LoRa-Workshop/micropython/uPyLora/controller_esp32.py

111 lines
3.0 KiB
Python
Raw Normal View History

2019-11-19 19:48:05 +00:00
from machine import Pin, SPI, reset
from .controller import Controller
2019-11-19 19:48:05 +00:00
class ESP32Controller(Controller):
# LoRa config
PIN_ID_FOR_LORA_RESET = 14
PIN_ID_FOR_LORA_SS = 18
PIN_ID_SCK = 5
PIN_ID_MOSI = 27
PIN_ID_MISO = 19
PIN_ID_FOR_LORA_DIO0 = 26
PIN_ID_FOR_LORA_DIO1 = None
PIN_ID_FOR_LORA_DIO2 = None
PIN_ID_FOR_LORA_DIO3 = None
PIN_ID_FOR_LORA_DIO4 = None
PIN_ID_FOR_LORA_DIO5 = None
# ESP config
ON_BOARD_LED_PIN_NO = 2
ON_BOARD_LED_HIGH_IS_ON = True
GPIO_PINS = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 21, 22,
23, 25, 26, 27, 32, 34, 35, 36, 37, 38, 39)
def __init__(self,
pin_id_led = ON_BOARD_LED_PIN_NO,
on_board_led_high_is_on = ON_BOARD_LED_HIGH_IS_ON,
pin_id_reset = PIN_ID_FOR_LORA_RESET,
blink_on_start = (2, 0.5, 0.5)):
super().__init__(pin_id_led,
on_board_led_high_is_on,
pin_id_reset,
blink_on_start)
def prepare_pin(self, pin_id, in_out = Pin.OUT):
if pin_id is not None:
pin = Pin(pin_id, in_out)
new_pin = Controller.Mock()
new_pin.pin_id = pin_id
new_pin.value = pin.value
if in_out == Pin.OUT:
new_pin.low = lambda : pin.value(0)
new_pin.high = lambda : pin.value(1)
else:
new_pin.irq = pin.irq
return new_pin
def prepare_irq_pin(self, pin_id):
pin = self.prepare_pin(pin_id, Pin.IN)
if pin:
pin.set_handler_for_irq_on_rising_edge = lambda handler: pin.irq(handler = handler, trigger = Pin.IRQ_RISING)
pin.detach_irq = lambda : pin.irq(handler = None, trigger = 0)
return pin
def get_spi(self):
spi = None
try:
spi = SPI(baudrate = 10000000, polarity = 0, phase = 0, bits = 8, firstbit = SPI.MSB,
sck = Pin(self.PIN_ID_SCK, Pin.OUT, Pin.PULL_DOWN),
mosi = Pin(self.PIN_ID_MOSI, Pin.OUT, Pin.PULL_UP),
miso = Pin(self.PIN_ID_MISO, Pin.IN, Pin.PULL_UP))
#spi.init()
except Exception as e:
print(e)
if spi:
spi.deinit()
spi = None
reset() # in case SPI is already in use, need to reset.
return spi
def prepare_spi(self, spi):
if spi:
new_spi = Controller.Mock()
def transfer(pin_ss, address, value = 0x00):
response = bytearray(1)
pin_ss.low()
spi.write(bytes([address]))
spi.write_readinto(bytes([value]), response)
pin_ss.high()
return response
new_spi.transfer = transfer
new_spi.close = spi.deinit
return new_spi
def __exit__(self):
self.spi.close()