1 files changed, 159 insertions, 0 deletions
diff --git a/source/application/hal/platforms/bare-metal/data_presentation/lcd/lcd_img.c b/source/application/hal/platforms/bare-metal/data_presentation/lcd/lcd_img.c
new file mode 100644
index 0000000..75f58fd
--- /dev/null
+++ b/source/application/hal/platforms/bare-metal/data_presentation/lcd/lcd_img.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "lcd_img.h"
+
+#include "bsp.h"
+
+#include <string.h>
+#include <assert.h>
+
+static int show_title(void)
+{
+    char title[128];
+    int status = 0;
+
+    /* LCD title string */
+#if defined(CPU_CORTEX_M55)
+    const char* cpu_name = "Arm Cortex-M55";
+#else /* defined(CPU_CORTEX_M55) */
+    const char* cpu_name = "Arm CPU";
+#endif /* defined(CPU_CORTEX_M55) */
+
+    lcd_set_text_color(White);
+
+    /* First line */
+    snprintf(title, sizeof(title), "Arm ML embedded code samples");
+
+    if (0 != (status = lcd_display_text(
+            title, strlen(title), 10, 0, false))) {
+        return status;
+    }
+
+    /* Second line */
+#if defined (ARM_NPU)
+    snprintf(title, sizeof(title), "%s + Arm Ethos-U55 NPU", cpu_name);
+#else /* defined (ARM_NPU) */
+    snprintf(title, sizeof(title), "%s", cpu_name);
+#endif /* defined (ARM_NPU) */
+
+    return lcd_display_text(title, strlen(title), 10, 20, false);
+}
+
+int lcd_init(void)
+{
+    GLCD_Initialize();
+    GLCD_Clear(Black);
+    return show_title();
+}
+
+int lcd_display_image(uint8_t* data, const uint32_t width,
+    const uint32_t height, const uint32_t channels,
+    const uint32_t pos_x, const uint32_t pos_y,
+    const uint32_t downsample_factor)
+{
+    /* Sanity checks */
+    assert(data);
+    if ((pos_x + width/downsample_factor > GLCD_WIDTH) ||
+            (pos_y + height/downsample_factor > GLCD_HEIGHT)) {
+        printf_err("Invalid image size for given location!\n");
+        return 1;
+    }
+
+    if (1 == channels || 3 == channels) {
+        GLCD_Image(data, width, height, channels, pos_x, pos_y,
+            downsample_factor);
+    } else {
+        printf_err("Only single and three channel images are supported!\n");
+        return 1;
+    }
+
+    return 0;
+}
+
+int lcd_display_text(const char* str, const size_t str_sz,
+    const uint32_t pos_x, const uint32_t pos_y,
+    const bool allow_multiple_lines)
+{
+    /* We use a font 0 which is 9x15. */
+    const uint32_t x_span =  9; /* Each character is this  9 pixels "wide". */
+    const uint32_t y_span = 15; /* Each character is this 15 pixels "high". */
+
+    if (str_sz == 0) {
+        return 1;
+    }
+
+    /* If not within the LCD bounds, return error. */
+    if (pos_x + x_span > GLCD_WIDTH || pos_y + y_span > GLCD_HEIGHT) {
+        return 1;
+    } else {
+        const unsigned char font_idx = 0; /* We are using the custom font = 0 */
+
+        const uint32_t col = pos_x/x_span;
+        const uint32_t max_cols = GLCD_WIDTH/x_span - 1;
+        const uint32_t max_lines = GLCD_HEIGHT/y_span - 1;
+
+        uint32_t i = 0;
+        uint32_t current_line = pos_y/y_span;
+        uint32_t current_col = col;
+
+        /* Display the string on the LCD. */
+        for (i = 0; i < str_sz; ++i) {
+
+            if (allow_multiple_lines) {
+
+                /* If the next character won't fit. */
+                if (current_col > max_cols) {
+                    current_col = col;
+
+                    /* If the next line won't fit. */
+                    if (++current_line  > max_lines) {
+                        return 1;
+                    }
+                }
+            }
+
+            GLCD_DisplayChar(current_line, current_col++, font_idx, str[i]);
+        }
+    }
+    return 0;
+}
+
+int lcd_display_box(const uint32_t pos_x, const uint32_t pos_y,
+    const uint32_t width, const uint32_t height, const uint16_t color)
+{
+    /* If not within the LCD bounds, return error. */
+    if (pos_x > GLCD_WIDTH || pos_y > GLCD_HEIGHT) {
+        return 1;
+    }
+    else {
+        GLCD_Box(pos_x, pos_y, width, height, color);
+    }
+    return 0;
+}
+
+int lcd_clear(const uint16_t color)
+{
+    GLCD_Clear(color);
+    GLCD_SetTextColor(White);
+    return show_title();
+}
+
+int lcd_set_text_color(const uint16_t color)
+{
+    GLCD_SetTextColor(color);
+    return 0;
+}