--- /dev/null
+/* $Id: drv_picoLCDGraphic.c 840 2007-09-09 12:17:42Z michael $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_picoLCDGraphic.c $
+ *
+ * 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;
+extern int usb_debug;
+
+
+
+/****************************************/
+/*** 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_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: 840 $");
+
+ 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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