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#include <stdlib.h>
#include "eve.h"
#include "eve_touch_engine.h"
static const uint32_t _reg_touch[] = {
REG_CTOUCH_TOUCH0_XY,
REG_CTOUCH_TOUCH1_XY,
REG_CTOUCH_TOUCH2_XY,
REG_CTOUCH_TOUCH3_XY
};
static const uint32_t _reg_tag[] = {
REG_TOUCH_TAG,
REG_TOUCH_TAG1,
REG_TOUCH_TAG2,
REG_TOUCH_TAG3,
REG_TOUCH_TAG4
};
static const uint32_t _reg_track[] = {
REG_TRACKER,
REG_TRACKER_1,
REG_TRACKER_2,
REG_TRACKER_3,
REG_TRACKER_4
};
void eve_touch_init_engine(void) {
/* configure touch */
eve_write8(REG_CPURESET, 2); /* touch engine reset */
eve_write16(REG_TOUCH_CONFIG, 0x4000); /* host mode multi touch */
eve_write8(REG_CTOUCH_EXTENDED, 0x00); /* set extended mode */
eve_write8(REG_CPURESET, 0); /* clear reset */
eve_touch_ehost_enter(0, 0x8000, 0x8000);
eve_touch_ehost_end();
}
void eve_touch_start(void) {
uint16_t intr_mask;
intr_mask = eve_read16(REG_INT_MASK);
eve_write16(REG_INT_MASK, intr_mask | (EVE_INT_CONVCOMPLETE | EVE_INT_TAG));
eve_write8(REG_TOUCH_MODE, EVE_TMODE_CONTINUOUS);
}
void eve_touch_stop(void) {
uint16_t intr_mask;
intr_mask = eve_read16(REG_INT_MASK);
eve_write16(REG_INT_MASK, intr_mask & ~(EVE_INT_CONVCOMPLETE | EVE_INT_TAG));
eve_timer_clear(NULL);
eve_write8(REG_TOUCH_MODE, EVE_TMODE_OFF);
}
void eve_touch_set_extended(int extended) {
eve_write8(REG_CPURESET, 2); /* touch engine reset */
eve_write8(REG_CTOUCH_EXTENDED, !extended); /* set / clear extended mode */
eve_write8(REG_CPURESET, 0); /* clear reset */
}
void eve_touch_get_matrix(uint32_t *touch_matrix) {
touch_matrix[0] = eve_read32(REG_TOUCH_TRANSFORM_A);
touch_matrix[1] = eve_read32(REG_TOUCH_TRANSFORM_B);
touch_matrix[2] = eve_read32(REG_TOUCH_TRANSFORM_C);
touch_matrix[3] = eve_read32(REG_TOUCH_TRANSFORM_D);
touch_matrix[4] = eve_read32(REG_TOUCH_TRANSFORM_E);
touch_matrix[5] = eve_read32(REG_TOUCH_TRANSFORM_F);
}
void eve_touch_set_matrix(const uint32_t *touch_matrix) {
eve_write32(REG_TOUCH_TRANSFORM_A, touch_matrix[0]);
eve_write32(REG_TOUCH_TRANSFORM_B, touch_matrix[1]);
eve_write32(REG_TOUCH_TRANSFORM_C, touch_matrix[2]);
eve_write32(REG_TOUCH_TRANSFORM_D, touch_matrix[3]);
eve_write32(REG_TOUCH_TRANSFORM_E, touch_matrix[4]);
eve_write32(REG_TOUCH_TRANSFORM_F, touch_matrix[5]);
}
uint32_t eve_touch_reg_xy(int i) {
uint32_t touch_xy;
touch_xy = i < 4 ? eve_read32(_reg_touch[i]) : (((uint32_t)eve_read16(REG_CTOUCH_TOUCH4_X) << 16) | eve_read16(REG_CTOUCH_TOUCH4_Y));
return touch_xy;
}
uint8_t eve_touch_reg_tag(int i) {
uint8_t touch_tag;
touch_tag = eve_read8(_reg_tag[i]);
return touch_tag;
}
uint32_t eve_touch_reg_track(int i) {
uint32_t touch_track;
touch_track = eve_read32(_reg_track[i]);
return touch_track;
}
int eve_touch_ehost_ready(void) {
uint8_t ack;
ack = eve_read8(REG_EHOST_TOUCH_ACK);
return (ack == 1);
}
void eve_touch_ehost_enter(uint8_t id, uint16_t x, uint16_t y) {
eve_write16(REG_EHOST_TOUCH_X, x);
eve_write16(REG_EHOST_TOUCH_Y, y);
eve_write8(REG_EHOST_TOUCH_ID, id);
}
void eve_touch_ehost_end(void) {
eve_write8(REG_EHOST_TOUCH_ID, 0xf);
}
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