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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/* RA6963 Driver
* Pinout:
* Version 1:
* 1 - Vee Negative Voltage Output
* 2 - GND GND
* 3 - +5V
* 4 - Vo LCD Driver Supply (10-20k Pot between +5V and Vee)
* 5 - /WR Write (Low active)
* 6 - /RD Read (Low active)
* 7 - /CE Chip Enable (Low active)
* 8 - C/D Command or Data
* 9 - /RST Reset (Low active)
* 10..17 - D0..7
* 18 - FS Font Select
* 19 - A Backlight Anode (~4.3V)
* 20 - K Backlight Cathode (GND)
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
// My Settings
#define RA6963_NEED_READ GFXOFF //works, but is very slow!
#define RA6963_HAS_RESET GFXOFF
#define RA6963_NEED_FONT_SELECT GFXOFF
#define RA6963_NEED_BACKLIGHT GFXOFF
#define RA6963_NEED_PWMBACKLIGHT GFXOFF
#define GDISP_SCREEN_HEIGHT 64
#define GDISP_SCREEN_WIDTH 128
#define GDISP_INITIAL_CONTRAST 50
#define GDISP_INITIAL_BACKLIGHT 100
#define RA6963_delay(n) {asm("nop");asm("nop");asm("nop");asm("nop");}
#define LINE_WR PAL_LINE(GPIOB, 8U)
#if RA6963_NEED_READ
#define LINE_RD PAL_LINE(GPIOB, 9U)
#endif
#define LINE_CE PAL_LINE(GPIOB, 10U)
#define LINE_CD PAL_LINE(GPIOB, 11U)
#if RA6963_HAS_RESET
#define LINE_RST PAL_LINE(GPIOB, 12U)
#endif
#define LINE_D0 PAL_LINE(GPIOB, 0U)
#define LINE_D1 PAL_LINE(GPIOB, 1U)
#define LINE_D2 PAL_LINE(GPIOB, 2U)
#define LINE_D3 PAL_LINE(GPIOB, 3U)
#define LINE_D4 PAL_LINE(GPIOB, 4U)
#define LINE_D5 PAL_LINE(GPIOB, 5U)
#define LINE_D6 PAL_LINE(GPIOB, 6U)
#define LINE_D7 PAL_LINE(GPIOB, 7U)
#if RA6963_NEED_FONT_SELECT
#define LINE_FS PAL_LINE(GPIOA, 13U)
#endif
#if RA6963_NEED_BACKLIGHT
#define LINE_BL PAL_LINE(GPIOA, 14U)
#endif
typedef struct {
ioline_t WR; //Write PIN
#if RA6963_NEED_READ
ioline_t RD; //Read PIN (tie to +5V if not needed)
#endif
ioline_t CE; //Chip Enable PIN
ioline_t CD; //Command/Data Select PIN
#if RA6963_HAS_RESET
ioline_t RST; //Reset PIN (tie to +5V if not needed)
#endif
ioline_t D[8]; //Data PINs
#if RA6963_NEED_BACKLIGHT
ioline_t BL; //Backlight PIN
#endif
#if RA6963_NEED_FONT_SELECT
ioline_t FS; //Font Select PIN (tie to GND if not needed)
#endif
} lcd_pins_t;
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
static const lcd_pins_t lcdpins = {
LINE_WR,
#if RA6963_NEED_READ
LINE_RD,
#endif
LINE_CE,
LINE_CD,
#if RA6963_HAS_RESET
LINE_RST,
#endif
{
LINE_D0,
LINE_D1,
LINE_D2,
LINE_D3,
LINE_D4,
LINE_D5,
LINE_D6,
LINE_D7
},
#if RA6963_NEED_BACKLIGHT
LINE_BL,
#endif
#if RA6963_NEED_FONT_SELECT
LINE_FS,
#endif
};
static GFXINLINE void init_board(GDisplay* g){
(void) g;
g->board = 0;
int ii;
//################################DEBUG#######################################
#define DEB13_ON palClearLine(PAL_LINE(GPIOB, 13U))
#define DEB13_OFF palSetLine(PAL_LINE(GPIOB, 13U))
#define DEB14_ON palClearLine(PAL_LINE(GPIOB, 14U))
#define DEB14_OFF palSetLine(PAL_LINE(GPIOB, 14U))
palSetLineMode(PAL_LINE(GPIOB, 13U), PAL_MODE_OUTPUT_PUSHPULL);
DEB13_OFF;
palSetLineMode(PAL_LINE(GPIOB, 14U), PAL_MODE_OUTPUT_PUSHPULL);
DEB14_OFF;
//################################DEBUG#######################################
palSetLineMode(lcdpins.WR, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.WR);
#if RA6963_NEED_READ
palSetLineMode(lcdpins.RD, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.RD);
#endif
palSetLineMode(lcdpins.CE, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.CE);
palSetLineMode(lcdpins.CD, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.CD);
#if RA6963_HAS_RESET
palSetLine(lcdpins.RST);
palSetLineMode(lcdpins.RST, PAL_MODE_OUTPUT_PUSHPULL);
#endif
for(ii = 0; ii < 8; ii++) {
palSetLineMode(lcdpins.D[ii], PAL_MODE_OUTPUT_PUSHPULL);
palClearLine(lcdpins.D[ii]);
}
#if RA6963_NEED_BACKLIGHT
