fnet_spi.py

# This script is licensed under BSD License, see file LICENSE.txt.
#
# (c) TASKING Germany GmbH, 2023
 
"""
This example shows basic FNet SPI controller initialization and usage.
 
(c) iSYSTEM Labs, 2022
"""
import isystem.connect as ic
 
winidea_id = ''
 
 
try:
    # connect to last winIDEA
    connMgr = ic.ConnectionMgr()
    connMgr.connect(ic.CConnectionConfig().instanceId(winidea_id))
 
    # initialize FNet SPI Controller
    SessionCtrl = ic.CSessionCtrl(connMgr)
    FNetCtrl = ic.CFNetCtrl(connMgr)
    SPICtrl = FNetCtrl.SPI('ADIO.SPI1')
 
    
 
    optSPICfg = SPICtrl.cfg()
    optSPICfg.reset()
 
    # enable
    optSPICfg.set_enabled(bEnabled = True)
    # CS active when low, sample on Second edge, clock idle state is High
    optSPICfg.set_operation(bCSActiveHigh = False, bSamplingOnSecondEdge = True, bClockIdleHigh = True)
 
    # configure the network
    optSPICfg.set_name('eMMC')
    optSPICfg.add_description_file('eMMC.dbc')
 
    
 
    SessionCtrl.end() #end first for cfg to take effect
    SessionCtrl.begin_prepare()
 
    
 
    # use FNetTrigger 5 in the example
    FTrig = 5
 
    optSPIOp = SPICtrl.op()
    # qualifier - starts on FTrig, not enabled from start
    SPICtrl.op_qualifier_enable(FTrig)
    SPICtrl.op_qualifier_enable_on_start(False)
 
    # don't record all  messages
    optSPIOp.set_record_all(False)
    # configure comparator in one call
    optSPIOp.set_comparator(
        nComparator = 0, 
        bRecord = True, 
        nFTrig = FTrig, 
        nCS = 0, 
        nMOSI = False, 
        nOffset = 0, 
        nSize = 8, 
        bBigEndian = False, 
        nValue = 0x5, 
        nMask = 0x7
    ) 
 
    # apply new operation settings and restart operation
    FNetCtrl.op_apply()
 
except Exception as ex:
    print(ex)