MicroPython Forum (Archive)

shaoziyang

That's a good idea.

shaoziyang

I use a multimeter to measure voltage on capacitor, it is not change.

Or read the pin value, it always zero.

PC14=Pin('PC14', Pin.OUT)
PC14(1)
PC14()

shaoziyang

I need more GPIOs, and not use RTC. So I turn off RTC by set

#define MICROPY_HW_ENABLE_RTC (0)

but PC14/PC15 out value is not change.

shaoziyang

Does pyboard use RTC pin as general GPIO? I have try to turn off RTC in mpconfigboard.h, but when I set PC14/PC15 to OUT mode and set 1, it always get 0.

shaoziyang

Main difference is accelerometer and magnetic sensor.

shaoziyang

It is strange that, in UART use pin id as paramter directly, eg:

Code: Select all

u=UART(1,9600,tx=4,rx=5)

But in SPI/I2C, it is use pin object, eg:

Code: Select all

i2c=I2C(1,sda=Pin(14),scl=Pin(15))

shaoziyang

Current firmware is not reach the minimum power consumption of STM32L476, but its power consumption is low enough for most battery-powered applications.

shaoziyang

I use ZT303, a 4 1/2 bits multimeter. Internal shunt for uA is about 100 ohm, not 1000 ohm.

shaoziyang

Yes, it will make the display data a little smaller.

shaoziyang

I am sorry to put the wrong picture, I have fixed it.

In running mode, it about 10mA.

MicroPython Forum (Archive)

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Re: Does pyboard use RTC pin as GPIO

Does pyboard use RTC pin as GPIO

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why UART use pin id as paramter directly?

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Re: low power consumption pbyL board

Re: low power consumption pbyL board

Re: low power consumption pbyL board