108 lines
3.2 KiB
Python
108 lines
3.2 KiB
Python
from init_regs_value import init_regs_value
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from regs_addr import regs_addr
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import RPi.GPIO as GPIO
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import time
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CONFIG_REGS = regs_addr["CONFIG_REGS"]
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STROBES = regs_addr["STROBES"]
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STATUS = regs_addr["STATUS"]
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MEMORY = regs_addr["MEMORY"]
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MASKS = regs_addr["MASKS"]
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ACCESS = regs_addr["ACCESS"]
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SRES = STROBES["SRES"]
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SNOP = STROBES["SNOP"]
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VERSION = STATUS["VERSION"]
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MARCSTATE = STATUS["MARCSTATE"]
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def init_gpio(GDO0_PIN=23, GDO2_PIN=24):
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# Use BCM numbering
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GPIO.setmode(GPIO.BCM)
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# Set up GPIO 23 and 24 as inputs
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# GPIO.setup(GDO0_PIN, GPIO.IN)
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# GPIO.setup(GDO2_PIN, GPIO.IN)
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GPIO.setup(GDO0_PIN, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
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GPIO.setup(GDO2_PIN, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
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# def clear_csn():
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# CSN_PIN = 8 # CE0 = GPIO8 (Pin 24)
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# GPIO.setmode(GPIO.BCM)
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# GPIO.setup(CSN_PIN, GPIO.OUT)
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# sleep(0.1)
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# GPIO.output(CSN_PIN, GPIO.HIGH)
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# sleep(0.1)
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def print_gdo_state(GDO0_PIN=23, GDO2_PIN=24):
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gdo0 = GPIO.input(23) # Reads 1 or 0
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gdo2 = GPIO.input(24)
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print(f"GDO0 (GPIO23): {gdo0}, GDO2 (GPIO24): {gdo2}")
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sleep(0.1)
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def get_addr(name):
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addr = ""
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stop = False
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for reg_type, reg_data in regs_addr.items():
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for reg_name, reg_addr in reg_data.items():
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if reg_name == name:
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stop = True
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addr = reg_addr
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if stop == False:
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raise Exception("Failed to find address for "+name)
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return addr
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def strobe(spi, command):
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"""Send a command strobe to CC2500"""
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spi.xfer2([command])
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sleep(0.1)
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def write_reg(spi, addr, value):
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"""Write single byte to a register"""
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spi.xfer2([addr, value])
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sleep(0.1)
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def read_register(spi, addr):
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READ_SINGLE = get_addr("READ_SINGLE")
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# Send address | 0x80 (read), then 0x00 dummy to clock in response
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response = spi.xfer2([READ_SINGLE | addr, 0x00])
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sleep(0.1)
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return response[1]
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def disable_crc(spi):
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spi.xfer2([CONFIG_REGS["PKTCTRL0"], 0x01])
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def init_regs(spi):
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for reg_name, value in init_regs_value.items():
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addr = get_addr(reg_name)
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write_reg(spi, addr, value)
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def test_read_write_reg(spi, dbg=False):
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FIFOTHR = get_addr("FIFOTHR")
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initial_val = read_register(spi, FIFOTHR)
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test_value = initial_val + 1
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write_reg(spi, FIFOTHR, test_value)
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check = read_register(spi, FIFOTHR)
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write_reg(spi, FIFOTHR, initial_val)
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if((check != test_value) or dbg):
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print("initial value ", initial_val)
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print("test value ", test_value)
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print("check ",check)
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if(not dbg):
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raise Exception("Test Read+Write failed")
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return check == test_value
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def dump_regs(spi, cfgonly = False):
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if cfgonly:
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for reg_name, reg_addr in CONFIG_REGS.items():
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name :str = reg_name
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value = read_register(spi, reg_addr)
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print((name+":").ljust(15) +hex(value).ljust(4)+"\t"+str(value))
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else:
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for reg_type, reg_data in regs_addr.items():
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for reg_name, reg_addr in reg_data.items():
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name :str = reg_name
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value = read_register(spi, reg_addr)
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print((name+":").ljust(15) +hex(value).ljust(4)+"\t"+str(value))
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def sleep(t):
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return time.sleep(t) |