Diff: main.cpp

Revision:

0:325fcc4dca89

Child:

1:67ac582483f9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon May 18 10:02:51 2015 +0000
@@ -0,0 +1,49 @@
+/*
+ * mbed Application program
+ *      Check "System clock" frequency
+ *
+ * Copyright (c) 2015 Kenji Arai / JH1PJL
+ *  http://www.page.sannet.ne.jp/kenjia/index.html
+ *  http://mbed.org/users/kenjiArai/
+ *      Created: may       18th, 2015
+ *      Revised: may       18th, 2015
+ *
+ * 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.
+ */
+
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+
+int main() {
+    printf("\r\n Your mbed SysClock is %u Hz.\r\n", SystemCoreClock);
+    while(true) {
+        myled = !myled;
+        wait(1.0);
+    }
+}
+
+/* measured by JH1PJL on May 18th, 2015
+
+ Check old revision
+ Case L152
+    before and rev.81 20140319  -> 16000000Hz
+    rev.82 and after  20140407  -> 24000000Hz
+ Case F401
+    all rev.(?)                 -> 84000000Hz
+ Case F411
+    befoe and rev.97  20150414  -> 100000000Hz
+    rev.98& 99 (as of 20150518) -> 96000000Hz
+ Case LPC1768
+    rev.99 -> 96000000Hz
+ Case GR-PEACH
+    error "SystemCoreClock" is undefined
+ Case LPC1114FN28
+    rev.99 -> 48000000Hz
+
+ */
+ 
\ No newline at end of file