AFL.automation.loading.SainSmartRelay

Module Attributes

usbrelay

Classes

MultiChannelRelay()
SainSmartRelay(relaylabels, serial_port[, ...])
SerialDevice(port[, baudrate, timeout, ...])

class AFL.automation.loading.SainSmartRelay.SainSmartRelay(relaylabels, serial_port, timeout=0.5)

__init__(relaylabels, serial_port, timeout=0.5)

Init connection to a SainSmart 16-channel USB relay module.

Params: relaylabels (dict):

mapping of port id to load name, e.g. {0:’arm_up’,1:’arm_down’}

serial_port (str):

port to connect to

setAllChannelsOff()

setChannels(channels)

Write a value (True, False) to the channels specified in channels

Parameters: channels (dict):

dict of channels, keys as either str (name) or int (id) to write to, vals as the value to write

getChannels(asid=False)

Read the current state of all channels

Parameters: asid (bool,default false): Dict keys should simply be the id, not the name.

Returns: (dict) key:value mappings of state.

toggleChannels(channels)

AFL.automation.loading.SainSmartRelay.usbrelay = [[b':FE0100200000FF\r\n', b':FE0100000010F1\r\n'], [b':FE0500000000FD\r\n', b':FE050000FF00FE\r\n'], [b':FE0500010000FC\r\n', b':FE050001FF00FD\r\n'], [b':FE0500020000FB\r\n', b':FE050002FF00FC\r\n'], [b':FE0500030000FA\r\n', b':FE050003FF00FB\r\n'], [b':FE0500040000F9\r\n', b':FE050004FF00FA\r\n'], [b':FE0500050000F8\r\n', b':FE050005FF00F9\r\n'], [b':FE0500060000F7\r\n', b':FE050006FF00F8\r\n'], [b':FE0500070000F6\r\n', b':FE050007FF00F7\r\n'], [b':FE0500080000F5\r\n', b':FE050008FF00F6\r\n'], [b':FE0500090000F4\r\n', b':FE050009FF00F5\r\n'], [b':FE05000A0000F3\r\n', b':FE05000AFF00F4\r\n'], [b':FE05000B0000F2\r\n', b':FE05000BFF00F3\r\n'], [b':FE05000C0000F1\r\n', b':FE05000CFF00F2\r\n'], [b':FE05000D0000F0\r\n', b':FE05000DFF00F1\r\n'], [b':FE05000E0000FF\r\n', b':FE05000EFF00F0\r\n'], [b':FE05000F0000FE\r\n', b':FE05000FFF00FF\r\n'], [b':FE0F00000010020000E1\r\n', b':FE0F0000001002FFFFE3\r\n']]

“”” Sainsmart 16-Channel 9-36v USB Relay Module (CH341 chip)(sku# 101-70-208) 1. Requires CH341 Windows driver installed (see http://wiki.sainsmart.com/index.php/101-70-208) 2. The hex table provided by Sainsmart requires converting to ASCII chars (see ‘usbrelay’ below) 3. Format of ‘usbrelay’ two-dimensional array is:

usbrelay = [row][ch-off, ch-on] so that the 2nd index selects ON/OFF value

while the 1st index selects the array row.

Example…

status = usbrelay[0][1] # row-0 (status) stat_ret = usbrelay[0][0] # row-0 (status return) ch_1_on = usbrelay[1][1] # row-1 (chan-1 off) ch_1_off = usbrelay[1][0] # row-1 (chan-1 off) ch_16_on = usbrelay[16][1] # row-16 (chan-16 on) ch_16_off = usbrelay[16][0] # row-16 (chan-16 off) all_on = usbrelay[17][1] # row-17 (all on) all_off = usbrelay[17][0] # row-17 (all off)

“””