lcd4linux.git - lcd4linux

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/* $Id$ * $URL$ * * driver for picoLCD Graphic(256x64) displays from mini-box.com * * Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at> * Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> * * Copyright (C) 2008 Nicu Pavel, Mini-Box.com <npavel@mini-box.com> * * 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_picoLCDGraphic * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <termios.h> #include <fcntl.h> #include <sys/ioctl.h> #include <sys/time.h> #include <usb.h> #include "debug.h" #include "cfg.h" #include "qprintf.h" #include "udelay.h" #include "plugin.h" #include "widget.h" #include "widget_text.h" #include "widget_icon.h" #include "widget_bar.h" #include "drv.h" #include "drv_generic_gpio.h" #include "drv_generic_keypad.h" #include "drv_generic_graphic.h" #define picoLCD_VENDOR 0x04d8 #define picoLCD_DEVICE 0xc002 #define OUT_REPORT_LED_STATE 0x81 #define OUT_REPORT_LCD_BACKLIGHT 0x91 #define OUT_REPORT_LCD_CONTRAST 0x92 #define OUT_REPORT_CMD 0x94 #define OUT_REPORT_DATA 0x95 #define OUT_REPORT_CMD_DATA 0x96 #define SCREEN_H 64 #define SCREEN_W 256 #if 1 #define DEBUG(x) debug("%s(): %s", __FUNCTION__, x); #else #define DEBUG(x) #endif static char Name[] = "picoLCDGraphic"; static unsigned char *pLG_framebuffer; /* used to display white text on black background or inverse */ unsigned char inverted = 0; static unsigned int gpo = 0; static char *Buffer; static char *BufPtr; static usb_dev_handle *lcd; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ static int drv_pLG_open(void) { struct usb_bus *busses, *bus; struct usb_device *dev; char driver[1024]; char product[1024]; char manufacturer[1024]; char serialnumber[1024]; int ret; lcd = NULL; info("%s: scanning for picoLCD 256x64...", Name); usb_set_debug(0); usb_init(); usb_find_busses(); usb_find_devices(); busses = usb_get_busses(); for (bus = busses; bus; bus = bus->next) { for (dev = bus->devices; dev; dev = dev->next) { if ((dev->descriptor.idVendor == picoLCD_VENDOR) && (dev->descriptor.idProduct == picoLCD_DEVICE)) { info("%s: found picoLCD on bus %s device %s", Name, bus->dirname, dev->filename); lcd = usb_open(dev); ret = usb_get_driver_np(lcd, 0, driver, sizeof(driver)); if (ret == 0) { info("%s: interface 0 already claimed by '%s'", Name, driver); info("%s: attempting to detach driver...", Name); if (usb_detach_kernel_driver_np(lcd, 0) < 0) { error("%s: usb_detach_kernel_driver_np() failed!", Name); return -1; } } usb_set_configuration(lcd, 1); usleep(100); if (usb_claim_interface(lcd, 0) < 0) { error("%s: usb_claim_interface() failed!", Name); return -1; } usb_set_altinterface(lcd, 0); usb_get_string_simple(lcd, dev->descriptor.iProduct, product, sizeof(product)); usb_get_string_simple(lcd, dev->descriptor.iManufacturer, manufacturer, sizeof(manufacturer)); usb_get_string_simple(lcd, dev->descriptor.iSerialNumber, serialnumber, sizeof(serialnumber)); info("%s: Manufacturer='%s' Product='%s' SerialNumber='%s'", Name, manufacturer, product, serialnumber); return 0; } } } error("%s: could not find a picoLCD", Name); return -1; } static void drv_pLG_send(unsigned char *data, int size) { int ret; ret = usb_interrupt_write(lcd, USB_ENDPOINT_OUT + 1, (char *) data, size, 1000); //fprintf(stderr, "%s written %d bytes\n", __FUNCTION__, ret); } static int drv_pLG_close(void) { usb_release_interface(lcd, 0); usb_close(lcd); return 0; } static void drv_pLG_update_img() { unsigned char cmd3[64] = { OUT_REPORT_CMD_DATA }; /* send command + data */ unsigned char cmd4[64] = { OUT_REPORT_DATA }; /* send data only */ int index, bit, x, y; unsigned char cs, line; unsigned char pixel; info("In %s\n", __FUNCTION__); for (cs = 0; cs < 4; cs++) { unsigned char chipsel = (cs << 2); //chipselect for (line = 0; line < 8; line++) { //ha64_1.setHIDPkt(OUT_REPORT_CMD_DATA, 