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Honored Contributorproblem with performance counter core
Hi everyone, I am a new to nios. I've been trying to get this code to work on the cyclone 2 development board that I have. I just don't know what is wrong. I cannot get any valid result from the performance counter core of altera. any suggestion is very helpful.
# include "alt_types.h"# include <stdio.h> /* This ert_main.c example uses printf/fflush */# include <unistd.h># include <altera_avalon_performance_counter.h> /*Use to measure code performance*/ # include "varipitch.h" /* Model's header file */# include "rtwtypes.h" /* MathWorks types */# define RATE0 1# define RATE1 2 extern const float GNC_input_table[33343][21]; static RT_MODEL_varipitch varipitch_M_; static RT_MODEL_varipitch *varipitch_M = &varipitch_M_;/* Real-time model */ static BlockIO_varipitch varipitch_B; /* Observable signals */ static D_Work_varipitch varipitch_DWork;/* Observable states */ static real32_T varipitch_U_Xe[3]; /* Root inport: '<Root>/Xe' */ static real32_T varipitch_U_Ve[3]; /* Root inport: '<Root>/Ve' */ static real32_T varipitch_U_p; /* Root inport: '<Root>/p' */ static real32_T varipitch_U_dpdt; /* Root inport: '<Root>/dpdt' */ static real32_T varipitch_U_Q6; /* Root inport: '<Root>/Q6' */ static real32_T varipitch_U_Cdsin6; /* Root inport: '<Root>/Cdsin6' */ static real32_T varipitch_U_Cmas6; /* Root inport: '<Root>/Cmas6' */ static real32_T varipitch_U_Vb[3]; /* Root inport: '<Root>/Vb' */ static real32_T varipitch_U_mass_single; /* Root inport: '<Root>/mass' */ static real32_T varipitch_U_ix_single; /* Root inport: '<Root>/ix' */ static real32_T varipitch_U_iy_single; /* Root inport: '<Root>/iy' */ static real32_T varipitch_U_cg_single; /* Root inport: '<Root>/cg' */ static real32_T varipitch_U_winds_single[2]; /* Root inport: '<Root>/winds' */ static real32_T varipitch_U_clock_single; /* Root inport: '<Root>/clock' */ static real32_T varipitch_Y_Mode; /* Root outport: '<Root>/Mode' */ static real32_T varipitch_Y_CMDP; /* Root outport: '<Root>/CMDP' */ static boolean_T OverrunFlags[2] = { 0, 0 }; DEFINITION OF MYFUNCTION1{} DEFINITION OF MYFUNCTION2{ PERF_BEGIN(PERFORMANCE_COUNTER_0_BASE, RATE1); do something PERF_END(PERFORMANCE_COUNTER_0_BASE, RATE1); } int perf_print_my_formatted_report (void* perf_base, alt_u32 clock_freq_hertz) { double total_usec; alt_u64 total_clocks; alt_u64 section_clocks; int section_num = 1; const char* separator = "+---------------+-----+------------+---------------+-----------+\n"; const char* column_header = "| Section | % | Time (usec)| Time (clocks)|Occurrences|\n"; total_clocks = perf_get_total_time (perf_base); total_usec = ((double)total_clocks) / clock_freq_hertz *1000000; // Print the total at the top: printf ("--Performance Counter Report--\nTotal Time: %lld microseconds ",(alt_u64)total_usec); printf ("(%llu clock-cycles)\n\n", total_clocks); printf ("%s",separator); printf ("%s",column_header); printf ("%s",separator); for (section_num = 1; section_num <= 2; section_num++) { section_clocks = perf_get_section_time (perf_base, section_num); if (section_num == 1){ printf ("|rate0 ");} else { printf ("|rate1 ");} printf ("|%5lld",(section_clocks * 100) / total_clocks); // % printf ("|%12lld",(section_clocks*1000000) / clock_freq_hertz); // time (us) printf ("|%15lld",section_clocks); // time (clocks) printf ("|%11u", (unsigned int) perf_get_num_starts (perf_base, section_num)); // occurrences printf ("|\n"); printf ("%s",separator); } return 0; } /* The example "main" function illustrates what is required by your * application code to initialize, execute, and terminate the generated code. * Attaching rt_OneStep to a real-time clock is target specific. This example * illustates how you do this relative to initializing the model. */ int main(int_T argc, const char_T *argv[]) { /* Initialize model */ PERF_RESET(PERFORMANCE_COUNTER_0_BASE); int_T count = 0; FILE *model_out; CALL MYFUNCTION1; /* Attach rt_OneStep to a timer or interrupt service routine with * period 0.0002 seconds (the model's base sample time) here. The * call syntax for rt_OneStep is * * rt_OneStep(varipitch_M); */ printf("Warning: The simulation will run forever. " "Generated ERT main won't simulate model step behavior. " "To change this behavior select the 'MAT-file logging' option.\n"); fflush(NULL); PERF_START_MEASURING(PERFORMANCE_COUNTER_0_BASE); while(count < 1){ CALL MYFUNCTION2 PERF_BEGIN(PERFORMANCE_COUNTER_0_BASE, RATE0); count++; PERF_END(PERFORMANCE_COUNTER_0_BASE, RATE0); } PERF_STOP_MEASURING(PERFORMANCE_COUNTER_0_BASE); perf_print_my_formatted_report((void*)PERFORMANCE_COUNTER_0_BASE, ALT_CPU_FREQ); } output capture from screen: nios2-terminal: Warning: The JTAG cable you are using is not supported for Nios nios2-terminal: II systems. You may experience intermittent JTAG communication nios2-terminal: failures with this cable. Please use a USB Blaster revision B nios2-terminal: cable or another supported cable. Please refer to the file nios2-terminal: errata.txt included in the Nios II development kit documents nios2-terminal: directory for more information. nios2-terminal: connected to hardware target using JTAG UART on cable nios2-terminal: "USB-Blaster [USB-0]", device 1, instance 0 nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate) Warning: The simulation will run forever. Generated ERT main won't simulate mode l step behavior. To change this behavior select the 'MAT-file logging' option. I am loading --Performance Counter Report-- Total Time: 217020518514230016 microseconds (18446744073709551615 clock-cycles) +---------------+-----+------------+---------------+-----------+ | Section | % | Time (usec)| Time (clocks)|Occurrences| +---------------+-----+------------+---------------+-----------+ |rate0 | 0|217020518514| -1| 4294967295| +---------------+-----+------------+---------------+-----------+ |rate1 | 0|217020518514| -1| 4294967295| +---------------+-----+------------+---------------+-----------+ I generated the C code from matlab embedded real time workshop so that's why there are funky type like char_T, int_T, real32_T. Those are just regulare char, int, double but typedef in rtwtypes.h.
