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Added experimental power measurement code
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import utime | ||
from machine import Pin, Timer | ||
import config as cfg | ||
import port_io | ||
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cf1_count = 0 | ||
cf_count = 0 | ||
cf1_frequency = 0 | ||
cf_frequency = 0 | ||
sel = 0 | ||
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''' | ||
Upstream/Downstream values of voltage devider: | ||
Ru/Rd = 2400/1 | ||
Series resistor for current measurement: | ||
Rs = 0.001 | ||
From the data sheet: | ||
Vref = 1.218 | ||
Power: | ||
FCF = 1721506 * V(V)*V(I) / Vref^2 | ||
Voltage: | ||
FCFU = 15397 * V(V) / Vref | ||
Current: | ||
FCFI = 94638 * V(I) / Vref | ||
''' | ||
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def calc_power(cf, cf1, sel): | ||
if sel: | ||
v = cf1 * 0.18677 | ||
i = 0.0 | ||
else: | ||
v = 0.0 | ||
i = cf1 * 0.01287 | ||
p = cf * 2.069 | ||
return v, i, p | ||
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def callback_cf1(p): | ||
global cf1_count | ||
cf1_count += 1 | ||
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def callback_cf(p): | ||
global cf_count | ||
cf_count += 1 | ||
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def total(t): | ||
global cf_count | ||
global cf1_count | ||
global sel | ||
cf1_frequency = cf1_count | ||
cf_frequency = cf_count | ||
cf1_count = 0 | ||
cf_count = 0 | ||
print("--> ",sel, calc_power(cf_frequency, cf1_frequency, sel)) | ||
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port_io.setup_ports() | ||
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port_io.set_output(cfg.RELAY, 1) | ||
port_io.set_output(cfg.LED_R, 1) | ||
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cf1_pin = cfg.inputs[cfg.CF1]['obj'] | ||
cf_pin = cfg.inputs[cfg.CF]['obj'] | ||
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print(cf1_pin, cf_pin) | ||
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cf1_pin.irq(trigger=Pin.IRQ_FALLING, handler=callback_cf1) | ||
cf_pin.irq(trigger=Pin.IRQ_FALLING, handler=callback_cf) | ||
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# IRQ method | ||
''' | ||
timer = Timer(-1) | ||
timer.init(period=1000, mode=Timer.PERIODIC, callback=total) | ||
while (1): | ||
port_io.set_output(cfg.SEL, sel) | ||
port_io.set_output(cfg.LED_G, sel) | ||
utime.sleep(5) | ||
sel = 1 - sel # toggle | ||
''' | ||
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# polling method | ||
while(1): | ||
port_io.set_output(cfg.SEL, sel) | ||
port_io.set_output(cfg.LED_G, sel) | ||
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cf1_count = 0 | ||
cf_count = 0 | ||
utime.sleep(1) | ||
cf1_frequency = cf1_count | ||
cf_frequency = cf_count | ||
print("--> ",sel, calc_power(cf_frequency, cf1_frequency, sel)) | ||
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sel = 1 - sel # toggle |