* a packet arrived */ + return 1; + GARBAGE: + debug("dropping garbage byte %02x", byte(0)); + RingRPos++; + if (RingRPos >= sizeof(RingBuffer)) + RingRPos = 0; + continue; + } + + /* not reached */ + return 0; +} + + +static void drv_CF_timer(void __attribute__ ((unused)) * notused) +{ + while (drv_CF_poll()) { + drv_CF_process_packet(); + } +} + + +static void drv_CF_send(const unsigned char cmd, const unsigned char len, const unsigned char *data) +{ + /* 1 cmd + 1 len + 22 payload + 2 crc = 26 */ + unsigned char buffer[26]; + unsigned short crc; + struct timeval now, end; + + if (len > Payload) { + error("%s: internal error: packet length %d exceeds payload size %d", Name, len, Payload); + return; + } + + buffer[0] = cmd; + buffer[1] = len; + memcpy(buffer + 2, data, len); + crc = CRC(buffer, len + 2, 0xffff); + buffer[len + 2] = LSB(crc); + buffer[len + 3] = MSB(crc); + + drv_generic_serial_write((char *) buffer, len + 4); + + /* wait for acknowledge packet */ + gettimeofday(&now, NULL); + while (1) { + /* delay 1 msec */ + usleep(1 * 1000); + if (drv_CF_poll()) { + if (Packet.type == 0x01 && Packet.code == cmd) { + /* this is the ack we're waiting for */ + if (0) { + gettimeofday(&end, NULL); + debug("%s: ACK after %ld usec", Name, + 1000000 * (end.tv_sec - now.tv_sec) + end.tv_usec - now.tv_usec); + } + break; + } else { + /* some other (maybe async) packet, just process it */ + drv_CF_process_packet(); + } + } + gettimeofday(&end, NULL); + /* don't wait more than 250 msec */ + if ((1000000 * (end.tv_sec - now.tv_sec) + end.tv_usec - now.tv_usec) > 250 * 1000) { + error("%s: timeout waiting for response to cmd 0x%02x", Name, cmd); + break; + } + } +} + + +/* check http://www.crystalfontz.com/products/634/cgrom.html */ +/* HINT: the input should using the ISO-8859-1 charset */ +void convertToCgrom2(char *str) +{ + unsigned int i; + for (i = 0; i < strlen(str); i++) { + switch ((unsigned char) str[i]) { + case 0x5d: /* ] */ + str[i] = 252; + break; + case 0x5b: /* [ */ + str[i] = 250; + break; + case 0x24: /* $ */ + str[i] = 162; + break; + case 0x40: /* @ */ + str[i] = 160; + break; + case 0x5c: /* \ */ + str[i] = 251; + break; + case 0x7b: /* { */ + str[i] = 253; + break; + case 0x7d: /* } */ + str[i] = 255; + break; + case 0x7c: + str[i] = 254; /* pipe */ + break; + case 0x27: + case 0x60: + case 0xB4: + str[i] = 39; /* ' */ + break; + case 0xe8: + str[i] = 164; /* french e */ + break; + case 0xe9: + str[i] = 165; /* french e */ + break; + case 0xc8: + str[i] = 197; /* french E */ + break; + case 0xc9: + str[i] = 207; /* french E */ + break; + + case 0xe4: + str[i] = 123; /* small german ae */ + break; + case 0xc4: + str[i] = 91; /* big german ae */ + break; + case 0xf6: + str[i] = 124; /* small german oe */ + break; + case 0xd6: + str[i] = 92; /* big german oe */ + break; + case 0xfc: + str[i] = 126; /* small german ue */ + break; + case 0xdc: + str[i] = 94; /* big german ue */ + break; + case 0x5e: /* ^ */ + str[i] = 253; + break; + case 0x5f: /* _ */ + str[i] = 254; + break; + default: + break; + } + } +} + + +static void drv_CF_write1(const int row, const int col, const char *data, const int len) +{ + char cmd[3] = "\021xy"; /* set cursor position */ + + if (row == 0 && col == 0) { + drv_generic_serial_write("\001", 1); /* cursor home */ + } else { + cmd[1] = (char) col; + cmd[2] = (char) row; + drv_generic_serial_write(cmd, 3); + } + + /* Model 634 and 632 use another ROM */ + if (Model == 4 || Model == 2) { + convertToCgrom2((char *) data); + } + + drv_generic_serial_write(data, len); +} + + +static void drv_CF_write2(const int row, const int col, const char *data, const int len) +{ + int l = len; + + /* limit length */ + if (col + l > 16) + l = 16 - col; + if (l < 0) + l = 0; + + /* sanity check */ + if (row >= 2 || col + l > 16) { + error("%s: