calliope-edu / micropython-calliope-mini Goto Github PK

in branch "minidal" the speaker can be used by the following commands:

pin_M_SLEEP.write_digital(1)
pin_M_IN2.write_digital(1)
pin_M_IN1.write_analog(300)

using pin_M_IN1.set_analog_period_microseconds(10000) the frequency can be adjusted

The eCompass driver is not implemented in the minidal branch, so all functions regarding gyroscope or magnetometer cannot be used currently. The eCompass is interfaced via the same I2C port as P18, P19 on the edge connector.

The RGB led can be testet with the following code:

import neopixel
np=neopixel.NeoPixel(pin_RGB, 1)
np[0] = (0, 10, 10)
np.show() 

In the branch minidal setting the I2C pins according to the calliope mini pinout [1.X-2.X] results in a hex file that does not run the REPL terminal.
From line 179 of yotta_modules/mbed-classic/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/TARGET_NRF51_MICROBIT/PinNames.h the updated code would be:

    //SDA (SERIAL DATA LINE)
    I2C_SDA0 = p20,

    //SCL (SERIAL CLOCK LINE)
    I2C_SCL0 = p19

The hex file can be compiled, but the REPL console does not react.
The target reset pin of the microbit happens to be at p19 but also uncommenting the following line does not resolve the issue.

    //TARGET RESET
    TGT_NRESET = p19,