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-rw-r--r--Cwlinux.c190
1 files changed, 102 insertions, 88 deletions
diff --git a/Cwlinux.c b/Cwlinux.c
index 07cbda4..6cbb51a 100644
--- a/Cwlinux.c
+++ b/Cwlinux.c
@@ -1,4 +1,4 @@
-/* $Id: Cwlinux.c,v 1.3 2002/09/12 05:24:54 reinelt Exp $
+/* $Id: Cwlinux.c,v 1.4 2003/02/22 07:23:24 reinelt Exp $
*
* driver for Cwlinux serial display modules
*
@@ -20,6 +20,9 @@
*
*
* $Log: Cwlinux.c,v $
+ * Revision 1.4 2003/02/22 07:23:24 reinelt
+ * Cwlinux fixes
+ *
* Revision 1.3 2002/09/12 05:24:54 reinelt
* code cleanup, character defining for bars
*
@@ -57,27 +60,7 @@
#define YRES 8
#define CHARS 7
-#define LCD_CMD 254
-#define LCD_CMD_END 253
-#define LCD_INIT_CHINESE_T 56
-#define LCD_INIT_CHINESE_S 55
-#define LCD_LIGHT_ON 66
-#define LCD_LIGHT_OFF 70
-#define LCD_CLEAR 88
-#define LCD_SET_INSERT 71
-#define LCD_INIT_INSERT 72
-#define LCD_SET_BAUD 57
-#define LCD_ENABLE_WRAP 67
-#define LCD_DISABLE_WRAP 68
-#define LCD_SETCHAR 78
-#define LCD_ENABLE_CURSOR 81
-#define LCD_DISABLE_CURSOR 82
-
-#define LCD_LENGTH 20
-
-#define DELAY 20
-#define UPDATE_DELAY 0 /* 1 sec */
-#define SETUP_DELAY 0 /* 2 sec */
+#define DELAY 200
static LCD Lcd;
static char *Port = NULL;
@@ -86,7 +69,8 @@ static int Device = -1;
static char Txt[4][20];
-static int CwLnx_open(void)
+
+static int CW_open(void)
{
int fd;
pid_t pid;
@@ -99,6 +83,7 @@ static int CwLnx_open(void)
error("Cwlinux: port %s is locked by process %d", Port, pid);
return -1;
}
+
fd = open(Port, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd == -1) {
error("Cwlinux: open(%s) failed: %s", Port, strerror(errno));
@@ -111,16 +96,19 @@ static int CwLnx_open(void)
return -1;
}
cfmakeraw(&portset);
+ cfsetispeed(&portset, Speed);
cfsetospeed(&portset, Speed);
if (tcsetattr(fd, TCSANOW, &portset) == -1) {
error("Cwlinux: tcsetattr(%s) failed: %s", Port, strerror(errno));
unlock_port(Port);
return -1;
}
+
return fd;
}
-static void CwLnx_write(char *string, int len)
+
+static void CW_write(char *string, int len)
{
if (write (Device, string, len)==-1) {
if (errno==EAGAIN) {
@@ -129,32 +117,48 @@ static void CwLnx_write(char *string, int len)
}
error ("Cwlinux: write(%s) failed: %s", Port, strerror(errno));
}
+ usleep(DELAY);
+}
+
+
+static int CW_read(char *string, int len)
+{
+ int ret;
+
+ ret=read (Device, string, len);
+ if (ret<0 && errno==EAGAIN) {
+ usleep(1000);
+ ret=read (Device, string, len);
+ }
+ debug ("read(%s)=%d", string, ret);
+
+ if (ret<0) {
+ error("Cwlinux: read() failed: %s", strerror(errno));
+ }
- // Fixme: Why?
- // usleep(DELAY);
+ usleep(DELAY);
+
+ return ret;
}
-static void CwLnx_Goto(int row, int col)
+
+static void CW_Goto(int row, int col)
{
- char cmd[5];
+ char cmd[5]="\376Gxy\375";
- cmd[0]=LCD_CMD;
- cmd[1]=LCD_SET_INSERT;
cmd[2]=(char)col;
cmd[3]=(char)row;
- cmd[4]=LCD_CMD_END;
-
- CwLnx_write(cmd,5);
+ CW_write(cmd,5);
+ usleep(DELAY);
+
}
-static void CwLnx_define_char (int ascii, char *buffer)
+static void CW_define_char (int ascii, char *buffer)
{
- char cmd[10];
int i, j;
+ char cmd[10]="\376Nn123456\375";
- cmd[0]=LCD_CMD;
- cmd[1]=LCD_SETCHAR;
- cmd[2]=(char)ascii;
+ cmd[2]=(char)ascii+1;
// Cwlinux uses a vertical bitmap layout, so
// we have to kind of 'rotate' the bitmap.
