A7 wip

commit c3e45209b1e2c88822748a7762fed62849c2ba48
Author: Julie Zelenski <[email protected]>
Date:   Tue Nov 12 16:23:07 2024 -0800

    A7 wip

Author: zelenski

lectures/Framebuffer/code/clear/clear.c

@@ -4,6 +4,7 @@
 #include "malloc.h"
 #include "printf.h"
 #include "uart.h"
+#include "strings.h"
 
 // module-level variables
 static struct {
@@ -42,6 +43,7 @@ static void clear_int_by_int_green(void) {
     int npixels = module.width * module.height;
     for (int i = 0; i < npixels; i++) {
         *im++ = 0xff00ff00; // green
+        timer_delay_us(1);
     }
 }
 
@@ -68,7 +70,7 @@ void main(void) {
 
     printf("Screen size %d x %d\n", hdmi_get_screen_width(), hdmi_get_screen_height());
     printf("Framebuffer size %d x %d\n", module.width, module.height);
-    clear_char_by_char();
+   // clear_char_by_char();
     while (1) {
         if (!confirm("clear to white, char by char")) break;
         clear_char_by_char();

lectures/Framebuffer/code/doublebuffer/hello.c

@@ -4,7 +4,7 @@
 
 void main(void) {
     uart_init();
-    gl_init(800, 600, GL_SINGLEBUFFER); // change to GL_DOUBLEBUFFER instead
+    gl_init(800, 600, GL_DOUBLEBUFFER); // change to GL_DOUBLEBUFFER instead
 
     printf("Enter any key to exit: ");
     while (!uart_haschar()) {

lectures/Interrupts1/code/button-interrupt/main.c

@@ -31,7 +31,7 @@ void main(void) {
 
     interrupts_init();
     gpio_interrupt_init();
-    gpio_interrupt_config(button, GPIO_INTERRUPT_NEGATIVE_EDGE, false);
+    gpio_interrupt_config(button, GPIO_INTERRUPT_NEGATIVE_EDGE, true);
     gpio_interrupt_register_handler(button, button_pressed, &button);
     gpio_interrupt_enable(button);
     interrupts_global_enable();
@@ -42,8 +42,8 @@ void main(void) {
     int last_count = gCount;
     while (1) {
         if (last_count != gCount) {
-            update_screen();
             last_count = gCount;
+            update_screen();
             console_printf("\nWaiting for button click...\n");
         }
     }

lectures/Interrupts1/code/console/console_main.c

@@ -14,8 +14,7 @@ extern void console_enable_blink_cursor(void);
  * because the screen refresh is so time consuming.
  */
 
-#define USE_INTERRUPTS 0
-
+#define USE_INTERRUPTS 1
 void main(void) {
     gpio_init();
     uart_init();