status = sbc.gpio_set_watchdog_micros(9999, 8888, 400000000)
check("gpio_set_watchdog_micros 1", sbc.BAD_WATCHDOG_MICS, status)
status = sbc.gpio_set_watchdog_micros(9999, 8888, 4000)
check("gpio_set_watchdog_micros 2", sbc.BAD_HANDLE, status)
status = sbc.gpio_claim_alert(9999, 8888, 7777, 6666, 5555)
check("gpio_claim_alert 1", sbc.BAD_HANDLE, status)
status = sbc.gpio_claim_input(9999, 8888)
check("gpio_claim_input 1", sbc.BAD_HANDLE, status)
status = sbc.group_claim_input(9999, [8888, 7777, 6666])
check("group_claim_input 1", sbc.BAD_HANDLE, status)
status = sbc.gpio_claim_output(9999, 8888, 7777)
check("gpio_claim_output 1", sbc.BAD_HANDLE, status)
status = sbc.group_claim_output(9999, [8888, 7777, 6666])
check("group_claim_output 1", sbc.BAD_HANDLE, status)
status = sbc.gpio_write(9999, 8888, 7777)
check("gpio_write 1", sbc.BAD_HANDLE, status)
err = sbc.error_text(0)
check("error_text 1", "No error", err)
err = sbc.error_text(-1)
check("error_text 2", "initialisation failed", err)
err = sbc.error_text(1)
import time
import lgpio
#17,27,22
LED = 17
# open the gpio chip and set the LED pin as output
h = lgpio.gpiochip_open(0)
lgpio.gpio_claim_output(h, LED)
try:
while True:
# Turn the GPIO pin high
lgpio.gpio_write(h, LED, 0)
print('GIO', LED, 'is On')
time.sleep(3)
# Turn the GPIO pin low
lgpio.gpio_write(h, LED, 1)
print('GIO', LED, 'is Off')
time.sleep(1)
except KeyboardInterrupt:
lgpio.gpio_write(h, LED, 1)
lgpio.gpiochip_close(h)
"""
bench.py
2020-11-18
Public Domain
http://abyz.me.uk/lg/py_lgpio.html
./bench.py
"""
import time
import lgpio
OUT = 21
LOOPS = 100000
h = lgpio.gpiochip_open(0)
lgpio.gpio_claim_output(h, OUT)
t0 = time.time()
for i in range(LOOPS):
lgpio.gpio_write(h, OUT, 0)
lgpio.gpio_write(h, OUT, 1)
t1 = time.time()
lgpio.gpiochip_close(h)
print("{:.0f} toggles per second".format(LOOPS / (t1 - t0)))
#17: location 11 Header pin
#27: location 13 Header pin
#22: location 15 Header pin
LED0 = 17
LED1 = 27
LED2 = 22
if __name__ == "__main__":
print("...Start...")
# open the gpio chip and set the LED pin as output
h = lgpio.gpiochip_open(0)
print(lgpio.gpio_claim_output(h, LED0))
lgpio.gpio_claim_output(h, LED1)
lgpio.gpio_claim_output(h, LED2)
try:
while True:
# Turn the GPIO pin low
lgpio.gpio_write(h, LED0, 0)
lgpio.gpio_write(h, LED1, 0)
lgpio.gpio_write(h, LED2, 0)
print('GIO', 'is On')
time.sleep(90)
# Turn the GPIO pin high
lgpio.gpio_write(h, LED0, 1)
Public Domain
http://abyz.me.uk/lg/py_lgpio.html
./tx_pulse.py
"""
import time
import lgpio as sbc
OUT = 21
LOOPS = 120
h = sbc.gpiochip_open(0)
sbc.gpio_claim_output(h, OUT)
sbc.tx_pulse(h, OUT, 20000, 30000) # 20 Hz 40 % duty cycle
time.sleep(2)
sbc.tx_pulse(h, OUT, 20000, 5000, pulse_cycles=LOOPS) # 40 Hz 80 %
start = time.time()
while sbc.tx_busy(h, OUT, sbc.TX_PWM):
time.sleep(0.01)
end = time.time()
print("{} cycles at 40 Hz took {:.1f} seconds".format(LOOPS, end - start))
./testbed.py
"""
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:
if temp < MIN_TEMP:
setFanSpeed(FAN_OFF, temp)
# Set fan speed to MAXIMUM if the temperature is above MAX_TEMP
elif temp > MAX_TEMP:
setFanSpeed(FAN_MAX, temp)
# Caculate dynamic fan speed
else:
step = (FAN_HIGH - FAN_LOW) / (MAX_TEMP - MIN_TEMP)
delta = temp - MIN_TEMP
speed = FAN_LOW + (round(delta) * step)
setFanSpeed(speed, temp)
return ()
try:
# Setup GPIO pin
fan = sbc.gpiochip_open(0)
sbc.gpio_claim_output(fan, PWM_GPIO_NR)
setFanSpeed(FAN_LOW, MIN_TEMP)
# Handle fan speed every WAIT_TIME sec
while True:
handleFanSpeed()
time.sleep(WAIT_TIME)
except KeyboardInterrupt: # trap a CTRL+C keyboard interrupt
setFanSpeed(FAN_LOW, MIN_TEMP)