@@ -163,19 +167,18 @@ static void CwLnx_define_char (int ascii, char *buffer)
cmd[3+i]=0;
for (j=0; j<8;j++) {
if (buffer[j] & (1<<(5-i))) {
- cmd[3+i]|=(1<<j);
+ cmd[3+i]|=(1<<(7-j));
}
}
}
- cmd[10]=LCD_CMD_END;
- CwLnx_write(cmd,10);
+ CW_write(cmd,10);
+ usleep(DELAY);
}
-int CwLnx_clear(void)
+int CW_clear(void)
{
- char cmd[3];
-
int row, col;
+
for (row = 0; row < Lcd.rows; row++) {
for (col = 0; col < Lcd.cols; col++) {
Txt[row][col] = '\t';
@@ -184,20 +187,18 @@ int CwLnx_clear(void)
bar_clear();
- cmd[0]=LCD_CMD;
- cmd[1]=LCD_CLEAR;
- cmd[2]=LCD_CMD_END;
- CwLnx_write(cmd,3);
-
+ CW_write("\376X\375",3);
+ usleep(1000);
+
return 0;
}
-int CwLnx_init(LCD * Self)
+int CW_init(LCD * Self)
{
char *port;
char *speed;
- char cmd[3];
-
+ char buffer[16];
+
Lcd = *Self;
if (Port) {
@@ -215,12 +216,6 @@ int CwLnx_init(LCD * Self)
speed = cfg_get("Speed") ? : "19200";
switch (atoi(speed)) {
- case 1200:
- Speed = B1200;
- break;
- case 2400:
- Speed = B2400;
- break;
case 9600:
Speed = B9600;
break;
@@ -234,33 +229,46 @@ int CwLnx_init(LCD * Self)
debug("using port %s at %d baud", Port, atoi(speed));
- Device = CwLnx_open();
+ Device = CW_open();
if (Device == -1)
return -1;
- bar_init(Lcd.rows, Lcd.cols, XRES, YRES, CHARS);
- bar_add_segment( 0, 0,255, 32); // ASCII 32 = blank
- bar_add_segment(255,255,255,255); // ASCII 255 = block
-
- CwLnx_clear();
+ // read firmware version
+ CW_read(buffer,sizeof(buffer));
+ CW_write ("\3761\375", 3);
+ if (CW_read(buffer,2)!=2) {
+ info ("unable to read firmware version!");
+ } else {
+ info ("Cwlinux Firmware %d.%d", (int)buffer[0], (int)buffer[1]);
+ }
+ info ("Cwlinux Firmware %d.%d", (int)buffer[0], (int)buffer[1]);
+
+ CW_clear();
- // turn backlight on
- cmd[0]=LCD_CMD;
- cmd[1]=LCD_LIGHT_ON;
- cmd[2]=LCD_CMD_END;
- CwLnx_write(cmd,3);
+ // auto line wrap off
+ CW_write ("\376D\375", 3);
+ usleep(DELAY);
- // Fixme:
- // enable (disable?) linewrap
- cmd[0]=LCD_CMD;
- cmd[1]=LCD_ENABLE_WRAP;
- cmd[2]=LCD_CMD_END;
- CwLnx_write(cmd,3);
+ // auto scroll off
+ CW_write ("\376R\375", 3);
+ usleep(DELAY);
+ // underline cursor off
+ CW_write ("\376K\375", 3);
+ usleep(DELAY);
+
+ // backlight on
+ CW_write ("\376B\375", 3);
+ usleep(DELAY);
+
+ bar_init(Lcd.rows, Lcd.cols, XRES, YRES, CHARS);
+ bar_add_segment( 0, 0,255, 32); // ASCII 32 = blank
+
return 0;
}
-int CwLnx_put(int row, int col, char *text)
+
+int CW_put(int row, int col, char *text)
{
char *p = &Txt[row][col];
char *t = text;
@@ -271,42 +279,47 @@ int CwLnx_put(int row, int col, char *text)
return 0;
}
-int CwLnx_bar(int type, int row, int col, int max, int len1, int len2)
+
+int CW_bar(int type, int row, int col, int max, int len1, int len2)
{
return bar_draw (type, row, col, max, len1, len2);
}
-int CwLnx_flush(void)
+
+int CW_flush(void)
{
char buffer[256];
char *p;
int c, row, col;
- bar_process(CwLnx_define_char);
+ bar_process(CW_define_char);
for (row = 0; row < Lcd.rows; row++) {
for (col = 0; col < Lcd.cols; col++) {
c=bar_peek(row, col);
if (c!=-1) {
+ if (c!=32) c++; //blank
Txt[row][col]=(char)c;
}
}
for (col = 0; col < Lcd.cols; col++) {
if (Txt[row][col] == '\t')
continue;
- CwLnx_Goto(row, col);
+ CW_Goto(row, col);
+ usleep(DELAY);
for (p = buffer; col < Lcd.cols; col++, p++) {
if (Txt[row][col] == '\t')
break;
*p = Txt[row][col];
}
- CwLnx_write(buffer, p - buffer);
+ CW_write(buffer, p - buffer);
}
}
return 0;
}
-int CwLnx_quit(void)
+
+int CW_quit(void)
{
debug("closing port %s", Port);
close(Device);
@@ -314,6 +327,7 @@ int CwLnx_quit(void)
return (0);
}
+
LCD Cwlinux[] = {
{name: "CW12232",
rows: 4,
@@ -322,13 +336,13 @@ LCD Cwlinux[] = {
yres: YRES,
bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2,
gpos: 0,
- init: CwLnx_init,
- clear: CwLnx_clear,
- put: CwLnx_put,
- bar: CwLnx_bar,
+ init: CW_init,
+ clear: CW_clear,
+ put: CW_put,
+ bar: CW_bar,
gpo: NULL,
- flush: CwLnx_flush,
- quit: CwLnx_quit
+ flush: CW_flush,
+ quit: CW_quit
},
{NULL}
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 10:52:10 +0000