def _set_rate(self, value):
self._check_open()
value = int(value)
lgpio.spi_close(self._handle)
self._baud = value
self._handle = lgpio.spi_open(self._port, self._device, self._baud,
self._spi_flags)
def _set_clock_mode(self, value):
self._check_open()
if not 0 <= value < 4:
raise SPIInvalidClockMode("%d is not a valid SPI clock mode" % value)
lgpio.spi_close(self._handle)
self._spi_flags = value
self._handle = lgpio.spi_open(
self._port, self._device, self._baud, self._spi_flags)
def __init__(self, clock_pin, mosi_pin, miso_pin, select_pin, pin_factory):
port, device = spi_port_device(
clock_pin, mosi_pin, miso_pin, select_pin)
self._port = port
self._device = device
self._baud = 500000
self._spi_flags = 0
self._handle = None
super(LGPIOHardwareSPI, self).__init__(pin_factory=pin_factory)
to_reserve = {clock_pin, select_pin}
if mosi_pin is not None:
to_reserve.add(mosi_pin)
if miso_pin is not None:
to_reserve.add(miso_pin)
self.pin_factory.reserve_pins(self, *to_reserve)
self._handle = lgpio.spi_open(port, device, self._baud, self._spi_flags)
status = sbc.serial_write(9999, [])
check("serial_write 1", sbc.BAD_SERIAL_PARAM, status)
status = sbc.serial_write(9999, [88, 77, 66, 55, 44, 33, 22, 11])
check("serial_write 2", sbc.BAD_HANDLE, status)
status = sbc.serial_write_byte(9999, 256)
check("serial_write_byte 2", sbc.BAD_SERIAL_PARAM, status)
status = sbc.serial_write_byte(9999, 88)
check("serial_write_byte 2", sbc.BAD_HANDLE, status)
status = sbc.spi_close(9999)
check("spi_close 1", sbc.BAD_HANDLE, status)
status = sbc.spi_open(2, 1, 7777, 6666)
check("spi_open 1", sbc.SPI_OPEN_FAILED, status)
status, dummy = sbc.spi_read(9999, 0)
check("spi_read 1", sbc.BAD_SPI_COUNT, status)
status, dummy = sbc.spi_read(9999, 8888)
check("spi_read 2", sbc.BAD_HANDLE, status)
status = sbc.spi_write(9999, [])
check("spi_write 1", sbc.BAD_SPI_COUNT, status)
status = sbc.spi_write(9999, [88, 77, 66, 55, 44, 33, 22, 11])
check("spi_write 2", sbc.BAD_HANDLE, status)
status, dummy = sbc.spi_xfer(9999, [])
import time
import lgpio as sbc
MCP23017_1 = 0x20
MCP23017_2 = 0x21
NANO = 0x2c
DAC_CS = 8 # spidev 0.0
ADC_CS = 25 # spidev 0.1
NANO_CS = 24 # spidev 0.1
chip = sbc.gpiochip_open(0)
sbc.gpio_claim_output(chip, ADC_CS, 1)
sbc.gpio_claim_output(chip, NANO_CS, 1)
dac = sbc.spi_open(0, 0, 50000)
others = sbc.spi_open(0, 1, 50000)
nano_i2c = sbc.i2c_open(1, NANO)
nano_serial = sbc.serial_open("serial0", 115200)
inc = True
potpos = 0
while True:
while True:
sbc.spi_write(dac, [0, potpos])