Diff: main.cpp

Revision:

2:8008da2bb047

Parent:

1:3c1ad60f5cf3

Child:

3:c9f3ff8e49c0

--- a/main.cpp	Sat Apr 25 18:55:54 2020 +0000
+++ b/main.cpp	Sat Apr 25 23:21:07 2020 +0000
@@ -1,6 +1,6 @@
 #include "mbed.h"
 //#include "SDFileSystem"
-#include "FastIO.h"
+//#include "FastIO.h"
 //#include "MODDMA.h"
 
 void pllfeed() {
@@ -32,30 +32,40 @@
     LPC_SC->PLL0CON=0x00000003; pllfeed();
 }
 
-
-DigitalOut led1(LED1);
-DigitalOut led2(LED2);
-
-//MODDMA dma;
-
-void TC0_callback(void) {
-    led1 = 1;
-}
-
-Serial test(p13, p14);
-
-FastOut<p21> pixel;
-void pixelout(void) {
-    pixel = 1;
-    wait(0.1);
-    pixel=0;
-    wait(0.1);
-}
-
 int main() {
     setpll();
     pllfeed();
-    pixelout();
+    LPC_SC -> PCONP = 0;
+    //power on pwm
+    LPC_SC -> PCONP |= (1<<6);
+    //set pwm periph clock
+    LPC_SC -> PCLKSEL0 |= (1<<12);
+    //pin select (PWM1.2 on P2.1 -> DIP25)
+    //LPC_PINCON -> PINMODE_OD2 |= (1<<1); 
+    LPC_PINCON -> PINSEL4 |= (1<<2);
+    //disable internal pull down and pull up resistors
+    LPC_PINCON -> PINMODE4 |= (1<<3);
+    //set prescale to make 25Mhz timer count (TC)
+    LPC_PWM1 -> PR = 3;
+    //set trig for PWM TC to reset after each line
+    LPC_PWM1 -> MR0 = 800;
+    //enable TC reset on MR0 match (end of line)
+    LPC_PWM1 -> MCR = 1<<1;
+    //set trig for HSYNC to go low after 656 pixels
+    LPC_PWM1 -> MR2 = 656;
+    //set trig for HSYNC to go high after 752 pixels
+    LPC_PWM1 -> MR1 |= 752;
+    //enable double edged control on MR2/MR1 trigs
+    LPC_PWM1 -> PCR = 1<<2;
+    //enable output
+    LPC_PWM1 -> PCR |= 1<<10;
+    //enable TC
+    LPC_PWM1 -> TCR |= 1;
+    //enable PWM
+    LPC_PWM1 -> TCR |= 8;
+    
+    
+    
     //char s[] = "I2S CCLK/4 Verification Test";
     
     //turn on i2s periph
@@ -95,9 +105,7 @@
     //dma.Setup(config);
     //dma.Enable(config);
     while(1) {
-        //printf("%d ;", LPC_I2S -> I2SSTATE);
-        //wait(0.5);
-        pixelout();
+        
     }
 }