Idea of timelapse with automatic settings

[hhanswurster]

Hardware is set up, pi is runnig :)


gphoto2 works :)

Now i need some help with variables, i cant not make it work :/

# Camera setting script

import smbus
import time
from subprocess import call

# Get I2C bus
bus = smbus.SMBus(1)

# TSL2561 address, 0x39(57)
# Select control register, 0x00(00) with command register, 0x80(128)
#		0x03(03)	Power ON mode
bus.write_byte_data(0x39, 0x00 | 0x80, 0x03)
# TSL2561 address, 0x39(57)
# Select timing register, 0x01(01) with command register, 0x80(128)
#		0x02(02)	Nominal integration time = 402ms
bus.write_byte_data(0x39, 0x01 | 0x80, 0x02)

time.sleep(0.5)

# Read data back from 0x0C(12) with command register, 0x80(128), 2 bytes
# ch0 LSB, ch0 MSB
data = bus.read_i2c_block_data(0x39, 0x0C | 0x80, 2)

# Read data back from 0x0E(14) with command register, 0x80(128), 2 bytes
# ch1 LSB, ch1 MSB
data1 = bus.read_i2c_block_data(0x39, 0x0E | 0x80, 2)

# Convert the data
ch0 = data[1] * 256 + data[0]
ch1 = data1[1] * 256 + data1[0]
luxvis = (ch0 - ch1)

# Output data to screen
print "Sensor reading: %d lux" %(luxvis)

# Decide what preset to use

if luxvis <= 90:
    fiso= 1
    g_iso = 100
    g_f = 2.8
elif luxvis <= 120:
    fiso = 2
    g_iso = 200
    g_f = 10.0 
elif luxvis<= 300:
    fiso = 3
    g_iso = 100
    g_f = 2.8
elif luxvis <= 4000:
    fiso = 4
    g_iso = 1600
    g_f = 8.0
else:
    fiso= 5
    g_iso = 400
    g_f = 4.0

# Output preset to screen
print "Use iso and F setting number: %d" %(fiso)
print "iso %d" %(g_iso)
print "f   %d" %(g_f)

# Set iso and wait
call(["gphoto2","--set-config","iso=%d"]) %(g_iso)
print "setting iso and wait...."

time.sleep(6)
print "iso set!"

# set F and wait
call(["gphoto2","--set-config","F-Number=%d"]) %(g_f)
print "setting f and wait...."

time.sleep(6)
print "f set!"

# capture image, rename it and save it
print "Capturing Image"
call (["gphoto2","--capture-image-and-download","--filename","/media/pi/6CD8-2DB4/images/%Y_%m_%d_%H_%M_%S.arw"])

i have a problem getting g_iso and g_f values into the call :/

g_iso = 100
call(["gphoto2","--set-config","iso=%d"]) %(g_iso)

does not work.

call(["gphoto2","--set-config","iso=100"])

does.

also for g_f i need floating point value so i tryed to use %f

any hints? :) Thanks!