Diff: main.cpp

Revision:

80:ff42f77928ad

Parent:

79:a022f7789a49

Child:

81:7087ba9d18bb

--- a/main.cpp	Mon Feb 01 14:22:38 2021 +0000
+++ b/main.cpp	Wed Feb 03 11:30:30 2021 +0000
@@ -1,33 +1,8 @@
-/* SDT-example-blinky
- * 
- * Copyright (c) 2018 Sigma Delta Technologies Inc.
- * 
- * MIT License
- * 
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation
- * files (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use,
- * copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following
- * conditions:
- * 
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
+/* ILI9341 interface for the NRF52832
  */
 
 #include "mbed.h"
-
+#include "display.h"
 /* Serial */
 #define BAUDRATE 9600
 Serial g_Serial_pc(P0_18, P0_14, BAUDRATE);
@@ -35,23 +10,67 @@
 /* DigitalOut */
 #define LED_ON      0
 #define LED_OFF     1
-//DigitalOut g_DO_LedRed(LED_RED, LED_OFF);
-//DigitalOut g_DO_LedGreen(LED_GREEN, LED_OFF);
-//DigitalOut g_DO_LedBlue(LED_BLUE, LED_OFF);
+
 DigitalOut g_DO_LedBlue(A5, LED_OFF);
-//mosi,miso,clk,ss
-SPI spi(P0_25,P0_26,P0_27,P0_28);
-DigitalOut Rst(P0_21);
-DigitalOut DC(P0_20);
+Display display;
+
+uint32_t prbs()
+{
+    // This is an unverified 31 bit PRBS generator
+    // It should be maximum length but this has not been verified 
+    static uint32_t shift_register=0xaa551199;
+    unsigned long new_bit=0;
+    static int busy=0; // need to prevent re-entrancy here  
+    if (!busy)
+    {
+        busy=1;
+        new_bit= ((shift_register & (1<<27))>>27) ^ ((shift_register & (1<<30))>>30);
+        new_bit= ~new_bit;
+        new_bit = new_bit & 1;
+        shift_register=shift_register << 1;
+        shift_register=shift_register | (new_bit);
+        busy=0;
+    }
+    return shift_register & 0x7ffffff; // return 31 LSB's 
+}
+uint32_t random(uint32_t lower,uint32_t upper)
+{
+    return (prbs()%(upper-lower))+lower;
+}
 int main(void) {
-    spi.format(8, 3);
-    spi.frequency(1000000);
+  
+    int Count;
+    display.begin();
     
     while(true) {
-        //g_Serial_pc.printf("LED Toggle\r\n");
-        spi.write(0xa5);
+        g_Serial_pc.printf("LED Toggle\r\n");     
         g_DO_LedBlue = !g_DO_LedBlue;
-        wait(0.1);                // 1sec
+        
+        for (Count = 0; Count < 200; Count++)
+        {
+            display.drawRectangle(random(0,240),random(0,320),random(0,240),random(0,320),random(0,0xffff));
+        }
+        display.fillRectangle(0,0,240,320,0);
+        for (Count = 0; Count < 200; Count++)
+        {
+           
+           display.fillRectangle(random(0,240),random(0,320),random(0,240),random(0,320),random(0,0xffff));           
+
+        }
+        display.fillRectangle(0,0,240,320,0);
+        for (Count = 0; Count < 200; Count++)
+        {
+            display.drawCircle(random(0,240),random(0,240),random(0,320),random(0,0xffff));
+
+        }
+        display.fillRectangle(0,0,240,320,0);
+        for (Count = 0; Count < 50; Count++)
+        {
+            display.fillCircle(random(0,240),random(0,320),random(0,120),random(0,0xffff));
+
+        }
+        display.fillRectangle(0,0,240,320,0);
+        
     }
 
     return 0;