INVCPU v1.00 PCB Test Suit. INVCPU v1.00 PCB Test Suit.
System Core Clock = 120000000 Hz System Core Clock = 120000000 Hz
Now. System ticks = 750122l, Sysytem time = 0.006251 s Now. System ticks = 707843l, Sysytem time = 0.005899 s
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Coremark test Coremark test
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2K performance run parameters for coremark. 2K performance run parameters for coremark
CoreMark Size : 666 CoreMark Size : 666
Total ticks : 2090014320 Total ticks : 1619555180
Total time (secs): 17.416786 Total time (secs): 13.496293
Iterations/Sec : 287.079373 Iterations/Sec : 370.472095
Iterations : 5000 Iterations : 5000
Compiler version : ARM CC 5030069 Compiler version : IAR CC 6050006
Compiler flags : -o3 Compiler flags : -o3
Memory location : STACK Memory location : STACK
seedcrc : 0xe9f5 seedcrc : 0xe9f5
[0]crclist : 0xe714 [0]crclist : 0xe714
[0]crcmatrix : 0x1fd7 [0]crcmatrix : 0x1fd7
[0]crcstate : 0x8e3a [0]crcstate : 0x8e3a
[0]crcfinal : 0xbd59 [0]crcfinal : 0xbd59
Correct operation validated. Correct operation validated.
CoreMark 1.0 : 287.079373 / ARM CC 5030069 -o3 / STACK CoreMark 1.0 : 370.472095 / IAR CC 6050006 -o3 / STACK
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Algorithm 'Qsort' (standart C library ): Algorithm 'Qsort' (standart C library ):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 6452, time(us)=53.77 Measured max. number of cycles = 12865, time(us)=107.21
Measured min. number of cycles = 3722, time(us)=31.02 Measured min. number of cycles = 6340, time(us)=52.83
Measured aver.number of cycles = 4788, time(us)=39.90 Measured aver.number of cycles = 8508, time(us)=70.90

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Algorithm 'Shell' Algorithm 'Shell' (http://electronix.ru/forum/index.php?s=&showtopic=114436&view=findpost&p=1181687):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 2372, time(us)=19.77 Measured max. number of cycles = 2610, time(us)=21.75
Measured min. number of cycles = 1355, time(us)=11.29 Measured min. number of cycles = 1565, time(us)=13.04
Measured aver.number of cycles = 1949, time(us)=16.24 Measured aver.number of cycles = 2098, time(us)=17.48

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Algorithm 'Select' Algorithm 'Select' (Numerical Recipes in C, 8.5 Selecting the Mth Largest p.341):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 1453, time(us)=12.11 Measured max. number of cycles = 1530, time(us)=12.75
Measured min. number of cycles = 472, time(us)=3.93 Measured min. number of cycles = 495, time(us)=4.13
Measured aver.number of cycles = 825, time(us)=6.88 Measured aver.number of cycles = 858, time(us)=7.15

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Algorithm 'Selip' Algorithm 'Selip' (Numerical Recipes in C, 8.5 Selecting the Mth Largest p.343):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 3325, time(us)=27.71 Measured max. number of cycles = 3590, time(us)=29.92
Measured min. number of cycles = 1090, time(us)=9.08 Measured min. number of cycles = 1170, time(us)=9.75
Measured aver.number of cycles = 2957, time(us)=24.64 Measured aver.number of cycles = 3266, time(us)=27.22

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Algorithm 'Xenia' Algorithm 'Xenia' (http://electronix.ru/forum/index.php?s=&showtopic=114436&view=findpost&p=1180687):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 5375, time(us)=44.79 Measured max. number of cycles = 5340, time(us)=44.50
Measured min. number of cycles = 469, time(us)=3.91 Measured min. number of cycles = 474, time(us)=3.95
Measured aver.number of cycles = 2947, time(us)=24.56 Measured aver.number of cycles = 2766, time(us)=23.05

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Algorithm 'Neiver' Algorithm 'Neiver' (http://electronix.ru/forum/index.php?s=&showtopic=114436&view=findpost&p=1180944):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 3014, time(us)=25.12 Measured max. number of cycles = 2540, time(us)=21.17
Measured min. number of cycles = 754, time(us)=6.28 Measured min. number of cycles = 681, time(us)=5.68
Measured aver.number of cycles = 761, time(us)=6.34 Measured aver.number of cycles = 695, time(us)=5.79

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Algorithm 'Ekstrom' Algorithm 'Ekstrom' (http://embeddedgurus.com/stack-overflow/tag/median-filter/):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 694, time(us)=5.78 Measured max. number of cycles = 637, time(us)=5.31
Measured min. number of cycles = 632, time(us)=5.27 Measured min. number of cycles = 563, time(us)=4.69
Measured aver.number of cycles = 637, time(us)=5.31 Measured aver.number of cycles = 574, time(us)=4.78

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Algorithm 'Klen' Algorithm 'Klen' (http://electronix.ru/forum/index.php?s=&showtopic=114436&view=findpost&p=1180679)
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 1967, time(us)=16.39 Measured max. number of cycles = 7120, time(us)=59.33
Measured min. number of cycles = 822, time(us)=6.85 Measured min. number of cycles = 2580, time(us)=21.50
Measured aver.number of cycles = 1169, time(us)=9.74 Measured aver.number of cycles = 4260, time(us)=35.50

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Algorithm 'VAI' (http://caxapa.ru/170626.html): Algorithm 'VAI' (http://caxapa.ru/170626.html):
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Results CRC = 81AD Results CRC = 7CBB
Number of samplles = 31 Number of samplles = 31
Number of iterations = 10000 Number of iterations = 10000
Measured max. number of cycles = 5707, time(us)=47.56 Measured max. number of cycles = 4627, time(us)=38.56
Measured min. number of cycles = 5650, time(us)=47.08 Measured min. number of cycles = 4549, time(us)=37.91
Measured aver.number of cycles = 5652, time(us)=47.10 Measured aver.number of cycles = 4562, time(us)=38.02

#define ADC_BUFFER_SIZE 32
#define ADC_BUFFER_MASK 0x1F

uint32_t truncated_mean(uint16_t *src, int head, int count)
{
int i = 0;
int idx = 0;

// Collect mean
i = count;
idx = head;
int s_mean = 0;
while (i)
{
i--;
idx--;
idx &= ADC_BUFFER_MASK;
s_mean += src[idx];
}

// add (count >> 1) for better rounding
int mean = (s_mean + (count >> 1)) / count;

// Collect sigma
i = count;
idx = head;
int s_sigma = 0;
while (i)
{
i--;
idx--;
idx &= ADC_BUFFER_MASK;
int val = src[idx];
s_sigma += (mean - val) * (mean - val);
}

int sigma_square_4 = s_sigma * 4 / count;

// Drop big deviations and count mean for the rest
i = count;
idx = head;
int s_mean_filtered = 0;
int s_mean_filtered_cnt = 0;

while (i)
{
i--;
idx--;
idx &= ADC_BUFFER_MASK;
int val = src[idx];

if ((mean - val) * (mean - val) < sigma_square_4)
{
s_mean_filtered += val;
s_mean_filtered_cnt++;
}
}

// Protection from zero div. Should never happen
if (!s_mean_filtered_cnt) return mean;

return (s_mean_filtered + (s_mean_filtered_cnt >> 1)) / s_mean_filtered_cnt;
<div> }