To use MCP3008 with pigpio.
Project description
# Installing
Stable library from PyPi:
Just run pip install pimcp3008
# PiMcp3008’s Methods
## Constructor(config={})
‘config’ is dictionary type.
### ‘channel’
Configure SPI chip selects of Raspberry Pi.
- Channel.CE0.value
CE0 is used for MCP3008
Default
- Channel.CE1.value
CE1 is used for MCP3008
- Channel.CE2.value
CE2 is used for MCP3008
Only Auxiliary Mode
### ‘clock’
Configure SPI clock of Raspberry Pi.
- Integer value
Default: 1000000
### ‘device’
Configure MCP3008 compatible devices.
- Device.MCP3008.value
Use MCP3008
Default
- Device.MCP3004.value
Use MCP3004
## read(channels)
Read A/D convert value. Argument channels that enumerate integer value is valiable length. Return value has include selected channel’s value.
MCP3008: 0 to 7
MCP3004: 0 to 3
If argument channels is not exist, return value has include all channel’s value.
Return value is dictionary type. Key is channels value that type is int. Value is integer value.
# Sample
Run sudo pigpiod before running the sample.
## Simple
# -*- coding: utf-8 -*-
import pimpc3008 as MPC3008
import time
obj = MPC3008.PiMpc3008()
try:
while True:
values = obj.read()
print(values)
time.sleep(10)
except KeyboardInterrupt:
pass
## Modify config
‘clock’ is 100kHz.
# -*- coding: utf-8 -*-
import pimpc3008 as MPC3008
import time
config = {
'clock' : 100000
}
# pigpioを初期化する
obj = MPC3008.PiMpc3008(config)
try:
while True:
values = obj.read()
print(values)
time.sleep(10)
except KeyboardInterrupt:
# Ctrl + C で終了する
pass
## Select Channel
Get 0ch, 2ch and 4ch values.
# -*- coding: utf-8 -*-
import pimpc3008 as MPC3008
import time
obj = MPC3008.PiMpc3008()
try:
while True:
values = obj.read(0, 2, 4)
print(values)
time.sleep(10)
except KeyboardInterrupt:
pass
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