Starting touch support.

Note this branch is based off of commit 130 and hand modified the changes from arduino#117

it has a callback added from the touch controller which saves the last touch point
and a call function, that allows you to retrieve the last notification

Author: KurtE

loader/fixups.c

@@ -45,10 +45,58 @@ SYS_INIT(disable_mpu_rasr_xn, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT)
 #include <zephyr/drivers/clock_control.h>
 #include <zephyr/logging/log.h>
 
+#include <zephyr/input/input.h>
+
+// experiment to try to capture touch screen events
+typedef struct {
+	int32_t x;
+	int32_t y;
+	int32_t pressed;
+} touch_point_t;
+
+touch_point_t last_touch_point;
+
+static struct k_sem touch_event_sync;
+
+bool getVideoTouchEvent(touch_point_t *tp, k_timeout_t timeout) {
+	if (k_sem_take(&touch_event_sync, timeout) != 0) return false;
+	// BUGBUG: should probably put stuff in to return only
+	// data from whole event, but first see if anything works
+	memcpy(tp, &last_touch_point, sizeof(touch_point_t));
+	return true;
+}
+
+
+void touch_event_callback(struct input_event *evt, void *user_data)
+{
+    //printk("touch_event_callback(%p %p): %p %u %u %u %d\n", evt, user_data,
+    //        evt->dev, evt->sync, evt->type, evt->code, evt->value);
+	if (evt->code == INPUT_ABS_X) {
+		last_touch_point.x = evt->value;
+	}
+	if (evt->code == INPUT_ABS_Y) {
+		last_touch_point.y = evt->value;
+	}
+	if (evt->code == INPUT_BTN_TOUCH) {
+		last_touch_point.pressed = evt->value;
+	}
+	if (evt->sync) {
+		k_sem_give(&touch_event_sync);
+	}
+}
+static const struct device *const touch_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_touch));
+INPUT_CALLBACK_DEFINE(touch_dev, touch_event_callback, NULL);
+
+
 int camera_ext_clock_enable(void)
 {
 	int ret;
 	uint32_t rate;
+
+	// Hack in init semaphore for touch events
+	k_sem_init(&touch_event_sync, 0, 1);
+
+
 	const struct device *cam_ext_clk_dev = DEVICE_DT_GET(DT_NODELABEL(pwmclock));
 
 	if (!device_is_ready(cam_ext_clk_dev)) {
@@ -99,7 +147,7 @@ int smh_init(void) {
 	return 0;
 }
 
-SYS_INIT(smh_init, POST_KERNEL, CONFIG_CLOCK_CONTROL_PWM_INIT_PRIORITY);
+SYS_INIT(smh_init, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
 #endif
 
 #if defined(CONFIG_BOARD_ARDUINO_PORTENTA_C33) && defined(CONFIG_LLEXT)

loader/llext_exports.c

@@ -133,6 +133,9 @@ FORCE_EXPORT_SYM(video_buffer_aligned_alloc);
 FORCE_EXPORT_SYM(video_buffer_alloc);
 FORCE_EXPORT_SYM(video_buffer_release);
 #endif
+#if defined(CONFIG_BOARD_ARDUINO_GIGA_R1) && defined(CONFIG_VIDEO)
+FORCE_EXPORT_SYM(getVideoTouchEvent)
+#endif
 
 #if defined(CONFIG_SHARED_MULTI_HEAP)
 FORCE_EXPORT_SYM(shared_multi_heap_aligned_alloc);

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf

@@ -46,6 +46,8 @@ CONFIG_VIDEO_GC2145=y
 
 CONFIG_DISPLAY=y
 CONFIG_INPUT=y
+CONFIG_STM32_LTDC_FB_USE_SHARED_MULTI_HEAP=y
+CONFIG_STM32_LTDC_FB_SMH_ATTRIBUTE=2
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay

@@ -395,7 +395,7 @@
 						<&gpiob 2 0>,
 						<&gpiok 0 0>,
 						<&gpioe 4 0>,
-						<&gpioi 11 0>,
+						<&gpioi 11 0>, /* 50 */
 						<&gpioe 5 0>,
 						<&gpiok 2 0>,
 						<&gpiog 7 0>,
@@ -424,7 +424,7 @@
 						<&gpiob 12 0>,
 						<&gpiod 3 0>,
 
-						<&gpioc 4 0>,			/* A0 */
+						<&gpioc 4 0>,			/* A0  - 76*/
 						<&gpioc 5 0>,
 						<&gpiob 0 0>,
 						<&gpiob 1 0>,
@@ -435,7 +435,7 @@
 						<&gpioa 4 0>,			/* A12 */
 						<&gpioa 5 0>,			/* A13 */
 
-						<&gpioi 12 GPIO_ACTIVE_LOW>,
+						<&gpioi 12 GPIO_ACTIVE_LOW>,  /* 86 */
 						<&gpioj 13 GPIO_ACTIVE_LOW>,
 						<&gpioe 3 GPIO_ACTIVE_LOW>,
 
@@ -451,10 +451,11 @@
 						<&gpiob 6 0>,			/* SDA1 */
 						<&gpioh 12 0>,
 
-						<&gpioz 0 0>,			/* analog only A8 */
+						<&gpioz 0 0>,			/* analog only A8 97 */
 						<&gpioz 1 0>,			/* analog only A9 */
 						<&gpioz 2 0>,			/* analog only A10 */
-						<&gpioz 3 0>;			/* analog only A11 */
+						<&gpioz 3 0>,			/* analog only A11 */
+						<&gpioa 10 0>;			/* Test add pin for BLE enable 101 */
 
 		builtin-led-gpios = <&gpioi 12 GPIO_ACTIVE_LOW>,
                         <&gpioj 13 GPIO_ACTIVE_LOW>,