Diff: main.cpp

Revision:

0:116ff1f909ba

Child:

1:e835875b325c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Aug 27 20:58:54 2010 +0000
@@ -0,0 +1,55 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+
+void DisconnectPLL0(){
+    // good practice to disable before feeding
+    __disable_irq();
+    // disconnect
+    LPC_SC->PLL0CON = 0x1;
+    LPC_SC->PLL0FEED = 0xAA;
+    LPC_SC->PLL0FEED = 0x55;
+    while (LPC_SC->PLL0STAT&(1<<25));
+    // power down
+    LPC_SC->PLL0CON = 0x0;
+    LPC_SC->PLL0FEED = 0xAA;
+    LPC_SC->PLL0FEED = 0x55;
+    while (LPC_SC->PLL0STAT&(1<<24));
+    // This is the default flash read/write setting for IRC
+    LPC_SC->FLASHCFG &= 0x0fff;
+    LPC_SC->FLASHCFG |= 0x5000;
+    LPC_SC->CCLKCFG = 0x0;
+    //  Select the IRC as clk
+    LPC_SC->CLKSRCSEL = 0x00;
+    // not using XTAL anymore
+    LPC_SC->SCS = 0x00;
+}
+
+// IAP address
+#define IAP_LOCATION 0x1FFF1FF1
+// variable for command and result
+unsigned int command[5];
+unsigned int result[5];
+// function pointer with 2 parameters
+typedef void (*IAP)(unsigned int[5],unsigned int [5]);
+// declaration of the fptr.
+IAP iap_entry = (IAP)IAP_LOCATION;
+
+int main(){
+    
+   // change clk to 4MHz - see below
+   DisconnectPLL0();
+   // stop all ISRs
+   __disable_irq();
+   //make IAP call
+   command[0] = 57;
+   iap_entry(command, result);
+   
+   // This should never get executed
+   while(1) {
+       myled = 1;
+       wait(0.2);
+       myled = 0;
+       wait(0.2);
+   }
+}