Emmanuel BENOîT
299adc5db9
* Moved test pattern to main program * Use the touchscreen to affect display brightness
125 lines
2.4 KiB
C
125 lines
2.4 KiB
C
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
#include "ssd1963.h"
|
|
#include "xpt2046.h"
|
|
|
|
// This is called when the board boots up with the user button pressed. The
|
|
// idea is to enter this mode if the wrong SPI device has been used and flashing
|
|
// is no longer possible.
|
|
__attribute__ ((noreturn))
|
|
static void lockdown( void )
|
|
{
|
|
palSetPad( GPIOD , GPIOD_LED3 );
|
|
while (TRUE) {
|
|
// EMPTY
|
|
}
|
|
}
|
|
|
|
|
|
static void displayTestPattern( u16 start_mask )
|
|
{
|
|
_ssd1963_clear_cs;
|
|
ssd1963StartWriting( 0 , 0 );
|
|
int i;
|
|
for ( i = 0 ; i < SSD1963_SCR_HEIGHT ; i ++ ) {
|
|
u16 j , c = start_mask;
|
|
for ( j = 0 ; j < SSD1963_SCR_WIDTH ; j ++ ) {
|
|
if ( ( j & 7 ) == 7 ) {
|
|
c >>= 1;
|
|
if ( !c ) {
|
|
c = 0x8000;
|
|
}
|
|
}
|
|
ssd1963WriteData( c );
|
|
}
|
|
}
|
|
_ssd1963_set_cs;
|
|
}
|
|
|
|
|
|
static int tryReading;
|
|
|
|
static void onTouchscreenIRQ( EXTDriver * driver __attribute__((unused)) ,
|
|
expchannel_t channel __attribute__((unused)) )
|
|
{
|
|
tryReading = TRUE;
|
|
}
|
|
|
|
|
|
#define PORT(P) \
|
|
case (int) GPIO##P : \
|
|
port = EXT_MODE_GPIO##P; \
|
|
break;
|
|
|
|
static void initIRQs( void )
|
|
{
|
|
EXTConfig config;
|
|
u32 i;
|
|
|
|
for ( i = 0 ; i < EXT_MAX_CHANNELS ; i ++ ) {
|
|
if ( i == XPT2046_IRQ_PAD ) {
|
|
int port;
|
|
switch ( (int) XPT2046_IRQ_PORT ) {
|
|
default: PORT(A); PORT(B);
|
|
PORT(C); PORT(D); PORT(E);
|
|
PORT(F); PORT(G); PORT(H);
|
|
}
|
|
config.channels[ i ].mode = EXT_CH_MODE_FALLING_EDGE
|
|
| EXT_CH_MODE_AUTOSTART | port;
|
|
config.channels[ i ].cb = &onTouchscreenIRQ;
|
|
} else {
|
|
config.channels[ i ].mode = EXT_CH_MODE_DISABLED;
|
|
config.channels[ i ].cb = NULL;
|
|
}
|
|
}
|
|
extStart( &EXTD1 , &config );
|
|
}
|
|
|
|
|
|
static void checkTouchScreen( void )
|
|
{
|
|
int x , y;
|
|
if ( ! xpt2046GetAverageCoordinates( &x , &y , 3 ) ) {
|
|
return;
|
|
}
|
|
|
|
x >>= 8;
|
|
|
|
_ssd1963_clear_cs;
|
|
ssd1963WriteCommand( SSD1963_CMD_SET_POST_PROC );
|
|
ssd1963WriteData( 0x40 );
|
|
ssd1963WriteData( x );
|
|
ssd1963WriteData( 0x40 );
|
|
if ( y > 2048 ) {
|
|
ssd1963WriteData( 0 );
|
|
} else {
|
|
ssd1963WriteData( 1 );
|
|
}
|
|
_ssd1963_set_cs;
|
|
}
|
|
|
|
|
|
int main( void )
|
|
{
|
|
halInit();
|
|
chSysInit();
|
|
if ( palReadPad( GPIOA , GPIOA_BUTTON ) ) {
|
|
lockdown( );
|
|
}
|
|
|
|
xpt2046Init( );
|
|
initIRQs();
|
|
ssd1963Init( );
|
|
|
|
int i = 0;
|
|
while (TRUE) {
|
|
displayTestPattern( 1 << i );
|
|
chThdSleep(100);
|
|
i = ( i + 1 ) % 16;
|
|
if ( tryReading ) {
|
|
checkTouchScreen( );
|
|
tryReading = FALSE;
|
|
}
|
|
}
|
|
}
|