mirror of
https://github.com/infiniteCable2/panda.git
synced 2026-02-18 17:23:52 +08:00
893e486194
* Added an initial working implementation of the register readback and applied it to the LLCAN registers. Also fixed an init bug in CAN. * Locally disable pylint import error * Reverted change to CAN-obj->FA1R setting * Fixed misra compliance * Changed hash function name * Fixed CAN filter setting * Added voltage health test * Converted ADC to register functions * Converted clock to use register setters * Added check to see if fault status is zero after running test * Converted DAC to use register setters * Converted fan to use register setters * Converted gmlan bitbanging to use register setters * Changed over interrupt driver to use register setters. Also moved some includes and definition places for critical sections * Fixed build * Converted LLGPIO to use register setters * Converted pwm to use register setters * Fixed cold boot * Fixed health fault check in automated tests * Added comment for the future (issue #367) * Converted RTC driver to use register setters * Converted SPI to use register setters * Converted timer driver to use register setters * Fixed register fault on white pandas and disabled showing of fault for release * Bump version
51 lines
1.3 KiB
Python
Executable File
51 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python3
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import matplotlib.pyplot as plt # pylint: disable=import-error
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HASHING_PRIME = 23
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REGISTER_MAP_SIZE = 0x3FF
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BYTES_PER_REG = 4
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# From ST32F413 datasheet
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REGISTER_ADDRESS_REGIONS = [
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(0x40000000, 0x40007FFF),
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(0x40010000, 0x400107FF),
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(0x40011000, 0x400123FF),
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(0x40012C00, 0x40014BFF),
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(0x40015000, 0x400153FF),
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(0x40015800, 0x40015BFF),
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(0x40016000, 0x400167FF),
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(0x40020000, 0x40021FFF),
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(0x40023000, 0x400233FF),
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(0x40023800, 0x40023FFF),
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(0x40026000, 0x400267FF),
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(0x50000000, 0x5003FFFF),
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(0x50060000, 0x500603FF),
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(0x50060800, 0x50060BFF),
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(0x50060800, 0x50060BFF),
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(0xE0000000, 0xE00FFFFF)
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]
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def hash(reg_addr):
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return (((reg_addr >> 16) ^ ((((reg_addr + 1) & 0xFFFF) * HASHING_PRIME) & 0xFFFF)) & REGISTER_MAP_SIZE)
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# Calculate hash for each address
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hashes = []
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double_hashes = []
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for (start_addr, stop_addr) in REGISTER_ADDRESS_REGIONS:
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for addr in range(start_addr, stop_addr+1, BYTES_PER_REG):
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h = hash(addr)
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hashes.append(h)
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double_hashes.append(hash(h))
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# Make histograms
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plt.subplot(2, 1, 1)
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plt.hist(hashes, bins=REGISTER_MAP_SIZE)
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plt.title("Number of collisions per hash")
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plt.xlabel("Address")
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plt.subplot(2, 1, 2)
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plt.hist(double_hashes, bins=REGISTER_MAP_SIZE)
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plt.title("Number of collisions per double hash")
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plt.xlabel("Address")
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plt.show()
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