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examples: Remove heap allocation from C++ examples

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Cleanup of UPM C++ examples.  Switched from heap allocation to
stack allocation when possible.  This simplifies the samples since it
removes the need for explicit memory management.  A script was used to
identify and replace pointer use.  To simplify the replace script, I
re-formatted the C++ examples using the UPM .clang-format file.
Unfortuantely this changes the look of the UPM C++ examples to a large
degree.  However, examples will now have a standard look/feel and
uniform formatting.

    * Ran clang-format w/provided UPM .clang-format file
    * Removed new's/delete's whenever possible (left those in interface
      examples)
    * Added IIO sensor library implementation of callback void* arg
    * Converted all sleeps to upm defined delays (added header when
      necessary)
    * Scrubbed CXX example includes

Signed-off-by: Noel Eck <noel.eck@intel.com>
This commit is contained in:
Noel Eck
2017-08-30 15:00:29 -07:00
committed by Mihai Tudor Panu
parent bd6e4ec786
commit 5cefe7f5f3
290 changed files with 7976 additions and 8520 deletions
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49
examples/c++/tm1637.cxx
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@ -22,44 +22,45 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "tm1637.hpp"
#include <signal.h>
#include <unistd.h>
#include <sstream>
#include <stdio.h>
#include <time.h>
#include "tm1637.hpp"
#include "upm_utilities.h"
using namespace std;
using namespace upm;
bool run = true;
void sig_handler(int signo)
void
sig_handler(int signo)
{
if (signo == SIGINT)
run = false;
if (signo == SIGINT)
run = false;
}
int
main(int argc, char** argv)
{
//! [Interesting]
bool point = true;
int timezone = -7; // Your UTC offset
time_t rawtime;
struct tm * gmt;
char myTime[5];
//! [Interesting]
bool point = true;
int timezone = -7; // Your UTC offset
time_t rawtime;
struct tm* gmt;
char myTime[5];
fprintf(stdout, "TM1637 Display Example\n");
signal(SIGINT, sig_handler);
TM1637 myDisplay = TM1637(0, 1); // TM1637 on pins 0 (clk) and 1 (dio)
TM1637 myDisplay = TM1637(0, 1); // TM1637 on pins 0 (clk) and 1 (dio)
myDisplay.write(0x39, 0x09, 0x09); // Start a box using 7-segment encoding
myDisplay.writeAt(3, ']'); // Finish box using writeAt function
sleep(3); // Wait 3 seconds
myDisplay.writeAt(3, ']'); // Finish box using writeAt function
upm_delay(3); // Wait 3 seconds
while(run)
{
time(&rawtime); // Update raw time
while (run) {
time(&rawtime); // Update raw time
gmt = gmtime(&rawtime); // Get current time
int hour = (gmt) ? gmt->tm_hour : 0;
@ -67,13 +68,11 @@ main(int argc, char** argv)
// Format and store the time in 24 hour format
snprintf(myTime, 5, "%2d%02d", (hour + timezone + 24) % 24, min);
myDisplay.write(myTime); // Write to display as string
myDisplay.setColon(point ^= true); // Toggle the dots on the display
sleep(1); // Only update once every second
myDisplay.write(myTime); // Write to display as string
myDisplay.setColon(point ^= true); // Toggle the dots on the display
upm_delay(1); // Only update once every second
}
//! [Interesting]
return 0;
//! [Interesting]
return 0;
}