Cypress S6J3200 Series, Manual

Page: 1083 / 1355

CHAPTER 28:LCD Controller
1082 S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
8.
Sample Program
This section shows sample program.
Setting procedure 1 Program 1
With the 1/2 duty drive method, make the LCD display a four-digit
number, "0 1 2 3".
void LCD_sample_1(void)
{
Initial setting (LCDC) LCDC_initial();
}
<Initial setting> void LCDC_initial(void)
1. - Port Register name {
COM, SEG output setting for
the port See 6.8. and 6.9.
PORT_SETTING_LCDC_OUT();
/* Set the LCD controller pin to */
/* peripheral output. */
2. - Setting of VRAM Register name
Setting of VRAM VRAM00-VRAM07 IO_VRAM00 = 0x31;
IO_VRAM01 = 0x32;
IO_VRAM02 = 0x00;
IO_VRAM03 = 0x22;
IO_VRAM04 = 0x32;
IO_VRAM05 = 0x30;
IO_VRAM06 = 0x22;
IO_VRAM07 = 0x32;
3. - Setting of control register Register name
Fixed value LCR1 IO_LCR1.byte = 0xFF; /* Set to FF. */
Bias setting LCDCMR IO_LCDCMR. byte = 0x0F; /* 1/2 bias */
Setting of control register LCR0 IO_LCR0.byte = 0x04; /* Setting value =0000_0100 */
/* bit7 = 0 Clock selection Main clock */
. LCEN /* bit6 = 0 LCEN Display stopped with PSS mode */
. VSEL
/* bit5 = 0 VSEL Internal division resistor disconnected
*/
. BK /* bit4 = 0 BK Blanking selection bit */
. MS[1:0] /* bit3-2 = 01 MS[1:0] 1/2 duty mode */
. FP[1:0] /* bit1-0 = 00 FP[1:0] */
}
<Others>
(Note)
Clock-related setting and setting of _set_il (numerical value)
in advance are required. See chapter of "CLOCK SYSTEM"
and chapter of "INTERRUPT CONTROLLER" for details.