Simon Ford / Mbed 2 deprecated PLL

Dependencies:   mbed

Files at this revision

API Documentation at this revision

Revision 0:7ebf892f4561, committed 2009-11-29

Comitter:
simon
Date:
Sun Nov 29 11:29:59 2009 +0000
Commit message:

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Nov 29 11:29:59 2009 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+
+int main() {
+    int Fin = 12000000; // 12MHz XTAL
+    
+    printf("PLL Registers:\n");
+    printf(" - PLL0CFG = 0x%08X\n", LPC_SC->PLL0CFG);
+    printf(" - CLKCFG  = 0x%08X\n", LPC_SC->CCLKCFG);
+    
+    int M = (LPC_SC->PLL0CFG & 0xFFFF) + 1;
+    int N = (LPC_SC->PLL0CFG >> 16) + 1;
+    int CCLKDIV = LPC_SC->CCLKCFG + 1;
+
+    printf("Clock Variables:\n");
+    printf(" - Fin = %d\n", Fin);
+    printf(" - M   = %d\n", M);
+    printf(" - N   = %d\n", N);
+    printf(" - CCLKDIV = %d\n", CCLKDIV);
+
+    int Fcco = (2 * M * 12000000) / N;
+    int CCLK = Fcco / CCLKDIV;
+
+    printf("Clock Results:\n");    
+    printf(" - Fcco = %d\n", Fcco);
+    printf(" - CCLK = %d\n", CCLK);    
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Nov 29 11:29:59 2009 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/32af5db564d4