Prep

src/main.c

@@ -2,7 +2,7 @@
 #include <hardware/i2c.h>
 #include <stdio.h>
 #include <unistd.h>
-
+#include "hardware/pwm.h"
 const uint8_t init[4] = {0x21, 0xa0, 0xe1, 0x81};
 const uint8_t zeile[8] = {0x00, 0x02, 0x04, 0x06, 0x08, 0x10, 0x12, 0x14};
 const uint8_t fill[17] = {0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
@@ -104,6 +104,27 @@ const uint8_t better_matrix[65][17] = {
     {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0b01111111, 0x00},
     {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0b11111111, 0x00},
 };
+
+void set_progress(int percentage)
+{
+    int numerator = (percentage * 32) / 100;
+
+    for (int i = 0; i <= numerator; i++)
+    {
+        i2c_write_blocking(i2c_default, 0x70, better_matrix[i], 17, false);
+        //  sleep
+        // for (int j = 0; j < 100000; j++)
+        // {
+        //    volatile int i = 0;
+        // }
+    }
+}
+int a = 0;
+
+void callback()
+{
+    a = 1;
+}
 int main()
 {
     // clock enable: 100000 baud (bit/s)
@@ -130,27 +151,33 @@ int main()
 
     i2c_write_blocking(i2c_default, 0x70, empty, 17, false);
 
-    for (int i = 0; i <= 64; i++)
-    {
-        i2c_write_blocking(i2c_default, 0x70, better_matrix[i], 17, false);
+    set_progress(200);
+    set_progress(30);
 
-        // sleep
-        for (int j = 0; j < 1000000; j++)
-        {
-            volatile int i = 0;
-        }
-    }
+    gpio_set_function(28, GPIO_FUNC_PWM);
 
-    for (int i = 64; i >= 0; i--)
-    {
-        i2c_write_blocking(i2c_default, 0x70, better_matrix[i], 17, false);
+    uint slice_num = pwm_gpio_to_slice_num(28);
 
-        // sleep
-        for (int j = 0; j < 1000000; j++)
-        {
-            volatile int i = 0;
-        }
-    }
+    // 133 Mhz / 133 = 1 Mhz => 1 cycle = 1 us
+    // 10 mikrosekunden
+    pwm_set_clkdiv(slice_num, 133);
+    pwm_set_wrap(slice_num, 65000);
+    pwm_set_chan_level(slice_num, PWM_CHAN_A, 10);
+    pwm_set_enabled(slice_num, true);
+
+    uint test = 500;
+    set_progress(0);
+
+    uint another_slice_num = pwm_gpio_to_slice_num(27);
+    // 65000 * 133 * 10^6 10 meters
+    // 65000 max cycles
+    pwm_set_clkdiv(another_slice_num, 133);
+    pwm_set_wrap(another_slice_num, 65000);
+    pwm_set_clkdiv_mode(another_slice_num, PWM_DIV_B_HIGH);
+    pwm_set_enabled(slice_num, true);
 
+    int b = 7;
+    gpio_set_irq_enabled_with_callback(27, GPIO_IRQ_EDGE_FALL, true, callback);
+    set_progress(100);
     return 0;
 }
\ No newline at end of file