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Bug fix and ADC support for DE10 Nano
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| #!/usr/bin/env python | ||
| # coding: utf-8 | ||
|
|
||
| ''' | ||
| @disc: ADC readout Sensor Test (Analog Devices LTC2308) | ||
| Fast way over the virtual memory | ||
| @date: 21.01.2020 | ||
| @device: Intel Cyclone V | ||
| @author: Robin Sebastian | ||
| (https://github.com/robseb) | ||
| ''' | ||
| import os | ||
| import time | ||
| import math | ||
| # | ||
| # This demo uses the python class "devmen" (https://github.com/kylemanna/pydevmem) | ||
| # be sure that this file is on the same directory | ||
| # | ||
| import devmem | ||
|
|
||
| # Demo duration | ||
| TEST_DURATIONS =30 | ||
|
|
||
| # the Lightweight HPS-to-FPGA Bus base address offset | ||
| HPS_LW_ADRS_OFFSET = 0xFF200000 | ||
|
|
||
| # LTC2308 Address offset | ||
| ADC_ADDRES_OFFSET = 0x40 | ||
|
|
||
| # Register set of the LTC2308 | ||
| ADC_CMD_REG_OFFSET = 0x0 | ||
| ADC_DATA_REG_OFFSET = 0x4 | ||
|
|
||
| #### Used ADC Channel | ||
| # Select here the ADC Channel for this Demo | ||
| ADC_CH = 1 | ||
| ## | ||
|
|
||
| ### FIFO Convention Data Size for average calculation | ||
| FIFO_SIZE = 255 # MAX=1024 | ||
|
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||
| VALUE_OR_VOLTAGE_OUTPUT = 0 # 1: Raw Value output | 0: Volage | ||
|
|
||
| if __name__ == '__main__': | ||
| print("ADC readout Demo for LTC2308 ADC with Channel "+str(ADC_CH)) | ||
|
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| # open the memory Access to the Lightweight HPS-to-FPGA bridge | ||
| # (Base address, byte length to acceses, interface) | ||
| de = devmem.DevMem(HPS_LW_ADRS_OFFSET, ADC_ADDRES_OFFSET+0x8, "/dev/mem") | ||
|
|
||
| # Enter test loop | ||
| for var in range(TEST_DURATIONS): | ||
|
|
||
| # Set meassure number for ADC convert | ||
| de.write(ADC_ADDRES_OFFSET+ADC_DATA_REG_OFFSET,[FIFO_SIZE]) | ||
| # Enable the convention with CH0 | ||
| de.write(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET, [(ADC_CH <<1) | 0x00]) | ||
| de.write(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET, [(ADC_CH <<1) | 0x01]) | ||
| de.write(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET, [(ADC_CH <<1) | 0x00]) | ||
|
|
||
| timeout = 300 #ms | ||
| # Wait untis convention is done or timeout | ||
| while (not(timeout == 0)): | ||
|
|
||
| if(de.read(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET,1)[0] & (1<<0)): | ||
| break | ||
|
|
||
| timeout = timeout -1 | ||
| time.sleep(.001) # delay 1ms | ||
|
|
||
| # Avarage FIFO values | ||
| rawValue = 0 | ||
| for i in range(FIFO_SIZE): | ||
| rawValue = rawValue+ (de.read(ADC_ADDRES_OFFSET+ADC_DATA_REG_OFFSET,1))[0] | ||
|
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||
| value = rawValue / FIFO_SIZE | ||
|
|
||
| if VALUE_OR_VOLTAGE_OUTPUT: | ||
| value = round(value,2) | ||
| print("ADC AVG: "+str(value)) | ||
| else: | ||
| # Convert ADC Value to Volage | ||
| volage = round(value/1000,2) | ||
| print("U AVG: "+str(volage)+"V") | ||
|
|
||
| time.sleep(.2) # 200ms delay | ||
|
|
||
| print('End of demo...') |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| #!/usr/bin/env python | ||
| # coding: utf-8 | ||
|
|
||
| ''' | ||
| @disc: ADC readout Sensor Test (Analog Devices LTC2308) | ||
| Fast way over the virtual memory | ||
| @date: 21.01.2020 | ||