internal error: write outside linebuffer bounds!", Name); + return; + } + memcpy(Line + 16 * row + col, data, l); + drv_CF_send(7 + row, 16, (unsigned char *) (Line + 16 * row)); +} + + +static void drv_CF_write3(const int row, const int col, const char *data, const int len) +{ + int l = len; + unsigned char cmd[23]; + + /* limit length */ + if (col + l > DCOLS) + l = DCOLS - col; + if (l < 0) + l = 0; + + /* sanity check */ + if (row >= DROWS || col + l > DCOLS) { + error("%s: internal error: write outside display bounds!", Name); + return; + } + + cmd[0] = col; + cmd[1] = row; + memcpy(cmd + 2, data, l); + + drv_CF_send(31, l + 2, cmd); +} + + +static void drv_CF_defchar1(const int ascii, const unsigned char *matrix) +{ + int i; + char cmd[10] = "\031n"; /* set custom char bitmap */ + + /* user-defineable chars start at 128, but are defined at 0 */ + cmd[1] = (char) (ascii - CHAR0); + for (i = 0; i < 8; i++) { + cmd[i + 2] = matrix[i] & 0x3f; + } + drv_generic_serial_write(cmd, 10); +} + + +static void drv_CF_defchar23(const int ascii, const unsigned char *matrix) +{ + int i; + unsigned char buffer[9]; + + /* user-defineable chars start at 128, but are defined at 0 */ + buffer[0] = (char) (ascii - CHAR0); + + /* clear bit 6 and 7 of the bitmap (blinking) */ + for (i = 0; i < 8; i++) { + buffer[i + 1] = matrix[i] & 0x3f; + } + + drv_CF_send(9, 9, buffer); +} + + +static int drv_CF_contrast(int contrast) +{ + static unsigned char Contrast = 0; + char buffer[2]; + + /* -1 is used to query the current contrast */ + if (contrast == -1) + return Contrast; + + if (contrast < 0) + contrast = 0; + if (contrast > 255) + contrast = 255; + Contrast = contrast; + + switch (Protocol) { + + case 1: + /* contrast range 0 to 100 */ + if (Contrast > 100) + Contrast = 100; + buffer[0] = 15; /* Set LCD Contrast */ + buffer[1] = Contrast; + drv_generic_serial_write(buffer, 2); + break; + + case 2: + /* contrast range 0 to 50 */ + if (Contrast > 50) + Contrast = 50; + drv_CF_send(13, 1, &Contrast); + break; + + case 3: + /* contrast range 0 to 255 */ + drv_CF_send(13, 1, &Contrast); + break; + } + + return Contrast; +} + + +static int drv_CF_backlight(int backlight) +{ + static unsigned char Backlight = 0; + char buffer[2]; + + /* -1 is used to query the current backlight */ + if (backlight == -1) + return Backlight; + + if (backlight < 0) + backlight = 0; + if (backlight > 100) + backlight = 100; + Backlight = backlight; + + switch (Protocol) { + + case 1: + buffer[0] = 14; /* Set LCD Backlight */ + buffer[1] = Backlight; + drv_generic_serial_write(buffer, 2); + break; + + case 2: + case 3: + drv_CF_send(14, 1, &Backlight); + break; + } + + return Backlight; +} + + +static int drv_CF_keypad(const int num) +{ + int val = 0; + + switch (Protocol) { + case 1: + case 2: + break; + case 3: + if ((num < 7) || ((num > 12) && (num < 17))) + val = WIDGET_KEY_PRESSED; + else + val = WIDGET_KEY_RELEASED; + switch (num) { + case 1: + case 7: + val += WIDGET_KEY_UP; + break; + case 2: + case 8: + val += WIDGET_KEY_DOWN; + break; + case 3: + case 9: + val += WIDGET_KEY_LEFT; + break; + case 4: + case 10: + val += WIDGET_KEY_RIGHT; + break; + case 5: + case 11: + val += WIDGET_KEY_CONFIRM; + break; + case 6: + case 12: + val += WIDGET_KEY_CANCEL; + break; + + /* added for 631, too lazy to make new WIDGET_KEY defines */ + case 13: + case 17: + val += WIDGET_KEY_UP; /* really UPLEFT */ + break; + case 14: + case 18: + val += WIDGET_KEY_RIGHT; /* really UPRIGHT */ + break; + case 15: + case 19: + val += WIDGET_KEY_LEFT; /* really DOWNLEFT */ + break; + case 16: + case 20: + val += WIDGET_KEY_DOWN; /* really DOWNRIGHT */ + break; + } + break; + } + + return val; +} + + +static int drv_CF_GPI(const int num) +{ + if (num < 0 || num > 3) { + return 0; + } + return Fan_RPM[num]; +} + + +static