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Merge pull request #628 from openmv/freq_scaling_updates
Freq scaling updates
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commit
74876892f6
@ -5,8 +5,7 @@ import sensor, image, time, cpufreq
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sensor.reset() # Reset and initialize the sensor.
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sensor.set_pixformat(sensor.GRAYSCALE) # Set pixel format to RGB565 (or GRAYSCALE)
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sensor.set_framesize(sensor.QQVGA) # Set frame size to QVGA (320x240)
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sensor.skip_frames(time = 2000) # Wait for settings take effect.
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sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
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clock = time.clock() # Create a clock object to track the FPS.
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def test_image_processing():
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@ -17,6 +16,7 @@ def test_image_processing():
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print("\nFrequency Scaling Test...")
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for f in cpufreq.get_supported_frequencies():
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print("Testing CPU Freq: %dMHz..." %(f))
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cpufreq.set_frequency(f)
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clock.reset()
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test_image_processing()
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@ -21,7 +21,7 @@
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#define ARRAY_LENGTH(x) (sizeof(x)/sizeof(x[0]))
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#if defined(STM32H7)
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static const uint32_t cpufreq_freqs[] = {100, 200, 400};
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static const uint32_t cpufreq_freqs[] = {120, 240, 480};
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#elif defined(STM32F7)
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static const uint32_t cpufreq_pllq[] = {5, 6, 7, 8, 9};
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static const uint32_t cpufreq_freqs[] = {120, 144, 168, 192, 216};
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@ -109,7 +109,7 @@ mp_obj_t py_cpufreq_set_frequency(mp_obj_t cpufreq_obj)
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RCC_CLOCKTYPE_D1PCLK1 | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2 | RCC_CLOCKTYPE_D3PCLK1);
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switch (cpufreq) {
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case 100:
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case 120:
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV4; // D1CPRE
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1; // HPRE
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1; // D2PPRE1
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@ -118,7 +118,7 @@ mp_obj_t py_cpufreq_set_frequency(mp_obj_t cpufreq_obj)
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1; // D3PPRE
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break;
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case 200:
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case 240:
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV2; // D1CPRE
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1; // HPRE
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2; // D2PPRE1
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@ -127,7 +127,7 @@ mp_obj_t py_cpufreq_set_frequency(mp_obj_t cpufreq_obj)
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2; // D3PPRE
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break;
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case 400:
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case 480:
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1; // D1CPRE
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2; // HPRE
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2; // D2PPRE1
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