| @device: Intel Cyclone V | ||
| @author: Robin Sebastian | ||
| (https://github.com/robseb) | ||
| ''' | ||
| import os | ||
| import time | ||
| import math | ||
| import sys | ||
| # | ||
| # This demo uses the python class "devmen" (https://github.com/kylemanna/pydevmem) | ||
| # be sure that this file is on the same directory | ||
| # | ||
| import devmem | ||
|
|
||
| # Demo duration | ||
| TEST_DURATIONS =30 | ||
|
|
||
| # the Lightweight HPS-to-FPGA Bus base address offset | ||
| HPS_LW_ADRS_OFFSET = 0xFF200000 | ||
|
|
||
| # LTC2308 Address offset | ||
| ADC_ADDRES_OFFSET = 0x40 | ||
|
|
||
| # Register set of the LTC2308 | ||
| ADC_CMD_REG_OFFSET = 0x0 | ||
| ADC_DATA_REG_OFFSET = 0x4 | ||
|
|
||
| #### Used ADC Channel | ||
| # Select here the ADC Channel for this Demo | ||
| ADC_CH = 1 | ||
| ## | ||
|
|
||
| ### FIFO Convention Data Size for average calculation | ||
| FIFO_SIZE = 255 # MAX=1024 | ||
|
|
||
| VALUE_OR_VOLTAGE_OUTPUT = 0 # 1: Raw Value output | 0: Volage | ||
|
|
||
| if __name__ == '__main__': | ||
| print("ADC readout Demo for LTC2308 ADC with Channel "+str(ADC_CH)) | ||
|
|
||
| # The ADC is only supported with rsYocto Version 1.031 or later | ||
| versionNo = 0 | ||
| # The rsYocto Version Number is located here: "/usr/rsyocto/version.txt" | ||
| if os.path.isfile("/usr/rsyocto/version.txt"): | ||
| versionStr = "" | ||
| with open("/usr/rsyocto/version.txt", "r") as f: | ||
| versionStr = f.read() | ||
| # Convert String to int | ||
| try: | ||
| versionNo = float(versionStr) | ||
| except ValueError: | ||
| print("Warning: Failed to read rsYocto Version") | ||
|
|
||
| if not versionNo > 1.031: | ||
| print("Error: The ADC is only supported with rsYocto Version 1.031 or later ") | ||
| print(" This Version is: "+versionStr) | ||
| sys.exit() | ||
|
|
||
| # open the memory Access to the Lightweight HPS-to-FPGA bridge | ||
| # (Base address, byte length to acceses, interface) | ||
| de = devmem.DevMem(HPS_LW_ADRS_OFFSET, ADC_ADDRES_OFFSET+0x8, "/dev/mem") | ||
|
|
||
| # Enter test loop | ||
| for var in range(TEST_DURATIONS): | ||
|
|
||
| # Set meassure number for ADC convert | ||
| de.write(ADC_ADDRES_OFFSET+ADC_DATA_REG_OFFSET,[FIFO_SIZE]) | ||
| # Enable the convention with CH0 | ||
| de.write(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET, [(ADC_CH <<1) | 0x00]) | ||
| de.write(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET, [(ADC_CH <<1) | 0x01]) | ||
| de.write(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET, [(ADC_CH <<1) | 0x00]) | ||
|
|
||
| timeout = 300 #ms | ||
| # Wait untis convention is done or timeout | ||
| while (not(timeout == 0)): | ||
|
|
||
| if(de.read(ADC_ADDRES_OFFSET+ADC_CMD_REG_OFFSET,1)[0] & (1<<0)): | ||
| break | ||
|
|
||
| timeout = timeout -1 | ||
| time.sleep(.001) # delay 1ms | ||
|
|
||
| # Avarage FIFO values | ||
| rawValue = 0 | ||
| for i in range(FIFO_SIZE): | ||
| rawValue = rawValue+ (de.read(ADC_ADDRES_OFFSET+ADC_DATA_REG_OFFSET,1))[0] | ||
|
|
||
| value = rawValue / FIFO_SIZE | ||
|
|
||
| if VALUE_OR_VOLTAGE_OUTPUT: | ||
| value = round(value,2) | ||
| print("ADC AVG: "+str(value)) | ||
| else: | ||
| # Convert ADC Value to Volage | ||
| volage = round(value/1000,2) | ||
| print("U AVG: "+str(volage)+"V") | ||
|
|
||
| time.sleep(.2) # 200ms delay | ||
|
|
||
| print('End of demo...') |
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