int drv_CF_GPO(const int num, const int val) +{ + static unsigned char PWM2[4] = { 0, 0, 0, 0 }; + static unsigned char PWM3[2]; + + int v = val; + + if (v < 0) + v = 0; + if (v > 100) + v = 100; + + switch (Protocol) { + case 2: + PWM2[num] = v; + drv_CF_send(17, 4, PWM2); + break; + case 3: + PWM3[0] = num + 1; + PWM3[1] = v; + drv_CF_send(34, 2, PWM3); + break; + } + + return v; +} + + +static int drv_CF_autodetect(void) +{ + int m; + + /* only autodetect newer displays */ + if (Protocol < 2) + return -1; + + /* read display type */ + drv_CF_send(1, 0, NULL); + + /* send() did already wait for response packet */ + if (Packet.type == 0x01 && Packet.code == 0x01) { + char t[7], c; + float h, v; + info("%s: display identifies itself as '%s'", Name, Packet.data); + if (sscanf((char *) Packet.data, "%6s:h%f,%c%f", t, &h, &c, &v) != 4) { + error("%s: error parsing display identification string", Name); + return -1; + } + info("%s: display type '%s', hardware version %3.1f, firmware version %c%3.1f", Name, t, h, c, v); + if (strncmp(t, "CFA", 3) == 0) { + for (m = 0; Models[m].type != -1; m++) { + /* omit the 'CFA' */ + if (strcasecmp(Models[m].name, t + 3) == 0) + return m; + } + } + error("%s: display type '%s' may be not supported!", Name, t); + return -1; + } + + error("%s: display detection failed!", Name); + + return -1; +} + + +static char *drv_CF_print_ROM(void) +{ + static char buffer[17]; + + snprintf(buffer, sizeof(buffer), "0x%02x%02x%02x%02x%02x%02x%02x%02x", + Packet.data[1], Packet.data[2], Packet.data[3], Packet.data[4], Packet.data[5], Packet.data[6], + Packet.data[7], Packet.data[8]); + + return buffer; +} + + +static int drv_CF_scan_DOW(unsigned char index) +{ + int i; + + /* Read DOW Device Information */ + drv_CF_send(18, 1, &index); + + i = 0; + while (1) { + /* wait 10 msec */ + usleep(10 * 1000); + /* packet available? */ + if (drv_CF_poll()) { + /* DOW Device Info */ + if (Packet.type == 0x01 && Packet.code == 0x12) { + switch (Packet.data[1]) { + case 0x00: + /* no device found */ + return 0; + case 0x22: + info("%s: 1-Wire device #%d: DS1822 temperature sensor found at %s", Name, Packet.data[0], + drv_CF_print_ROM()); + return 1; + case 0x28: + info("%s: 1-Wire device #%d: DS18B20 temperature sensor found at %s", Name, Packet.data[0], + drv_CF_print_ROM()); + return 1; + default: + info("%s: 1-Wire device #%d: unknown device found at %s", Name, Packet.data[0], drv_CF_print_ROM()); + return 0; + } + } else { + drv_CF_process_packet(); + } + } + /* wait no longer than 300 msec */ + if (++i > 30) { + error("%s: 1-Wire device #%d detection timed out", Name, index); + return -1; + } + } + + /* not reached */ + return -1; +} + + +/* clear display */ +static void drv_CF_clear(void) +{ + switch (Protocol) { + case 1: + drv_generic_serial_write("\014", 1); + break; + case 2: + case 3: + drv_CF_send(6, 0, NULL); + break; + } +} + + +/* init sequences for 626, 632, 634, 636 */ +static void drv_CF_start_1(void) +{ + drv_generic_serial_write("\014", 1); /* Form Feed (Clear Display) */ + drv_generic_serial_write("\004", 1); /* hide cursor */ + drv_generic_serial_write("\024", 1); /* scroll off */ + drv_generic_serial_write("\030", 1); /* wrap off */ +} + + +/* init sequences for 633 */ +static void drv_CF_start_2(void) +{ + int i; + unsigned long mask; + unsigned char buffer[4]; + + /* Clear Display */ + drv_CF_send(6, 0, NULL); + + /* Set LCD Cursor Style */ + buffer[0] = 0; + drv_CF_send(12, 1, buffer); + + /* enable Fan Reporting */ + buffer[0] = 15; + drv_CF_send(16, 1, buffer); + + /* Set Fan Power to 100% */ + buffer[0] = buffer[1] = buffer[2] = buffer[3] = 100; + drv_CF_send(17, 4, buffer); + + /* Read DOW Device Information */ + mask = 0; + for (i = 0; i < 32; i++) { + if (drv_CF_scan_DOW(i) == 1) { + mask |= 1 << i; + } + } + + /* enable Temperature Reporting */ + buffer[0] = mask & 0xff; + buffer[1] = (mask >> 8) & 0xff; + buffer[2] = (mask >> 16) & 0xff; + buffer[3] = (mask >> 24) & 0xff; + drv_CF_send(19, 4, buffer); +} + + +/* init sequences for 631 */ +static void drv_CF_start_3(void) +{ + unsigned char buffer[1]; + + /* Clear Display */ + drv_CF_send(6, 0, NULL); + + /* Set LCD Cursor Style */ + buffer[0] = 0; + drv_CF_send(12, 1, buffer); + +} + + +static int drv_CF_start(const char *section) +{ + int i; + char *model; + + model = cfg_get(section, "Model", NULL); + if (model != NULL && *model != '\0') { + for (i = 0; Models[i].type != -1; i++) { + if (strcasecmp(Models[i].name, model) == 0) + break; + } + if (Models[i].type == -1) { + error("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source()); + return -1; + } + Model = i; + Protocol = Models[Model].protocol; + info("%s: using model '%s'", Name, Models[Model].name); + } else { + Model = -1; + Protocol = 2; /*auto-detect only newer displays */ + info("%s: no '%s.Model' entry from %s, auto-detecting", Name, section, cfg_source()); + } + + /* open serial port */ + if (drv_generic_serial_open(section, Name, 0) < 0) + return -1; + + /* Fixme: why such a large delay? */ + usleep(350 * 1000); + + /* display autodetection */ + i = drv_CF_autodetect(); + if (Model == -1) + Model = i; + if (Model == -1) { + error("%s: auto-detection failed, please specify a '%s.Model' entry in %s", Name, section, cfg_source()); + return -1; + } + if (i != -1 && Model != i) { + error("%s: %s.Model '%s' from %s does not match detected model '%s'", Name, section, model, cfg_source(), + Models[i].name); + return -1; + } + + /* initialize global variables */ + DROWS = Models[Model].rows; + DCOLS = Models[Model].cols; + GPIS = Models[Model].gpis; + GPOS = Models[Model].gpos; + Protocol = Models[Model].protocol; + Payload = Models[Model].payload; + + + switch (Protocol) { + + case 1: + drv_CF_start_1(); + break; + + case 2: + /* regularly process display answers */ + /* Fixme: make 100msec configurable */ + timer_add(drv_CF_timer, NULL, 100, 0); + drv_CF_start_2(); + /* clear 633 linebuffer */ + memset(Line, ' ', sizeof(Line)); + break; + + case 3: + /* regularly process display answers */ + /* Fixme: make 100msec configurable */ + timer_add(drv_CF_timer, NULL, 100, 0); + drv_CF_start_3(); + break; + } + + /* set contrast */ + if (cfg_number(section, "Contrast", 0, 0, 255, &i) > 0) { + drv_CF_contrast(i); + } + + /* set backlight */ + if (cfg_number(section, "Backlight", 0, 0, 100, &i) > 0) { + drv_CF_backlight(i); + } + + return 0; +} + + +/****************************************/ +/*** plugins ***/ +/****************************************/ + + +static void plugin_contrast(RESULT * result, const int argc, RESULT * argv[]) +{ + double contrast; + + switch (argc) { + case 0: + contrast = drv_CF_contrast(-1); + SetResult(&result, R_NUMBER, &contrast); + break; + case 1: + contrast = drv_CF_contrast(R2N(argv[0])); + SetResult(&result, R_NUMBER, &contrast); + break; + default: + error("%s.contrast(): wrong number of parameters", Name); + SetResult(&result, R_STRING, ""); + } +} + + +static void plugin_backlight(RESULT * result, const int argc, RESULT * argv[]) +{ + double backlight; + + switch (argc) { + case 0: + backlight = drv_CF_backlight(-1); + SetResult(&result, R_NUMBER, &backlight); + break; + case 1: + backlight = drv_CF_backlight(R2N(argv[0])); + SetResult(&result, R_NUMBER, &backlight); + break; + default: + error("%s.backlight(): wrong number of parameters", Name); + SetResult(&result, R_STRING, ""); + } +} + + +/* Fixme: other plugins for Fans, Temperature sensors, ... */ + + + +/****************************************/ +/*** widget callbacks ***/ +/****************************************/ + +/* using drv_generic_text_draw(W) */ +/* using drv_generic_text_icon_draw(W) */ +/* using drv_generic_text_bar_draw(W) */ +/* using drv_generic_gpio_draw(W) */ +/* using drv_generic_keypad_draw(W) */ + + +/****************************************/ +/*** exported functions ***/ +/****************************************/ + + +/* list models */ +int drv_CF_list(void) +{ + int i; + + for (i = 0; Models[i].type != -1; i++) { + printf("%s ", Models[i].name); + } + return 0; +} + + +/* initialize driver & display */ +int drv_CF_init(const char *section, const int quiet) +{ + WIDGET_CLASS wc; + int ret; + + info("%s: %s", Name, "$Rev: 906 $"); + + /* start display */ + if ((ret = drv_CF_start(section)) != 0) { + return ret; + } + + /* display preferences */ + XRES = 6; /* pixel width of one char */ + YRES = 8; /* pixel height of one char */ + CHARS = 8; /* number of user-defineable characters */ + + /* real worker functions */ + switch (Protocol) { + case 1: + CHAR0 = 128; /* ASCII of first user-defineable char */ + GOTO_COST = 3; /* number of bytes a goto command requires */ + drv_generic_text_real_write = drv_CF_write1; + drv_generic_text_real_defchar = drv_CF_defchar1; + break; + case 2: + CHAR0 = 0; /* ASCII of first user-defineable char */ + GOTO_COST = -1; /* there is no goto on 633 */ + drv_generic_text_real_write = drv_CF_write2; + drv_generic_text_real_defchar = drv_CF_defchar23; + drv_generic_gpio_real_get = drv_CF_GPI; + drv_generic_gpio_real_set = drv_CF_GPO; + break; + case 3: + CHAR0 = 0; /* ASCII of first user-defineable char */ + GOTO_COST = 3; /* number of bytes a goto command requires */ + drv_generic_text_real_write = drv_CF_write3; + drv_generic_text_real_defchar = drv_CF_defchar23; + drv_generic_gpio_real_get = drv_CF_GPI; + drv_generic_gpio_real_set = drv_CF_GPO; + drv_generic_keypad_real_press = drv_CF_keypad; + break; + } + + if (!quiet) { + char buffer[40]; + qprintf(buffer, sizeof(buffer), "%s %s", Name, Models[Model].name); + if (drv_generic_text_greet(buffer, "www.crystalfontz.com")) { + sleep(3); + drv_CF_clear(); + } + } + + /* initialize generic text driver */ + if ((ret = drv_generic_text_init(section, Name)) != 0) + return ret; + + /* initialize generic icon driver */ + if ((ret = drv_generic_text_icon_init()) != 0) + return ret; + + /* initialize generic bar driver */ + if ((ret = drv_generic_text_bar_init(0)) != 0) + return ret; + + /* add fixed chars to the bar driver */ + drv_generic_text_bar_add_segment(0, 0, 255, 32); /* ASCII 32 = blank */ + if (Protocol == 2) + drv_generic_text_bar_add_segment(255, 255, 255, 255); /* ASCII 255 = block */ + + /* initialize generic GPIO driver */ + if ((ret = drv_generic_gpio_init(section, Name)) != 0) + return ret; + + /* initialize generic key pad driver */ + if ((ret = drv_generic_keypad_init(section, Name)) != 0) + return ret; + + /* register text widget */ + wc = Widget_Text; + wc.draw = drv_generic_text_draw; + widget_register(&wc); + + /* register icon widget */ + wc = Widget_Icon; + wc.draw = drv_generic_text_icon_draw; + widget_register(&wc); + + /* register bar widget */ + wc = Widget_Bar; + wc.draw = drv_generic_text_bar_draw; + widget_register(&wc); + + /* register plugins */ + AddFunction("LCD::contrast", -1, plugin_contrast); + AddFunction("LCD::backlight", -1, plugin_backlight); + + return 0; +} + + +/* close driver & display */ +int drv_CF_quit(const int quiet) +{ + + info("%s: shutting down display.", Name); + + drv_generic_text_quit(); + drv_generic_gpio_quit(); + drv_generic_keypad_quit(); + + /* clear display */ + drv_CF_clear(); + + /* say goodbye... */ + if (!quiet) { + drv_generic_text_greet("goodbye!", NULL); + } + + drv_generic_serial_close(); + + return (0); +} + + +DRIVER drv_Crystalfontz = { + .name = Name, + .list = drv_CF_list, + .init = drv_CF_init, + .quit = drv_CF_quit, +}; |