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ports: Add SoftI2C and SoftSPI to machine module where appropriate.

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Previous commits removed the ability for one I2C/SPI constructor to
construct both software- or hardware-based peripheral instances.  Such
construction is now split to explicit soft and non-soft types.

This commit makes both types available in all ports that previously could
create both software and hardware peripherals: machine.I2C and machine.SPI
construct hardware instances, while machine.SoftI2C and machine.SoftSPI
create software instances.

This is a breaking change for use of software-based I2C and SPI.  Code that
constructed I2C/SPI peripherals in the following way will need to be
changed:

    machine.I2C(-1, ...)            ->  machine.SoftI2C(...)
    machine.I2C(scl=scl, sda=sda)   ->  machine.SoftI2C(scl=scl, sda=sda)

    machine.SPI(-1, ...)            ->  machine.SoftSPI(...)
    machine.SPI(sck=sck, mosi=mosi, miso=miso)
                        ->  machine.SoftSPI(sck=sck, mosi=mosi, miso=miso)

Code which uses machine.I2C and machine.SPI classes to access hardware
peripherals does not need to change.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2020-09-16 14:09:49 +10:00
parent 9e0533b9e1
commit 39d50d129c
15 changed files with 33 additions and 16 deletions
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1
ports/esp32/modmachine.h
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@@ -16,6 +16,7 @@ extern const mp_obj_type_t machine_touchpad_type;
extern const mp_obj_type_t machine_adc_type;
extern const mp_obj_type_t machine_dac_type;
extern const mp_obj_type_t machine_pwm_type;
extern const mp_obj_type_t machine_hw_i2c_type;
extern const mp_obj_type_t machine_hw_spi_type;
extern const mp_obj_type_t machine_uart_type;
extern const mp_obj_type_t machine_rtc_type;