+/* return 1 if there is a corn near, and fill the index ptr */
+static uint8_t corn_is_near(int8_t *corn_idx, uint8_t side)
+{
+#define SENSOR_CORN_DIST 225
+#define SENSOR_CORN_ANGLE 90
+ double x = position_get_x_double(&mainboard.pos);
+ double y = position_get_y_double(&mainboard.pos);
+ double a_rad = position_get_a_rad_double(&mainboard.pos);
+ double x_corn, y_corn;
+ int16_t x_corn_int, y_corn_int;
+
+ if (side == I2C_LEFT_SIDE) {
+ x_corn = x + cos(a_rad + RAD(SENSOR_CORN_ANGLE)) * SENSOR_CORN_DIST;
+ y_corn = y + sin(a_rad + RAD(SENSOR_CORN_ANGLE)) * SENSOR_CORN_DIST;
+ }
+ else {
+ x_corn = x + cos(a_rad + RAD(-SENSOR_CORN_ANGLE)) * SENSOR_CORN_DIST;
+ y_corn = y + sin(a_rad + RAD(-SENSOR_CORN_ANGLE)) * SENSOR_CORN_DIST;
+ }
+ x_corn_int = x_corn;
+ y_corn_int = y_corn;
+
+ *corn_idx = xycoord_to_corn_idx(&x_corn_int, &y_corn_int);
+ if (*corn_idx < 0)
+ return 0;
+ return 1;
+}
+
+/*
+ * - send the correct commands to the spickles
+ * - return 1 if we need to stop (cobboard is stucked)
+*/
+static uint8_t handle_spickles(void)
+{
+ int8_t corn_idx;
+
+ return 0;
+
+ if (!corn_is_near(&corn_idx, I2C_LEFT_SIDE))
+ i2c_cobboard_mode_deploy(I2C_LEFT_SIDE);
+ else {
+ if (corn_table[corn_idx] == TYPE_WHITE_CORN)
+ i2c_cobboard_mode_harvest(I2C_LEFT_SIDE);
+ else
+ i2c_cobboard_mode_pack(I2C_LEFT_SIDE);
+ }
+/* printf("%d %d\n", corn_idx, corn_table[corn_idx]); */
+/* time_wait_ms(100); */
+
+ if (!corn_is_near(&corn_idx, I2C_RIGHT_SIDE))
+ i2c_cobboard_mode_deploy(I2C_RIGHT_SIDE);
+ else {
+ if (corn_table[corn_idx] == TYPE_WHITE_CORN)
+ i2c_cobboard_mode_harvest(I2C_RIGHT_SIDE);
+ else
+ i2c_cobboard_mode_pack(I2C_RIGHT_SIDE);
+ }
+
+ return 0;
+}
+
+uint8_t line2line(uint8_t dir1, uint8_t num1,
+ uint8_t dir2, uint8_t num2)
+{
+ double line1_a_rad, line1_a_deg, line2_a_rad;
+ double diff_a_deg, diff_a_deg_abs, beta_deg;
+ double radius;
+ struct line_2pts l1, l2;
+ line_t ll1, ll2;
+ point_t p;
+ uint8_t err;
+
+ /* convert to 2 points */
+ num2line(&l1, dir1, num1);
+ num2line(&l2, dir2, num2);
+
+ printf_P(PSTR("A2 (%2.2f, %2.2f) -> (%2.2f, %2.2f)\r\n"),
+ l1.p1.x, l1.p1.y, l1.p2.x, l1.p2.y);
+ printf_P(PSTR("B2 (%2.2f, %2.2f) -> (%2.2f, %2.2f)\r\n"),
+ l2.p1.x, l2.p1.y, l2.p2.x, l2.p2.y);
+
+ /* convert to line eq and find intersection */
+ pts2line(&l1.p1, &l1.p2, &ll1);
+ pts2line(&l2.p1, &l2.p2, &ll2);
+ intersect_line(&ll1, &ll2, &p);
+
+ line1_a_rad = atan2(l1.p2.y - l1.p1.y,
+ l1.p2.x - l1.p1.x);
+ line1_a_deg = DEG(line1_a_rad);
+ line2_a_rad = atan2(l2.p2.y - l2.p1.y,
+ l2.p2.x - l2.p1.x);
+ diff_a_deg = DEG(line2_a_rad - line1_a_rad);
+ diff_a_deg_abs = fabs(diff_a_deg);
+
+ if (diff_a_deg_abs < 70.) {
+ radius = 200;
+ if (diff_a_deg > 0)
+ beta_deg = 40;
+ else
+ beta_deg = -40;
+ }
+ else if (diff_a_deg_abs < 100.) {
+ radius = 100;
+ if (diff_a_deg > 0)
+ beta_deg = 40;
+ else
+ beta_deg = -40;
+ }
+ else {
+ radius = 120;
+ if (diff_a_deg > 0)
+ beta_deg = 60;
+ else
+ beta_deg = -60;
+ }
+
+ trajectory_clitoid(&mainboard.traj, l1.p1.x, l1.p1.y,
+ line1_a_deg, 150., diff_a_deg, beta_deg,
+ radius, xy_norm(l1.p1.x, l1.p1.y,
+ p.x, p.y));
+ err = 0;
+ while (err == 0) {
+ err = WAIT_COND_OR_TRAJ_END(handle_spickles(), 0xFF);
+ if (err == 0) {
+ /* cobboard is stucked */
+ trajectory_hardstop(&mainboard.traj);
+ return err; /* XXX do something */
+ }
+ err = test_traj_end(0xFF);
+ }
+ return err;
+}
+
+void num2line(struct line_2pts *l, uint8_t dir, uint8_t num)
+{
+ float n = num;
+
+ switch (dir) {
+
+ case LINE_UP:
+ l->p1.x = n * 450 + 375;
+ l->p1.y = COLOR_Y(0);
+ l->p2.x = n * 450 + 375;
+ l->p2.y = COLOR_Y(2100);
+ break;
+ case LINE_DOWN:
+ l->p1.x = n * 450 + 375;
+ l->p1.y = COLOR_Y(2100);
+ l->p2.x = n * 450 + 375;
+ l->p2.y = COLOR_Y(0);
+ break;
+ case LINE_R_UP:
+ l->p1.x = 150;
+ l->p1.y = COLOR_Y(-n * 500 + 1472);
+ l->p2.x = 2850;
+ l->p2.y = COLOR_Y((-n + 4) * 500 + 972);
+ break;
+ case LINE_L_DOWN:
+ l->p1.x = 2850;
+ l->p1.y = COLOR_Y((-n + 4) * 500 + 972);
+ l->p2.x = 150;
+ l->p2.y = COLOR_Y(-n * 500 + 1472);
+ break;
+ case LINE_L_UP:
+ l->p1.x = 2850;
+ l->p1.y = COLOR_Y(-n * 500 + 1472);
+ l->p2.x = 150;
+ l->p2.y = COLOR_Y((-n + 4) * 500 + 972);
+ break;
+ case LINE_R_DOWN:
+ l->p1.x = 150;
+ l->p1.y = COLOR_Y((-n + 4) * 500 + 972);
+ l->p2.x = 2850;
+ l->p2.y = COLOR_Y(-n * 500 + 1472);
+ break;
+ default:
+ break;
+ }
+}
+
+