Diff: record_ring/record_ring.cpp

Revision:

0:79615902fcb0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/record_ring/record_ring.cpp	Fri Jul 10 18:13:44 2015 +0000
@@ -0,0 +1,88 @@
+#include "mbed.h"
+#include "record_ring.h"
+/*
+J.J.Trinder, based on original code for midi projects 199X
+updateded sometime to the MBED
+Yeh its atad klunky, it works and is useful to explain things to people...
+*/
+
+JRecordRing::JRecordRing()
+{
+    int bufsize = buff_size;
+    buf = new log_record [bufsize+1];
+    // sp = ep = buf;
+    memset(buf,0,bufsize);
+}
+
+JRecordRing::~JRecordRing()
+{
+//not convinced this cleans up properly
+    delete [] buf;
+}
+/*======================================================================*/
+/* RingWriteToBuffer                     */
+/*======================================================================*/
+//add critical section ie disable interrupts while fiddling with buffers
+int JRecordRing::RingWriteToBuffer(log_record n)
+{
+    // printf("WriteInBuffer%d",inCount);
+    __disable_irq();    // Disable Interrupts
+
+// do something that can't be interrupted
+    opBuffer[inIndex].timestamp = n.timestamp;
+    opBuffer[inIndex].ad1 = n.ad1;
+    opBuffer[inIndex].ad2 = n.ad2;
+    opBuffer[inIndex].ad3 = n.ad3;
+    opBuffer[inIndex].ad4 = n.ad4;
+    opBuffer[inIndex].ad5 = n.ad5;
+    opBuffer[inIndex].ad6 = n.ad6;
+    opBuffer[inIndex].count = n.count;
+    opBuffer[inIndex].count2 = n.count2;
+    opBuffer[inIndex].record_type = n.record_type;
+    opBuffer[inIndex].temperature = n.temperature;
+    inCount++;
+    inIndex++;
+    if (inIndex >= buff_size)
+        inIndex = 0;
+    __enable_irq();     // Enable Interrupts
+    //printf("ZWriteInBuffer%d\n",inCount);
+    return 0;
+}
+
+
+/*======================================================================*/
+/* Output whats remaining....            */
+/*======================================================================*/
+long JRecordRing::get_next_record(log_record * lr)
+{
+
+    //  long toSend;
+#ifdef _PC
+    printf("\nCall in %x out %x count %x",inIndex,outIndex, inCount);
+#endif
+    if (inCount == 0)
+        return -1;     /* nowt to send */
+    __disable_irq();    // Disable Interrupts
+    //lr. = opBuffer[outIndex];
+    lr->timestamp = opBuffer[outIndex].timestamp;
+    lr->ad1 =     opBuffer[outIndex].ad1;
+    lr->ad2 =     opBuffer[outIndex].ad2;
+    lr->ad3 =     opBuffer[outIndex].ad3;
+    lr->ad4 =     opBuffer[outIndex].ad4;
+    lr->ad5 =     opBuffer[outIndex].ad5;
+    lr->ad6 =     opBuffer[outIndex].ad6;
+    lr->count =   opBuffer[outIndex].count;
+    lr->count2 =  opBuffer[outIndex].count2;
+    lr->temperature =  opBuffer[outIndex].temperature;
+    lr->record_type =  opBuffer[outIndex].record_type;
+
+#ifdef _PC
+    printf(" <%s> ",lr->count);
+#endif
+    inCount--;
+    outIndex++;
+    if (outIndex >=buff_size)
+        outIndex = 0;
+    __enable_irq();     // Enable Interrupts
+    return 0; //check what we should return as now record in the arg
+}
\ No newline at end of file