8+3+32, 8, chipsel, 0x02, 0x00, 0x00, 0xb8|j, 0x00, 0x00, 0x40); cmd3[0] = OUT_REPORT_CMD_DATA; cmd3[1] = chipsel; cmd3[2] = 0x02; cmd3[3] = 0x00; cmd3[4] = 0x00; cmd3[5] = 0xb8 | line; cmd3[6] = 0x00; cmd3[7] = 0x00; cmd3[8] = 0x40; cmd3[9] = 0x00; cmd3[10] = 0x00; cmd3[11] = 32; //ha64_2.setHIDPkt(OUT_REPORT_DATA, 4+32, 4, chipsel | 0x01, 0x00, 0x00, 32); cmd4[0] = OUT_REPORT_DATA; cmd4[1] = chipsel | 0x01; cmd4[2] = 0x00; cmd4[3] = 0x00; cmd4[4] = 32; for (index = 0; index < 32; index++) { pixel = 0x00; for (bit = 0; bit < 8; bit++) { x = cs * 64 + index; y = (line * 8 + bit + 0) % SCREEN_H; if (pLG_framebuffer[y * 256 + x] ^ inverted) pixel |= (1 << bit); } cmd3[12 + index] = pixel; } for (index = 32; index < 64; index++) { pixel = 0x00; for (bit = 0; bit < 8; bit++) { x = cs * 64 + index; y = (line * 8 + bit + 0) % SCREEN_H; if (pLG_framebuffer[y * 256 + x] ^ inverted) pixel |= (1 << bit); } cmd4[5 + (index - 32)] = pixel; } drv_pLG_send(cmd3, 44); drv_pLG_send(cmd4, 38); } } //drv_pLG_clear(); } /* for graphic displays only */ static void drv_pLG_blit(const int row, const int col, const int height, const int width) { int r, c; //DEBUG(fprintf(stderr, "In %s called with row %d col %d height %d width %d\n", __FUNCTION__, row, col, height, width)); for (r = row; r < row + height; r++) { for (c = col; c < col + width; c++) { pLG_framebuffer[r * 256 + c] = drv_generic_graphic_black(r, c); //fprintf(stderr, "%d", pLG_framebuffer[r * 256 + c]); } //fprintf(stderr, "\n"); } /* for (r = 0; r < 64; r++) { for(c = 0; c < 256; c++) { fprintf(stderr, "%d", pLG_framebuffer[r * 256 + c]); } fprintf(stderr, "\n"); } */ drv_pLG_update_img(); } void drv_pLG_clear(void) { unsigned char cmd[3] = { 0x93, 0x01, 0x00 }; /* init display */ unsigned char cmd2[9] = { OUT_REPORT_CMD }; /* init display */ unsigned char cmd3[64] = { OUT_REPORT_CMD_DATA }; /* clear screen */ unsigned char cmd4[64] = { OUT_REPORT_CMD_DATA }; /* clear screen */ int init, index; unsigned char cs, line; info("In %s\n", __FUNCTION__); drv_pLG_send(cmd, 3); for (init = 0; init < 4; init++) { unsigned char cs = ((init << 2) & 0xFF); cmd2[0] = OUT_REPORT_CMD; cmd2[1] = cs; cmd2[2] = 0x02; cmd2[3] = 0x00; cmd2[4] = 0x64; cmd2[5] = 0x3F; cmd2[6] = 0x00; cmd2[7] = 0x64; cmd2[8] = 0xC0; drv_pLG_send(cmd2, 9); } for (cs = 0; cs < 4; cs++) { unsigned char chipsel = (cs << 2); //chipselect for (line = 0; line < 8; line++) { //ha64_1.setHIDPkt(OUT_REPORT_CMD_DATA, 8+3+32, 8, cs, 0x02, 0x00, 0x00, 0xb8|j, 0x00, 0x00, 0x40); cmd3[0] = OUT_REPORT_CMD_DATA; cmd3[1] = chipsel; cmd3[2] = 0x02; cmd3[3] = 0x00; cmd3[4] = 0x00; cmd3[5] = 0xb8 | line; cmd3[6] = 0x00; cmd3[7] = 0x00; cmd3[8] = 0x40; cmd3[9] = 0x00; cmd3[10] = 0x00; cmd3[11] = 32; unsigned char temp = 0; for (index = 0; index < 32; index++) { cmd3[12 + index] = temp; } drv_pLG_send(cmd3, 64); //ha64_2.setHIDPkt(OUT_REPORT_DATA, 4+32, 4, cs | 0x01, 0x00, 0x00, 32); cmd4[0] = OUT_REPORT_DATA; cmd4[1] = chipsel | 0x01; cmd4[2] = 0x00; cmd4[3] = 0x00; cmd4[4] = 32; for (index = 32; index < 64; index++) { temp = 0x00; cmd4[5 + (index - 32)] = temp; } drv_pLG_send(cmd4, 64); } } } static int drv_pLG_contrast(int contrast) { unsigned char cmd[2] = { 0x92 }; /* set contrast */ if (contrast < 0) contrast = 0; if (contrast > 255) contrast = 255; cmd[1] = contrast; drv_pLG_send(cmd, 2); return contrast; } static int drv_pLG_backlight(int backlight) { unsigned char cmd[2] = { 0x91 }; /* set backlight */ if (backlight < 0) backlight = 0; if (backlight >= 1) backlight = 200; cmd[1] = backlight; drv_pLG_send(cmd, 2); return backlight; } static int drv_pLG_gpo(int num, int val) { unsigned char cmd[2] = { 0x81 }; /* set GPO */ if (num < 0) num = 0; if (num > 7) num = 7; if (val < 0) val = 0; if (val > 1) val = 1; /* set led bit to 1 or 0 */ if (val) gpo |= 1 << num; else gpo &= ~(1 << num); cmd[1] = gpo; //drv_pLG_send(cmd, 