#if RA6963_NEED_PWMBACKLIGHT
palSetLineMode(lcdpins.BL, PAL_MODE_ALTERNATE(1));
#else
palSetLineMode(lcdpins.BL, PAL_MODE_OUTPUT_PUSHPULL);
#endif
#endif
#if RA6963_NEED_FONT_SELECT
palSetLineMode(lcdpins.FS, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.FS);
#endif
}
static GFXINLINE void post_init_board(GDisplay *g) {
(void) g;
}
static GFXINLINE void setpin_reset(GDisplay *g, gBool state) {
(void) g;
#if RA6963_HAS_RESET //Make Hardware Reset
if (state)
palClearLine(lcdpins.RST);
else
palSetLine(lcdpins.RST);
#else
(void) state;
#endif
}
static GFXINLINE void set_backlight(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
#if RA6963_NEED_BACKLIGHT
#if RA6963_NEED_PWMBACKLIGHT
#else
#endif
#endif
}
static GFXINLINE void acquire_bus(GDisplay *g) {
(void) g;
}
static GFXINLINE void release_bus(GDisplay *g) {
(void) g;
}
#if RA6963_NEED_READ
static GFXINLINE uint8_t RA6963_busy_wait(uint8_t pattern, gBool lh){
uint8_t data;
int ii;
for(ii = 0; ii < 2; ii++) //Only interested in Bit 0 and 1
palSetLineMode(lcdpins.D[ii], PAL_MODE_INPUT); //Set pads to input
palClearLine(lcdpins.CE);
palClearLine(lcdpins.RD);
do{
data = 0;
for(ii = 0; ii < 2; ii++){
if (palReadLine(lcdpins.D[ii]) == PAL_HIGH){ //Read output
data |= (1<<ii);
}
}
} while ((data & pattern) == lh);
palSetLine(lcdpins.CE);
palSetLine(lcdpins.RD);
for(ii = 0; ii < 2; ii++) {
palSetLineMode(lcdpins.D[ii], PAL_MODE_OUTPUT_PUSHPULL); //Set pads to output
}
return data;
}
#endif
static GFXINLINE void RA6963_write(uint8_t value){
int ii;
for(ii = 0; ii < 8; ii++){
if(value & (1 << ii))
palSetLine(lcdpins.D[ii]);
else
palClearLine(lcdpins.D[ii]);
}
}
static GFXINLINE void write_data(GDisplay* g, uint8_t data){
(void)g;
#if RA6963_NEED_READ
RA6963_busy_wait(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2, ~(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2));
#endif
RA6963_write(data);
palClearLine(lcdpins.CD);
palClearLine(lcdpins.CE);
palClearLine(lcdpins.WR);
RA6963_delay(1);
palSetLine(lcdpins.WR);
palSetLine(lcdpins.CE);
palSetLine(lcdpins.CD);
}
static GFXINLINE void write_cmd(GDisplay* g, uint8_t data){
(void)g;
#if RA6963_NEED_READ
RA6963_busy_wait(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2, ~(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2));
#endif
RA6963_write(data);
palClearLine(lcdpins.CE);
palClearLine(lcdpins.WR);
RA6963_delay(1);
palSetLine(lcdpins.WR);
palSetLine(lcdpins.CE);
}
static GFXINLINE void setreadmode(GDisplay *g) {
(void) g;
}
static GFXINLINE void setwritemode(GDisplay *g) {
(void) g;
}
static GFXINLINE uint8_t read_data(GDisplay *g) {
(void) g;
#if RA6963_NEED_READ
int ii;
uint8_t data;
write_cmd(g, RA6963_DATA_READ_AND_NONVARIABLE);
//RA6963_busy_wait(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2, ~(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2));
for(ii = 0; ii < 8; ii++)
palSetLineMode(lcdpins.D[ii], PAL_MODE_INPUT); //Set pads to input
palClearLine(lcdpins.CE);
palClearLine(lcdpins.RD);
do{
data = 0;
for(ii = 0; ii < 2; ii++){
if (palReadLine(lcdpins.D[ii]) == PAL_HIGH){ //Read output
data |= (1<<ii);
}
}
} while ((data & (RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2)) == ~(RA6963_STATUS_BUSY1 | RA6963_STATUS_BUSY2));
palClearLine(lcdpins.CD);
// RA6963_delay(1);
data = 0;
for(ii = 0; ii < 8; ii++){
if (palReadLine(lcdpins.D[ii]) == PAL_HIGH){ //Read output
data |= (1<<ii);
}
}
palSetLine(lcdpins.CE);
palSetLine(lcdpins.RD);
palSetLine(lcdpins.CD);
for(ii = 0; ii < 8; ii++) {
palSetLineMode(lcdpins.D[ii], PAL_MODE_OUTPUT_PUSHPULL); //Set pads to output
}
return data;
#else
return 0;
#endif
}
#endif /* _GDISP_LLD_BOARD_H */
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