Diff: main.cpp

Revision:

0:fa9325356677

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Apr 28 15:50:27 2020 +0000
@@ -0,0 +1,87 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2019 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX);
+PortOut sekmin(PortC,0xFFFF);
+PortOut st(PortB,0xFF);
+DigitalOut blink(PA_5);
+
+
+int sek=0, mins=59, stde=23;
+unsigned int t1,t2;
+
+void TIM6isr()
+{
+    blink=!blink;
+    sek++;
+    if (sek==60)
+    {
+        sek=0;
+        mins++;
+        if (mins==60)
+        {
+            mins=0;
+            stde++;
+            if (stde==24)
+            {
+                stde=0;   
+            }
+        }   
+    }
+    TIM6->SR=0;
+    HAL_NVIC_ClearPendingIRQ(TIM6_IRQn);
+}
+
+/* TIM6 init function */
+static void tim6_Init(void)
+{
+    RCC->APB1ENR|=0b10000;  //Clock Enable
+    TIM6->PSC=31999;         //Prescaler 1ms
+    TIM6->ARR=1000;         //Autoreload 1s
+    TIM6->DIER=1;           //UIE = 1 (Update Interrupt Enable)
+    TIM6->SR=0;             //UIF =0 (Update Interrupt Flag)
+    TIM6->CR1=1;            //CEN=1 (Counter Enable)
+    
+    NVIC_SetVector(TIM6_IRQn, (uint32_t)&TIM6isr);
+    HAL_NVIC_EnableIRQ(TIM6_IRQn);
+}
+
+void sendeZeit()
+{
+    pc.printf("%d,%d,%d,%d,%d,%d",
+    (unsigned int)sekmin%16,
+    (unsigned int)(sekmin/16)%16,
+    (unsigned int)(sekmin/256)%16,
+    (unsigned int)(sekmin/4096)%16,
+    (unsigned int) st%16,
+    (unsigned int) st/16);   
+}
+
+int main()
+{
+    volatile int sekalt=0;
+
+    tim6_Init();
+    
+    while (true) {
+        //sekmin=sek;
+        if (sekalt!=sek)
+        {
+         //   sekmin=sek;
+            sekalt=sek;
+            t1=sek%10;
+            t1=t1+((sek/10)<<4);
+            t1=t1+((mins%10)<<8);
+            t1=t1+((mins/10)<<12);
+            t2=stde%10;
+            t2=t2+((stde/10)<<4); 
+            sekmin=t1;
+            st=t2; 
+            sendeZeit();
+        }
+    }
+}