2); return val; } static int drv_pLG_start(const char *section, const int quiet) { int rows = -1, cols = -1; int value; char *s; s = cfg_get(section, "Size", NULL); if (s == NULL || *s == '\0') { error("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); return -1; } if (sscanf(s, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) { error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } if (cfg_number(section, "Inverted", 0, 0, 1, &value) > 0) { info("Setting display inverted to %d", value); inverted = value; } DROWS = SCREEN_H; DCOLS = SCREEN_W; if (drv_pLG_open() < 0) { return -1; } /* Init the command buffer */ Buffer = (char *) malloc(1024); if (Buffer == NULL) { error("%s: coommand buffer could not be allocated: malloc() failed", Name); return -1; } BufPtr = Buffer; /* Init framebuffer buffer */ pLG_framebuffer = malloc(SCREEN_W * SCREEN_H * sizeof(unsigned char)); if (!pLG_framebuffer) return -1; DEBUG("allocated"); memset(pLG_framebuffer, 0, SCREEN_W * SCREEN_H); DEBUG("zeroed"); if (cfg_number(section, "Contrast", 0, 0, 255, &value) > 0) { info("Setting contrast to %d", value); drv_pLG_contrast(value); } if (cfg_number(section, "Backlight", 0, 0, 1, &value) > 0) { info("Setting backlight to %d", value); drv_pLG_backlight(value); } drv_pLG_clear(); /* clear display */ if (!quiet) { char buffer[40]; qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, SCREEN_W, SCREEN_H); if (drv_generic_graphic_greet(buffer, "http://www.picolcd.com")) { sleep(3); drv_pLG_clear(); } } return 0; } /****************************************/ /*** plugins ***/ /****************************************/ static void plugin_contrast(RESULT * result, RESULT * arg1) { double contrast; contrast = drv_pLG_contrast(R2N(arg1)); SetResult(&result, R_NUMBER, &contrast); } static void plugin_backlight(RESULT * result, RESULT * arg1) { double backlight; backlight = drv_pLG_backlight(R2N(arg1)); SetResult(&result, R_NUMBER, &backlight); } static void plugin_gpo(RESULT * result, RESULT * argv[]) { double gpo; gpo = drv_pLG_gpo(R2N(argv[0]), R2N(argv[1])); SetResult(&result, R_NUMBER, &gpo); } /****************************************/ /*** widget callbacks ***/ /****************************************/ /* using drv_generic_text_draw(W) */ /* using drv_generic_text_icon_draw(W) */ /* using drv_generic_text_bar_draw(W) */ /****************************************/ /*** exported functions ***/ /****************************************/ /* list models */ int drv_pLG_list(void) { printf("picoLCD 256x64 Graphic LCD"); return 0; } /* initialize driver & display */ int drv_pLG_init(const char *section, const int quiet) { int ret; info("%s: %s", Name, "$Rev$"); info("PICOLCD Graphic initialization\n"); /* display preferences */ XRES = 6; /* pixel width of one char */ YRES = 8; /* pixel height of one char */ GPOS = 8; /* real worker functions */ drv_generic_graphic_real_blit = drv_pLG_blit; /* start display */ if ((ret = drv_pLG_start(section, quiet)) != 0) return ret; /* initialize generic graphic driver */ if ((ret = drv_generic_graphic_init(section, Name)) != 0) return ret; /* GPO's init */ if ((ret = drv_generic_gpio_init(section, Name)) != 0) return ret; /* register plugins */ AddFunction("LCD::contrast", -1, plugin_contrast); AddFunction("LCD::backlight", -1, plugin_backlight); AddFunction("LCD::gpo", -1, plugin_gpo); return 0; } /* close driver & display */ int drv_pLG_quit(const int quiet) { info("%s: shutting down.", Name); drv_generic_graphic_quit(); /* clear display */ drv_pLG_clear(); /* say goodbye... */ if (!quiet) { drv_generic_graphic_greet("goodbye!", NULL); } drv_pLG_close(); if (Buffer) { free(Buffer); BufPtr = NULL; } return (0); } DRIVER drv_picoLCDGraphic = { .name = Name, .list = drv_pLG_list, .init = drv_pLG_init, .quit = drv_pLG_quit, };


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